./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3574394960 <...> [ 3.329805][ T30] audit: type=1400 audit(1677370156.410:10): avc: denied { getattr } for pid=80 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 3.504776][ T97] udevd[97]: starting version 3.2.10 [ 3.543030][ T98] udevd[98]: starting eudev-3.2.10 [ 3.545707][ T97] udevd (97) used greatest stack depth: 23472 bytes left [ 4.361324][ T128] ip (128) used greatest stack depth: 23136 bytes left [ 11.929911][ T30] kauditd_printk_skb: 49 callbacks suppressed [ 11.929922][ T30] audit: type=1400 audit(1677370165.040:60): avc: denied { transition } for pid=234 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 11.940916][ T30] audit: type=1400 audit(1677370165.050:61): avc: denied { write } for pid=234 comm="sh" path="pipe:[13220]" dev="pipefs" ino=13220 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 13.437556][ T237] scp (237) used greatest stack depth: 22832 bytes left [ 13.442011][ T235] sshd (235) used greatest stack depth: 20928 bytes left Warning: Permanently added '10.128.1.73' (ECDSA) to the list of known hosts. execve("./syz-executor3574394960", ["./syz-executor3574394960"], 0x7ffd8d8d60d0 /* 10 vars */) = 0 brk(NULL) = 0x555556446000 brk(0x555556446c40) = 0x555556446c40 arch_prctl(ARCH_SET_FS, 0x555556446300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555564465d0) = 323 set_robust_list(0x5555564465e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7fc84e0af210, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fc84e0af8e0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fc84e0af2b0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fc84e0af8e0}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3574394960", 4096) = 28 brk(0x555556467c40) = 0x555556467c40 brk(0x555556468000) = 0x555556468000 mprotect(0x7fc84e16f000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 324 ./strace-static-x86_64: Process 324 attached [pid 324] set_robust_list(0x5555564465e0, 24) = 0 [pid 324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 324] setpgid(0, 0) = 0 [pid 324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 324] write(3, "1000", 4) = 4 [pid 324] close(3) = 0 [pid 324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 324] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 324] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[325], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 325 [pid 324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 325 attached [pid 325] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 325] mkdir("./file0", 000) = 0 [pid 325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] <... futex resumed>) = 1 [pid 325] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] <... futex resumed>) = 1 [pid 325] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 324] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 324] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[326], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 326 [pid 324] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 324] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] <... futex resumed>) = 1 [pid 325] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 326 attached [pid 326] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 326] umount2("./file0", MNT_DETACH [pid 325] <... umount2 resumed>) = 0 [pid 325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.108680][ T30] audit: type=1400 audit(1677370173.220:62): avc: denied { execmem } for pid=323 comm="syz-executor357" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.127976][ T30] audit: type=1400 audit(1677370173.240:63): avc: denied { mounton } for pid=324 comm="syz-executor357" path="/root/file0" dev="sda1" ino=1138 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 326] <... umount2 resumed>) = 0 [pid 326] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 324] <... futex resumed>) = 0 [pid 324] exit_group(0) = ? [pid 325] <... futex resumed>) = ? [pid 325] +++ exited with 0 +++ [pid 326] <... futex resumed>) = ? [pid 326] +++ exited with 0 +++ [pid 324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 327 ./strace-static-x86_64: Process 327 attached [pid 327] set_robust_list(0x5555564465e0, 24) = 0 [pid 327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 327] setpgid(0, 0) = 0 [pid 327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 327] write(3, "1000", 4) = 4 [pid 327] close(3) = 0 [pid 327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 327] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 327] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[328], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 328 [pid 327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 328 attached [pid 328] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 328] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 327] <... futex resumed>) = 0 [pid 327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 328] <... futex resumed>) = 1 [pid 328] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 327] <... futex resumed>) = 0 [pid 327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 328] <... futex resumed>) = 1 [pid 328] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 327] <... futex resumed>) = 0 [pid 327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 327] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 327] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[329], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 329 [pid 327] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 327] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 328] <... futex resumed>) = 1 [pid 328] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 329 attached [pid 329] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 329] umount2("./file0", MNT_DETACH [pid 328] <... umount2 resumed>) = 0 [pid 328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.151331][ T30] audit: type=1400 audit(1677370173.240:64): avc: denied { mount } for pid=324 comm="syz-executor357" name="/" dev="ramfs" ino=13359 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:ramfs_t tclass=filesystem permissive=1 [ 20.173710][ T30] audit: type=1400 audit(1677370173.240:65): avc: denied { mounton } for pid=324 comm="syz-executor357" path="/root/file0" dev="ramfs" ino=13359 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:ramfs_t tclass=dir permissive=1 [pid 328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 329] <... umount2 resumed>) = 0 [pid 329] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 327] <... futex resumed>) = 0 [pid 327] exit_group(0) = ? [pid 328] <... futex resumed>) = ? [pid 328] +++ exited with 0 +++ [pid 329] <... futex resumed>) = ? [pid 329] +++ exited with 0 +++ [pid 327] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=327, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 330 ./strace-static-x86_64: Process 330 attached [pid 330] set_robust_list(0x5555564465e0, 24) = 0 [pid 330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 330] setpgid(0, 0) = 0 [pid 330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 330] write(3, "1000", 4) = 4 [pid 330] close(3) = 0 [pid 330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 330] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 330] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[331], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 331 [pid 330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 331 attached [pid 331] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 331] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 330] <... futex resumed>) = 0 [pid 330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 331] <... futex resumed>) = 1 [pid 331] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 330] <... futex resumed>) = 0 [pid 330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 331] <... futex resumed>) = 1 [pid 331] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 330] <... futex resumed>) = 0 [pid 330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 330] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 330] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[332], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 332 [pid 330] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 331] <... futex resumed>) = 1 [pid 331] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 332 attached ) = 0 [pid 331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] set_robust_list(0x7fc84e07e9e0, 24) = 0 [ 20.196344][ T30] audit: type=1400 audit(1677370173.240:66): avc: denied { mount } for pid=324 comm="syz-executor357" name="/" dev="incremental-fs" ino=13359 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 20.219840][ T30] audit: type=1400 audit(1677370173.240:67): avc: denied { unmount } for pid=324 comm="syz-executor357" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [pid 332] umount2("./file0", MNT_DETACH) = 0 [pid 332] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 330] <... futex resumed>) = 0 [pid 330] exit_group(0) = ? [pid 331] <... futex resumed>) = ? [pid 331] +++ exited with 0 +++ [pid 332] <... futex resumed>) = ? [pid 332] +++ exited with 0 +++ [pid 330] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=330, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 333 attached , child_tidptr=0x5555564465d0) = 333 [pid 333] set_robust_list(0x5555564465e0, 24) = 0 [pid 333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 333] setpgid(0, 0) = 0 [pid 333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 333] write(3, "1000", 4) = 4 [pid 333] close(3) = 0 [pid 333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 333] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 333] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 334 attached [pid 334] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] <... clone resumed>, parent_tid=[334], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 334 [pid 333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] <... futex resumed>) = 0 [pid 334] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] <... futex resumed>) = 0 [pid 334] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] <... futex resumed>) = 0 [pid 334] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... mount resumed>) = 0 [pid 334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] <... futex resumed>) = 0 [pid 334] umount2("./file0", MNT_DETACH) = 0 [pid 334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 334] <... futex resumed>) = 0 [pid 334] umount2("./file0", MNT_DETACH) = 0 [pid 334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] exit_group(0) = ? [pid 334] <... futex resumed>) = ? [pid 334] +++ exited with 0 +++ [pid 333] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 335 ./strace-static-x86_64: Process 335 attached [pid 335] set_robust_list(0x5555564465e0, 24) = 0 [pid 335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 335] setpgid(0, 0) = 0 [pid 335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 335] write(3, "1000", 4) = 4 [pid 335] close(3) = 0 [pid 335] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 335] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 335] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 336 attached , parent_tid=[336], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 336 [pid 335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 336] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 336] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 335] <... futex resumed>) = 0 [pid 335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 336] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 335] <... futex resumed>) = 0 [pid 335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 336] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 335] <... futex resumed>) = 0 [pid 335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 335] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 335] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[337], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 337 [pid 335] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 337 attached [pid 337] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 337] umount2("./file0", MNT_DETACH) = 0 [pid 337] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 335] <... futex resumed>) = 0 [pid 337] <... futex resumed>) = 1 [pid 337] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 336] umount2("./file0", MNT_DETACH) = 0 [pid 336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 335] exit_group(0) = ? [pid 337] <... futex resumed>) = ? [pid 337] +++ exited with 0 +++ [pid 336] +++ exited with 0 +++ [pid 335] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=335, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 338 ./strace-static-x86_64: Process 338 attached [pid 338] set_robust_list(0x5555564465e0, 24) = 0 [pid 338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 338] setpgid(0, 0) = 0 [pid 338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 338] write(3, "1000", 4) = 4 [pid 338] close(3) = 0 [pid 338] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 338] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 338] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 339 attached , parent_tid=[339], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 339 [pid 339] set_robust_list(0x7fc84e09f9e0, 24 [pid 338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] <... set_robust_list resumed>) = 0 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 339] <... futex resumed>) = 1 [pid 338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] mount(NULL, "./file0", "ramfs", 0, NULL [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] <... mount resumed>) = 0 [pid 339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 339] <... futex resumed>) = 1 [pid 338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] <... mount resumed>) = 0 [pid 339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 339] <... futex resumed>) = 1 [pid 338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] umount2("./file0", MNT_DETACH [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 338] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 339] <... umount2 resumed>) = 0 [pid 338] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 340 attached ) = 0 [pid 340] set_robust_list(0x7fc84e07e9e0, 24 [pid 339] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] <... clone resumed>, parent_tid=[340], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 340 [pid 340] <... set_robust_list resumed>) = 0 [pid 338] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] umount2("./file0", MNT_DETACH [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 340] <... umount2 resumed>) = 0 [pid 340] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 338] <... futex resumed>) = 0 [pid 340] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] exit_group(0 [pid 340] <... futex resumed>) = ? [pid 339] <... futex resumed>) = ? [pid 338] <... exit_group resumed>) = ? [pid 339] +++ exited with 0 +++ [pid 340] +++ exited with 0 +++ [pid 338] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=338, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 341 ./strace-static-x86_64: Process 341 attached [pid 341] set_robust_list(0x5555564465e0, 24) = 0 [pid 341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 341] setpgid(0, 0) = 0 [pid 341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 341] write(3, "1000", 4) = 4 [pid 341] close(3) = 0 [pid 341] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 341] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 341] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[342], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 342 [pid 341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 342 attached [pid 342] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 342] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 341] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 341] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[343], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 343 [pid 341] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] umount2("./file0", MNT_DETACH) = 0 [pid 342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.240127][ T30] audit: type=1400 audit(1677370173.240:68): avc: denied { unmount } for pid=324 comm="syz-executor357" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:ramfs_t tclass=filesystem permissive=1 [pid 342] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 343 attached [pid 343] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 343] umount2("./file0", MNT_DETACH) = 0 [pid 343] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 341] <... futex resumed>) = 0 [pid 341] exit_group(0) = ? [pid 342] <... futex resumed>) = ? [pid 342] +++ exited with 0 +++ [pid 343] +++ exited with 0 +++ [pid 341] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=341, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 344 ./strace-static-x86_64: Process 344 attached [pid 344] set_robust_list(0x5555564465e0, 24) = 0 [pid 344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 344] setpgid(0, 0) = 0 [pid 344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 344] write(3, "1000", 4) = 4 [pid 344] close(3) = 0 [pid 344] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 344] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 344] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[345], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 345 [pid 344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 345 attached [pid 345] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 345] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 345] mount(NULL, "./file0", "ramfs", 0, NULL [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... mount resumed>) = 0 [pid 345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 345] umount2("./file0", MNT_DETACH [pid 344] <... futex resumed>) = 0 [pid 344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 344] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 344] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 345] <... umount2 resumed>) = 0 [pid 344] <... clone resumed>, parent_tid=[346], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 346 [pid 344] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 346 attached [pid 346] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 346] umount2("./file0", MNT_DETACH [pid 345] <... futex resumed>) = 0 [pid 346] <... umount2 resumed>) = 0 [pid 346] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] exit_group(0) = ? [pid 345] +++ exited with 0 +++ [pid 346] <... futex resumed>) = ? [pid 346] +++ exited with 0 +++ [pid 344] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=344, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 347 ./strace-static-x86_64: Process 347 attached [pid 347] set_robust_list(0x5555564465e0, 24) = 0 [pid 347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 347] setpgid(0, 0) = 0 [pid 347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 347] write(3, "1000", 4) = 4 [pid 347] close(3) = 0 [pid 347] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 347] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 347] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 348 attached , parent_tid=[348], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 348 [pid 348] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 348] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 348] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 347] <... futex resumed>) = 1 [pid 348] <... futex resumed>) = 0 [pid 348] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 347] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 348] <... futex resumed>) = 0 [pid 347] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 347] <... futex resumed>) = 0 [pid 347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 347] <... futex resumed>) = 0 [pid 347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 347] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 347] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[349], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 349 [pid 347] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 349 attached [pid 349] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 349] umount2("./file0", MNT_DETACH [pid 348] umount2("./file0", MNT_DETACH [pid 349] <... umount2 resumed>) = 0 [pid 349] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... umount2 resumed>) = 0 [pid 347] <... futex resumed>) = 0 [pid 349] <... futex resumed>) = 1 [pid 349] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 347] exit_group(0) = ? [pid 348] <... futex resumed>) = ? [pid 348] +++ exited with 0 +++ [pid 349] <... futex resumed>) = ? [pid 349] +++ exited with 0 +++ [pid 347] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=347, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 350 ./strace-static-x86_64: Process 350 attached [pid 350] set_robust_list(0x5555564465e0, 24) = 0 [pid 350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 350] setpgid(0, 0) = 0 [pid 350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 350] write(3, "1000", 4) = 4 [pid 350] close(3) = 0 [pid 350] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 350] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 350] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 351 attached , parent_tid=[351], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 351 [pid 351] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 351] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 351] <... futex resumed>) = 0 [pid 351] mkdir("./file0", 000 [pid 350] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 351] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] <... futex resumed>) = 0 [pid 350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 351] <... futex resumed>) = 0 [pid 351] mount(NULL, "./file0", "ramfs", 0, NULL [pid 350] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... mount resumed>) = 0 [pid 351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... futex resumed>) = 0 [pid 351] <... futex resumed>) = 1 [pid 350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 350] <... futex resumed>) = 0 [pid 350] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... mount resumed>) = 0 [pid 351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 350] <... futex resumed>) = 0 [pid 351] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 350] <... futex resumed>) = 0 [pid 351] umount2("./file0", MNT_DETACH [pid 350] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 350] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 351] <... umount2 resumed>) = 0 [pid 351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 351] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 352 attached [pid 350] <... clone resumed>, parent_tid=[352], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 352 [pid 352] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 350] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] umount2("./file0", MNT_DETACH [pid 350] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 352] <... umount2 resumed>) = 0 [pid 352] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 350] <... futex resumed>) = 0 [pid 352] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] exit_group(0) = ? [pid 351] <... futex resumed>) = ? [pid 351] +++ exited with 0 +++ [pid 352] <... futex resumed>) = ? [pid 352] +++ exited with 0 +++ [pid 350] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=350, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 353 attached , child_tidptr=0x5555564465d0) = 353 [pid 353] set_robust_list(0x5555564465e0, 24) = 0 [pid 353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 353] setpgid(0, 0) = 0 [pid 353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 353] write(3, "1000", 4) = 4 [pid 353] close(3) = 0 [pid 353] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 353] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 353] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 354 attached [pid 354] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 353] <... clone resumed>, parent_tid=[354], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 354 [pid 354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] <... futex resumed>) = 0 [pid 354] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] <... futex resumed>) = 0 [pid 354] mount(NULL, "./file0", "ramfs", 0, NULL [pid 353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... mount resumed>) = 0 [pid 354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] <... futex resumed>) = 0 [pid 354] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... mount resumed>) = 0 [pid 354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] <... futex resumed>) = 0 [pid 354] umount2("./file0", MNT_DETACH) = 0 [pid 354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] <... futex resumed>) = 0 [pid 354] umount2("./file0", MNT_DETACH) = 0 [pid 353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] exit_group(0) = ? [pid 354] <... futex resumed>) = ? [pid 354] +++ exited with 0 +++ [pid 353] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=353, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 355 ./strace-static-x86_64: Process 355 attached [pid 355] set_robust_list(0x5555564465e0, 24) = 0 [pid 355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 355] setpgid(0, 0) = 0 [pid 355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 355] write(3, "1000", 4) = 4 [pid 355] close(3) = 0 [pid 355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 355] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 355] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[356], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 356 ./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 356] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 356] <... futex resumed>) = 0 [pid 356] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 356] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 356] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 355] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 356] <... futex resumed>) = 0 [pid 356] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 356] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 356] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 355] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 356] <... futex resumed>) = 0 [pid 356] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 355] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... mount resumed>) = 0 [pid 356] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 356] umount2("./file0", MNT_DETACH [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 355] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 356] <... umount2 resumed>) = 0 [pid 355] <... mprotect resumed>) = 0 [pid 355] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[357], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 357 [pid 356] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x7fc84e07e9e0, 24 [pid 356] <... futex resumed>) = 0 [pid 356] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 357] <... set_robust_list resumed>) = 0 [pid 357] umount2("./file0", MNT_DETACH) = 0 [pid 357] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 357] <... futex resumed>) = 1 [pid 355] exit_group(0) = ? [pid 356] <... futex resumed>) = ? [pid 356] +++ exited with 0 +++ [pid 357] +++ exited with 0 +++ [pid 355] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=355, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 358 ./strace-static-x86_64: Process 358 attached [pid 358] set_robust_list(0x5555564465e0, 24) = 0 [pid 358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 358] setpgid(0, 0) = 0 [pid 358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 358] write(3, "1000", 4) = 4 [pid 358] close(3) = 0 [pid 358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 358] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 358] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[359], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 359 [pid 358] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 359] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 359] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 359] <... futex resumed>) = 1 [pid 359] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 359] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 359] <... futex resumed>) = 1 [pid 359] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 359] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 359] <... futex resumed>) = 1 [pid 358] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] umount2("./file0", MNT_DETACH [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 359] <... umount2 resumed>) = 0 [pid 358] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 359] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... mprotect resumed>) = 0 [pid 359] <... futex resumed>) = 0 [pid 358] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 359] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 360 attached [pid 358] <... clone resumed>, parent_tid=[360], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 360 [pid 360] set_robust_list(0x7fc84e07e9e0, 24 [pid 358] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 360] <... set_robust_list resumed>) = 0 [pid 358] <... futex resumed>) = 0 [pid 360] umount2("./file0", MNT_DETACH [pid 358] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 360] <... umount2 resumed>) = 0 [pid 360] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 358] <... futex resumed>) = 0 [pid 358] exit_group(0 [pid 360] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] <... futex resumed>) = ? [pid 358] <... exit_group resumed>) = ? [pid 360] +++ exited with 0 +++ [pid 359] +++ exited with 0 +++ [pid 358] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=358, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 361 ./strace-static-x86_64: Process 361 attached [pid 361] set_robust_list(0x5555564465e0, 24) = 0 [pid 361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 361] setpgid(0, 0) = 0 [pid 361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 361] write(3, "1000", 4) = 4 [pid 361] close(3) = 0 [pid 361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 361] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 361] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[362], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 362 ./strace-static-x86_64: Process 362 attached [pid 362] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 362] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 362] <... futex resumed>) = 0 [pid 362] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 362] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 361] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 362] <... futex resumed>) = 0 [pid 361] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 362] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 362] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 362] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... futex resumed>) = 0 [pid 361] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 361] <... futex resumed>) = 1 [pid 362] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 361] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 362] <... mount resumed>) = 0 [pid 362] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 361] <... futex resumed>) = 0 [pid 362] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 361] <... futex resumed>) = 0 [pid 362] umount2("./file0", MNT_DETACH [pid 361] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] <... umount2 resumed>) = 0 [pid 361] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 362] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... mmap resumed>) = 0x7fc84e05e000 [pid 362] <... futex resumed>) = 0 [pid 361] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 362] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... mprotect resumed>) = 0 [pid 361] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 363 attached , parent_tid=[363], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 363 [pid 363] set_robust_list(0x7fc84e07e9e0, 24 [pid 361] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... set_robust_list resumed>) = 0 [pid 361] <... futex resumed>) = 0 [pid 363] umount2("./file0", MNT_DETACH [pid 361] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... umount2 resumed>) = 0 [pid 363] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = 0 [pid 363] <... futex resumed>) = 1 [pid 361] exit_group(0 [pid 363] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... exit_group resumed>) = ? [pid 362] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 363] <... futex resumed>) = ? [pid 362] +++ exited with 0 +++ [pid 363] +++ exited with 0 +++ [pid 361] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=361, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 364 attached , child_tidptr=0x5555564465d0) = 364 [pid 364] set_robust_list(0x5555564465e0, 24) = 0 [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 364] setpgid(0, 0) = 0 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 364] write(3, "1000", 4) = 4 [pid 364] close(3) = 0 [pid 364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 364] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 364] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 365 attached [pid 365] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 365] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] <... clone resumed>, parent_tid=[365], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 365 [pid 364] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 365] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 365] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 365] mount(NULL, "./file0", "ramfs", 0, NULL [pid 364] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... mount resumed>) = 0 [pid 365] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 365] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 364] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... mount resumed>) = 0 [pid 365] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 365] umount2("./file0", MNT_DETACH) = 0 [pid 365] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 365] <... futex resumed>) = 0 [pid 365] umount2("./file0", MNT_DETACH) = 0 [pid 365] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] exit_group(0) = ? [pid 365] <... futex resumed>) = ? [pid 365] +++ exited with 0 +++ [pid 364] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 366 ./strace-static-x86_64: Process 366 attached [pid 366] set_robust_list(0x5555564465e0, 24) = 0 [pid 366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 366] setpgid(0, 0) = 0 [pid 366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 366] write(3, "1000", 4) = 4 [pid 366] close(3) = 0 [pid 366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 366] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 366] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[367], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 367 [pid 366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 367] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... futex resumed>) = 1 [pid 367] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... futex resumed>) = 1 [pid 367] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 366] <... futex resumed>) = 0 [pid 367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 367] umount2("./file0", MNT_DETACH [pid 366] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 366] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 367] <... umount2 resumed>) = 0 [pid 366] <... mprotect resumed>) = 0 [pid 367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 367] <... futex resumed>) = 0 [pid 367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 368 attached [pid 366] <... clone resumed>, parent_tid=[368], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 368 [pid 368] set_robust_list(0x7fc84e07e9e0, 24 [pid 366] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... set_robust_list resumed>) = 0 [pid 366] <... futex resumed>) = 0 [pid 368] umount2("./file0", MNT_DETACH [pid 366] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] <... umount2 resumed>) = 0 [pid 368] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] exit_group(0) = ? [pid 367] <... futex resumed>) = ? [pid 367] +++ exited with 0 +++ [pid 368] <... futex resumed>) = ? [pid 368] +++ exited with 0 +++ [pid 366] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 369 attached , child_tidptr=0x5555564465d0) = 369 [pid 369] set_robust_list(0x5555564465e0, 24) = 0 [pid 369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 369] setpgid(0, 0) = 0 [pid 369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 369] write(3, "1000", 4) = 4 [pid 369] close(3) = 0 [pid 369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 369] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 369] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 370 attached [pid 370] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 369] <... clone resumed>, parent_tid=[370], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 370 [pid 370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 369] <... futex resumed>) = 1 [pid 370] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 0 [pid 370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 370] <... futex resumed>) = 0 [pid 370] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 370] <... futex resumed>) = 0 [pid 369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 370] <... futex resumed>) = 0 [pid 370] umount2("./file0", MNT_DETACH [pid 369] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] <... umount2 resumed>) = 0 [pid 370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 369] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 369] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 371 attached , parent_tid=[371], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 371 [pid 371] set_robust_list(0x7fc84e07e9e0, 24 [pid 369] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... set_robust_list resumed>) = 0 [pid 371] umount2("./file0", MNT_DETACH [pid 369] <... futex resumed>) = 0 [pid 369] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] <... umount2 resumed>) = 0 [pid 371] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 371] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] <... futex resumed>) = 0 [pid 369] exit_group(0) = ? [pid 370] <... futex resumed>) = ? [pid 370] +++ exited with 0 +++ [pid 371] <... futex resumed>) = ? [pid 371] +++ exited with 0 +++ [pid 369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 372 ./strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x5555564465e0, 24) = 0 [pid 372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 372] setpgid(0, 0) = 0 [pid 372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 372] write(3, "1000", 4) = 4 [pid 372] close(3) = 0 [pid 372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 372] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 372] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[373], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 373 [pid 372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 373 attached [pid 373] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 373] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... futex resumed>) = 0 [pid 372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... futex resumed>) = 1 [pid 373] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... futex resumed>) = 0 [pid 372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... futex resumed>) = 1 [pid 373] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 372] <... futex resumed>) = 0 [pid 373] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 372] <... futex resumed>) = 0 [pid 373] umount2("./file0", MNT_DETACH [pid 372] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 372] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 373] <... umount2 resumed>) = 0 [pid 372] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 374 attached ) = 0 [pid 372] <... clone resumed>, parent_tid=[374], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 374 [pid 373] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] set_robust_list(0x7fc84e07e9e0, 24 [pid 372] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... set_robust_list resumed>) = 0 [pid 372] <... futex resumed>) = 0 [pid 374] umount2("./file0", MNT_DETACH [pid 372] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... umount2 resumed>) = 0 [pid 374] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... futex resumed>) = 0 [pid 374] <... futex resumed>) = 1 [pid 374] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 372] exit_group(0) = ? [pid 373] <... futex resumed>) = ? [pid 374] <... futex resumed>) = ? [pid 373] +++ exited with 0 +++ [pid 374] +++ exited with 0 +++ [pid 372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=372, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 375 attached , child_tidptr=0x5555564465d0) = 375 [pid 375] set_robust_list(0x5555564465e0, 24) = 0 [pid 375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 375] setpgid(0, 0) = 0 [pid 375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 375] write(3, "1000", 4) = 4 [pid 375] close(3) = 0 [pid 375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 375] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 375] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 376 attached , parent_tid=[376], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 376 [pid 375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 376] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 375] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 375] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 376] umount2("./file0", MNT_DETACH [pid 375] <... clone resumed>, parent_tid=[377], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 377 [pid 375] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 377 attached [pid 377] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 377] umount2("./file0", MNT_DETACH) = 0 [pid 377] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = 1 [pid 377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] <... umount2 resumed>) = 0 [pid 376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 375] exit_group(0) = ? [pid 377] <... futex resumed>) = ? [pid 377] +++ exited with 0 +++ [pid 376] +++ exited with 0 +++ [pid 375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 378 ./strace-static-x86_64: Process 378 attached [pid 378] set_robust_list(0x5555564465e0, 24) = 0 [pid 378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 378] setpgid(0, 0) = 0 [pid 378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 378] write(3, "1000", 4) = 4 [pid 378] close(3) = 0 [pid 378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 378] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 378] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[379], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 379 [pid 378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 379 attached [pid 379] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 379] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... futex resumed>) = 1 [pid 379] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... futex resumed>) = 1 [pid 379] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 379] <... futex resumed>) = 1 [pid 378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] umount2("./file0", MNT_DETACH [pid 378] <... futex resumed>) = 0 [pid 378] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 379] <... umount2 resumed>) = 0 [pid 378] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... mprotect resumed>) = 0 [pid 379] <... futex resumed>) = 0 [pid 378] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 380 attached [pid 378] <... clone resumed>, parent_tid=[380], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 380 [pid 380] set_robust_list(0x7fc84e07e9e0, 24 [pid 378] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... set_robust_list resumed>) = 0 [pid 378] <... futex resumed>) = 0 [pid 380] umount2("./file0", MNT_DETACH [pid 378] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... umount2 resumed>) = 0 [pid 380] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 380] <... futex resumed>) = 1 [pid 378] exit_group(0 [pid 380] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] <... exit_group resumed>) = ? [pid 379] <... futex resumed>) = ? [pid 379] +++ exited with 0 +++ [pid 380] <... futex resumed>) = ? [pid 380] +++ exited with 0 +++ [pid 378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 381 ./strace-static-x86_64: Process 381 attached [pid 381] set_robust_list(0x5555564465e0, 24) = 0 [pid 381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 381] setpgid(0, 0) = 0 [pid 381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 381] write(3, "1000", 4) = 4 [pid 381] close(3) = 0 [pid 381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 381] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 381] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 382 attached , parent_tid=[382], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 382 [pid 382] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 382] <... futex resumed>) = 0 [pid 381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 382] <... futex resumed>) = 0 [pid 382] mount(NULL, "./file0", "ramfs", 0, NULL [pid 381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... mount resumed>) = 0 [pid 382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 381] <... futex resumed>) = 0 [pid 381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 381] <... futex resumed>) = 0 [pid 381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 382] umount2("./file0", MNT_DETACH [pid 381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 382] <... umount2 resumed>) = 0 [pid 381] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 381] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] <... clone resumed>, parent_tid=[383], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 383 [pid 382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 383 attached [pid 383] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 383] umount2("./file0", MNT_DETACH) = 0 [pid 383] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] <... futex resumed>) = 0 [pid 381] exit_group(0 [pid 382] <... futex resumed>) = ? [pid 381] <... exit_group resumed>) = ? [pid 382] +++ exited with 0 +++ [pid 383] <... futex resumed>) = ? [pid 383] +++ exited with 0 +++ [pid 381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=381, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 384 ./strace-static-x86_64: Process 384 attached [pid 384] set_robust_list(0x5555564465e0, 24) = 0 [pid 384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 384] setpgid(0, 0) = 0 [pid 384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 384] write(3, "1000", 4) = 4 [pid 384] close(3) = 0 [pid 384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 384] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 384] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 385 attached [pid 385] set_robust_list(0x7fc84e09f9e0, 24 [pid 384] <... clone resumed>, parent_tid=[385], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 385 [pid 385] <... set_robust_list resumed>) = 0 [pid 384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] mkdir("./file0", 000 [pid 384] <... futex resumed>) = 0 [pid 385] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 0 [pid 385] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 384] <... futex resumed>) = 0 [pid 384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 385] <... futex resumed>) = 0 [pid 385] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... mount resumed>) = 0 [pid 385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 384] <... futex resumed>) = 0 [pid 385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] <... futex resumed>) = 0 [pid 385] umount2("./file0", MNT_DETACH [pid 384] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 384] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 385] <... umount2 resumed>) = 0 [pid 384] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 386 attached [pid 384] <... clone resumed>, parent_tid=[386], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 386 [pid 385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] set_robust_list(0x7fc84e07e9e0, 24 [pid 384] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... set_robust_list resumed>) = 0 [pid 384] <... futex resumed>) = 0 [pid 386] umount2("./file0", MNT_DETACH [pid 384] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 386] <... umount2 resumed>) = 0 [pid 386] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = 0 [pid 386] <... futex resumed>) = 1 [pid 384] exit_group(0 [pid 386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 384] <... exit_group resumed>) = ? [pid 385] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 386] <... futex resumed>) = ? [pid 385] +++ exited with 0 +++ [pid 386] +++ exited with 0 +++ [pid 384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 387 ./strace-static-x86_64: Process 387 attached [pid 387] set_robust_list(0x5555564465e0, 24) = 0 [pid 387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 387] setpgid(0, 0) = 0 [pid 387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 387] write(3, "1000", 4) = 4 [pid 387] close(3) = 0 [pid 387] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 387] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 387] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 388 attached [pid 388] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... clone resumed>, parent_tid=[388], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 388 [pid 387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] <... futex resumed>) = 0 [pid 388] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] <... futex resumed>) = 0 [pid 388] mount(NULL, "./file0", "ramfs", 0, NULL [pid 387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... mount resumed>) = 0 [pid 388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... futex resumed>) = 0 [pid 387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] <... futex resumed>) = 0 [pid 388] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... mount resumed>) = 0 [pid 388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... futex resumed>) = 0 [pid 387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... futex resumed>) = 0 [pid 387] <... futex resumed>) = 1 [pid 388] umount2("./file0", MNT_DETACH [pid 387] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 388] <... umount2 resumed>) = 0 [pid 387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... mmap resumed>) = 0x7fc84e05e000 [pid 388] <... futex resumed>) = 0 [pid 387] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... mprotect resumed>) = 0 [pid 387] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 389 attached , parent_tid=[389], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 389 [pid 389] set_robust_list(0x7fc84e07e9e0, 24 [pid 387] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... set_robust_list resumed>) = 0 [pid 387] <... futex resumed>) = 0 [pid 389] umount2("./file0", MNT_DETACH [pid 387] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... umount2 resumed>) = 0 [pid 389] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... futex resumed>) = 0 [pid 389] <... futex resumed>) = 1 [pid 387] exit_group(0 [pid 389] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 387] <... exit_group resumed>) = ? [pid 388] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 389] <... futex resumed>) = ? [pid 388] +++ exited with 0 +++ [pid 389] +++ exited with 0 +++ [pid 387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 390 ./strace-static-x86_64: Process 390 attached [pid 390] set_robust_list(0x5555564465e0, 24) = 0 [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 390] setpgid(0, 0) = 0 [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 390] write(3, "1000", 4) = 4 [pid 390] close(3) = 0 [pid 390] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 390] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 390] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 391 attached , parent_tid=[391], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 391 [pid 391] set_robust_list(0x7fc84e09f9e0, 24 [pid 390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] <... set_robust_list resumed>) = 0 [pid 390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] <... futex resumed>) = 0 [pid 391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 390] <... futex resumed>) = 0 [pid 391] mount(NULL, "./file0", "ramfs", 0, NULL [pid 390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] <... mount resumed>) = 0 [pid 391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] <... futex resumed>) = 0 [pid 391] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] <... mount resumed>) = 0 [pid 391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] <... futex resumed>) = 0 [pid 391] umount2("./file0", MNT_DETACH [pid 390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 390] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 391] <... umount2 resumed>) = 0 [pid 390] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 392 attached [pid 392] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... clone resumed>, parent_tid=[392], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 392 [pid 392] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 391] <... futex resumed>) = 0 [pid 390] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] <... futex resumed>) = 0 [pid 392] umount2("./file0", MNT_DETACH [pid 390] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... umount2 resumed>) = 0 [pid 392] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 390] <... futex resumed>) = 0 [pid 392] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] exit_group(0) = ? [pid 391] <... futex resumed>) = ? [pid 391] +++ exited with 0 +++ [pid 392] <... futex resumed>) = ? [pid 392] +++ exited with 0 +++ [pid 390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 393 ./strace-static-x86_64: Process 393 attached [pid 393] set_robust_list(0x5555564465e0, 24) = 0 [pid 393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 393] setpgid(0, 0) = 0 [pid 393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 393] write(3, "1000", 4) = 4 [pid 393] close(3) = 0 [pid 393] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 393] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 393] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[394], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 394 [pid 393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 394 attached [pid 394] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 394] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 394] <... futex resumed>) = 1 [pid 394] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 394] <... futex resumed>) = 1 [pid 394] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 394] <... futex resumed>) = 1 [pid 393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] umount2("./file0", MNT_DETACH [pid 393] <... futex resumed>) = 0 [pid 393] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] <... umount2 resumed>) = 0 [pid 394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 394] <... futex resumed>) = 0 [pid 393] <... mmap resumed>) = 0x7fc84e05e000 [pid 394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 393] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 395 attached , parent_tid=[395], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 395 [pid 395] set_robust_list(0x7fc84e07e9e0, 24 [pid 393] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... set_robust_list resumed>) = 0 [pid 393] <... futex resumed>) = 0 [pid 395] umount2("./file0", MNT_DETACH [pid 393] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 395] <... umount2 resumed>) = 0 [pid 395] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 395] <... futex resumed>) = 1 [pid 393] exit_group(0 [pid 395] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] <... exit_group resumed>) = ? [pid 394] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 395] <... futex resumed>) = ? [pid 394] +++ exited with 0 +++ [pid 395] +++ exited with 0 +++ [pid 393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 396 attached , child_tidptr=0x5555564465d0) = 396 [pid 396] set_robust_list(0x5555564465e0, 24) = 0 [pid 396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 396] setpgid(0, 0) = 0 [pid 396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 396] write(3, "1000", 4) = 4 [pid 396] close(3) = 0 [pid 396] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 396] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 396] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 397 attached , parent_tid=[397], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 397 [pid 397] set_robust_list(0x7fc84e09f9e0, 24 [pid 396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... set_robust_list resumed>) = 0 [pid 397] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 396] <... futex resumed>) = 0 [pid 397] mount(NULL, "./file0", "ramfs", 0, NULL [pid 396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... mount resumed>) = 0 [pid 397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 396] <... futex resumed>) = 0 [pid 397] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... mount resumed>) = 0 [pid 397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 396] <... futex resumed>) = 0 [pid 396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] umount2("./file0", MNT_DETACH [pid 396] <... futex resumed>) = 0 [pid 396] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 397] <... umount2 resumed>) = 0 [pid 397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... mmap resumed>) = 0x7fc84e05e000 [pid 396] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 397] <... futex resumed>) = 0 [pid 396] <... mprotect resumed>) = 0 [pid 396] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 398 attached [pid 398] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 398] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... clone resumed>, parent_tid=[398], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 398 [pid 396] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 398] <... futex resumed>) = 0 [pid 398] umount2("./file0", MNT_DETACH) = 0 [pid 398] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 398] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] exit_group(0) = ? [pid 397] <... futex resumed>) = ? [pid 398] <... futex resumed>) = ? [pid 397] +++ exited with 0 +++ [pid 398] +++ exited with 0 +++ [pid 396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 399 ./strace-static-x86_64: Process 399 attached [pid 399] set_robust_list(0x5555564465e0, 24) = 0 [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 399] setpgid(0, 0) = 0 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 399] write(3, "1000", 4) = 4 [pid 399] close(3) = 0 [pid 399] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 399] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 399] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[400], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 400 [pid 399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 400 attached [pid 400] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 400] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 400] <... futex resumed>) = 1 [pid 400] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 400] <... futex resumed>) = 1 [pid 400] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 400] <... futex resumed>) = 1 [pid 399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] umount2("./file0", MNT_DETACH [pid 399] <... futex resumed>) = 0 [pid 399] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 399] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 400] <... umount2 resumed>) = 0 [pid 399] <... mprotect resumed>) = 0 [pid 400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 400] <... futex resumed>) = 0 ./strace-static-x86_64: Process 401 attached [pid 400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] <... clone resumed>, parent_tid=[401], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 401 [pid 401] set_robust_list(0x7fc84e07e9e0, 24 [pid 399] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... set_robust_list resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 401] umount2("./file0", MNT_DETACH [pid 399] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] <... umount2 resumed>) = 0 [pid 401] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 399] <... futex resumed>) = 0 [pid 399] exit_group(0 [pid 401] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] <... exit_group resumed>) = ? [pid 400] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 401] <... futex resumed>) = ? [pid 400] +++ exited with 0 +++ [pid 401] +++ exited with 0 +++ [pid 399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 402 ./strace-static-x86_64: Process 402 attached [pid 402] set_robust_list(0x5555564465e0, 24) = 0 [pid 402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 402] setpgid(0, 0) = 0 [pid 402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 402] write(3, "1000", 4) = 4 [pid 402] close(3) = 0 [pid 402] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 402] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 402] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 403 attached , parent_tid=[403], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 403 [pid 403] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 403] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 403] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 403] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 403] <... mount resumed>) = 0 [pid 403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 403] umount2("./file0", MNT_DETACH [pid 402] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... umount2 resumed>) = 0 [pid 403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] <... futex resumed>) = 0 [pid 402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 402] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 402] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 404 attached , parent_tid=[404], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 404 [pid 404] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 404] <... futex resumed>) = 0 [pid 404] umount2("./file0", MNT_DETACH) = 0 [pid 402] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] exit_group(0 [pid 403] <... futex resumed>) = ? [pid 402] <... exit_group resumed>) = ? [pid 403] +++ exited with 0 +++ [pid 404] <... futex resumed>) = ? [pid 404] +++ exited with 0 +++ [pid 402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 405 ./strace-static-x86_64: Process 405 attached [pid 405] set_robust_list(0x5555564465e0, 24) = 0 [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 405] setpgid(0, 0) = 0 [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 405] write(3, "1000", 4) = 4 [pid 405] close(3) = 0 [pid 405] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 405] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 405] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[406], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 406 [pid 405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 406 attached [pid 406] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 406] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] <... futex resumed>) = 1 [pid 406] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] <... futex resumed>) = 1 [pid 406] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 406] <... futex resumed>) = 1 [pid 405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] umount2("./file0", MNT_DETACH [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 406] <... umount2 resumed>) = 0 [pid 405] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] <... mprotect resumed>) = 0 [pid 405] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 407 attached [pid 405] <... clone resumed>, parent_tid=[407], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 407 [pid 407] set_robust_list(0x7fc84e07e9e0, 24 [pid 405] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] <... set_robust_list resumed>) = 0 [pid 405] <... futex resumed>) = 0 [pid 407] umount2("./file0", MNT_DETACH [pid 405] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... umount2 resumed>) = 0 [pid 407] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] exit_group(0) = ? [pid 406] <... futex resumed>) = ? [pid 406] +++ exited with 0 +++ [pid 407] <... futex resumed>) = ? [pid 407] +++ exited with 0 +++ [pid 405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 408 ./strace-static-x86_64: Process 408 attached [pid 408] set_robust_list(0x5555564465e0, 24) = 0 [pid 408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 408] setpgid(0, 0) = 0 [pid 408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 408] write(3, "1000", 4) = 4 [pid 408] close(3) = 0 [pid 408] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 408] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 408] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 409 attached , parent_tid=[409], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 409 [pid 409] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 409] <... futex resumed>) = 0 [pid 409] mkdir("./file0", 000 [pid 408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = 0 [pid 408] <... futex resumed>) = 1 [pid 409] mount(NULL, "./file0", "ramfs", 0, NULL [pid 408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] <... mount resumed>) = 0 [pid 409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] <... futex resumed>) = 0 [pid 408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 409] <... futex resumed>) = 0 [pid 409] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] <... mount resumed>) = 0 [pid 409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] <... futex resumed>) = 0 [pid 408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 409] <... futex resumed>) = 0 [pid 408] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] umount2("./file0", MNT_DETACH [pid 408] <... futex resumed>) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 409] <... umount2 resumed>) = 0 [pid 408] <... mmap resumed>) = 0x7fc84e05e000 [pid 408] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] <... mprotect resumed>) = 0 [pid 409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 410 attached , parent_tid=[410], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 410 [pid 410] set_robust_list(0x7fc84e07e9e0, 24 [pid 408] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... set_robust_list resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 410] umount2("./file0", MNT_DETACH [pid 408] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... umount2 resumed>) = 0 [pid 410] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 410] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] <... futex resumed>) = 0 [pid 408] exit_group(0) = ? [pid 409] <... futex resumed>) = ? [pid 409] +++ exited with 0 +++ [pid 410] <... futex resumed>) = ? [pid 410] +++ exited with 0 +++ [pid 408] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 411 attached , child_tidptr=0x5555564465d0) = 411 [pid 411] set_robust_list(0x5555564465e0, 24) = 0 [pid 411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 411] setpgid(0, 0) = 0 [pid 411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 411] write(3, "1000", 4) = 4 [pid 411] close(3) = 0 [pid 411] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 411] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 411] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 412 attached , parent_tid=[412], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 412 [pid 412] set_robust_list(0x7fc84e09f9e0, 24 [pid 411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... set_robust_list resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 412] mkdir("./file0", 000 [pid 411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 411] <... futex resumed>) = 0 [pid 412] mount(NULL, "./file0", "ramfs", 0, NULL [pid 411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 412] <... mount resumed>) = 0 [pid 412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... futex resumed>) = 0 [pid 412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... mount resumed>) = 0 [pid 412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] umount2("./file0", MNT_DETACH [pid 411] <... futex resumed>) = 0 [pid 411] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 412] <... umount2 resumed>) = 0 [pid 411] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... mprotect resumed>) = 0 [pid 412] <... futex resumed>) = 0 [pid 411] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 413 attached , parent_tid=[413], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 413 [pid 413] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 413] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 413] <... futex resumed>) = 0 [pid 413] umount2("./file0", MNT_DETACH [pid 411] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... umount2 resumed>) = 0 [pid 413] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... futex resumed>) = 0 [pid 413] <... futex resumed>) = 1 [pid 413] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] exit_group(0) = ? [pid 412] <... futex resumed>) = ? [pid 413] <... futex resumed>) = ? [pid 412] +++ exited with 0 +++ [pid 413] +++ exited with 0 +++ [pid 411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 414 attached , child_tidptr=0x5555564465d0) = 414 [pid 414] set_robust_list(0x5555564465e0, 24) = 0 [pid 414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 414] setpgid(0, 0) = 0 [pid 414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 414] write(3, "1000", 4) = 4 [pid 414] close(3) = 0 [pid 414] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 414] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 414] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[415], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 415 ./strace-static-x86_64: Process 415 attached [pid 415] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 415] <... futex resumed>) = 0 [pid 414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... futex resumed>) = 0 [pid 414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 415] <... futex resumed>) = 0 [pid 415] mount(NULL, "./file0", "ramfs", 0, NULL [pid 414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] <... mount resumed>) = 0 [pid 415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 415] <... futex resumed>) = 0 [pid 415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 415] <... futex resumed>) = 0 [pid 415] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] <... mount resumed>) = 0 [pid 415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... futex resumed>) = 0 [pid 414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 415] <... futex resumed>) = 0 [pid 415] umount2("./file0", MNT_DETACH [pid 414] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... umount2 resumed>) = 0 [pid 414] <... futex resumed>) = 0 [pid 414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 414] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 414] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[416], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 416 [pid 415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 414] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 416 attached [pid 416] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 416] umount2("./file0", MNT_DETACH) = 0 [pid 416] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = 0 [pid 414] exit_group(0 [pid 415] <... futex resumed>) = 0 [pid 414] <... exit_group resumed>) = ? [pid 416] <... futex resumed>) = ? [pid 416] +++ exited with 0 +++ [pid 415] +++ exited with 0 +++ [pid 414] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 417 ./strace-static-x86_64: Process 417 attached [pid 417] set_robust_list(0x5555564465e0, 24) = 0 [pid 417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 417] setpgid(0, 0) = 0 [pid 417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 417] write(3, "1000", 4) = 4 [pid 417] close(3) = 0 [pid 417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 417] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 417] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 418 attached [pid 418] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... clone resumed>, parent_tid=[418], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 418 [pid 417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] <... futex resumed>) = 0 [pid 417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] <... futex resumed>) = 0 [pid 418] mount(NULL, "./file0", "ramfs", 0, NULL [pid 417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] <... mount resumed>) = 0 [pid 418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] <... futex resumed>) = 0 [pid 418] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] <... mount resumed>) = 0 [pid 418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] <... futex resumed>) = 0 [pid 418] umount2("./file0", MNT_DETACH) = 0 [pid 417] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = 0 [pid 417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 417] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 417] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 419 attached , parent_tid=[419], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 419 [pid 419] set_robust_list(0x7fc84e07e9e0, 24 [pid 417] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... set_robust_list resumed>) = 0 [pid 419] umount2("./file0", MNT_DETACH [pid 417] <... futex resumed>) = 0 [pid 417] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... umount2 resumed>) = 0 [pid 419] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 419] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = 0 [pid 417] exit_group(0) = ? [pid 418] <... futex resumed>) = ? [pid 418] +++ exited with 0 +++ [pid 419] <... futex resumed>) = ? [pid 419] +++ exited with 0 +++ [pid 417] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 420 attached , child_tidptr=0x5555564465d0) = 420 [pid 420] set_robust_list(0x5555564465e0, 24) = 0 [pid 420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 420] setpgid(0, 0) = 0 [pid 420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 420] write(3, "1000", 4) = 4 [pid 420] close(3) = 0 [pid 420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 420] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 420] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 421 attached , parent_tid=[421], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 421 [pid 421] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] <... futex resumed>) = 0 [pid 420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 421] mount(NULL, "./file0", "ramfs", 0, NULL [pid 420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] <... mount resumed>) = 0 [pid 421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 421] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] <... mount resumed>) = 0 [pid 421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] <... futex resumed>) = 0 [pid 420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 421] <... futex resumed>) = 0 [pid 421] umount2("./file0", MNT_DETACH [pid 420] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... umount2 resumed>) = 0 [pid 420] <... futex resumed>) = 0 [pid 421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 420] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 420] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 422 attached , parent_tid=[422], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 422 [pid 420] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 420] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 422] umount2("./file0", MNT_DETACH) = 0 [pid 422] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 420] <... futex resumed>) = 0 [pid 420] exit_group(0) = ? [pid 421] <... futex resumed>) = ? [pid 421] +++ exited with 0 +++ [pid 422] +++ exited with 0 +++ [pid 420] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=420, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 423 attached [pid 423] set_robust_list(0x5555564465e0, 24 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 423 [pid 423] <... set_robust_list resumed>) = 0 [pid 423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 423] setpgid(0, 0) = 0 [pid 423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 423] write(3, "1000", 4) = 4 [pid 423] close(3) = 0 [pid 423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 423] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 423] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 424 attached , parent_tid=[424], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 424 [pid 424] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 424] <... futex resumed>) = 0 [pid 424] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 424] <... futex resumed>) = 0 [pid 424] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 424] <... futex resumed>) = 0 [pid 424] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 424] <... futex resumed>) = 0 [pid 424] umount2("./file0", MNT_DETACH [pid 423] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 424] <... umount2 resumed>) = 0 [pid 424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 423] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 423] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 425 attached [pid 425] set_robust_list(0x7fc84e07e9e0, 24 [pid 423] <... clone resumed>, parent_tid=[425], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 425 [pid 425] <... set_robust_list resumed>) = 0 [pid 425] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 425] <... futex resumed>) = 0 [pid 423] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] umount2("./file0", MNT_DETACH) = 0 [pid 425] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 425] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... futex resumed>) = 0 [pid 423] exit_group(0 [pid 424] <... futex resumed>) = ? [pid 423] <... exit_group resumed>) = ? [pid 424] +++ exited with 0 +++ [pid 425] <... futex resumed>) = ? [pid 425] +++ exited with 0 +++ [pid 423] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=423, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 426 ./strace-static-x86_64: Process 426 attached [pid 426] set_robust_list(0x5555564465e0, 24) = 0 [pid 426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 426] setpgid(0, 0) = 0 [pid 426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 426] write(3, "1000", 4) = 4 [pid 426] close(3) = 0 [pid 426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 426] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 426] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[427], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 427 [pid 426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 427 attached [pid 427] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 427] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] <... futex resumed>) = 1 [pid 427] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] <... futex resumed>) = 1 [pid 427] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = 0 [pid 427] <... futex resumed>) = 1 [pid 426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] umount2("./file0", MNT_DETACH [pid 426] <... futex resumed>) = 0 [pid 426] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 427] <... umount2 resumed>) = 0 [pid 426] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... mprotect resumed>) = 0 [pid 427] <... futex resumed>) = 0 [pid 426] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 427] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 428 attached [pid 426] <... clone resumed>, parent_tid=[428], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 428 [pid 428] set_robust_list(0x7fc84e07e9e0, 24 [pid 426] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... set_robust_list resumed>) = 0 [pid 426] <... futex resumed>) = 0 [pid 428] umount2("./file0", MNT_DETACH [pid 426] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] <... umount2 resumed>) = 0 [pid 428] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 426] <... futex resumed>) = 0 [pid 428] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] exit_group(0) = ? [pid 427] <... futex resumed>) = 231 [pid 428] <... futex resumed>) = ? [pid 427] +++ exited with 0 +++ [pid 428] +++ exited with 0 +++ [pid 426] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=426, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 429 ./strace-static-x86_64: Process 429 attached [pid 429] set_robust_list(0x5555564465e0, 24) = 0 [pid 429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 429] setpgid(0, 0) = 0 [pid 429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 429] write(3, "1000", 4) = 4 [pid 429] close(3) = 0 [pid 429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 429] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 429] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 430 attached , parent_tid=[430], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 430 [pid 430] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 430] <... futex resumed>) = 0 [pid 429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 430] <... futex resumed>) = 0 [pid 429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] <... futex resumed>) = 0 [pid 429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 1 [pid 430] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] <... mount resumed>) = 0 [pid 430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 429] <... futex resumed>) = 0 [pid 430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... futex resumed>) = 0 [pid 430] umount2("./file0", MNT_DETACH [pid 429] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 429] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 430] <... umount2 resumed>) = 0 [pid 429] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 431 attached ) = 0 [pid 431] set_robust_list(0x7fc84e07e9e0, 24 [pid 430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] <... clone resumed>, parent_tid=[431], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 431 [pid 431] <... set_robust_list resumed>) = 0 [pid 429] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] umount2("./file0", MNT_DETACH [pid 429] <... futex resumed>) = 0 [pid 429] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 431] <... umount2 resumed>) = 0 [pid 431] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] <... futex resumed>) = 0 [pid 431] <... futex resumed>) = 1 [pid 429] exit_group(0 [pid 431] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] <... exit_group resumed>) = ? [pid 431] <... futex resumed>) = ? [pid 430] <... futex resumed>) = ? [pid 430] +++ exited with 0 +++ [pid 431] +++ exited with 0 +++ [pid 429] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 432 ./strace-static-x86_64: Process 432 attached [pid 432] set_robust_list(0x5555564465e0, 24) = 0 [pid 432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 432] setpgid(0, 0) = 0 [pid 432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 432] write(3, "1000", 4) = 4 [pid 432] close(3) = 0 [pid 432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 432] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 432] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 433 attached , parent_tid=[433], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 433 [pid 432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 433] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] mount(NULL, "./file0", "ramfs", 0, NULL [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] <... mount resumed>) = 0 [pid 433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 432] <... futex resumed>) = 0 [pid 432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 432] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 433] umount2("./file0", MNT_DETACH [pid 432] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[434], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 434 [pid 433] <... umount2 resumed>) = 0 [pid 432] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 432] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 434 attached [pid 433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] set_robust_list(0x7fc84e07e9e0, 24 [pid 433] <... futex resumed>) = 0 [pid 434] <... set_robust_list resumed>) = 0 [pid 433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 434] umount2("./file0", MNT_DETACH) = 0 [pid 434] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 432] <... futex resumed>) = 0 [pid 432] exit_group(0) = ? [pid 433] <... futex resumed>) = ? [pid 434] +++ exited with 0 +++ [pid 433] +++ exited with 0 +++ [pid 432] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 435 attached , child_tidptr=0x5555564465d0) = 435 [pid 435] set_robust_list(0x5555564465e0, 24) = 0 [pid 435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 435] setpgid(0, 0) = 0 [pid 435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 435] write(3, "1000", 4) = 4 [pid 435] close(3) = 0 [pid 435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 435] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 435] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 436 attached , parent_tid=[436], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 436 [pid 436] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 436] <... futex resumed>) = 0 [pid 436] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 436] <... futex resumed>) = 0 [pid 436] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 435] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 436] <... futex resumed>) = 0 [pid 436] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 435] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... mount resumed>) = 0 [pid 436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 435] <... futex resumed>) = 0 [pid 435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 435] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 435] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[437], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 437 [pid 435] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 437 attached [pid 437] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 437] umount2("./file0", MNT_DETACH) = 0 [pid 436] umount2("./file0", MNT_DETACH [pid 437] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 435] <... futex resumed>) = 0 [pid 436] <... umount2 resumed>) = 0 [pid 437] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] exit_group(0) = ? [pid 437] <... futex resumed>) = ? [pid 437] +++ exited with 0 +++ [pid 436] <... futex resumed>) = ? [pid 436] +++ exited with 0 +++ [pid 435] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 438 ./strace-static-x86_64: Process 438 attached [pid 438] set_robust_list(0x5555564465e0, 24) = 0 [pid 438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 438] setpgid(0, 0) = 0 [pid 438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 438] write(3, "1000", 4) = 4 [pid 438] close(3) = 0 [pid 438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 438] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 438] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[439], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 439 [pid 438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 439 attached [pid 439] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 439] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [pid 438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 1 [pid 439] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [pid 438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 1 [pid 439] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [pid 438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 438] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 438] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[440], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 440 [pid 438] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 438] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 1 [pid 439] umount2("./file0", MNT_DETACH) = 0 [pid 439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 439] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 440 attached [pid 440] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 440] umount2("./file0", MNT_DETACH) = 0 [pid 440] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 438] <... futex resumed>) = 0 [pid 438] exit_group(0 [pid 440] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 439] <... futex resumed>) = ? [pid 438] <... exit_group resumed>) = ? [pid 440] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 439] +++ exited with 0 +++ [pid 440] +++ exited with 0 +++ [pid 438] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=438, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 441 attached , child_tidptr=0x5555564465d0) = 441 [pid 441] set_robust_list(0x5555564465e0, 24) = 0 [pid 441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 441] setpgid(0, 0) = 0 [pid 441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 441] write(3, "1000", 4) = 4 [pid 441] close(3) = 0 [pid 441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 441] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 441] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 442 attached [pid 442] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] <... clone resumed>, parent_tid=[442], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 442 [pid 441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 442] <... futex resumed>) = 0 [pid 442] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 442] <... futex resumed>) = 0 [pid 441] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 441] <... futex resumed>) = 0 [pid 441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 442] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 441] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 442] <... mount resumed>) = 0 [pid 442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 441] <... futex resumed>) = 0 [pid 442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 442] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] <... futex resumed>) = 0 [pid 442] umount2("./file0", MNT_DETACH [pid 441] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 442] <... umount2 resumed>) = 0 [pid 441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... mmap resumed>) = 0x7fc84e05e000 [pid 442] <... futex resumed>) = 0 [pid 441] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] <... mprotect resumed>) = 0 [pid 441] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 443 attached , parent_tid=[443], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 443 [pid 443] set_robust_list(0x7fc84e07e9e0, 24 [pid 441] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] <... set_robust_list resumed>) = 0 [pid 441] <... futex resumed>) = 0 [pid 443] umount2("./file0", MNT_DETACH [pid 441] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 443] <... umount2 resumed>) = 0 [pid 443] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = 1 [pid 441] exit_group(0 [pid 443] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] <... exit_group resumed>) = ? [pid 442] <... futex resumed>) = ? [pid 443] <... futex resumed>) = ? [pid 442] +++ exited with 0 +++ [pid 443] +++ exited with 0 +++ [pid 441] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=441, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 444 attached , child_tidptr=0x5555564465d0) = 444 [pid 444] set_robust_list(0x5555564465e0, 24) = 0 [pid 444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 444] setpgid(0, 0) = 0 [pid 444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 444] write(3, "1000", 4) = 4 [pid 444] close(3) = 0 [pid 444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 444] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 444] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[445], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 445 ./strace-static-x86_64: Process 445 attached [pid 445] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 445] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 445] <... futex resumed>) = 0 [pid 445] mkdir("./file0", 000 [pid 444] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 445] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 445] <... futex resumed>) = 0 [pid 445] mount(NULL, "./file0", "ramfs", 0, NULL [pid 444] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... mount resumed>) = 0 [pid 445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 444] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 445] umount2("./file0", MNT_DETACH [pid 444] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[446], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 446 [pid 445] <... umount2 resumed>) = 0 [pid 444] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 0 ./strace-static-x86_64: Process 446 attached [pid 446] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 446] umount2("./file0", MNT_DETACH [pid 445] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 446] <... umount2 resumed>) = 0 [pid 446] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = 0 [pid 444] exit_group(0) = ? [pid 445] <... futex resumed>) = ? [pid 446] <... futex resumed>) = ? [pid 446] +++ exited with 0 +++ [pid 445] +++ exited with 0 +++ [pid 444] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=444, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 447 ./strace-static-x86_64: Process 447 attached [pid 447] set_robust_list(0x5555564465e0, 24) = 0 [pid 447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 447] setpgid(0, 0) = 0 [pid 447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 447] write(3, "1000", 4) = 4 [pid 447] close(3) = 0 [pid 447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 447] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 447] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 448 attached [pid 448] set_robust_list(0x7fc84e09f9e0, 24 [pid 447] <... clone resumed>, parent_tid=[448], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 448 [pid 448] <... set_robust_list resumed>) = 0 [pid 448] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 448] <... futex resumed>) = 0 [pid 448] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 448] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 448] <... futex resumed>) = 0 [pid 448] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 447] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 448] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 448] <... futex resumed>) = 0 [pid 448] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 447] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... mount resumed>) = 0 [pid 448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 447] <... futex resumed>) = 0 [pid 447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] umount2("./file0", MNT_DETACH [pid 447] <... futex resumed>) = 0 [pid 447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 447] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 448] <... umount2 resumed>) = 0 [pid 447] <... mprotect resumed>) = 0 [pid 447] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[449], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 449 [pid 448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 447] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... futex resumed>) = 0 [pid 448] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 449 attached [pid 449] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 449] umount2("./file0", MNT_DETACH) = 0 [pid 449] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = 1 [pid 447] exit_group(0 [pid 449] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] <... exit_group resumed>) = ? [pid 449] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 448] <... futex resumed>) = ? [pid 449] +++ exited with 0 +++ [pid 448] +++ exited with 0 +++ [pid 447] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 450 ./strace-static-x86_64: Process 450 attached [pid 450] set_robust_list(0x5555564465e0, 24) = 0 [pid 450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 450] setpgid(0, 0) = 0 [pid 450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 450] write(3, "1000", 4) = 4 [pid 450] close(3) = 0 [pid 450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 450] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 450] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[451], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 451 [pid 450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 451 attached [pid 451] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 451] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 451] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = 0 [pid 450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... futex resumed>) = 1 [pid 451] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 451] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = 0 [pid 450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... futex resumed>) = 1 [pid 451] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 451] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = 0 [pid 450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 450] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 450] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[452], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 452 [pid 450] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... futex resumed>) = 1 [pid 451] umount2("./file0", MNT_DETACH) = 0 [pid 451] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 451] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 452 attached [pid 452] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 452] umount2("./file0", MNT_DETACH) = 0 [pid 452] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = 0 [pid 450] exit_group(0) = ? [pid 451] <... futex resumed>) = ? [pid 451] +++ exited with 0 +++ [pid 452] <... futex resumed>) = ? [pid 452] +++ exited with 0 +++ [pid 450] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=450, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 453 ./strace-static-x86_64: Process 453 attached [pid 453] set_robust_list(0x5555564465e0, 24) = 0 [pid 453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 453] setpgid(0, 0) = 0 [pid 453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 453] write(3, "1000", 4) = 4 [pid 453] close(3) = 0 [pid 453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 453] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 453] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[454], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 454 [pid 453] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 454 attached [pid 454] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 454] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 454] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... futex resumed>) = 1 [pid 454] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 454] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... futex resumed>) = 1 [pid 454] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 454] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 453] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 453] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 454] <... futex resumed>) = 1 [pid 453] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 454] umount2("./file0", MNT_DETACH [pid 453] <... mprotect resumed>) = 0 [pid 453] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[455], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 455 [pid 454] <... umount2 resumed>) = 0 [pid 453] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = 0 [pid 453] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 455 attached [pid 455] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 455] umount2("./file0", MNT_DETACH) = 0 [pid 455] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 455] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 453] <... futex resumed>) = 0 [pid 453] exit_group(0) = ? [pid 454] <... futex resumed>) = ? [pid 454] +++ exited with 0 +++ [pid 455] <... futex resumed>) = ? [pid 455] +++ exited with 0 +++ [pid 453] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=453, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 456 attached , child_tidptr=0x5555564465d0) = 456 [pid 456] set_robust_list(0x5555564465e0, 24) = 0 [pid 456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 456] setpgid(0, 0) = 0 [pid 456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 456] write(3, "1000", 4) = 4 [pid 456] close(3) = 0 [pid 456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 456] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 456] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 457 attached [pid 457] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 457] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] <... clone resumed>, parent_tid=[457], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 457 [pid 456] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 457] <... futex resumed>) = 0 [pid 456] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 457] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] <... futex resumed>) = 0 [pid 457] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 457] <... futex resumed>) = 0 [pid 457] mount(NULL, "./file0", "ramfs", 0, NULL [pid 456] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... mount resumed>) = 0 [pid 457] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 457] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... futex resumed>) = 0 [pid 457] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 457] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] <... futex resumed>) = 0 [pid 457] umount2("./file0", MNT_DETACH [pid 456] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 456] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 456] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 456] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[458], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 458 [pid 457] <... umount2 resumed>) = 0 [pid 456] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = 0 [pid 456] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 458 attached [pid 458] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 458] umount2("./file0", MNT_DETACH) = 0 [pid 458] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 458] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] <... futex resumed>) = 0 [pid 456] exit_group(0) = ? [pid 457] <... futex resumed>) = ? [pid 457] +++ exited with 0 +++ [pid 458] <... futex resumed>) = ? [pid 458] +++ exited with 0 +++ [pid 456] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=456, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 459 ./strace-static-x86_64: Process 459 attached [pid 459] set_robust_list(0x5555564465e0, 24) = 0 [pid 459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 459] setpgid(0, 0) = 0 [pid 459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 459] write(3, "1000", 4) = 4 [pid 459] close(3) = 0 [pid 459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 459] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 459] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 460 attached , parent_tid=[460], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 460 [pid 460] set_robust_list(0x7fc84e09f9e0, 24 [pid 459] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... set_robust_list resumed>) = 0 [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 460] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] <... futex resumed>) = 0 [pid 460] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] <... futex resumed>) = 0 [pid 460] mount(NULL, "./file0", "ramfs", 0, NULL [pid 459] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] <... mount resumed>) = 0 [pid 460] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 459] <... futex resumed>) = 0 [pid 460] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] <... futex resumed>) = 0 [pid 460] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 459] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] <... mount resumed>) = 0 [pid 460] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... futex resumed>) = 0 [pid 460] <... futex resumed>) = 1 [pid 459] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] umount2("./file0", MNT_DETACH [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 459] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 459] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 459] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 460] <... umount2 resumed>) = 0 [pid 460] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 461 attached ) = 0 [pid 459] <... clone resumed>, parent_tid=[461], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 461 [pid 461] set_robust_list(0x7fc84e07e9e0, 24 [pid 460] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 461] <... set_robust_list resumed>) = 0 [pid 459] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] umount2("./file0", MNT_DETACH [pid 459] <... futex resumed>) = 0 [pid 459] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... umount2 resumed>) = 0 [pid 461] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... futex resumed>) = 0 [pid 461] <... futex resumed>) = 1 [pid 461] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] exit_group(0) = ? [pid 460] <... futex resumed>) = ? [pid 460] +++ exited with 0 +++ [pid 461] <... futex resumed>) = 230 [pid 461] +++ exited with 0 +++ [pid 459] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=459, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 462 ./strace-static-x86_64: Process 462 attached [pid 462] set_robust_list(0x5555564465e0, 24) = 0 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 462] setpgid(0, 0) = 0 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 462] write(3, "1000", 4) = 4 [pid 462] close(3) = 0 [pid 462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 462] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 462] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 463 attached , parent_tid=[463], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 463 [pid 463] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 463] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] <... futex resumed>) = 0 [pid 462] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 463] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] <... futex resumed>) = 0 [pid 463] mount(NULL, "./file0", "ramfs", 0, NULL [pid 462] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... mount resumed>) = 0 [pid 463] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] <... futex resumed>) = 0 [pid 463] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 462] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... mount resumed>) = 0 [pid 463] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 463] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 463] <... futex resumed>) = 0 [pid 462] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] umount2("./file0", MNT_DETACH [pid 462] <... futex resumed>) = 0 [pid 463] <... umount2 resumed>) = 0 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 463] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... mmap resumed>) = 0x7fc84e05e000 [pid 463] <... futex resumed>) = 0 [pid 462] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 463] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] <... mprotect resumed>) = 0 [pid 462] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 464 attached , parent_tid=[464], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 464 [pid 464] set_robust_list(0x7fc84e07e9e0, 24 [pid 462] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] <... set_robust_list resumed>) = 0 [pid 462] <... futex resumed>) = 0 [pid 462] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] umount2("./file0", MNT_DETACH) = 0 [pid 464] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 462] <... futex resumed>) = 0 [pid 464] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] exit_group(0 [pid 463] <... futex resumed>) = ? [pid 464] <... futex resumed>) = ? [pid 462] <... exit_group resumed>) = ? [pid 463] +++ exited with 0 +++ [pid 464] +++ exited with 0 +++ [pid 462] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=462, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 465 attached [pid 465] set_robust_list(0x5555564465e0, 24) = 0 [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 465 [pid 465] <... prctl resumed>) = 0 [pid 465] setpgid(0, 0) = 0 [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 465] write(3, "1000", 4) = 4 [pid 465] close(3) = 0 [pid 465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 465] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 465] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[466], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 466 [pid 465] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 466 attached [pid 466] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 466] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 466] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... futex resumed>) = 1 [pid 466] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 466] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... futex resumed>) = 1 [pid 466] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 466] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 465] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 465] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 465] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[467], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 467 [pid 465] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 465] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... futex resumed>) = 1 [pid 466] umount2("./file0", MNT_DETACH) = 0 [pid 466] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 466] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 467 attached [pid 467] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 467] umount2("./file0", MNT_DETACH) = 0 [pid 467] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 467] <... futex resumed>) = 1 [pid 465] exit_group(0 [pid 467] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] <... exit_group resumed>) = ? [pid 466] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 467] <... futex resumed>) = ? [pid 466] +++ exited with 0 +++ [pid 467] +++ exited with 0 +++ [pid 465] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=465, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 468 ./strace-static-x86_64: Process 468 attached [pid 468] set_robust_list(0x5555564465e0, 24) = 0 [pid 468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 468] setpgid(0, 0) = 0 [pid 468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 468] write(3, "1000", 4) = 4 [pid 468] close(3) = 0 [pid 468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 468] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 468] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[469], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 469 ./strace-static-x86_64: Process 469 attached [pid 469] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 469] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... futex resumed>) = 0 [pid 468] <... futex resumed>) = 1 [pid 469] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 469] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 469] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 469] <... futex resumed>) = 0 [pid 469] mount(NULL, "./file0", "ramfs", 0, NULL [pid 468] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... mount resumed>) = 0 [pid 469] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 469] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = 0 [pid 468] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 469] <... futex resumed>) = 0 [pid 469] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 468] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... mount resumed>) = 0 [pid 469] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 469] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = 0 [pid 468] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 469] <... futex resumed>) = 0 [pid 469] umount2("./file0", MNT_DETACH [pid 468] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 469] <... umount2 resumed>) = 0 [pid 468] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 469] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 469] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... mprotect resumed>) = 0 [pid 468] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 470 attached [pid 470] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 470] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... clone resumed>, parent_tid=[470], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 470 [pid 468] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 470] <... futex resumed>) = 0 [pid 468] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] umount2("./file0", MNT_DETACH) = 0 [pid 470] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 470] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = 0 [pid 468] exit_group(0) = ? [pid 469] <... futex resumed>) = ? [pid 469] +++ exited with 0 +++ [pid 470] <... futex resumed>) = ? [pid 470] +++ exited with 0 +++ [pid 468] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=468, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 471 ./strace-static-x86_64: Process 471 attached [pid 471] set_robust_list(0x5555564465e0, 24) = 0 [pid 471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 471] setpgid(0, 0) = 0 [pid 471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 471] write(3, "1000", 4) = 4 [pid 471] close(3) = 0 [pid 471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 471] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 471] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 473 attached , parent_tid=[473], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 473 [pid 473] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] <... futex resumed>) = 0 [pid 471] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... futex resumed>) = 0 [pid 471] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] <... futex resumed>) = 0 [pid 473] mount(NULL, "./file0", "ramfs", 0, NULL [pid 471] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] <... mount resumed>) = 0 [pid 473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... futex resumed>) = 0 [pid 471] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 473] <... futex resumed>) = 0 [pid 471] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 471] <... futex resumed>) = 0 [pid 473] umount2("./file0", MNT_DETACH [pid 471] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 471] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 471] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 473] <... umount2 resumed>) = 0 [pid 473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... clone resumed>, parent_tid=[474], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 474 [pid 471] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 471] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] <... futex resumed>) = 0 [pid 473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 474 attached [pid 474] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 474] umount2("./file0", MNT_DETACH) = 0 [pid 474] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 471] <... futex resumed>) = 0 [pid 471] exit_group(0) = ? [pid 473] <... futex resumed>) = ? [pid 473] +++ exited with 0 +++ [pid 474] +++ exited with 0 +++ [pid 471] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=471, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 475 ./strace-static-x86_64: Process 475 attached [pid 475] set_robust_list(0x5555564465e0, 24) = 0 [pid 475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 475] setpgid(0, 0) = 0 [pid 475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 475] write(3, "1000", 4) = 4 [pid 475] close(3) = 0 [pid 475] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 475] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 475] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 476 attached , parent_tid=[476], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 476 [pid 476] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 476] <... futex resumed>) = 0 [pid 476] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 476] <... futex resumed>) = 0 [pid 475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 476] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] <... futex resumed>) = 0 [pid 475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 476] <... futex resumed>) = 0 [pid 476] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 476] <... mount resumed>) = 0 [pid 476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 475] <... futex resumed>) = 0 [pid 476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] <... futex resumed>) = 0 [pid 476] umount2("./file0", MNT_DETACH [pid 475] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 475] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 475] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 476] <... umount2 resumed>) = 0 [pid 476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 475] <... clone resumed>, parent_tid=[477], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 477 [pid 476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 477 attached [pid 475] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 477] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 477] umount2("./file0", MNT_DETACH) = 0 [pid 477] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 475] <... futex resumed>) = 0 [pid 475] exit_group(0) = ? [pid 476] <... futex resumed>) = ? [pid 476] +++ exited with 0 +++ [pid 477] +++ exited with 0 +++ [pid 475] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=475, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 478 attached , child_tidptr=0x5555564465d0) = 478 [pid 478] set_robust_list(0x5555564465e0, 24) = 0 [pid 478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 478] setpgid(0, 0) = 0 [pid 478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 478] write(3, "1000", 4) = 4 [pid 478] close(3) = 0 [pid 478] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 478] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 478] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 479 attached , parent_tid=[479], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 479 [pid 479] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] mkdir("./file0", 000 [pid 478] <... futex resumed>) = 0 [pid 479] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 479] <... futex resumed>) = 0 [pid 479] mount(NULL, "./file0", "ramfs", 0, NULL [pid 478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 479] <... mount resumed>) = 0 [pid 479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 479] <... futex resumed>) = 0 [pid 479] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 479] <... mount resumed>) = 0 [pid 479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 478] <... futex resumed>) = 0 [pid 478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 478] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 478] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 478] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[480], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 480 [pid 479] umount2("./file0", MNT_DETACH [pid 478] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 478] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 480 attached [pid 480] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 480] umount2("./file0", MNT_DETACH [pid 479] <... umount2 resumed>) = 0 [pid 479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... umount2 resumed>) = 0 [pid 480] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... futex resumed>) = 0 [pid 478] exit_group(0) = ? [pid 480] <... futex resumed>) = ? [pid 480] +++ exited with 0 +++ [pid 479] <... futex resumed>) = ? [pid 479] +++ exited with 0 +++ [pid 478] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=478, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 481 ./strace-static-x86_64: Process 481 attached [pid 481] set_robust_list(0x5555564465e0, 24) = 0 [pid 481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 481] setpgid(0, 0) = 0 [pid 481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 481] write(3, "1000", 4) = 4 [pid 481] close(3) = 0 [pid 481] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 481] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 481] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 482 attached , parent_tid=[482], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 482 [pid 482] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 482] <... futex resumed>) = 0 [pid 482] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... futex resumed>) = 0 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] mount(NULL, "./file0", "ramfs", 0, NULL [pid 481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... mount resumed>) = 0 [pid 482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] <... futex resumed>) = 0 [pid 481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 482] <... futex resumed>) = 0 [pid 482] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... mount resumed>) = 0 [pid 482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] <... futex resumed>) = 0 [pid 481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 482] <... futex resumed>) = 0 [pid 482] umount2("./file0", MNT_DETACH [pid 481] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 482] <... umount2 resumed>) = 0 [pid 482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 481] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 481] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 483 attached , parent_tid=[483], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 483 [pid 483] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 483] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 483] <... futex resumed>) = 0 [pid 483] umount2("./file0", MNT_DETACH) = 0 [pid 483] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 483] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] exit_group(0 [pid 482] <... futex resumed>) = ? [pid 481] <... exit_group resumed>) = ? [pid 482] +++ exited with 0 +++ [pid 483] <... futex resumed>) = ? [pid 483] +++ exited with 0 +++ [pid 481] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=481, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 484 ./strace-static-x86_64: Process 484 attached [pid 484] set_robust_list(0x5555564465e0, 24) = 0 [pid 484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 484] setpgid(0, 0) = 0 [pid 484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 484] write(3, "1000", 4) = 4 [pid 484] close(3) = 0 [pid 484] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 484] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 484] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 485 attached , parent_tid=[485], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 485 [pid 485] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] <... futex resumed>) = 0 [pid 484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 485] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] <... futex resumed>) = 0 [pid 484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] <... futex resumed>) = 0 [pid 484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 485] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] <... futex resumed>) = 0 [pid 484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] <... futex resumed>) = 0 [pid 485] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 485] <... futex resumed>) = 0 [pid 485] umount2("./file0", MNT_DETACH [pid 484] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 484] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 485] <... umount2 resumed>) = 0 [pid 485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 484] <... mprotect resumed>) = 0 [pid 485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 486 attached , parent_tid=[486], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 486 [pid 486] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 484] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] umount2("./file0", MNT_DETACH [pid 484] <... futex resumed>) = 0 [pid 484] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] <... umount2 resumed>) = 0 [pid 486] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 484] <... futex resumed>) = 0 [pid 484] exit_group(0) = ? [pid 485] <... futex resumed>) = ? [pid 485] +++ exited with 0 +++ [pid 486] +++ exited with 0 +++ [pid 484] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 487 ./strace-static-x86_64: Process 487 attached [pid 487] set_robust_list(0x5555564465e0, 24) = 0 [pid 487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 487] setpgid(0, 0) = 0 [pid 487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 487] write(3, "1000", 4) = 4 [pid 487] close(3) = 0 [pid 487] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 487] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 487] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 488 attached , parent_tid=[488], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 488 [pid 488] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 488] <... futex resumed>) = 0 [pid 488] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 488] <... futex resumed>) = 0 [pid 488] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 488] <... futex resumed>) = 0 [pid 488] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... mount resumed>) = 0 [pid 488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 487] <... futex resumed>) = 0 [pid 487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 487] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 487] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 487] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 488] umount2("./file0", MNT_DETACH [pid 487] <... clone resumed>, parent_tid=[489], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 489 [pid 487] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 487] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 489 attached [pid 489] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 489] umount2("./file0", MNT_DETACH [pid 488] <... umount2 resumed>) = 0 [pid 488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] <... umount2 resumed>) = 0 [pid 489] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] <... futex resumed>) = 0 [pid 487] exit_group(0) = ? [pid 488] <... futex resumed>) = ? [pid 489] <... futex resumed>) = ? [pid 489] +++ exited with 0 +++ [pid 488] +++ exited with 0 +++ [pid 487] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=487, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 490 ./strace-static-x86_64: Process 490 attached [pid 490] set_robust_list(0x5555564465e0, 24) = 0 [pid 490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 490] setpgid(0, 0) = 0 [pid 490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 490] write(3, "1000", 4) = 4 [pid 490] close(3) = 0 [pid 490] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 490] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 490] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 491 attached , parent_tid=[491], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 491 [pid 491] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 491] <... futex resumed>) = 0 [pid 491] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 490] <... futex resumed>) = 0 [pid 490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 490] <... futex resumed>) = 0 [pid 491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 491] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 490] <... futex resumed>) = 0 [pid 491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 491] umount2("./file0", MNT_DETACH [pid 490] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 490] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 490] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[492], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 492 [pid 490] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 490] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 492 attached [pid 491] <... umount2 resumed>) = 0 [pid 492] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 492] umount2("./file0", MNT_DETACH [pid 491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] <... umount2 resumed>) = 0 [pid 492] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = 0 [pid 490] exit_group(0) = ? [pid 491] <... futex resumed>) = 231 [pid 492] <... futex resumed>) = ? [pid 491] +++ exited with 0 +++ [pid 492] +++ exited with 0 +++ [pid 490] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=490, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 493 ./strace-static-x86_64: Process 493 attached [pid 493] set_robust_list(0x5555564465e0, 24) = 0 [pid 493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 493] setpgid(0, 0) = 0 [pid 493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 493] write(3, "1000", 4) = 4 [pid 493] close(3) = 0 [pid 493] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 493] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 493] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 494 attached , parent_tid=[494], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 494 [pid 494] set_robust_list(0x7fc84e09f9e0, 24 [pid 493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... set_robust_list resumed>) = 0 [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 494] <... futex resumed>) = 1 [pid 493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] mount(NULL, "./file0", "ramfs", 0, NULL [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] <... mount resumed>) = 0 [pid 494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 493] <... futex resumed>) = 0 [pid 494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 493] <... futex resumed>) = 0 [pid 494] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] <... mount resumed>) = 0 [pid 494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = 0 [pid 494] <... futex resumed>) = 1 [pid 493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] umount2("./file0", MNT_DETACH [pid 493] <... futex resumed>) = 0 [pid 493] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 493] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 494] <... umount2 resumed>) = 0 [pid 493] <... mprotect resumed>) = 0 [pid 493] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[495], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 495 [pid 493] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 493] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 495 attached [pid 495] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 495] umount2("./file0", MNT_DETACH) = 0 [pid 495] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 493] <... futex resumed>) = 0 [pid 493] exit_group(0) = ? [pid 494] <... futex resumed>) = ? [pid 494] +++ exited with 0 +++ [pid 495] +++ exited with 0 +++ [pid 493] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=493, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 496 ./strace-static-x86_64: Process 496 attached [pid 496] set_robust_list(0x5555564465e0, 24) = 0 [pid 496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 496] setpgid(0, 0) = 0 [pid 496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 496] write(3, "1000", 4) = 4 [pid 496] close(3) = 0 [pid 496] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 496] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 496] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 497 attached , parent_tid=[497], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 497 [pid 497] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 497] <... futex resumed>) = 0 [pid 497] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 497] <... futex resumed>) = 0 [pid 497] mount(NULL, "./file0", "ramfs", 0, NULL [pid 496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... mount resumed>) = 0 [pid 497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 497] <... futex resumed>) = 0 [pid 497] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] <... mount resumed>) = 0 [pid 497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] <... futex resumed>) = 0 [pid 496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 497] <... futex resumed>) = 0 [pid 496] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] umount2("./file0", MNT_DETACH [pid 496] <... futex resumed>) = 0 [pid 497] <... umount2 resumed>) = 0 [pid 497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 496] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 496] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 498 attached [pid 498] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 498] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] <... clone resumed>, parent_tid=[498], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 498 [pid 496] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 498] <... futex resumed>) = 0 [pid 496] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 498] umount2("./file0", MNT_DETACH) = 0 [pid 498] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 496] <... futex resumed>) = 0 [pid 498] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] exit_group(0) = ? [pid 498] <... futex resumed>) = ? [pid 497] <... futex resumed>) = ? [pid 497] +++ exited with 0 +++ [pid 498] +++ exited with 0 +++ [pid 496] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=496, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 499 ./strace-static-x86_64: Process 499 attached [pid 499] set_robust_list(0x5555564465e0, 24) = 0 [pid 499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 499] setpgid(0, 0) = 0 [pid 499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 499] write(3, "1000", 4) = 4 [pid 499] close(3) = 0 [pid 499] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 499] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 499] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 500 attached [pid 500] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... clone resumed>, parent_tid=[500], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 500 [pid 499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 500] <... futex resumed>) = 0 [pid 500] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 500] <... futex resumed>) = 0 [pid 500] mount(NULL, "./file0", "ramfs", 0, NULL [pid 499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] <... mount resumed>) = 0 [pid 500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... futex resumed>) = 0 [pid 499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 500] <... futex resumed>) = 0 [pid 500] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 500] <... futex resumed>) = 0 [pid 499] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] umount2("./file0", MNT_DETACH [pid 499] <... futex resumed>) = 0 [pid 499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 499] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 499] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 500] <... umount2 resumed>) = 0 [pid 500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... clone resumed>, parent_tid=[501], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 501 ./strace-static-x86_64: Process 501 attached [pid 499] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] set_robust_list(0x7fc84e07e9e0, 24 [pid 499] <... futex resumed>) = 0 [pid 501] <... set_robust_list resumed>) = 0 [pid 499] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] umount2("./file0", MNT_DETACH) = 0 [pid 501] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 499] <... futex resumed>) = 0 [pid 501] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] exit_group(0) = ? [pid 500] <... futex resumed>) = ? [pid 500] +++ exited with 0 +++ [pid 501] <... futex resumed>) = ? [pid 501] +++ exited with 0 +++ [pid 499] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=499, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 502 ./strace-static-x86_64: Process 502 attached [pid 502] set_robust_list(0x5555564465e0, 24) = 0 [pid 502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 502] setpgid(0, 0) = 0 [pid 502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 502] write(3, "1000", 4) = 4 [pid 502] close(3) = 0 [pid 502] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 502] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 502] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 503 attached , parent_tid=[503], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 503 [pid 503] set_robust_list(0x7fc84e09f9e0, 24 [pid 502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... set_robust_list resumed>) = 0 [pid 502] <... futex resumed>) = 0 [pid 503] mkdir("./file0", 000 [pid 502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 0 [pid 503] <... futex resumed>) = 1 [pid 502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] mount(NULL, "./file0", "ramfs", 0, NULL [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... mount resumed>) = 0 [pid 503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 0 [pid 503] <... futex resumed>) = 1 [pid 502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... mount resumed>) = 0 [pid 503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 0 [pid 503] <... futex resumed>) = 1 [pid 502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] umount2("./file0", MNT_DETACH [pid 502] <... futex resumed>) = 0 [pid 502] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 502] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 502] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 503] <... umount2 resumed>) = 0 [pid 502] <... clone resumed>, parent_tid=[504], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 504 ./strace-static-x86_64: Process 504 attached [pid 503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] set_robust_list(0x7fc84e07e9e0, 24 [pid 503] <... futex resumed>) = 0 [pid 504] <... set_robust_list resumed>) = 0 [pid 502] <... futex resumed>) = 0 [pid 503] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 504] umount2("./file0", MNT_DETACH [pid 502] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... umount2 resumed>) = 0 [pid 504] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 0 [pid 504] <... futex resumed>) = 1 [pid 502] exit_group(0 [pid 504] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 503] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 502] <... exit_group resumed>) = ? [pid 504] <... futex resumed>) = ? [pid 503] +++ exited with 0 +++ [pid 504] +++ exited with 0 +++ [pid 502] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 505 attached , child_tidptr=0x5555564465d0) = 505 [pid 505] set_robust_list(0x5555564465e0, 24) = 0 [pid 505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 505] setpgid(0, 0) = 0 [pid 505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 505] write(3, "1000", 4) = 4 [pid 505] close(3) = 0 [pid 505] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 505] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 505] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 506 attached , parent_tid=[506], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 506 [pid 505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 506] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 505] <... futex resumed>) = 0 [pid 505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 505] <... futex resumed>) = 0 [pid 506] umount2("./file0", MNT_DETACH [pid 505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 506] <... umount2 resumed>) = 0 [pid 506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... mmap resumed>) = 0x7fc84e05e000 [pid 506] <... futex resumed>) = 0 [pid 505] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 506] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] <... mprotect resumed>) = 0 [pid 505] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 507 attached , parent_tid=[507], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 507 [pid 507] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 507] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 507] <... futex resumed>) = 0 [pid 507] umount2("./file0", MNT_DETACH [pid 505] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] <... umount2 resumed>) = 0 [pid 507] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 507] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 505] exit_group(0 [pid 506] <... futex resumed>) = ? [pid 505] <... exit_group resumed>) = ? [pid 507] <... futex resumed>) = ? [pid 507] +++ exited with 0 +++ [pid 506] +++ exited with 0 +++ [pid 505] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 508 ./strace-static-x86_64: Process 508 attached [pid 508] set_robust_list(0x5555564465e0, 24) = 0 [pid 508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 508] setpgid(0, 0) = 0 [pid 508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 508] write(3, "1000", 4) = 4 [pid 508] close(3) = 0 [pid 508] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 508] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 508] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 509 attached , parent_tid=[509], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 509 [pid 509] set_robust_list(0x7fc84e09f9e0, 24 [pid 508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... set_robust_list resumed>) = 0 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 509] <... futex resumed>) = 1 [pid 508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] mount(NULL, "./file0", "ramfs", 0, NULL [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... mount resumed>) = 0 [pid 509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 509] <... futex resumed>) = 1 [pid 508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... mount resumed>) = 0 [pid 509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 508] <... futex resumed>) = 0 [pid 508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 508] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 509] umount2("./file0", MNT_DETACH [pid 508] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[510], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 510 [pid 508] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 508] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 510 attached [pid 510] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 510] umount2("./file0", MNT_DETACH [pid 509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... umount2 resumed>) = 0 [pid 510] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 508] exit_group(0 [pid 509] <... futex resumed>) = 0 [pid 508] <... exit_group resumed>) = ? [pid 509] +++ exited with 0 +++ [pid 510] <... futex resumed>) = ? [pid 510] +++ exited with 0 +++ [pid 508] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 511 ./strace-static-x86_64: Process 511 attached [pid 511] set_robust_list(0x5555564465e0, 24) = 0 [pid 511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 511] setpgid(0, 0) = 0 [pid 511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 511] write(3, "1000", 4) = 4 [pid 511] close(3) = 0 [pid 511] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 511] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 511] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 512 attached , parent_tid=[512], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 512 [pid 512] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] mkdir("./file0", 000 [pid 511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] <... futex resumed>) = 0 [pid 512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 512] <... futex resumed>) = 0 [pid 512] mount(NULL, "./file0", "ramfs", 0, NULL [pid 511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... mount resumed>) = 0 [pid 512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 511] <... futex resumed>) = 0 [pid 512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... mount resumed>) = 0 [pid 512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 511] <... futex resumed>) = 0 [pid 511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 512] umount2("./file0", MNT_DETACH [pid 511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 511] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 512] <... umount2 resumed>) = 0 [pid 511] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... clone resumed>, parent_tid=[513], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 513 [pid 512] <... futex resumed>) = 0 [pid 511] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 511] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 513 attached [pid 513] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 513] umount2("./file0", MNT_DETACH [pid 512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 513] <... umount2 resumed>) = 0 [pid 513] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 0 [pid 511] exit_group(0) = ? [pid 512] <... futex resumed>) = ? [pid 513] <... futex resumed>) = ? [pid 513] +++ exited with 0 +++ [pid 512] +++ exited with 0 +++ [pid 511] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 514 ./strace-static-x86_64: Process 514 attached [pid 514] set_robust_list(0x5555564465e0, 24) = 0 [pid 514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 514] setpgid(0, 0) = 0 [pid 514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 514] write(3, "1000", 4) = 4 [pid 514] close(3) = 0 [pid 514] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 514] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 514] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[515], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 515 [pid 514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 515 attached ) = 0 [pid 515] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 515] mkdir("./file0", 000 [pid 514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 515] <... futex resumed>) = 0 [pid 514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 514] <... futex resumed>) = 0 [pid 514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 514] <... futex resumed>) = 0 [pid 514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 514] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 515] umount2("./file0", MNT_DETACH [pid 514] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[516], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 516 [pid 514] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 514] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 516 attached [pid 515] <... umount2 resumed>) = 0 [pid 516] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 516] umount2("./file0", MNT_DETACH [pid 515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... umount2 resumed>) = 0 [pid 516] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = 0 [pid 514] exit_group(0) = ? [pid 515] <... futex resumed>) = ? [pid 516] <... futex resumed>) = ? [pid 516] +++ exited with 0 +++ [pid 515] +++ exited with 0 +++ [pid 514] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=514, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 517 ./strace-static-x86_64: Process 517 attached [pid 517] set_robust_list(0x5555564465e0, 24) = 0 [pid 517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 517] setpgid(0, 0) = 0 [pid 517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 517] write(3, "1000", 4) = 4 [pid 517] close(3) = 0 [pid 517] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 517] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 517] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 518 attached , parent_tid=[518], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 518 [pid 518] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... futex resumed>) = 0 [pid 518] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] <... futex resumed>) = 0 [pid 517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... futex resumed>) = 0 [pid 518] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 517] <... futex resumed>) = 0 [pid 518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 517] <... futex resumed>) = 0 [pid 517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... mount resumed>) = 0 [pid 518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] <... futex resumed>) = 0 [pid 517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 517] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 517] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[519], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 519 [pid 517] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 517] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 519 attached [pid 519] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 519] umount2("./file0", MNT_DETACH [pid 518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] umount2("./file0", MNT_DETACH [pid 519] <... umount2 resumed>) = 0 [pid 519] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] <... futex resumed>) = 0 [pid 519] <... futex resumed>) = 1 [pid 519] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 518] <... umount2 resumed>) = 0 [pid 518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] exit_group(0) = ? [pid 519] <... futex resumed>) = ? [pid 519] +++ exited with 0 +++ [pid 518] <... futex resumed>) = ? [pid 518] +++ exited with 0 +++ [pid 517] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 520 ./strace-static-x86_64: Process 520 attached [pid 520] set_robust_list(0x5555564465e0, 24) = 0 [pid 520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 520] setpgid(0, 0) = 0 [pid 520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 520] write(3, "1000", 4) = 4 [pid 520] close(3) = 0 [pid 520] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 520] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 520] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 521 attached [pid 521] set_robust_list(0x7fc84e09f9e0, 24 [pid 520] <... clone resumed>, parent_tid=[521], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 521 [pid 521] <... set_robust_list resumed>) = 0 [pid 520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = 0 [pid 521] <... futex resumed>) = 1 [pid 520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] mount(NULL, "./file0", "ramfs", 0, NULL [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] <... mount resumed>) = 0 [pid 521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = 0 [pid 521] <... futex resumed>) = 1 [pid 520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] <... mount resumed>) = 0 [pid 521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 520] <... futex resumed>) = 0 [pid 520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 520] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 520] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[522], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 522 [pid 520] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 520] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 522 attached [pid 522] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 522] umount2("./file0", MNT_DETACH [pid 521] umount2("./file0", MNT_DETACH) = 0 [pid 521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... umount2 resumed>) = 0 [pid 522] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = 0 [pid 520] exit_group(0) = ? [pid 522] <... futex resumed>) = ? [pid 521] <... futex resumed>) = ? [pid 522] +++ exited with 0 +++ [pid 521] +++ exited with 0 +++ [pid 520] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 523 ./strace-static-x86_64: Process 523 attached [pid 523] set_robust_list(0x5555564465e0, 24) = 0 [pid 523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 523] setpgid(0, 0) = 0 [pid 523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 523] write(3, "1000", 4) = 4 [pid 523] close(3) = 0 [pid 523] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 523] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 523] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 524 attached , parent_tid=[524], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 524 [pid 524] set_robust_list(0x7fc84e09f9e0, 24 [pid 523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... set_robust_list resumed>) = 0 [pid 523] <... futex resumed>) = 0 [pid 523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = 0 [pid 524] <... futex resumed>) = 1 [pid 523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] mount(NULL, "./file0", "ramfs", 0, NULL [pid 523] <... futex resumed>) = 0 [pid 523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] <... mount resumed>) = 0 [pid 524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 523] <... futex resumed>) = 0 [pid 524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 523] <... futex resumed>) = 0 [pid 524] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] <... mount resumed>) = 0 [pid 524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 523] <... futex resumed>) = 0 [pid 524] umount2("./file0", MNT_DETACH [pid 523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 523] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 523] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 524] <... umount2 resumed>) = 0 [pid 524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 525 attached ) = 0 [pid 523] <... clone resumed>, parent_tid=[525], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 525 [pid 523] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 523] <... futex resumed>) = 0 [pid 525] set_robust_list(0x7fc84e07e9e0, 24 [pid 523] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] <... set_robust_list resumed>) = 0 [pid 525] umount2("./file0", MNT_DETACH) = 0 [pid 525] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 523] <... futex resumed>) = 0 [pid 523] exit_group(0) = ? [pid 524] <... futex resumed>) = ? [pid 525] +++ exited with 0 +++ [pid 524] +++ exited with 0 +++ [pid 523] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=523, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 526 attached , child_tidptr=0x5555564465d0) = 526 [pid 526] set_robust_list(0x5555564465e0, 24) = 0 [pid 526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 526] setpgid(0, 0) = 0 [pid 526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 526] write(3, "1000", 4) = 4 [pid 526] close(3) = 0 [pid 526] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 526] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 526] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[527], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 527 ./strace-static-x86_64: Process 527 attached [pid 527] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] <... futex resumed>) = 0 [pid 527] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] <... futex resumed>) = 0 [pid 527] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] <... futex resumed>) = 0 [pid 527] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 527] <... futex resumed>) = 0 [pid 527] umount2("./file0", MNT_DETACH [pid 526] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... umount2 resumed>) = 0 [pid 527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... futex resumed>) = 0 [pid 526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 526] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 526] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 528 attached [pid 528] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 528] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... clone resumed>, parent_tid=[528], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 528 [pid 526] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 528] <... futex resumed>) = 0 [pid 528] umount2("./file0", MNT_DETACH [pid 526] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] <... umount2 resumed>) = 0 [pid 528] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 528] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] exit_group(0 [pid 527] <... futex resumed>) = ? [pid 526] <... exit_group resumed>) = ? [pid 527] +++ exited with 0 +++ [pid 528] <... futex resumed>) = ? [pid 528] +++ exited with 0 +++ [pid 526] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=526, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 529 ./strace-static-x86_64: Process 529 attached [pid 529] set_robust_list(0x5555564465e0, 24) = 0 [pid 529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 529] setpgid(0, 0) = 0 [pid 529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 529] write(3, "1000", 4) = 4 [pid 529] close(3) = 0 [pid 529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 529] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 529] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 530 attached , parent_tid=[530], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 530 [pid 530] set_robust_list(0x7fc84e09f9e0, 24 [pid 529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... set_robust_list resumed>) = 0 [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 0 [pid 530] <... futex resumed>) = 1 [pid 529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] mount(NULL, "./file0", "ramfs", 0, NULL [pid 529] <... futex resumed>) = 0 [pid 529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... mount resumed>) = 0 [pid 530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 529] <... futex resumed>) = 0 [pid 530] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 529] <... futex resumed>) = 0 [pid 530] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... mount resumed>) = 0 [pid 530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 0 [pid 530] <... futex resumed>) = 1 [pid 529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 529] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 529] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 531 attached , parent_tid=[531], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 531 [pid 529] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 529] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] umount2("./file0", MNT_DETACH [pid 531] set_robust_list(0x7fc84e07e9e0, 24 [pid 530] <... umount2 resumed>) = 0 [pid 530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 530] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 531] <... set_robust_list resumed>) = 0 [pid 531] umount2("./file0", MNT_DETACH) = 0 [pid 531] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 529] <... futex resumed>) = 0 [pid 529] exit_group(0) = ? [pid 530] <... futex resumed>) = ? [pid 530] +++ exited with 0 +++ [pid 531] +++ exited with 0 +++ [pid 529] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=529, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 532 ./strace-static-x86_64: Process 532 attached [pid 532] set_robust_list(0x5555564465e0, 24) = 0 [pid 532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 532] setpgid(0, 0) = 0 [pid 532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 532] write(3, "1000", 4) = 4 [pid 532] close(3) = 0 [pid 532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 532] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 532] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 533 attached , parent_tid=[533], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 533 [pid 533] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] <... futex resumed>) = 0 [pid 533] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] <... futex resumed>) = 0 [pid 533] mount(NULL, "./file0", "ramfs", 0, NULL [pid 532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 533] <... mount resumed>) = 0 [pid 533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 533] <... futex resumed>) = 0 [pid 533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] <... futex resumed>) = 0 [pid 532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 533] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = 0 [pid 532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 533] <... futex resumed>) = 0 [pid 532] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] umount2("./file0", MNT_DETACH [pid 532] <... futex resumed>) = 0 [pid 532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 532] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 533] <... umount2 resumed>) = 0 [pid 532] <... mprotect resumed>) = 0 [pid 533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 534 attached [pid 534] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 532] <... clone resumed>, parent_tid=[534], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 534 [pid 534] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] <... futex resumed>) = 0 [pid 534] umount2("./file0", MNT_DETACH) = 0 [pid 532] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 534] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] exit_group(0 [pid 533] <... futex resumed>) = ? [pid 532] <... exit_group resumed>) = ? [pid 533] +++ exited with 0 +++ [pid 534] <... futex resumed>) = ? [pid 534] +++ exited with 0 +++ [pid 532] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=532, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 535 ./strace-static-x86_64: Process 535 attached [pid 535] set_robust_list(0x5555564465e0, 24) = 0 [pid 535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 535] setpgid(0, 0) = 0 [pid 535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 535] write(3, "1000", 4) = 4 [pid 535] close(3) = 0 [pid 535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 535] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 535] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 536 attached [pid 536] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] <... clone resumed>, parent_tid=[536], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 536 [pid 535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 536] <... futex resumed>) = 0 [pid 536] mkdir("./file0", 000 [pid 535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 535] <... futex resumed>) = 0 [pid 536] mount(NULL, "./file0", "ramfs", 0, NULL [pid 535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] <... mount resumed>) = 0 [pid 536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 535] <... futex resumed>) = 0 [pid 536] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] <... mount resumed>) = 0 [pid 536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 535] <... futex resumed>) = 0 [pid 536] umount2("./file0", MNT_DETACH [pid 535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 535] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... umount2 resumed>) = 0 [pid 536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 535] <... futex resumed>) = 0 [pid 536] <... futex resumed>) = 0 [pid 535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] <... mmap resumed>) = 0x7fc84e05e000 [pid 535] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 535] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 537 attached , parent_tid=[537], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 537 [pid 537] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 537] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 537] <... futex resumed>) = 0 [pid 537] umount2("./file0", MNT_DETACH [pid 535] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 537] <... umount2 resumed>) = 0 [pid 537] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 537] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] exit_group(0 [pid 536] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 535] <... exit_group resumed>) = ? [pid 537] <... futex resumed>) = ? [pid 537] +++ exited with 0 +++ [pid 536] +++ exited with 0 +++ [pid 535] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=535, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 538 ./strace-static-x86_64: Process 538 attached [pid 538] set_robust_list(0x5555564465e0, 24) = 0 [pid 538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 538] setpgid(0, 0) = 0 [pid 538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 538] write(3, "1000", 4) = 4 [pid 538] close(3) = 0 [pid 538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 538] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 538] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 539 attached , parent_tid=[539], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 539 [pid 539] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 539] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... futex resumed>) = 0 [pid 539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 539] mount(NULL, "./file0", "ramfs", 0, NULL [pid 538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... mount resumed>) = 0 [pid 539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 539] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... mount resumed>) = 0 [pid 539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] <... futex resumed>) = 0 [pid 538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 538] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] umount2("./file0", MNT_DETACH [pid 538] <... futex resumed>) = 0 [pid 538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 538] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 538] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 540 attached , parent_tid=[540], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 540 [pid 540] set_robust_list(0x7fc84e07e9e0, 24 [pid 538] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... set_robust_list resumed>) = 0 [pid 538] <... futex resumed>) = 0 [pid 540] umount2("./file0", MNT_DETACH [pid 538] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... umount2 resumed>) = 0 [pid 540] <... umount2 resumed>) = 0 [pid 539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] <... futex resumed>) = 0 [pid 538] <... futex resumed>) = 0 [pid 540] <... futex resumed>) = 1 [pid 539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 540] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 538] exit_group(0) = ? [pid 540] <... futex resumed>) = ? [pid 539] <... futex resumed>) = 230 [pid 540] +++ exited with 0 +++ [pid 539] +++ exited with 0 +++ [pid 538] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=538, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 541 ./strace-static-x86_64: Process 541 attached [pid 541] set_robust_list(0x5555564465e0, 24) = 0 [pid 541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 541] setpgid(0, 0) = 0 [pid 541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 541] write(3, "1000", 4) = 4 [pid 541] close(3) = 0 [pid 541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 541] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 541] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 542 attached , parent_tid=[542], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 542 [pid 542] set_robust_list(0x7fc84e09f9e0, 24 [pid 541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] <... set_robust_list resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = 0 [pid 542] <... futex resumed>) = 1 [pid 541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] mount(NULL, "./file0", "ramfs", 0, NULL [pid 541] <... futex resumed>) = 0 [pid 541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... mount resumed>) = 0 [pid 542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 541] <... futex resumed>) = 0 [pid 542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 541] <... futex resumed>) = 0 [pid 542] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... mount resumed>) = 0 [pid 542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = 0 [pid 542] <... futex resumed>) = 1 [pid 541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 541] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 541] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 541] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 542] umount2("./file0", MNT_DETACH [pid 541] <... clone resumed>, parent_tid=[543], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 543 [pid 541] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 541] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... umount2 resumed>) = 0 [pid 542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 543 attached [pid 543] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 543] umount2("./file0", MNT_DETACH) = 0 [pid 543] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 543] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 541] <... futex resumed>) = 0 [pid 541] exit_group(0) = ? [pid 543] <... futex resumed>) = ? [pid 542] <... futex resumed>) = ? [pid 542] +++ exited with 0 +++ [pid 543] +++ exited with 0 +++ [pid 541] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=541, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 544 ./strace-static-x86_64: Process 544 attached [pid 544] set_robust_list(0x5555564465e0, 24) = 0 [pid 544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 544] setpgid(0, 0) = 0 [pid 544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 544] write(3, "1000", 4) = 4 [pid 544] close(3) = 0 [pid 544] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 544] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 544] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 545 attached , parent_tid=[545], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 545 [pid 545] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 545] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 545] <... futex resumed>) = 0 [pid 545] mkdir("./file0", 000 [pid 544] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 545] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... futex resumed>) = 0 [pid 544] <... futex resumed>) = 1 [pid 545] mount(NULL, "./file0", "ramfs", 0, NULL [pid 544] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] <... mount resumed>) = 0 [pid 545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 544] <... futex resumed>) = 0 [pid 545] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 545] <... mount resumed>) = 0 [pid 544] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 544] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 544] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 545] umount2("./file0", MNT_DETACH [pid 544] <... clone resumed>, parent_tid=[546], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 546 [pid 544] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... umount2 resumed>) = 0 [pid 544] <... futex resumed>) = 0 [pid 544] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 546 attached [pid 546] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 546] umount2("./file0", MNT_DETACH [pid 545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 546] <... umount2 resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 546] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = 0 [pid 544] exit_group(0) = ? [pid 546] <... futex resumed>) = ? [pid 546] +++ exited with 0 +++ [pid 545] +++ exited with 0 +++ [pid 544] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=544, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 547 ./strace-static-x86_64: Process 547 attached [pid 547] set_robust_list(0x5555564465e0, 24) = 0 [pid 547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 547] setpgid(0, 0) = 0 [pid 547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 547] write(3, "1000", 4) = 4 [pid 547] close(3) = 0 [pid 547] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 547] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 547] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[548], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 548 [pid 547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 548 attached [pid 548] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 548] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 548] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 547] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] <... mount resumed>) = 0 [pid 548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... futex resumed>) = 0 [pid 547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 547] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 547] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[549], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 549 [pid 547] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 547] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] <... futex resumed>) = 1 [pid 548] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 549 attached ) = 0 [pid 548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 548] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 549] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 549] umount2("./file0", MNT_DETACH) = 0 [pid 549] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 547] <... futex resumed>) = 0 [pid 549] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] exit_group(0 [pid 549] <... futex resumed>) = 231 [pid 547] <... exit_group resumed>) = ? [pid 548] <... futex resumed>) = ? [pid 549] +++ exited with 0 +++ [pid 548] +++ exited with 0 +++ [pid 547] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=547, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 550 ./strace-static-x86_64: Process 550 attached [pid 550] set_robust_list(0x5555564465e0, 24) = 0 [pid 550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 550] setpgid(0, 0) = 0 [pid 550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 550] write(3, "1000", 4) = 4 [pid 550] close(3) = 0 [pid 550] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 550] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 550] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 551 attached , parent_tid=[551], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 551 [pid 551] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 551] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 551] <... futex resumed>) = 0 [pid 550] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 551] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 551] <... futex resumed>) = 0 [pid 551] mount(NULL, "./file0", "ramfs", 0, NULL [pid 550] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... mount resumed>) = 0 [pid 551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] <... futex resumed>) = 0 [pid 550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 550] <... futex resumed>) = 0 [pid 551] <... mount resumed>) = 0 [pid 550] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 551] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 551] <... futex resumed>) = 0 [pid 551] umount2("./file0", MNT_DETACH [pid 550] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 551] <... umount2 resumed>) = 0 [pid 550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 551] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] <... mmap resumed>) = 0x7fc84e05e000 [pid 550] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 550] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 552 attached [pid 552] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 552] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] <... clone resumed>, parent_tid=[552], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 552 [pid 550] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 552] <... futex resumed>) = 0 [pid 550] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] umount2("./file0", MNT_DETACH) = 0 [pid 552] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 550] <... futex resumed>) = 0 [pid 552] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] exit_group(0 [pid 551] <... futex resumed>) = ? [pid 550] <... exit_group resumed>) = ? [pid 551] +++ exited with 0 +++ [pid 552] <... futex resumed>) = ? [pid 552] +++ exited with 0 +++ [pid 550] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=550, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 553 ./strace-static-x86_64: Process 553 attached [pid 553] set_robust_list(0x5555564465e0, 24) = 0 [pid 553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 553] setpgid(0, 0) = 0 [pid 553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 553] write(3, "1000", 4) = 4 [pid 553] close(3) = 0 [pid 553] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 553] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 553] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 554 attached , parent_tid=[554], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 554 [pid 554] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 554] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 554] <... futex resumed>) = 0 [pid 554] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 554] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 554] <... futex resumed>) = 0 [pid 553] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 554] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] <... futex resumed>) = 0 [pid 553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 554] <... futex resumed>) = 0 [pid 553] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 553] <... futex resumed>) = 0 [pid 554] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] umount2("./file0", MNT_DETACH [pid 553] <... futex resumed>) = 0 [pid 553] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 553] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 554] <... umount2 resumed>) = 0 [pid 553] <... mprotect resumed>) = 0 [pid 554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 554] <... futex resumed>) = 0 ./strace-static-x86_64: Process 555 attached [pid 554] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] <... clone resumed>, parent_tid=[555], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 555 [pid 555] set_robust_list(0x7fc84e07e9e0, 24 [pid 553] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 555] <... set_robust_list resumed>) = 0 [pid 553] <... futex resumed>) = 0 [pid 555] umount2("./file0", MNT_DETACH [pid 553] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] <... umount2 resumed>) = 0 [pid 555] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] <... futex resumed>) = 0 [pid 555] <... futex resumed>) = 1 [pid 553] exit_group(0 [pid 555] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] <... exit_group resumed>) = ? [pid 554] <... futex resumed>) = ? [pid 555] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 554] +++ exited with 0 +++ [pid 555] +++ exited with 0 +++ [pid 553] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=553, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 556 attached , child_tidptr=0x5555564465d0) = 556 [pid 556] set_robust_list(0x5555564465e0, 24) = 0 [pid 556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 556] setpgid(0, 0) = 0 [pid 556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 556] write(3, "1000", 4) = 4 [pid 556] close(3) = 0 [pid 556] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 556] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 556] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 557 attached , parent_tid=[557], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 557 [pid 557] set_robust_list(0x7fc84e09f9e0, 24 [pid 556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] <... set_robust_list resumed>) = 0 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... futex resumed>) = 1 [pid 557] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... futex resumed>) = 1 [pid 557] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 556] <... futex resumed>) = 0 [pid 556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 557] umount2("./file0", MNT_DETACH [pid 556] <... mmap resumed>) = 0x7fc84e05e000 [pid 556] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 557] <... umount2 resumed>) = 0 [pid 556] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[558], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 558 [pid 556] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 556] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 558 attached [pid 558] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 558] umount2("./file0", MNT_DETACH [pid 557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... umount2 resumed>) = 0 [pid 558] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... futex resumed>) = 0 [pid 556] exit_group(0) = ? [pid 557] <... futex resumed>) = ? [pid 558] <... futex resumed>) = ? [pid 557] +++ exited with 0 +++ [pid 558] +++ exited with 0 +++ [pid 556] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=556, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 559 attached , child_tidptr=0x5555564465d0) = 559 [pid 559] set_robust_list(0x5555564465e0, 24) = 0 [pid 559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 559] setpgid(0, 0) = 0 [pid 559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 559] write(3, "1000", 4) = 4 [pid 559] close(3) = 0 [pid 559] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 559] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 559] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 560 attached [pid 560] set_robust_list(0x7fc84e09f9e0, 24 [pid 559] <... clone resumed>, parent_tid=[560], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 560 [pid 560] <... set_robust_list resumed>) = 0 [pid 559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] <... futex resumed>) = 1 [pid 560] <... futex resumed>) = 0 [pid 560] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 560] <... futex resumed>) = 0 [pid 560] mount(NULL, "./file0", "ramfs", 0, NULL [pid 559] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 560] <... mount resumed>) = 0 [pid 560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 560] <... futex resumed>) = 0 [pid 559] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 560] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 559] <... futex resumed>) = 0 [pid 559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 560] umount2("./file0", MNT_DETACH [pid 559] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 560] <... umount2 resumed>) = 0 [pid 559] <... mmap resumed>) = 0x7fc84e05e000 [pid 559] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 559] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] <... clone resumed>, parent_tid=[561], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 561 [pid 560] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 561 attached [pid 561] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 561] umount2("./file0", MNT_DETACH) = 0 [pid 561] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 559] <... futex resumed>) = 0 [pid 559] exit_group(0) = ? [pid 560] <... futex resumed>) = ? [pid 560] +++ exited with 0 +++ [pid 561] +++ exited with 0 +++ [pid 559] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=559, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 562 attached , child_tidptr=0x5555564465d0) = 562 [pid 562] set_robust_list(0x5555564465e0, 24) = 0 [pid 562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 562] setpgid(0, 0) = 0 [pid 562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 562] write(3, "1000", 4) = 4 [pid 562] close(3) = 0 [pid 562] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 562] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 562] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 563 attached , parent_tid=[563], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 563 [pid 563] set_robust_list(0x7fc84e09f9e0, 24 [pid 562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] <... set_robust_list resumed>) = 0 [pid 563] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] <... futex resumed>) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] mount(NULL, "./file0", "ramfs", 0, NULL [pid 562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 563] <... mount resumed>) = 0 [pid 563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 563] <... mount resumed>) = 0 [pid 563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] umount2("./file0", MNT_DETACH) = 0 [pid 563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 563] <... futex resumed>) = 0 [pid 563] umount2("./file0", MNT_DETACH) = 0 [pid 562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] exit_group(0) = ? [pid 563] <... futex resumed>) = ? [pid 563] +++ exited with 0 +++ [pid 562] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=562, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 564 ./strace-static-x86_64: Process 564 attached [pid 564] set_robust_list(0x5555564465e0, 24) = 0 [pid 564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 564] setpgid(0, 0) = 0 [pid 564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 564] write(3, "1000", 4) = 4 [pid 564] close(3) = 0 [pid 564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 564] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 564] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 565 attached , parent_tid=[565], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 565 [pid 565] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 565] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 565] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 564] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 565] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 564] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 565] <... mount resumed>) = 0 [pid 565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 564] <... futex resumed>) = 0 [pid 565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 565] umount2("./file0", MNT_DETACH [pid 564] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 565] <... umount2 resumed>) = 0 [pid 565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... futex resumed>) = 0 [pid 564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 564] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 564] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 566 attached [pid 566] set_robust_list(0x7fc84e07e9e0, 24 [pid 564] <... clone resumed>, parent_tid=[566], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 566 [pid 566] <... set_robust_list resumed>) = 0 [pid 564] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] umount2("./file0", MNT_DETACH [pid 564] <... futex resumed>) = 0 [pid 564] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 566] <... umount2 resumed>) = 0 [pid 566] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 566] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] exit_group(0 [pid 565] <... futex resumed>) = ? [pid 564] <... exit_group resumed>) = ? [pid 565] +++ exited with 0 +++ [pid 566] <... futex resumed>) = ? [pid 566] +++ exited with 0 +++ [pid 564] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=564, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 567 ./strace-static-x86_64: Process 567 attached [pid 567] set_robust_list(0x5555564465e0, 24) = 0 [pid 567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 567] setpgid(0, 0) = 0 [pid 567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 567] write(3, "1000", 4) = 4 [pid 567] close(3) = 0 [pid 567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 567] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 567] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 567] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 568 attached , parent_tid=[568], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 568 [pid 568] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 568] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 568] <... futex resumed>) = 0 [pid 568] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 567] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 568] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 567] <... futex resumed>) = 0 [pid 567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 568] <... futex resumed>) = 0 [pid 567] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 567] <... futex resumed>) = 0 [pid 567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 567] <... futex resumed>) = 0 [pid 567] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] <... mount resumed>) = 0 [pid 568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 567] <... futex resumed>) = 0 [pid 568] umount2("./file0", MNT_DETACH [pid 567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 567] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 567] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 567] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 567] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 568] <... umount2 resumed>) = 0 [pid 568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] <... clone resumed>, parent_tid=[569], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 569 [pid 568] <... futex resumed>) = 0 [pid 567] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 567] <... futex resumed>) = 0 [pid 567] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 569 attached [pid 569] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 569] umount2("./file0", MNT_DETACH) = 0 [pid 569] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 567] <... futex resumed>) = 0 [pid 569] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 567] exit_group(0 [pid 569] <... futex resumed>) = 231 [pid 567] <... exit_group resumed>) = ? [pid 568] <... futex resumed>) = ? [pid 568] +++ exited with 0 +++ [pid 569] +++ exited with 0 +++ [pid 567] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=567, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 570 ./strace-static-x86_64: Process 570 attached [pid 570] set_robust_list(0x5555564465e0, 24) = 0 [pid 570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 570] setpgid(0, 0) = 0 [pid 570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 570] write(3, "1000", 4) = 4 [pid 570] close(3) = 0 [pid 570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 570] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 570] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 571 attached , parent_tid=[571], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 571 [pid 571] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 571] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] <... futex resumed>) = 0 [pid 570] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] <... futex resumed>) = 0 [pid 571] mount(NULL, "./file0", "ramfs", 0, NULL [pid 570] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] <... mount resumed>) = 0 [pid 571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 570] <... futex resumed>) = 0 [pid 570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] <... futex resumed>) = 0 [pid 571] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 570] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] <... mount resumed>) = 0 [pid 571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 570] <... futex resumed>) = 0 [pid 571] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 571] <... futex resumed>) = 0 [pid 571] umount2("./file0", MNT_DETACH [pid 570] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 571] <... umount2 resumed>) = 0 [pid 571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 571] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 570] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 570] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 572 attached , parent_tid=[572], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 572 [pid 572] set_robust_list(0x7fc84e07e9e0, 24 [pid 570] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] <... set_robust_list resumed>) = 0 [pid 570] <... futex resumed>) = 0 [pid 570] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 572] umount2("./file0", MNT_DETACH) = 0 [pid 572] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 570] <... futex resumed>) = 0 [pid 570] exit_group(0) = ? [pid 571] <... futex resumed>) = ? [pid 571] +++ exited with 0 +++ [pid 572] <... futex resumed>) = ? [pid 572] +++ exited with 0 +++ [pid 570] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=570, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 573 ./strace-static-x86_64: Process 573 attached [pid 573] set_robust_list(0x5555564465e0, 24) = 0 [pid 573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 573] setpgid(0, 0) = 0 [pid 573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 573] write(3, "1000", 4) = 4 [pid 573] close(3) = 0 [pid 573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 573] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 573] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[574], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 574 [pid 573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 574 attached [pid 574] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 574] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = 0 [pid 573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... futex resumed>) = 1 [pid 574] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = 0 [pid 573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... futex resumed>) = 1 [pid 574] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = 0 [pid 573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 573] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 573] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[575], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 575 [pid 573] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 573] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... futex resumed>) = 1 [pid 574] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 575 attached ) = 0 [pid 574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 574] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 575] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 575] umount2("./file0", MNT_DETACH) = 0 [pid 575] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = 0 [pid 573] exit_group(0) = ? [pid 574] <... futex resumed>) = ? [pid 574] +++ exited with 0 +++ [pid 575] <... futex resumed>) = ? [pid 575] +++ exited with 0 +++ [pid 573] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=573, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 576 ./strace-static-x86_64: Process 576 attached [pid 576] set_robust_list(0x5555564465e0, 24) = 0 [pid 576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 576] setpgid(0, 0) = 0 [pid 576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 576] write(3, "1000", 4) = 4 [pid 576] close(3) = 0 [pid 576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 576] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 576] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 577 attached , parent_tid=[577], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 577 [pid 577] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] <... futex resumed>) = 0 [pid 576] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 577] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] <... futex resumed>) = 0 [pid 576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] <... futex resumed>) = 0 [pid 577] mount(NULL, "./file0", "ramfs", 0, NULL [pid 576] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 577] <... mount resumed>) = 0 [pid 577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 576] <... futex resumed>) = 0 [pid 577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 577] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 576] <... futex resumed>) = 0 [pid 577] <... mount resumed>) = 0 [pid 577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 577] <... futex resumed>) = 0 [pid 576] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] umount2("./file0", MNT_DETACH [pid 576] <... futex resumed>) = 0 [pid 577] <... umount2 resumed>) = 0 [pid 577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 576] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 576] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 578 attached [pid 578] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 578] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] <... clone resumed>, parent_tid=[578], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 578 [pid 576] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 576] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] <... futex resumed>) = 0 [pid 578] umount2("./file0", MNT_DETACH) = 0 [pid 578] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 576] <... futex resumed>) = 0 [pid 578] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] exit_group(0) = ? [pid 578] <... futex resumed>) = ? [pid 577] <... futex resumed>) = ? [pid 577] +++ exited with 0 +++ [pid 578] +++ exited with 0 +++ [pid 576] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=576, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 579 ./strace-static-x86_64: Process 579 attached [pid 579] set_robust_list(0x5555564465e0, 24) = 0 [pid 579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 579] setpgid(0, 0) = 0 [pid 579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 579] write(3, "1000", 4) = 4 [pid 579] close(3) = 0 [pid 579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 579] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 579] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[580], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 580 [pid 579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 580 attached [pid 580] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 580] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = 0 [pid 579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 580] <... futex resumed>) = 1 [pid 580] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = 0 [pid 579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 580] <... futex resumed>) = 1 [pid 580] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = 0 [pid 579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 579] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 579] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 580] <... futex resumed>) = 1 [pid 580] umount2("./file0", MNT_DETACH [pid 579] <... clone resumed>, parent_tid=[581], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 581 [pid 579] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 579] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 580] <... umount2 resumed>) = 0 [pid 580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 580] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 581 attached [pid 581] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 581] umount2("./file0", MNT_DETACH) = 0 [pid 581] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 579] <... futex resumed>) = 0 [pid 581] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 579] exit_group(0) = ? [pid 580] <... futex resumed>) = ? [pid 580] +++ exited with 0 +++ [pid 581] <... futex resumed>) = ? [pid 581] +++ exited with 0 +++ [pid 579] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=579, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 582 ./strace-static-x86_64: Process 582 attached [pid 582] set_robust_list(0x5555564465e0, 24) = 0 [pid 582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 582] setpgid(0, 0) = 0 [pid 582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 582] write(3, "1000", 4) = 4 [pid 582] close(3) = 0 [pid 582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 582] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 582] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 583 attached , parent_tid=[583], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 583 [pid 583] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 583] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 583] <... futex resumed>) = 0 [pid 583] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 582] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 583] <... futex resumed>) = 0 [pid 583] mount(NULL, "./file0", "ramfs", 0, NULL [pid 582] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 583] <... mount resumed>) = 0 [pid 583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 582] <... futex resumed>) = 0 [pid 582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 583] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 582] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 583] <... mount resumed>) = 0 [pid 583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 582] <... futex resumed>) = 0 [pid 582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 582] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] umount2("./file0", MNT_DETACH [pid 582] <... futex resumed>) = 0 [pid 582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 582] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 583] <... umount2 resumed>) = 0 [pid 582] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[584], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 584 [pid 582] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 582] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 584 attached [pid 584] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 584] umount2("./file0", MNT_DETACH [pid 583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... umount2 resumed>) = 0 [pid 584] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] <... futex resumed>) = 0 [pid 583] <... futex resumed>) = 0 [pid 582] exit_group(0 [pid 583] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 582] <... exit_group resumed>) = ? [pid 584] <... futex resumed>) = ? [pid 584] +++ exited with 0 +++ [pid 583] +++ exited with 0 +++ [pid 582] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=582, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 585 ./strace-static-x86_64: Process 585 attached [pid 585] set_robust_list(0x5555564465e0, 24) = 0 [pid 585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 585] setpgid(0, 0) = 0 [pid 585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 585] write(3, "1000", 4) = 4 [pid 585] close(3) = 0 [pid 585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 585] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 585] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[586], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 586 [pid 585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 585] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 586 attached [pid 586] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 586] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... futex resumed>) = 0 [pid 585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 585] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 586] <... futex resumed>) = 1 [pid 586] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... futex resumed>) = 0 [pid 585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 585] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 586] <... futex resumed>) = 1 [pid 586] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... futex resumed>) = 0 [pid 586] <... futex resumed>) = 1 [pid 585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] umount2("./file0", MNT_DETACH [pid 585] <... futex resumed>) = 0 [pid 585] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 585] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 586] <... umount2 resumed>) = 0 [pid 586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... mprotect resumed>) = 0 [pid 586] <... futex resumed>) = 0 [pid 585] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 587 attached [pid 586] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 587] set_robust_list(0x7fc84e07e9e0, 24 [pid 585] <... clone resumed>, parent_tid=[587], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 587 [pid 587] <... set_robust_list resumed>) = 0 [pid 585] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] umount2("./file0", MNT_DETACH [pid 585] <... futex resumed>) = 0 [pid 585] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 587] <... umount2 resumed>) = 0 [pid 587] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 585] <... futex resumed>) = 0 [pid 585] exit_group(0) = ? [pid 587] +++ exited with 0 +++ [pid 586] <... futex resumed>) = ? [pid 586] +++ exited with 0 +++ [pid 585] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=585, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 588 ./strace-static-x86_64: Process 588 attached [pid 588] set_robust_list(0x5555564465e0, 24) = 0 [pid 588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 588] setpgid(0, 0) = 0 [pid 588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 588] write(3, "1000", 4) = 4 [pid 588] close(3) = 0 [pid 588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 588] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 588] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 589 attached , parent_tid=[589], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 589 [pid 589] set_robust_list(0x7fc84e09f9e0, 24 [pid 588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... set_robust_list resumed>) = 0 [pid 588] <... futex resumed>) = 0 [pid 589] mkdir("./file0", 000 [pid 588] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 588] <... futex resumed>) = 0 [pid 589] mount(NULL, "./file0", "ramfs", 0, NULL [pid 588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 588] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... mount resumed>) = 0 [pid 589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 588] <... futex resumed>) = 0 [pid 589] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 588] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... mount resumed>) = 0 [pid 589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 588] <... futex resumed>) = 0 [pid 589] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 588] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 588] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 589] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 589] umount2("./file0", MNT_DETACH [pid 588] <... mprotect resumed>) = 0 [pid 588] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 589] <... umount2 resumed>) = 0 [pid 588] <... clone resumed>, parent_tid=[590], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 590 [pid 588] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 588] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 590 attached [pid 590] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 590] umount2("./file0", MNT_DETACH [pid 589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... umount2 resumed>) = 0 [pid 589] <... futex resumed>) = 0 [pid 590] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 588] <... futex resumed>) = 0 [pid 588] exit_group(0) = ? [pid 589] +++ exited with 0 +++ [pid 590] <... futex resumed>) = ? [pid 590] +++ exited with 0 +++ [pid 588] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=588, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 591 attached , child_tidptr=0x5555564465d0) = 591 [pid 591] set_robust_list(0x5555564465e0, 24) = 0 [pid 591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 591] setpgid(0, 0) = 0 [pid 591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 591] write(3, "1000", 4) = 4 [pid 591] close(3) = 0 [pid 591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 591] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 591] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 591] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 592 attached , parent_tid=[592], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 592 [pid 592] set_robust_list(0x7fc84e09f9e0, 24 [pid 591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... set_robust_list resumed>) = 0 [pid 592] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 591] <... futex resumed>) = 0 [pid 592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 0 [pid 592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 592] <... futex resumed>) = 0 [pid 592] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 592] <... futex resumed>) = 0 [pid 591] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... futex resumed>) = 0 [pid 591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 592] <... futex resumed>) = 0 [pid 591] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] umount2("./file0", MNT_DETACH [pid 591] <... futex resumed>) = 0 [pid 591] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 592] <... umount2 resumed>) = 0 [pid 591] <... mmap resumed>) = 0x7fc84e05e000 [pid 592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 592] <... futex resumed>) = 0 [pid 592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... mprotect resumed>) = 0 [pid 591] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 593 attached , parent_tid=[593], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 593 [pid 593] set_robust_list(0x7fc84e07e9e0, 24 [pid 591] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] <... set_robust_list resumed>) = 0 [pid 591] <... futex resumed>) = 0 [pid 593] umount2("./file0", MNT_DETACH [pid 591] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] <... umount2 resumed>) = 0 [pid 593] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... futex resumed>) = 0 [pid 593] <... futex resumed>) = 1 [pid 591] exit_group(0 [pid 593] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... exit_group resumed>) = ? [pid 592] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 593] <... futex resumed>) = ? [pid 592] +++ exited with 0 +++ [pid 593] +++ exited with 0 +++ [pid 591] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=591, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 594 ./strace-static-x86_64: Process 594 attached [pid 594] set_robust_list(0x5555564465e0, 24) = 0 [pid 594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 594] setpgid(0, 0) = 0 [pid 594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 594] write(3, "1000", 4) = 4 [pid 594] close(3) = 0 [pid 594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 594] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 594] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 595 attached [pid 595] set_robust_list(0x7fc84e09f9e0, 24 [pid 594] <... clone resumed>, parent_tid=[595], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 595 [pid 595] <... set_robust_list resumed>) = 0 [pid 594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] mkdir("./file0", 000 [pid 594] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... futex resumed>) = 0 [pid 594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] <... futex resumed>) = 1 [pid 595] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 594] <... futex resumed>) = 0 [pid 595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 594] <... futex resumed>) = 0 [pid 594] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] <... mount resumed>) = 0 [pid 595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 594] <... futex resumed>) = 0 [pid 595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] umount2("./file0", MNT_DETACH [pid 594] <... futex resumed>) = 0 [pid 594] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 595] <... umount2 resumed>) = 0 [pid 594] <... mmap resumed>) = 0x7fc84e05e000 [pid 595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 594] <... mprotect resumed>) = 0 [pid 594] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 596 attached , parent_tid=[596], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 596 [pid 594] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 594] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 596] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 596] umount2("./file0", MNT_DETACH) = 0 [pid 596] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 594] <... futex resumed>) = 0 [pid 594] exit_group(0 [pid 596] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 594] <... exit_group resumed>) = ? [pid 595] <... futex resumed>) = ? [pid 595] +++ exited with 0 +++ [pid 596] <... futex resumed>) = ? [pid 596] +++ exited with 0 +++ [pid 594] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=594, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 597 ./strace-static-x86_64: Process 597 attached [pid 597] set_robust_list(0x5555564465e0, 24) = 0 [pid 597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 597] setpgid(0, 0) = 0 [pid 597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 597] write(3, "1000", 4) = 4 [pid 597] close(3) = 0 [pid 597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 597] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 597] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 597] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 598 attached [pid 598] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] <... clone resumed>, parent_tid=[598], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 598 [pid 597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 598] <... futex resumed>) = 0 [pid 598] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 598] <... futex resumed>) = 0 [pid 598] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 598] <... futex resumed>) = 0 [pid 598] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 597] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... mount resumed>) = 0 [pid 598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 598] <... futex resumed>) = 0 [pid 598] umount2("./file0", MNT_DETACH [pid 597] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... umount2 resumed>) = 0 [pid 598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] <... futex resumed>) = 0 [pid 597] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 597] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 597] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[599], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 599 [pid 597] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 597] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 599 attached [pid 599] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 599] umount2("./file0", MNT_DETACH) = 0 [pid 599] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] <... futex resumed>) = 0 [pid 597] exit_group(0 [pid 598] <... futex resumed>) = ? [pid 597] <... exit_group resumed>) = ? [pid 598] +++ exited with 0 +++ [pid 599] <... futex resumed>) = ? [pid 599] +++ exited with 0 +++ [pid 597] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=597, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 600 ./strace-static-x86_64: Process 600 attached [pid 600] set_robust_list(0x5555564465e0, 24) = 0 [pid 600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 600] setpgid(0, 0) = 0 [pid 600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 600] write(3, "1000", 4) = 4 [pid 600] close(3) = 0 [pid 600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 600] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 600] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 601 attached , parent_tid=[601], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 601 [pid 601] set_robust_list(0x7fc84e09f9e0, 24 [pid 600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... set_robust_list resumed>) = 0 [pid 600] <... futex resumed>) = 0 [pid 600] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... futex resumed>) = 0 [pid 601] <... futex resumed>) = 1 [pid 600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] mount(NULL, "./file0", "ramfs", 0, NULL [pid 600] <... futex resumed>) = 0 [pid 600] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... mount resumed>) = 0 [pid 601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... futex resumed>) = 0 [pid 601] <... futex resumed>) = 1 [pid 600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 600] <... futex resumed>) = 0 [pid 600] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... mount resumed>) = 0 [pid 601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... futex resumed>) = 0 [pid 601] <... futex resumed>) = 1 [pid 601] umount2("./file0", MNT_DETACH [pid 600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 600] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 600] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 600] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 601] <... umount2 resumed>) = 0 [pid 601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 602 attached ) = 0 [pid 600] <... clone resumed>, parent_tid=[602], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 602 [pid 602] set_robust_list(0x7fc84e07e9e0, 24 [pid 601] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 602] <... set_robust_list resumed>) = 0 [pid 600] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] umount2("./file0", MNT_DETACH [pid 600] <... futex resumed>) = 0 [pid 600] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 602] <... umount2 resumed>) = 0 [pid 602] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 1 [pid 600] exit_group(0 [pid 602] ????( [pid 600] <... exit_group resumed>) = ? [pid 601] <... futex resumed>) = ? [pid 601] +++ exited with 0 +++ [pid 602] <... ???? resumed>) = ? [pid 602] +++ exited with 0 +++ [pid 600] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=600, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 603 ./strace-static-x86_64: Process 603 attached [pid 603] set_robust_list(0x5555564465e0, 24) = 0 [pid 603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 603] setpgid(0, 0) = 0 [pid 603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 603] write(3, "1000", 4) = 4 [pid 603] close(3) = 0 [pid 603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 603] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 603] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 603] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 604 attached , parent_tid=[604], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 604 [pid 604] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 604] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] <... futex resumed>) = 0 [pid 603] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] <... futex resumed>) = 0 [pid 603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] <... futex resumed>) = 0 [pid 604] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 604] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] <... futex resumed>) = 0 [pid 604] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 603] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] <... mount resumed>) = 0 [pid 604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] <... futex resumed>) = 0 [pid 603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] <... futex resumed>) = 0 [pid 604] umount2("./file0", MNT_DETACH [pid 603] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] <... umount2 resumed>) = 0 [pid 603] <... futex resumed>) = 0 [pid 604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 604] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 603] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 603] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 605 attached , parent_tid=[605], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 605 [pid 605] set_robust_list(0x7fc84e07e9e0, 24 [pid 603] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] <... set_robust_list resumed>) = 0 [pid 603] <... futex resumed>) = 0 [pid 605] umount2("./file0", MNT_DETACH [pid 603] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] <... umount2 resumed>) = 0 [pid 605] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 603] <... futex resumed>) = 0 [pid 605] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] exit_group(0 [pid 604] <... futex resumed>) = ? [pid 603] <... exit_group resumed>) = ? [pid 604] +++ exited with 0 +++ [pid 605] <... futex resumed>) = ? [pid 605] +++ exited with 0 +++ [pid 603] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=603, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 606 ./strace-static-x86_64: Process 606 attached [pid 606] set_robust_list(0x5555564465e0, 24) = 0 [pid 606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 606] setpgid(0, 0) = 0 [pid 606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 606] write(3, "1000", 4) = 4 [pid 606] close(3) = 0 [pid 606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 606] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 606] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 607 attached [pid 607] set_robust_list(0x7fc84e09f9e0, 24 [pid 606] <... clone resumed>, parent_tid=[607], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 607 [pid 607] <... set_robust_list resumed>) = 0 [pid 607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] <... futex resumed>) = 0 [pid 607] mkdir("./file0", 000 [pid 606] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] <... futex resumed>) = 0 [pid 606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] <... futex resumed>) = 0 [pid 607] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 606] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] <... futex resumed>) = 0 [pid 607] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 606] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 607] <... mount resumed>) = 0 [pid 607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 606] <... futex resumed>) = 0 [pid 607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] <... futex resumed>) = 0 [pid 606] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] umount2("./file0", MNT_DETACH [pid 606] <... futex resumed>) = 0 [pid 606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 607] <... umount2 resumed>) = 0 [pid 606] <... mmap resumed>) = 0x7fc84e05e000 [pid 607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 607] <... futex resumed>) = 0 [pid 606] <... mprotect resumed>) = 0 [pid 607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 608 attached [pid 608] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 608] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] <... clone resumed>, parent_tid=[608], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 608 [pid 606] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 608] <... futex resumed>) = 0 [pid 608] umount2("./file0", MNT_DETACH) = 0 [pid 606] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 608] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 608] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] exit_group(0) = ? [pid 607] <... futex resumed>) = ? [pid 607] +++ exited with 0 +++ [pid 608] <... futex resumed>) = ? [pid 608] +++ exited with 0 +++ [pid 606] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=606, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 609 ./strace-static-x86_64: Process 609 attached [pid 609] set_robust_list(0x5555564465e0, 24) = 0 [pid 609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 609] setpgid(0, 0) = 0 [pid 609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 609] write(3, "1000", 4) = 4 [pid 609] close(3) = 0 [pid 609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 609] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 609] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 610 attached [pid 610] set_robust_list(0x7fc84e09f9e0, 24 [pid 609] <... clone resumed>, parent_tid=[610], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 610 [pid 610] <... set_robust_list resumed>) = 0 [pid 610] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 610] <... futex resumed>) = 0 [pid 610] mkdir("./file0", 000 [pid 609] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 609] <... futex resumed>) = 0 [pid 609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 609] <... futex resumed>) = 0 [pid 609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 610] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 609] <... futex resumed>) = 0 [pid 609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 609] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 609] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 609] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 611 attached , parent_tid=[611], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 611 [pid 609] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 610] umount2("./file0", MNT_DETACH [pid 609] <... futex resumed>) = 0 [pid 609] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] set_robust_list(0x7fc84e07e9e0, 24 [pid 610] <... umount2 resumed>) = 0 [pid 610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 610] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 611] <... set_robust_list resumed>) = 0 [pid 611] umount2("./file0", MNT_DETACH) = 0 [pid 611] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 609] <... futex resumed>) = 0 [pid 609] exit_group(0) = ? [pid 610] <... futex resumed>) = ? [pid 610] +++ exited with 0 +++ [pid 611] +++ exited with 0 +++ [pid 609] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=609, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 612 attached , child_tidptr=0x5555564465d0) = 612 [pid 612] set_robust_list(0x5555564465e0, 24) = 0 [pid 612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 612] setpgid(0, 0) = 0 [pid 612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 612] write(3, "1000", 4) = 4 [pid 612] close(3) = 0 [pid 612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 612] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 612] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 613 attached , parent_tid=[613], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 613 [pid 613] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 613] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 613] mkdir("./file0", 000 [pid 612] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 613] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 613] mount(NULL, "./file0", "ramfs", 0, NULL [pid 612] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] <... mount resumed>) = 0 [pid 613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 613] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 613] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 612] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] <... mount resumed>) = 0 [pid 613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 613] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 613] <... futex resumed>) = 0 [pid 612] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 613] umount2("./file0", MNT_DETACH [pid 612] <... futex resumed>) = 0 [pid 613] <... umount2 resumed>) = 0 [pid 613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 613] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 612] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 612] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 614 attached , parent_tid=[614], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 614 [pid 614] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 614] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 614] <... futex resumed>) = 0 [pid 612] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 614] umount2("./file0", MNT_DETACH) = 0 [pid 614] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] exit_group(0 [pid 613] <... futex resumed>) = ? [pid 612] <... exit_group resumed>) = ? [pid 613] +++ exited with 0 +++ [pid 614] <... futex resumed>) = ? [pid 614] +++ exited with 0 +++ [pid 612] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=612, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 615 ./strace-static-x86_64: Process 615 attached [pid 615] set_robust_list(0x5555564465e0, 24) = 0 [pid 615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 615] setpgid(0, 0) = 0 [pid 615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 615] write(3, "1000", 4) = 4 [pid 615] close(3) = 0 [pid 615] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 615] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 615] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 616 attached [pid 616] set_robust_list(0x7fc84e09f9e0, 24 [pid 615] <... clone resumed>, parent_tid=[616], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 616 [pid 616] <... set_robust_list resumed>) = 0 [pid 615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 615] <... futex resumed>) = 0 [pid 615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 615] <... futex resumed>) = 0 [pid 615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 615] <... futex resumed>) = 0 [pid 615] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] <... mount resumed>) = 0 [pid 616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 615] <... futex resumed>) = 0 [pid 616] umount2("./file0", MNT_DETACH [pid 615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 615] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 615] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[617], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 617 [pid 615] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 615] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 617 attached [pid 617] set_robust_list(0x7fc84e07e9e0, 24 [pid 616] <... umount2 resumed>) = 0 [pid 617] <... set_robust_list resumed>) = 0 [pid 617] umount2("./file0", MNT_DETACH) = 0 [pid 616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] <... futex resumed>) = 0 [pid 616] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 615] <... futex resumed>) = 0 [pid 615] exit_group(0) = ? [pid 617] <... futex resumed>) = ? [pid 617] +++ exited with 0 +++ [pid 616] <... futex resumed>) = ? [pid 616] +++ exited with 0 +++ [pid 615] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=615, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 618 ./strace-static-x86_64: Process 618 attached [pid 618] set_robust_list(0x5555564465e0, 24) = 0 [pid 618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 618] setpgid(0, 0) = 0 [pid 618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 618] write(3, "1000", 4) = 4 [pid 618] close(3) = 0 [pid 618] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 618] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 618] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[619], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 619 ./strace-static-x86_64: Process 619 attached [pid 619] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 619] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 619] <... futex resumed>) = 0 [pid 619] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 618] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 619] <... futex resumed>) = 0 [pid 618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 618] <... futex resumed>) = 0 [pid 619] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 618] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] <... futex resumed>) = 0 [pid 619] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 618] <... futex resumed>) = 0 [pid 618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 618] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 619] umount2("./file0", MNT_DETACH [pid 618] <... mmap resumed>) = 0x7fc84e05e000 [pid 618] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 618] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[620], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 620 [pid 618] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 619] <... umount2 resumed>) = 0 [pid 618] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 620 attached [pid 620] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 620] umount2("./file0", MNT_DETACH [pid 619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 619] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] <... umount2 resumed>) = 0 [pid 620] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] <... futex resumed>) = 0 [pid 618] exit_group(0) = ? [pid 620] <... futex resumed>) = ? [pid 619] <... futex resumed>) = ? [pid 620] +++ exited with 0 +++ [pid 619] +++ exited with 0 +++ [pid 618] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=618, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 621 ./strace-static-x86_64: Process 621 attached [pid 621] set_robust_list(0x5555564465e0, 24) = 0 [pid 621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 621] setpgid(0, 0) = 0 [pid 621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 621] write(3, "1000", 4) = 4 [pid 621] close(3) = 0 [pid 621] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 621] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 621] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 621] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[622], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 622 [pid 621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 621] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 622 attached [pid 622] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 622] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... futex resumed>) = 0 [pid 621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 621] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] <... futex resumed>) = 1 [pid 622] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 621] <... futex resumed>) = 0 [pid 622] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 621] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] <... mount resumed>) = 0 [pid 622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... futex resumed>) = 0 [pid 621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 622] <... futex resumed>) = 1 [pid 621] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 621] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 621] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 621] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[623], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 623 [pid 621] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 621] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 623 attached [pid 623] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 623] umount2("./file0", MNT_DETACH [pid 622] umount2("./file0", MNT_DETACH [pid 623] <... umount2 resumed>) = 0 [pid 623] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... futex resumed>) = 0 [pid 623] <... futex resumed>) = 1 [pid 623] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 622] <... umount2 resumed>) = 0 [pid 622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 622] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 621] exit_group(0 [pid 622] <... futex resumed>) = ? [pid 621] <... exit_group resumed>) = ? [pid 623] <... futex resumed>) = ? [pid 623] +++ exited with 0 +++ [pid 622] +++ exited with 0 +++ [pid 621] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=621, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 624 ./strace-static-x86_64: Process 624 attached [pid 624] set_robust_list(0x5555564465e0, 24) = 0 [pid 624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 624] setpgid(0, 0) = 0 [pid 624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 624] write(3, "1000", 4) = 4 [pid 624] close(3) = 0 [pid 624] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 624] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 624] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 625 attached , parent_tid=[625], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 625 [pid 625] set_robust_list(0x7fc84e09f9e0, 24 [pid 624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... set_robust_list resumed>) = 0 [pid 624] <... futex resumed>) = 0 [pid 625] mkdir("./file0", 000 [pid 624] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 624] <... futex resumed>) = 0 [pid 625] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] <... futex resumed>) = 0 [pid 625] mount(NULL, "./file0", "ramfs", 0, NULL [pid 624] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... mount resumed>) = 0 [pid 625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 624] <... futex resumed>) = 0 [pid 625] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] <... futex resumed>) = 0 [pid 625] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 624] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... mount resumed>) = 0 [pid 625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 624] <... futex resumed>) = 0 [pid 625] umount2("./file0", MNT_DETACH [pid 624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 624] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 625] <... umount2 resumed>) = 0 [pid 624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... mmap resumed>) = 0x7fc84e05e000 [pid 625] <... futex resumed>) = 0 [pid 624] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 625] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] <... mprotect resumed>) = 0 [pid 624] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 626 attached , parent_tid=[626], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 626 [pid 626] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 626] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] <... futex resumed>) = 0 [pid 624] <... futex resumed>) = 1 [pid 626] umount2("./file0", MNT_DETACH) = 0 [pid 626] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 626] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] exit_group(0) = ? [pid 625] <... futex resumed>) = ? [pid 625] +++ exited with 0 +++ [pid 626] <... futex resumed>) = ? [pid 626] +++ exited with 0 +++ [pid 624] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=624, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 627 attached , child_tidptr=0x5555564465d0) = 627 [pid 627] set_robust_list(0x5555564465e0, 24) = 0 [pid 627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 627] setpgid(0, 0) = 0 [pid 627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 627] write(3, "1000", 4) = 4 [pid 627] close(3) = 0 [pid 627] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 627] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 627] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 628 attached , parent_tid=[628], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 628 [pid 628] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] <... futex resumed>) = 0 [pid 628] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] <... futex resumed>) = 0 [pid 628] mount(NULL, "./file0", "ramfs", 0, NULL [pid 627] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... mount resumed>) = 0 [pid 628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] <... futex resumed>) = 0 [pid 628] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 627] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 628] <... mount resumed>) = 0 [pid 628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] <... futex resumed>) = 0 [pid 627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] <... futex resumed>) = 0 [pid 628] umount2("./file0", MNT_DETACH [pid 627] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] <... umount2 resumed>) = 0 [pid 628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] <... futex resumed>) = 0 [pid 627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 627] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 627] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 629 attached [pid 629] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 629] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] <... clone resumed>, parent_tid=[629], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 629 [pid 627] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 629] <... futex resumed>) = 0 [pid 629] umount2("./file0", MNT_DETACH [pid 627] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] <... umount2 resumed>) = 0 [pid 629] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 629] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 627] exit_group(0 [pid 628] <... futex resumed>) = ? [pid 627] <... exit_group resumed>) = ? [pid 628] +++ exited with 0 +++ [pid 629] <... futex resumed>) = ? [pid 629] +++ exited with 0 +++ [pid 627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=627, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 630 ./strace-static-x86_64: Process 630 attached [pid 630] set_robust_list(0x5555564465e0, 24) = 0 [pid 630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 630] setpgid(0, 0) = 0 [pid 630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 630] write(3, "1000", 4) = 4 [pid 630] close(3) = 0 [pid 630] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 630] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 630] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 631 attached [pid 631] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] <... clone resumed>, parent_tid=[631], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 631 [pid 630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 631] <... futex resumed>) = 0 [pid 631] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 630] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 631] <... futex resumed>) = 0 [pid 631] mount(NULL, "./file0", "ramfs", 0, NULL [pid 630] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] <... mount resumed>) = 0 [pid 631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 631] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 630] <... futex resumed>) = 0 [pid 630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 630] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 630] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 631] umount2("./file0", MNT_DETACH [pid 630] <... clone resumed>, parent_tid=[632], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 632 [pid 630] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 630] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 632 attached [pid 632] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 632] umount2("./file0", MNT_DETACH [pid 631] <... umount2 resumed>) = 0 [pid 631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 632] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 630] exit_group(0) = ? [pid 632] <... futex resumed>) = ? [pid 632] +++ exited with 0 +++ [pid 631] <... futex resumed>) = ? [pid 631] +++ exited with 0 +++ [pid 630] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=630, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 633 ./strace-static-x86_64: Process 633 attached [pid 633] set_robust_list(0x5555564465e0, 24) = 0 [pid 633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 633] setpgid(0, 0) = 0 [pid 633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 633] write(3, "1000", 4) = 4 [pid 633] close(3) = 0 [pid 633] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 633] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 633] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 634 attached , parent_tid=[634], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 634 [pid 634] set_robust_list(0x7fc84e09f9e0, 24 [pid 633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... set_robust_list resumed>) = 0 [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 633] <... futex resumed>) = 0 [pid 634] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 633] <... futex resumed>) = 0 [pid 634] mount(NULL, "./file0", "ramfs", 0, NULL [pid 633] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] <... mount resumed>) = 0 [pid 634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] <... futex resumed>) = 0 [pid 634] <... futex resumed>) = 1 [pid 633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] <... mount resumed>) = 0 [pid 634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] <... futex resumed>) = 0 [pid 634] <... futex resumed>) = 1 [pid 633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] umount2("./file0", MNT_DETACH [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 633] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 633] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 635 attached [pid 634] <... umount2 resumed>) = 0 [pid 635] set_robust_list(0x7fc84e07e9e0, 24 [pid 634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... set_robust_list resumed>) = 0 [pid 633] <... clone resumed>, parent_tid=[635], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 635 [pid 635] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 634] <... futex resumed>) = 0 [pid 633] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 634] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 635] umount2("./file0", MNT_DETACH [pid 633] <... futex resumed>) = 0 [pid 633] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 635] <... umount2 resumed>) = 0 [pid 635] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 633] <... futex resumed>) = 0 [pid 635] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 633] exit_group(0) = ? [pid 634] <... futex resumed>) = ? [pid 634] +++ exited with 0 +++ [pid 635] <... futex resumed>) = 230 [pid 635] +++ exited with 0 +++ [pid 633] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=633, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 636 attached , child_tidptr=0x5555564465d0) = 636 [pid 636] set_robust_list(0x5555564465e0, 24) = 0 [pid 636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 636] setpgid(0, 0) = 0 [pid 636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 636] write(3, "1000", 4) = 4 [pid 636] close(3) = 0 [pid 636] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 636] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 636] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[637], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 637 [pid 636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 637 attached [pid 637] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 637] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = 0 [pid 636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] <... futex resumed>) = 1 [pid 637] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 636] <... futex resumed>) = 0 [pid 636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 636] <... futex resumed>) = 0 [pid 636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 636] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 636] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 638 attached , parent_tid=[638], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 638 [pid 638] set_robust_list(0x7fc84e07e9e0, 24 [pid 636] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... set_robust_list resumed>) = 0 [pid 636] <... futex resumed>) = 0 [pid 637] umount2("./file0", MNT_DETACH [pid 636] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] umount2("./file0", MNT_DETACH) = 0 [pid 638] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... umount2 resumed>) = 0 [pid 637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 637] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 638] <... futex resumed>) = 1 [pid 636] <... futex resumed>) = 0 [pid 638] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 636] exit_group(0) = ? [pid 637] <... futex resumed>) = ? [pid 637] +++ exited with 0 +++ [pid 638] <... futex resumed>) = ? [pid 638] +++ exited with 0 +++ [pid 636] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=636, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 639 ./strace-static-x86_64: Process 639 attached [pid 639] set_robust_list(0x5555564465e0, 24) = 0 [pid 639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 639] setpgid(0, 0) = 0 [pid 639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 639] write(3, "1000", 4) = 4 [pid 639] close(3) = 0 [pid 639] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 639] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 639] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 640 attached [pid 640] set_robust_list(0x7fc84e09f9e0, 24 [pid 639] <... clone resumed>, parent_tid=[640], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 640 [pid 640] <... set_robust_list resumed>) = 0 [pid 639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 640] mkdir("./file0", 000 [pid 639] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 639] <... futex resumed>) = 0 [pid 640] mount(NULL, "./file0", "ramfs", 0, NULL [pid 639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] <... mount resumed>) = 0 [pid 640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 639] <... futex resumed>) = 0 [pid 640] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] <... mount resumed>) = 0 [pid 640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 639] <... futex resumed>) = 0 [pid 639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 639] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 639] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 640] umount2("./file0", MNT_DETACH [pid 639] <... clone resumed>, parent_tid=[641], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 641 [pid 639] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 639] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 641 attached [pid 640] <... umount2 resumed>) = 0 [pid 641] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] umount2("./file0", MNT_DETACH [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 641] <... umount2 resumed>) = 0 [pid 641] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 639] <... futex resumed>) = 0 [pid 639] exit_group(0) = ? [pid 640] <... futex resumed>) = ? [pid 640] +++ exited with 0 +++ [pid 641] +++ exited with 0 +++ [pid 639] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=639, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 642 ./strace-static-x86_64: Process 642 attached [pid 642] set_robust_list(0x5555564465e0, 24) = 0 [pid 642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 642] setpgid(0, 0) = 0 [pid 642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 642] write(3, "1000", 4) = 4 [pid 642] close(3) = 0 [pid 642] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 642] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 642] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 643 attached , parent_tid=[643], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 643 [pid 643] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 643] <... futex resumed>) = 0 [pid 643] mkdir("./file0", 000 [pid 642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 643] <... futex resumed>) = 0 [pid 643] mount(NULL, "./file0", "ramfs", 0, NULL [pid 642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... mount resumed>) = 0 [pid 643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 643] <... futex resumed>) = 0 [pid 643] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 643] <... mount resumed>) = 0 [pid 643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 643] <... futex resumed>) = 0 [pid 643] umount2("./file0", MNT_DETACH [pid 642] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] <... umount2 resumed>) = 0 [pid 643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... futex resumed>) = 0 [pid 642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 642] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 642] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 644 attached [pid 644] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 644] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... clone resumed>, parent_tid=[644], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 644 [pid 642] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 644] <... futex resumed>) = 0 [pid 644] umount2("./file0", MNT_DETACH) = 0 [pid 642] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 644] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 644] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] exit_group(0 [pid 643] <... futex resumed>) = ? [pid 642] <... exit_group resumed>) = ? [pid 643] +++ exited with 0 +++ [pid 644] <... futex resumed>) = ? [pid 644] +++ exited with 0 +++ [pid 642] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=642, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 645 ./strace-static-x86_64: Process 645 attached [pid 645] set_robust_list(0x5555564465e0, 24) = 0 [pid 645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 645] setpgid(0, 0) = 0 [pid 645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 645] write(3, "1000", 4) = 4 [pid 645] close(3) = 0 [pid 645] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 645] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 645] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 646 attached [pid 646] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] <... clone resumed>, parent_tid=[646], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 646 [pid 645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 646] <... futex resumed>) = 0 [pid 646] mkdir("./file0", 000 [pid 645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] <... futex resumed>) = 0 [pid 645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 646] <... futex resumed>) = 0 [pid 645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] <... futex resumed>) = 0 [pid 646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 646] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 645] <... futex resumed>) = 0 [pid 646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 646] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] <... futex resumed>) = 0 [pid 646] umount2("./file0", MNT_DETACH [pid 645] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 646] <... umount2 resumed>) = 0 [pid 645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... mmap resumed>) = 0x7fc84e05e000 [pid 646] <... futex resumed>) = 0 [pid 645] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] <... mprotect resumed>) = 0 [pid 645] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 647 attached , parent_tid=[647], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 647 [pid 647] set_robust_list(0x7fc84e07e9e0, 24 [pid 645] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... set_robust_list resumed>) = 0 [pid 645] <... futex resumed>) = 0 [pid 647] umount2("./file0", MNT_DETACH [pid 645] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] <... umount2 resumed>) = 0 [pid 647] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... futex resumed>) = 0 [pid 647] <... futex resumed>) = 1 [pid 647] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] exit_group(0) = ? [pid 646] <... futex resumed>) = 231 [pid 646] +++ exited with 0 +++ [pid 647] <... futex resumed>) = ? [pid 647] +++ exited with 0 +++ [pid 645] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=645, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 648 ./strace-static-x86_64: Process 648 attached [pid 648] set_robust_list(0x5555564465e0, 24) = 0 [pid 648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 648] setpgid(0, 0) = 0 [pid 648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 648] write(3, "1000", 4) = 4 [pid 648] close(3) = 0 [pid 648] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 648] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 648] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 649 attached [pid 649] set_robust_list(0x7fc84e09f9e0, 24 [pid 648] <... clone resumed>, parent_tid=[649], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 649 [pid 648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] <... set_robust_list resumed>) = 0 [pid 649] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 648] <... futex resumed>) = 0 [pid 648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 648] <... futex resumed>) = 0 [pid 648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 648] <... futex resumed>) = 0 [pid 649] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 648] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 648] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... clone resumed>, parent_tid=[650], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 650 [pid 649] umount2("./file0", MNT_DETACH [pid 648] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 648] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 650 attached [pid 650] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 650] umount2("./file0", MNT_DETACH) = 0 [pid 649] <... umount2 resumed>) = 0 [pid 650] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 650] <... futex resumed>) = 1 [pid 649] <... futex resumed>) = 0 [pid 648] <... futex resumed>) = 0 [pid 648] exit_group(0) = ? [pid 650] +++ exited with 0 +++ [pid 649] +++ exited with 0 +++ [pid 648] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=648, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 651 ./strace-static-x86_64: Process 651 attached [pid 651] set_robust_list(0x5555564465e0, 24) = 0 [pid 651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 651] setpgid(0, 0) = 0 [pid 651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 651] write(3, "1000", 4) = 4 [pid 651] close(3) = 0 [pid 651] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 651] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 651] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 652 attached [pid 652] set_robust_list(0x7fc84e09f9e0, 24 [pid 651] <... clone resumed>, parent_tid=[652], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 652 [pid 652] <... set_robust_list resumed>) = 0 [pid 652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 652] <... futex resumed>) = 0 [pid 652] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 652] <... futex resumed>) = 0 [pid 652] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 651] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 652] <... futex resumed>) = 0 [pid 652] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] <... mount resumed>) = 0 [pid 652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 651] <... futex resumed>) = 0 [pid 651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 651] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] umount2("./file0", MNT_DETACH [pid 651] <... futex resumed>) = 0 [pid 651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 652] <... umount2 resumed>) = 0 [pid 651] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 651] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 653 attached [pid 651] <... clone resumed>, parent_tid=[653], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 653 [pid 653] set_robust_list(0x7fc84e07e9e0, 24 [pid 651] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 651] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 653] <... set_robust_list resumed>) = 0 [pid 653] umount2("./file0", MNT_DETACH) = 0 [pid 653] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 651] <... futex resumed>) = 0 [pid 651] exit_group(0 [pid 652] <... futex resumed>) = ? [pid 652] +++ exited with 0 +++ [pid 651] <... exit_group resumed>) = ? [pid 653] +++ exited with 0 +++ [pid 651] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=651, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 654 ./strace-static-x86_64: Process 654 attached [pid 654] set_robust_list(0x5555564465e0, 24) = 0 [pid 654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 654] setpgid(0, 0) = 0 [pid 654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 654] write(3, "1000", 4) = 4 [pid 654] close(3) = 0 [pid 654] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 654] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 654] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[655], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 655 [pid 654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 655 attached [pid 655] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 655] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] <... futex resumed>) = 0 [pid 654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 655] <... futex resumed>) = 1 [pid 655] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] <... futex resumed>) = 0 [pid 655] <... futex resumed>) = 1 [pid 654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 654] <... futex resumed>) = 0 [pid 654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 655] <... mount resumed>) = 0 [pid 655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 654] <... futex resumed>) = 0 [pid 654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 654] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 654] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 654] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[656], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 656 [pid 654] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 654] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 656 attached [pid 656] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 656] umount2("./file0", MNT_DETACH [pid 655] umount2("./file0", MNT_DETACH [pid 656] <... umount2 resumed>) = 0 [pid 656] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] <... futex resumed>) = 0 [pid 656] <... futex resumed>) = 1 [pid 656] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] <... umount2 resumed>) = 0 [pid 655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 655] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] exit_group(0) = ? [pid 656] <... futex resumed>) = ? [pid 656] +++ exited with 0 +++ [pid 655] <... futex resumed>) = ? [pid 655] +++ exited with 0 +++ [pid 654] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=654, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 657 ./strace-static-x86_64: Process 657 attached [pid 657] set_robust_list(0x5555564465e0, 24) = 0 [pid 657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 657] setpgid(0, 0) = 0 [pid 657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 657] write(3, "1000", 4) = 4 [pid 657] close(3) = 0 [pid 657] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 657] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 657] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[658], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 658 ./strace-static-x86_64: Process 658 attached [pid 658] set_robust_list(0x7fc84e09f9e0, 24 [pid 657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... set_robust_list resumed>) = 0 [pid 657] <... futex resumed>) = 0 [pid 658] mkdir("./file0", 000 [pid 657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 657] <... futex resumed>) = 0 [pid 658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 657] <... futex resumed>) = 0 [pid 658] mount(NULL, "./file0", "ramfs", 0, NULL [pid 657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... mount resumed>) = 0 [pid 658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 657] <... futex resumed>) = 0 [pid 658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 657] <... futex resumed>) = 0 [pid 658] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... mount resumed>) = 0 [pid 658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 657] <... futex resumed>) = 0 [pid 657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 657] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 657] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 657] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[659], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 659 [pid 657] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 657] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 659 attached [pid 659] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 659] umount2("./file0", MNT_DETACH [pid 658] umount2("./file0", MNT_DETACH [pid 659] <... umount2 resumed>) = 0 [pid 658] <... umount2 resumed>) = 0 [pid 659] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = 1 [pid 658] <... futex resumed>) = 0 [pid 659] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] <... futex resumed>) = 0 [pid 657] exit_group(0) = ? [pid 658] <... futex resumed>) = ? [pid 658] +++ exited with 0 +++ [pid 659] <... futex resumed>) = ? [pid 659] +++ exited with 0 +++ [pid 657] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=657, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 660 attached , child_tidptr=0x5555564465d0) = 660 [pid 660] set_robust_list(0x5555564465e0, 24) = 0 [pid 660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 660] setpgid(0, 0) = 0 [pid 660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 660] write(3, "1000", 4) = 4 [pid 660] close(3) = 0 [pid 660] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 660] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 660] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 661 attached [pid 661] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 660] <... clone resumed>, parent_tid=[661], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 661 [pid 660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 661] <... futex resumed>) = 0 [pid 661] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 661] <... futex resumed>) = 0 [pid 661] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 661] <... futex resumed>) = 0 [pid 661] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... mount resumed>) = 0 [pid 661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 660] <... futex resumed>) = 0 [pid 660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 660] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 660] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 660] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 661] umount2("./file0", MNT_DETACH [pid 660] <... clone resumed>, parent_tid=[662], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 662 [pid 660] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 660] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 662 attached [pid 662] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 662] umount2("./file0", MNT_DETACH) = 0 [pid 662] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 1 [pid 662] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 661] <... umount2 resumed>) = 0 [pid 661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 660] exit_group(0) = ? [pid 662] <... futex resumed>) = ? [pid 662] +++ exited with 0 +++ [pid 661] <... futex resumed>) = ? [pid 661] +++ exited with 0 +++ [pid 660] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=660, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 663 ./strace-static-x86_64: Process 663 attached [pid 663] set_robust_list(0x5555564465e0, 24) = 0 [pid 663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 663] setpgid(0, 0) = 0 [pid 663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 663] write(3, "1000", 4) = 4 [pid 663] close(3) = 0 [pid 663] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 663] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 663] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 664 attached , parent_tid=[664], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 664 [pid 664] set_robust_list(0x7fc84e09f9e0, 24 [pid 663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] <... set_robust_list resumed>) = 0 [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 664] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 664] <... futex resumed>) = 1 [pid 663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] mount(NULL, "./file0", "ramfs", 0, NULL [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 664] <... mount resumed>) = 0 [pid 664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 664] <... futex resumed>) = 1 [pid 664] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 663] <... futex resumed>) = 0 [pid 664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] umount2("./file0", MNT_DETACH [pid 663] <... futex resumed>) = 0 [pid 663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 663] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 663] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 664] <... umount2 resumed>) = 0 [pid 664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 665 attached ) = 0 [pid 663] <... clone resumed>, parent_tid=[665], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 665 [pid 665] set_robust_list(0x7fc84e07e9e0, 24 [pid 664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] <... set_robust_list resumed>) = 0 [pid 663] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] umount2("./file0", MNT_DETACH [pid 663] <... futex resumed>) = 0 [pid 663] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 665] <... umount2 resumed>) = 0 [pid 665] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] <... futex resumed>) = 0 [pid 665] <... futex resumed>) = 1 [pid 663] exit_group(0 [pid 665] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] <... futex resumed>) = ? [pid 663] <... exit_group resumed>) = ? [pid 665] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 664] +++ exited with 0 +++ [pid 665] +++ exited with 0 +++ [pid 663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 666 ./strace-static-x86_64: Process 666 attached [pid 666] set_robust_list(0x5555564465e0, 24) = 0 [pid 666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 666] setpgid(0, 0) = 0 [pid 666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 666] write(3, "1000", 4) = 4 [pid 666] close(3) = 0 [pid 666] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 666] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 666] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 667 attached , parent_tid=[667], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 667 [pid 667] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 667] <... futex resumed>) = 0 [pid 667] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 667] <... futex resumed>) = 0 [pid 667] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 667] <... futex resumed>) = 0 [pid 667] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 667] <... mount resumed>) = 0 [pid 667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 666] <... futex resumed>) = 0 [pid 666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 666] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 666] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 667] umount2("./file0", MNT_DETACH [pid 666] <... clone resumed>, parent_tid=[668], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 668 [pid 666] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 666] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 668 attached [pid 668] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 668] umount2("./file0", MNT_DETACH) = 0 [pid 668] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = 0 [pid 668] <... futex resumed>) = 1 [pid 668] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 667] <... umount2 resumed>) = 0 [pid 667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 666] exit_group(0) = ? [pid 667] <... futex resumed>) = ? [pid 668] <... futex resumed>) = ? [pid 668] +++ exited with 0 +++ [pid 667] +++ exited with 0 +++ [pid 666] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=666, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 669 ./strace-static-x86_64: Process 669 attached [pid 669] set_robust_list(0x5555564465e0, 24) = 0 [pid 669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 669] setpgid(0, 0) = 0 [pid 669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 669] write(3, "1000", 4) = 4 [pid 669] close(3) = 0 [pid 669] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 669] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 669] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 670 attached , parent_tid=[670], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 670 [pid 670] set_robust_list(0x7fc84e09f9e0, 24 [pid 669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... set_robust_list resumed>) = 0 [pid 669] <... futex resumed>) = 0 [pid 669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] <... futex resumed>) = 0 [pid 670] <... futex resumed>) = 1 [pid 669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] mount(NULL, "./file0", "ramfs", 0, NULL [pid 669] <... futex resumed>) = 0 [pid 669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... mount resumed>) = 0 [pid 670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 669] <... futex resumed>) = 0 [pid 669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 669] <... futex resumed>) = 0 [pid 669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... mount resumed>) = 0 [pid 670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 669] <... futex resumed>) = 0 [pid 670] umount2("./file0", MNT_DETACH [pid 669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 669] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 670] <... umount2 resumed>) = 0 [pid 669] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] <... mprotect resumed>) = 0 [pid 670] <... futex resumed>) = 0 [pid 669] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 671 attached [pid 670] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] set_robust_list(0x7fc84e07e9e0, 24 [pid 669] <... clone resumed>, parent_tid=[671], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 671 [pid 671] <... set_robust_list resumed>) = 0 [pid 669] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 671] umount2("./file0", MNT_DETACH [pid 669] <... futex resumed>) = 0 [pid 669] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 671] <... umount2 resumed>) = 0 [pid 671] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 669] <... futex resumed>) = 0 [pid 671] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 669] exit_group(0) = ? [pid 670] <... futex resumed>) = ? [pid 670] +++ exited with 0 +++ [pid 671] <... futex resumed>) = ? [pid 671] +++ exited with 0 +++ [pid 669] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=669, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 672 ./strace-static-x86_64: Process 672 attached [pid 672] set_robust_list(0x5555564465e0, 24) = 0 [pid 672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 672] setpgid(0, 0) = 0 [pid 672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 672] write(3, "1000", 4) = 4 [pid 672] close(3) = 0 [pid 672] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 672] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 672] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 673 attached [pid 673] set_robust_list(0x7fc84e09f9e0, 24 [pid 672] <... clone resumed>, parent_tid=[673], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 673 [pid 673] <... set_robust_list resumed>) = 0 [pid 672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 673] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 672] <... futex resumed>) = 0 [pid 673] mount(NULL, "./file0", "ramfs", 0, NULL [pid 672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 673] <... mount resumed>) = 0 [pid 673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 672] <... futex resumed>) = 0 [pid 672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 673] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 672] <... futex resumed>) = 0 [pid 672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 673] umount2("./file0", MNT_DETACH [pid 672] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 672] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 672] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[674], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 674 [pid 672] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 672] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 673] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 674 attached [pid 674] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 674] umount2("./file0", MNT_DETACH) = 0 [pid 673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] <... futex resumed>) = 0 [pid 673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] <... futex resumed>) = 1 [pid 674] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 672] <... futex resumed>) = 0 [pid 672] exit_group(0) = ? [pid 673] <... futex resumed>) = ? [pid 674] <... futex resumed>) = 231 [pid 673] +++ exited with 0 +++ [pid 674] +++ exited with 0 +++ [pid 672] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=672, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 675 ./strace-static-x86_64: Process 675 attached [pid 675] set_robust_list(0x5555564465e0, 24) = 0 [pid 675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 675] setpgid(0, 0) = 0 [pid 675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 675] write(3, "1000", 4) = 4 [pid 675] close(3) = 0 [pid 675] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 675] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 675] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[676], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 676 [pid 675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 676 attached [pid 676] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 676] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] <... futex resumed>) = 0 [pid 675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... futex resumed>) = 1 [pid 676] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 675] <... futex resumed>) = 0 [pid 675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 675] <... futex resumed>) = 0 [pid 675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 675] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 675] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 676] umount2("./file0", MNT_DETACH [pid 675] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[677], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 677 [pid 675] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 676] <... umount2 resumed>) = 0 [pid 675] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 677 attached [pid 677] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 677] umount2("./file0", MNT_DETACH [pid 676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... umount2 resumed>) = 0 [pid 677] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] <... futex resumed>) = 0 [pid 675] exit_group(0) = ? [pid 677] <... futex resumed>) = ? [pid 677] +++ exited with 0 +++ [pid 676] <... futex resumed>) = ? [pid 676] +++ exited with 0 +++ [pid 675] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=675, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 678 ./strace-static-x86_64: Process 678 attached [pid 678] set_robust_list(0x5555564465e0, 24) = 0 [pid 678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 678] setpgid(0, 0) = 0 [pid 678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 678] write(3, "1000", 4) = 4 [pid 678] close(3) = 0 [pid 678] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 678] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 678] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 679 attached , parent_tid=[679], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 679 [pid 679] set_robust_list(0x7fc84e09f9e0, 24 [pid 678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] <... set_robust_list resumed>) = 0 [pid 678] <... futex resumed>) = 0 [pid 678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = 1 [pid 678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] mount(NULL, "./file0", "ramfs", 0, NULL [pid 678] <... futex resumed>) = 0 [pid 678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... mount resumed>) = 0 [pid 679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = 1 [pid 678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 678] <... futex resumed>) = 0 [pid 678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... mount resumed>) = 0 [pid 679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = 1 [pid 678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] umount2("./file0", MNT_DETACH [pid 678] <... futex resumed>) = 0 [pid 678] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 678] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 678] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 679] <... umount2 resumed>) = 0 [pid 679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 680 attached ) = 0 [pid 678] <... clone resumed>, parent_tid=[680], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 680 [pid 680] set_robust_list(0x7fc84e07e9e0, 24 [pid 679] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] <... set_robust_list resumed>) = 0 [pid 678] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] umount2("./file0", MNT_DETACH [pid 678] <... futex resumed>) = 0 [pid 678] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 680] <... umount2 resumed>) = 0 [pid 680] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 678] <... futex resumed>) = 0 [pid 680] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 678] exit_group(0) = ? [pid 679] <... futex resumed>) = ? [pid 679] +++ exited with 0 +++ [pid 680] <... futex resumed>) = ? [pid 680] +++ exited with 0 +++ [pid 678] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=678, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 681 attached , child_tidptr=0x5555564465d0) = 681 [pid 681] set_robust_list(0x5555564465e0, 24) = 0 [pid 681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 681] setpgid(0, 0) = 0 [pid 681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 681] write(3, "1000", 4) = 4 [pid 681] close(3) = 0 [pid 681] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 681] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 681] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 682 attached , parent_tid=[682], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 682 [pid 682] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 682] <... futex resumed>) = 0 [pid 682] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 682] <... futex resumed>) = 0 [pid 682] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 682] <... futex resumed>) = 0 [pid 682] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 682] <... mount resumed>) = 0 [pid 682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = 0 [pid 681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 682] <... futex resumed>) = 0 [pid 682] umount2("./file0", MNT_DETACH) = 0 [pid 681] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = 0 [pid 681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 681] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 681] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 683 attached [pid 683] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 683] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... clone resumed>, parent_tid=[683], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 683 [pid 681] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 683] <... futex resumed>) = 0 [pid 683] umount2("./file0", MNT_DETACH) = 0 [pid 681] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] exit_group(0 [pid 682] <... futex resumed>) = ? [pid 681] <... exit_group resumed>) = ? [pid 682] +++ exited with 0 +++ [pid 683] <... futex resumed>) = ? [pid 683] +++ exited with 0 +++ [pid 681] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=681, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 684 ./strace-static-x86_64: Process 684 attached [pid 684] set_robust_list(0x5555564465e0, 24) = 0 [pid 684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 684] setpgid(0, 0) = 0 [pid 684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 684] write(3, "1000", 4) = 4 [pid 684] close(3) = 0 [pid 684] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 684] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 684] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[685], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 685 [pid 684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 685 attached [pid 685] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 685] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = 0 [pid 684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 685] <... futex resumed>) = 1 [pid 685] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = 0 [pid 684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 685] <... futex resumed>) = 1 [pid 685] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 684] <... futex resumed>) = 0 [pid 685] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 684] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] umount2("./file0", MNT_DETACH [pid 684] <... futex resumed>) = 0 [pid 684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 684] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 684] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 686 attached [pid 685] <... umount2 resumed>) = 0 [pid 684] <... clone resumed>, parent_tid=[686], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 686 [pid 686] set_robust_list(0x7fc84e07e9e0, 24 [pid 685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... set_robust_list resumed>) = 0 [pid 685] <... futex resumed>) = 0 [pid 686] umount2("./file0", MNT_DETACH [pid 684] <... futex resumed>) = 0 [pid 685] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 684] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] <... umount2 resumed>) = 0 [pid 686] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 684] <... futex resumed>) = 0 [pid 686] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 684] exit_group(0 [pid 686] <... futex resumed>) = ? [pid 685] <... futex resumed>) = ? [pid 684] <... exit_group resumed>) = ? [pid 685] +++ exited with 0 +++ [pid 686] +++ exited with 0 +++ [pid 684] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=684, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 687 attached , child_tidptr=0x5555564465d0) = 687 [pid 687] set_robust_list(0x5555564465e0, 24) = 0 [pid 687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 687] setpgid(0, 0) = 0 [pid 687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 687] write(3, "1000", 4) = 4 [pid 687] close(3) = 0 [pid 687] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 687] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 687] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 688 attached , parent_tid=[688], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 688 [pid 688] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 688] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 688] <... futex resumed>) = 0 [pid 688] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 688] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 688] <... futex resumed>) = 0 [pid 688] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 688] <... futex resumed>) = 0 [pid 687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 687] <... futex resumed>) = 0 [pid 687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] <... mount resumed>) = 0 [pid 688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 687] <... futex resumed>) = 0 [pid 688] umount2("./file0", MNT_DETACH [pid 687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 687] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 688] <... umount2 resumed>) = 0 [pid 688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 688] <... futex resumed>) = 0 [pid 687] <... mprotect resumed>) = 0 [pid 688] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 689 attached [pid 689] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 689] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] <... clone resumed>, parent_tid=[689], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 689 [pid 687] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 689] <... futex resumed>) = 0 [pid 689] umount2("./file0", MNT_DETACH [pid 687] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 689] <... umount2 resumed>) = 0 [pid 689] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 689] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] exit_group(0 [pid 688] <... futex resumed>) = ? [pid 687] <... exit_group resumed>) = ? [pid 689] <... futex resumed>) = ? [pid 689] +++ exited with 0 +++ [pid 688] +++ exited with 0 +++ [pid 687] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=687, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 690 ./strace-static-x86_64: Process 690 attached [pid 690] set_robust_list(0x5555564465e0, 24) = 0 [pid 690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 690] setpgid(0, 0) = 0 [pid 690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 690] write(3, "1000", 4) = 4 [pid 690] close(3) = 0 [pid 690] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 690] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 690] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[691], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 691 [pid 690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 691 attached [pid 691] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 691] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... futex resumed>) = 0 [pid 690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... futex resumed>) = 1 [pid 691] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... futex resumed>) = 0 [pid 690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... futex resumed>) = 1 [pid 691] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... futex resumed>) = 0 [pid 690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 690] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 690] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[692], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 692 [pid 690] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 690] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... futex resumed>) = 1 [pid 691] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 692 attached [pid 692] set_robust_list(0x7fc84e07e9e0, 24 [pid 691] <... umount2 resumed>) = 0 [pid 692] <... set_robust_list resumed>) = 0 [pid 691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] umount2("./file0", MNT_DETACH [pid 691] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 692] <... umount2 resumed>) = 0 [pid 692] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... futex resumed>) = 0 [pid 692] <... futex resumed>) = 1 [pid 690] exit_group(0 [pid 692] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] <... exit_group resumed>) = ? [pid 691] <... futex resumed>) = ? [pid 691] +++ exited with 0 +++ [pid 692] <... futex resumed>) = ? [pid 692] +++ exited with 0 +++ [pid 690] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 693 ./strace-static-x86_64: Process 693 attached [pid 693] set_robust_list(0x5555564465e0, 24) = 0 [pid 693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 693] setpgid(0, 0) = 0 [pid 693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 693] write(3, "1000", 4) = 4 [pid 693] close(3) = 0 [pid 693] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 693] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 693] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[694], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 694 [pid 693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 694 attached [pid 694] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 694] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = 0 [pid 693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] <... futex resumed>) = 1 [pid 694] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = 0 [pid 693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] <... futex resumed>) = 1 [pid 694] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = 0 [pid 694] <... futex resumed>) = 1 [pid 693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] umount2("./file0", MNT_DETACH [pid 693] <... futex resumed>) = 0 [pid 693] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 694] <... umount2 resumed>) = 0 [pid 693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 694] <... futex resumed>) = 0 [pid 694] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] <... mprotect resumed>) = 0 [pid 693] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 695 attached , parent_tid=[695], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 695 [pid 695] set_robust_list(0x7fc84e07e9e0, 24 [pid 693] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... set_robust_list resumed>) = 0 [pid 693] <... futex resumed>) = 0 [pid 695] umount2("./file0", MNT_DETACH [pid 693] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... umount2 resumed>) = 0 [pid 695] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = 0 [pid 695] <... futex resumed>) = 1 [pid 693] exit_group(0 [pid 695] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 694] <... futex resumed>) = ? [pid 693] <... exit_group resumed>) = ? [pid 694] +++ exited with 0 +++ [pid 695] <... futex resumed>) = ? [pid 695] +++ exited with 0 +++ [pid 693] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=693, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 696 ./strace-static-x86_64: Process 696 attached [pid 696] set_robust_list(0x5555564465e0, 24) = 0 [pid 696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 696] setpgid(0, 0) = 0 [pid 696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 696] write(3, "1000", 4) = 4 [pid 696] close(3) = 0 [pid 696] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 696] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 696] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[697], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 697 ./strace-static-x86_64: Process 697 attached [pid 697] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 697] <... futex resumed>) = 0 [pid 697] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 697] <... futex resumed>) = 0 [pid 697] mount(NULL, "./file0", "ramfs", 0, NULL [pid 696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... mount resumed>) = 0 [pid 697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 697] <... futex resumed>) = 0 [pid 697] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... mount resumed>) = 0 [pid 697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 697] <... futex resumed>) = 0 [pid 697] umount2("./file0", MNT_DETACH [pid 696] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 697] <... umount2 resumed>) = 0 [pid 697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] <... mmap resumed>) = 0x7fc84e05e000 [pid 696] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 696] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 698 attached , parent_tid=[698], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 698 [pid 696] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] set_robust_list(0x7fc84e07e9e0, 24 [pid 696] <... futex resumed>) = 0 [pid 698] <... set_robust_list resumed>) = 0 [pid 698] umount2("./file0", MNT_DETACH [pid 696] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 698] <... umount2 resumed>) = 0 [pid 698] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 698] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] exit_group(0) = ? [pid 697] <... futex resumed>) = ? [pid 697] +++ exited with 0 +++ [pid 698] <... futex resumed>) = ? [pid 698] +++ exited with 0 +++ [pid 696] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 699 ./strace-static-x86_64: Process 699 attached [pid 699] set_robust_list(0x5555564465e0, 24) = 0 [pid 699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 699] setpgid(0, 0) = 0 [pid 699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 699] write(3, "1000", 4) = 4 [pid 699] close(3) = 0 [pid 699] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 699] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 699] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 699] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 700 attached , parent_tid=[700], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 700 [pid 700] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 700] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 700] <... futex resumed>) = 0 [pid 699] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 700] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 700] <... futex resumed>) = 0 [pid 699] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 700] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 699] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 700] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 699] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 699] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 699] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 699] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[701], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 701 [pid 699] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 699] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 701 attached [pid 701] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 701] umount2("./file0", MNT_DETACH [pid 700] umount2("./file0", MNT_DETACH [pid 701] <... umount2 resumed>) = 0 [pid 701] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 699] <... futex resumed>) = 0 [pid 700] <... umount2 resumed>) = 0 [pid 701] <... futex resumed>) = 1 [pid 701] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] exit_group(0) = ? [pid 701] <... futex resumed>) = ? [pid 700] <... futex resumed>) = ? [pid 701] +++ exited with 0 +++ [pid 700] +++ exited with 0 +++ [pid 699] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=699, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 702 attached , child_tidptr=0x5555564465d0) = 702 [pid 702] set_robust_list(0x5555564465e0, 24) = 0 [pid 702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 702] setpgid(0, 0) = 0 [pid 702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 702] write(3, "1000", 4) = 4 [pid 702] close(3) = 0 [pid 702] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 702] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 702] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 703 attached [pid 703] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 703] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] <... clone resumed>, parent_tid=[703], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 703 [pid 702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] <... futex resumed>) = 0 [pid 703] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 703] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] <... futex resumed>) = 0 [pid 702] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] <... futex resumed>) = 0 [pid 703] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 702] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... mount resumed>) = 0 [pid 703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 703] <... futex resumed>) = 0 [pid 703] umount2("./file0", MNT_DETACH [pid 702] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 702] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 703] <... umount2 resumed>) = 0 [pid 702] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 703] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 704 attached [pid 704] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 704] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] <... clone resumed>, parent_tid=[704], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 704 [pid 702] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 704] <... futex resumed>) = 0 [pid 702] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 704] umount2("./file0", MNT_DETACH) = 0 [pid 704] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 702] <... futex resumed>) = 0 [pid 704] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] exit_group(0) = ? [pid 703] <... futex resumed>) = ? [pid 704] <... futex resumed>) = ? [pid 703] +++ exited with 0 +++ [pid 704] +++ exited with 0 +++ [pid 702] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=702, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 705 ./strace-static-x86_64: Process 705 attached [pid 705] set_robust_list(0x5555564465e0, 24) = 0 [pid 705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 705] setpgid(0, 0) = 0 [pid 705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 705] write(3, "1000", 4) = 4 [pid 705] close(3) = 0 [pid 705] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 705] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 705] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[706], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 706 [pid 705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 706 attached [pid 706] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 706] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... futex resumed>) = 0 [pid 705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 706] <... futex resumed>) = 1 [pid 706] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... futex resumed>) = 0 [pid 705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 706] <... futex resumed>) = 1 [pid 706] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... futex resumed>) = 0 [pid 706] <... futex resumed>) = 1 [pid 705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] umount2("./file0", MNT_DETACH [pid 705] <... futex resumed>) = 0 [pid 705] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 706] <... umount2 resumed>) = 0 [pid 705] <... mmap resumed>) = 0x7fc84e05e000 [pid 706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 706] <... futex resumed>) = 0 [pid 706] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 705] <... mprotect resumed>) = 0 [pid 705] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 707 attached , parent_tid=[707], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 707 [pid 707] set_robust_list(0x7fc84e07e9e0, 24 [pid 705] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] <... set_robust_list resumed>) = 0 [pid 705] <... futex resumed>) = 0 [pid 707] umount2("./file0", MNT_DETACH [pid 705] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] <... umount2 resumed>) = 0 [pid 707] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... futex resumed>) = 0 [pid 707] <... futex resumed>) = 1 [pid 705] exit_group(0 [pid 707] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 705] <... exit_group resumed>) = ? [pid 706] <... futex resumed>) = ? [pid 707] <... futex resumed>) = ? [pid 706] +++ exited with 0 +++ [pid 707] +++ exited with 0 +++ [pid 705] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=705, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 708 ./strace-static-x86_64: Process 708 attached [pid 708] set_robust_list(0x5555564465e0, 24) = 0 [pid 708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 708] setpgid(0, 0) = 0 [pid 708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 708] write(3, "1000", 4) = 4 [pid 708] close(3) = 0 [pid 708] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 708] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 708] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 709 attached [pid 709] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 709] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 708] <... clone resumed>, parent_tid=[709], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 709 [pid 708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 709] <... futex resumed>) = 0 [pid 709] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 709] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 708] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 709] <... futex resumed>) = 0 [pid 709] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 709] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 708] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 709] <... futex resumed>) = 0 [pid 709] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 708] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... mount resumed>) = 0 [pid 709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 708] <... futex resumed>) = 0 [pid 709] umount2("./file0", MNT_DETACH [pid 708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 708] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 709] <... umount2 resumed>) = 0 [pid 708] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 709] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 710 attached [pid 708] <... clone resumed>, parent_tid=[710], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 710 [pid 710] set_robust_list(0x7fc84e07e9e0, 24 [pid 708] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] <... set_robust_list resumed>) = 0 [pid 708] <... futex resumed>) = 0 [pid 710] umount2("./file0", MNT_DETACH [pid 708] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 710] <... umount2 resumed>) = 0 [pid 710] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 708] <... futex resumed>) = 0 [pid 710] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 708] exit_group(0) = ? [pid 709] <... futex resumed>) = ? [pid 709] +++ exited with 0 +++ [pid 710] <... futex resumed>) = ? [pid 710] +++ exited with 0 +++ [pid 708] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=708, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 711 attached , child_tidptr=0x5555564465d0) = 711 [pid 711] set_robust_list(0x5555564465e0, 24) = 0 [pid 711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 711] setpgid(0, 0) = 0 [pid 711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 711] write(3, "1000", 4) = 4 [pid 711] close(3) = 0 [pid 711] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 711] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 711] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 712 attached , parent_tid=[712], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 712 [pid 712] set_robust_list(0x7fc84e09f9e0, 24 [pid 711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] <... set_robust_list resumed>) = 0 [pid 711] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 712] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 712] mount(NULL, "./file0", "ramfs", 0, NULL [pid 711] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... mount resumed>) = 0 [pid 712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 712] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... mount resumed>) = 0 [pid 712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 712] umount2("./file0", MNT_DETACH [pid 711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 711] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 711] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 713 attached [pid 713] set_robust_list(0x7fc84e07e9e0, 24 [pid 711] <... clone resumed>, parent_tid=[713], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 713 [pid 713] <... set_robust_list resumed>) = 0 [pid 711] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] umount2("./file0", MNT_DETACH [pid 711] <... futex resumed>) = 0 [pid 711] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 713] <... umount2 resumed>) = 0 [pid 713] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 712] <... umount2 resumed>) = 0 [pid 712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] exit_group(0) = ? [pid 712] <... futex resumed>) = 230 [pid 713] <... futex resumed>) = ? [pid 713] +++ exited with 0 +++ [pid 712] +++ exited with 0 +++ [pid 711] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=711, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 714 ./strace-static-x86_64: Process 714 attached [pid 714] set_robust_list(0x5555564465e0, 24) = 0 [pid 714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 714] setpgid(0, 0) = 0 [pid 714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 714] write(3, "1000", 4) = 4 [pid 714] close(3) = 0 [pid 714] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 714] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 714] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 715 attached [pid 715] set_robust_list(0x7fc84e09f9e0, 24 [pid 714] <... clone resumed>, parent_tid=[715], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 715 [pid 715] <... set_robust_list resumed>) = 0 [pid 715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 715] <... futex resumed>) = 0 [pid 715] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 715] <... futex resumed>) = 0 [pid 715] mount(NULL, "./file0", "ramfs", 0, NULL [pid 714] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] <... mount resumed>) = 0 [pid 715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 715] <... futex resumed>) = 0 [pid 714] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 715] umount2("./file0", MNT_DETACH [pid 714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 714] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 714] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 715] <... umount2 resumed>) = 0 [pid 715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 714] <... clone resumed>, parent_tid=[716], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 716 [pid 715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 716 attached ) = 0 [pid 716] set_robust_list(0x7fc84e07e9e0, 24 [pid 714] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 716] <... set_robust_list resumed>) = 0 [pid 716] umount2("./file0", MNT_DETACH) = 0 [pid 716] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 714] <... futex resumed>) = 0 [pid 716] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] exit_group(0) = ? [pid 715] <... futex resumed>) = ? [pid 715] +++ exited with 0 +++ [pid 716] <... futex resumed>) = ? [pid 716] +++ exited with 0 +++ [pid 714] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=714, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 717 ./strace-static-x86_64: Process 717 attached [pid 717] set_robust_list(0x5555564465e0, 24) = 0 [pid 717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 717] setpgid(0, 0) = 0 [pid 717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 717] write(3, "1000", 4) = 4 [pid 717] close(3) = 0 [pid 717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 717] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 717] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[718], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 718 ./strace-static-x86_64: Process 718 attached [pid 718] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 718] <... futex resumed>) = 0 [pid 717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 718] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 717] <... futex resumed>) = 0 [pid 717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 718] <... futex resumed>) = 0 [pid 718] mount(NULL, "./file0", "ramfs", 0, NULL [pid 717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 718] <... mount resumed>) = 0 [pid 718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 717] <... futex resumed>) = 0 [pid 717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 718] <... futex resumed>) = 0 [pid 718] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 718] <... mount resumed>) = 0 [pid 718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 717] <... futex resumed>) = 0 [pid 718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 718] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 717] <... futex resumed>) = 0 [pid 718] umount2("./file0", MNT_DETACH [pid 717] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 717] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 717] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 718] <... umount2 resumed>) = 0 [pid 718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 717] <... clone resumed>, parent_tid=[719], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 719 [pid 718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 717] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 719 attached ) = 0 [pid 719] set_robust_list(0x7fc84e07e9e0, 24 [pid 717] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] <... set_robust_list resumed>) = 0 [pid 719] umount2("./file0", MNT_DETACH) = 0 [pid 719] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 717] <... futex resumed>) = 0 [pid 717] exit_group(0) = ? [pid 718] <... futex resumed>) = ? [pid 718] +++ exited with 0 +++ [pid 719] +++ exited with 0 +++ [pid 717] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=717, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 720 ./strace-static-x86_64: Process 720 attached [pid 720] set_robust_list(0x5555564465e0, 24) = 0 [pid 720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 720] setpgid(0, 0) = 0 [pid 720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 720] write(3, "1000", 4) = 4 [pid 720] close(3) = 0 [pid 720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 720] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 720] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 721 attached , parent_tid=[721], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 721 [pid 721] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 721] <... futex resumed>) = 0 [pid 720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 721] <... futex resumed>) = 0 [pid 721] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 721] <... futex resumed>) = 0 [pid 721] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] <... mount resumed>) = 0 [pid 721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 720] <... futex resumed>) = 0 [pid 720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 720] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 721] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 721] umount2("./file0", MNT_DETACH [pid 720] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[722], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 722 [pid 720] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] <... umount2 resumed>) = 0 [pid 721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 722 attached [pid 722] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 722] umount2("./file0", MNT_DETACH [pid 721] <... futex resumed>) = 0 [pid 722] <... umount2 resumed>) = 0 [pid 721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 722] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 0 [pid 720] exit_group(0) = ? [pid 721] <... futex resumed>) = ? [pid 722] <... futex resumed>) = ? [pid 721] +++ exited with 0 +++ [pid 722] +++ exited with 0 +++ [pid 720] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=720, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 723 ./strace-static-x86_64: Process 723 attached [pid 723] set_robust_list(0x5555564465e0, 24) = 0 [pid 723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 723] setpgid(0, 0) = 0 [pid 723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 723] write(3, "1000", 4) = 4 [pid 723] close(3) = 0 [pid 723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 723] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 723] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[724], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 724 [pid 723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 724 attached [pid 724] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 724] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 724] <... futex resumed>) = 1 [pid 724] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 724] <... futex resumed>) = 1 [pid 724] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] <... futex resumed>) = 0 [pid 723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 723] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 723] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 725 attached , parent_tid=[725], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 725 [pid 723] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 723] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 724] <... futex resumed>) = 1 [pid 724] umount2("./file0", MNT_DETACH [pid 725] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 725] umount2("./file0", MNT_DETACH [pid 724] <... umount2 resumed>) = 0 [pid 724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 724] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 725] <... umount2 resumed>) = 0 [pid 725] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 723] <... futex resumed>) = 0 [pid 723] exit_group(0) = ? [pid 724] <... futex resumed>) = ? [pid 724] +++ exited with 0 +++ [pid 725] +++ exited with 0 +++ [pid 723] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=723, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 726 ./strace-static-x86_64: Process 726 attached [pid 726] set_robust_list(0x5555564465e0, 24) = 0 [pid 726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 726] setpgid(0, 0) = 0 [pid 726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 726] write(3, "1000", 4) = 4 [pid 726] close(3) = 0 [pid 726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 726] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 726] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[727], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 727 ./strace-static-x86_64: Process 727 attached [pid 727] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 727] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] <... futex resumed>) = 0 [pid 727] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 727] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] <... futex resumed>) = 0 [pid 726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 726] <... futex resumed>) = 0 [pid 727] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 727] <... mount resumed>) = 0 [pid 727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 727] umount2("./file0", MNT_DETACH [pid 726] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 727] <... umount2 resumed>) = 0 [pid 726] <... mmap resumed>) = 0x7fc84e05e000 [pid 726] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... mprotect resumed>) = 0 [pid 726] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 727] <... futex resumed>) = 0 ./strace-static-x86_64: Process 728 attached [pid 727] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 726] <... clone resumed>, parent_tid=[728], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 728 [pid 728] set_robust_list(0x7fc84e07e9e0, 24 [pid 726] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... set_robust_list resumed>) = 0 [pid 726] <... futex resumed>) = 0 [pid 728] umount2("./file0", MNT_DETACH [pid 726] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 728] <... umount2 resumed>) = 0 [pid 728] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 726] <... futex resumed>) = 0 [pid 728] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 726] exit_group(0) = ? [pid 727] <... futex resumed>) = 231 [pid 728] <... futex resumed>) = ? [pid 727] +++ exited with 0 +++ [pid 728] +++ exited with 0 +++ [pid 726] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=726, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 729 attached , child_tidptr=0x5555564465d0) = 729 [pid 729] set_robust_list(0x5555564465e0, 24) = 0 [pid 729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 729] setpgid(0, 0) = 0 [pid 729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 729] write(3, "1000", 4) = 4 [pid 729] close(3) = 0 [pid 729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 729] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 729] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 730 attached , parent_tid=[730], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 730 [pid 730] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] mkdir("./file0", 000 [pid 729] <... futex resumed>) = 0 [pid 730] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 729] <... futex resumed>) = 0 [pid 730] mount(NULL, "./file0", "ramfs", 0, NULL [pid 729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... mount resumed>) = 0 [pid 730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 730] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... futex resumed>) = 0 [pid 729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 730] <... futex resumed>) = 0 [pid 730] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... mount resumed>) = 0 [pid 730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 730] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 730] <... futex resumed>) = 0 [pid 730] umount2("./file0", MNT_DETACH [pid 729] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... umount2 resumed>) = 0 [pid 730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 730] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... futex resumed>) = 0 [pid 729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 729] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 729] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 731 attached , parent_tid=[731], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 731 [pid 731] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 731] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 731] <... futex resumed>) = 0 [pid 731] umount2("./file0", MNT_DETACH [pid 729] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] <... umount2 resumed>) = 0 [pid 731] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 731] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 729] exit_group(0 [pid 730] <... futex resumed>) = ? [pid 729] <... exit_group resumed>) = ? [pid 730] +++ exited with 0 +++ [pid 731] <... futex resumed>) = ? [pid 731] +++ exited with 0 +++ [pid 729] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=729, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 732 ./strace-static-x86_64: Process 732 attached [pid 732] set_robust_list(0x5555564465e0, 24) = 0 [pid 732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 732] setpgid(0, 0) = 0 [pid 732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 732] write(3, "1000", 4) = 4 [pid 732] close(3) = 0 [pid 732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 732] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 732] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[733], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 733 [pid 732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 733 attached [pid 733] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 733] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 733] <... futex resumed>) = 1 [pid 733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 733] <... futex resumed>) = 0 [pid 733] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] <... futex resumed>) = 0 [pid 732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 733] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 733] <... mount resumed>) = 0 [pid 733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] <... futex resumed>) = 0 [pid 733] umount2("./file0", MNT_DETACH [pid 732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 733] <... umount2 resumed>) = 0 [pid 732] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 733] <... futex resumed>) = 0 [pid 732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 732] <... mmap resumed>) = 0x7fc84e05e000 [pid 732] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 732] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 734 attached [pid 734] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 734] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 732] <... clone resumed>, parent_tid=[734], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 734 [pid 732] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 734] <... futex resumed>) = 0 [pid 732] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] umount2("./file0", MNT_DETACH) = 0 [pid 734] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] <... futex resumed>) = 0 [pid 734] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 732] exit_group(0) = ? [pid 733] <... futex resumed>) = ? [pid 734] <... futex resumed>) = ? [pid 734] +++ exited with 0 +++ [pid 733] +++ exited with 0 +++ [pid 732] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=732, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 735 ./strace-static-x86_64: Process 735 attached [pid 735] set_robust_list(0x5555564465e0, 24) = 0 [pid 735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 735] setpgid(0, 0) = 0 [pid 735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 735] write(3, "1000", 4) = 4 [pid 735] close(3) = 0 [pid 735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 735] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 735] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 736 attached , parent_tid=[736], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 736 [pid 736] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 736] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 736] <... futex resumed>) = 0 [pid 736] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 736] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 736] <... futex resumed>) = 0 [pid 736] mount(NULL, "./file0", "ramfs", 0, NULL [pid 735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... mount resumed>) = 0 [pid 736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 735] <... futex resumed>) = 0 [pid 735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 735] <... futex resumed>) = 0 [pid 735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 736] umount2("./file0", MNT_DETACH [pid 735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 735] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 736] <... umount2 resumed>) = 0 [pid 735] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... clone resumed>, parent_tid=[737], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 737 [pid 736] <... futex resumed>) = 0 [pid 735] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 735] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 737 attached [pid 737] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 737] umount2("./file0", MNT_DETACH [pid 736] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] <... umount2 resumed>) = 0 [pid 737] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = 0 [pid 735] exit_group(0) = ? [pid 736] <... futex resumed>) = ? [pid 737] <... futex resumed>) = ? [pid 736] +++ exited with 0 +++ [pid 737] +++ exited with 0 +++ [pid 735] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=735, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 738 ./strace-static-x86_64: Process 738 attached [pid 738] set_robust_list(0x5555564465e0, 24) = 0 [pid 738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 738] setpgid(0, 0) = 0 [pid 738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 738] write(3, "1000", 4) = 4 [pid 738] close(3) = 0 [pid 738] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 738] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 738] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[739], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 739 [pid 738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 739 attached [pid 739] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 739] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = 0 [pid 738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] <... futex resumed>) = 1 [pid 739] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = 0 [pid 739] <... futex resumed>) = 1 [pid 738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 738] <... futex resumed>) = 0 [pid 738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] <... mount resumed>) = 0 [pid 739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = 0 [pid 739] <... futex resumed>) = 1 [pid 738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] umount2("./file0", MNT_DETACH [pid 738] <... futex resumed>) = 0 [pid 738] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 738] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 739] <... umount2 resumed>) = 0 [pid 738] <... mprotect resumed>) = 0 [pid 739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 739] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 740 attached [pid 738] <... clone resumed>, parent_tid=[740], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 740 [pid 740] set_robust_list(0x7fc84e07e9e0, 24 [pid 738] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... set_robust_list resumed>) = 0 [pid 738] <... futex resumed>) = 0 [pid 740] umount2("./file0", MNT_DETACH [pid 738] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 740] <... umount2 resumed>) = 0 [pid 740] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = 1 [pid 738] exit_group(0 [pid 740] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 738] <... exit_group resumed>) = ? [pid 739] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 740] <... futex resumed>) = ? [pid 739] +++ exited with 0 +++ [pid 740] +++ exited with 0 +++ [pid 738] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=738, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 741 ./strace-static-x86_64: Process 741 attached [pid 741] set_robust_list(0x5555564465e0, 24) = 0 [pid 741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 741] setpgid(0, 0) = 0 [pid 741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 741] write(3, "1000", 4) = 4 [pid 741] close(3) = 0 [pid 741] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 741] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 741] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 742 attached [pid 742] set_robust_list(0x7fc84e09f9e0, 24 [pid 741] <... clone resumed>, parent_tid=[742], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 742 [pid 742] <... set_robust_list resumed>) = 0 [pid 741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 741] <... futex resumed>) = 0 [pid 742] mount(NULL, "./file0", "ramfs", 0, NULL [pid 741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... mount resumed>) = 0 [pid 742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 741] <... futex resumed>) = 0 [pid 742] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... mount resumed>) = 0 [pid 742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 741] <... futex resumed>) = 0 [pid 742] umount2("./file0", MNT_DETACH [pid 741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 742] <... umount2 resumed>) = 0 [pid 742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 742] <... futex resumed>) = 0 [pid 741] <... mprotect resumed>) = 0 [pid 741] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 743 attached [pid 741] <... clone resumed>, parent_tid=[743], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 743 [pid 743] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 743] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 743] <... futex resumed>) = 0 [pid 741] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 743] umount2("./file0", MNT_DETACH) = 0 [pid 743] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 741] <... futex resumed>) = 0 [pid 743] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] exit_group(0) = ? [pid 743] <... futex resumed>) = ? [pid 743] +++ exited with 0 +++ [pid 742] <... futex resumed>) = ? [pid 742] +++ exited with 0 +++ [pid 741] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=741, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 744 ./strace-static-x86_64: Process 744 attached [pid 744] set_robust_list(0x5555564465e0, 24) = 0 [pid 744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 744] setpgid(0, 0) = 0 [pid 744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 744] write(3, "1000", 4) = 4 [pid 744] close(3) = 0 [pid 744] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 744] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 744] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[745], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 745 [pid 744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 745 attached [pid 745] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 745] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = 0 [pid 744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] <... futex resumed>) = 1 [pid 745] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 744] <... futex resumed>) = 0 [pid 744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 744] <... futex resumed>) = 0 [pid 744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 744] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 744] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 746 attached , parent_tid=[746], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 746 [pid 746] set_robust_list(0x7fc84e07e9e0, 24 [pid 744] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... set_robust_list resumed>) = 0 [pid 744] <... futex resumed>) = 0 [pid 746] umount2("./file0", MNT_DETACH [pid 744] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] umount2("./file0", MNT_DETACH [pid 746] <... umount2 resumed>) = 0 [pid 746] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... umount2 resumed>) = 0 [pid 746] <... futex resumed>) = 1 [pid 744] <... futex resumed>) = 0 [pid 746] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 745] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] exit_group(0) = ? [pid 746] <... futex resumed>) = ? [pid 745] <... futex resumed>) = ? [pid 745] +++ exited with 0 +++ [pid 746] +++ exited with 0 +++ [pid 744] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=744, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 747 ./strace-static-x86_64: Process 747 attached [pid 747] set_robust_list(0x5555564465e0, 24) = 0 [pid 747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 747] setpgid(0, 0) = 0 [pid 747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 747] write(3, "1000", 4) = 4 [pid 747] close(3) = 0 [pid 747] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 747] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 747] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 748 attached , parent_tid=[748], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 748 [pid 748] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 748] <... futex resumed>) = 0 [pid 747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 748] <... futex resumed>) = 0 [pid 747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 747] <... futex resumed>) = 0 [pid 747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 747] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 747] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 748] umount2("./file0", MNT_DETACH [pid 747] <... clone resumed>, parent_tid=[750], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 750 [pid 747] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 748] <... umount2 resumed>) = 0 [pid 747] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 750 attached [pid 750] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 750] umount2("./file0", MNT_DETACH) = 0 [pid 748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 0 [pid 747] exit_group(0) = ? [pid 750] <... futex resumed>) = ? [pid 750] +++ exited with 0 +++ [pid 748] <... futex resumed>) = ? [pid 748] +++ exited with 0 +++ [pid 747] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=747, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 751 attached , child_tidptr=0x5555564465d0) = 751 [pid 751] set_robust_list(0x5555564465e0, 24) = 0 [pid 751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 751] setpgid(0, 0) = 0 [pid 751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 751] write(3, "1000", 4) = 4 [pid 751] close(3) = 0 [pid 751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 751] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 751] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 752 attached , parent_tid=[752], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 752 [pid 752] set_robust_list(0x7fc84e09f9e0, 24 [pid 751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... set_robust_list resumed>) = 0 [pid 752] mkdir("./file0", 000 [pid 751] <... futex resumed>) = 0 [pid 752] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 752] <... futex resumed>) = 0 [pid 752] mount(NULL, "./file0", "ramfs", 0, NULL [pid 751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] <... mount resumed>) = 0 [pid 752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 752] <... futex resumed>) = 0 [pid 752] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] <... mount resumed>) = 0 [pid 752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 752] <... futex resumed>) = 0 [pid 752] umount2("./file0", MNT_DETACH [pid 751] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... umount2 resumed>) = 0 [pid 752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] <... futex resumed>) = 0 [pid 751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 751] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 751] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 753 attached [pid 753] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 753] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] <... clone resumed>, parent_tid=[753], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 753 [pid 751] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 753] <... futex resumed>) = 0 [pid 753] umount2("./file0", MNT_DETACH) = 0 [pid 753] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 753] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] exit_group(0 [pid 752] <... futex resumed>) = ? [pid 751] <... exit_group resumed>) = ? [pid 752] +++ exited with 0 +++ [pid 753] <... futex resumed>) = ? [pid 753] +++ exited with 0 +++ [pid 751] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=751, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 754 ./strace-static-x86_64: Process 754 attached [pid 754] set_robust_list(0x5555564465e0, 24) = 0 [pid 754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 754] setpgid(0, 0) = 0 [pid 754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 754] write(3, "1000", 4) = 4 [pid 754] close(3) = 0 [pid 754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 754] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 754] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 755 attached , parent_tid=[755], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 755 [pid 755] set_robust_list(0x7fc84e09f9e0, 24 [pid 754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] <... set_robust_list resumed>) = 0 [pid 754] <... futex resumed>) = 0 [pid 754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] <... futex resumed>) = 0 [pid 755] <... futex resumed>) = 1 [pid 754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] <... futex resumed>) = 0 [pid 755] <... futex resumed>) = 1 [pid 754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 754] <... futex resumed>) = 0 [pid 754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 755] <... mount resumed>) = 0 [pid 755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 754] <... futex resumed>) = 0 [pid 754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] umount2("./file0", MNT_DETACH [pid 754] <... futex resumed>) = 0 [pid 754] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 754] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 755] <... umount2 resumed>) = 0 [pid 754] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 756 attached ) = 0 [pid 756] set_robust_list(0x7fc84e07e9e0, 24 [pid 755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 754] <... clone resumed>, parent_tid=[756], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 756 [pid 756] <... set_robust_list resumed>) = 0 [pid 754] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] umount2("./file0", MNT_DETACH [pid 754] <... futex resumed>) = 0 [pid 754] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 756] <... umount2 resumed>) = 0 [pid 756] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] <... futex resumed>) = 0 [pid 756] <... futex resumed>) = 1 [pid 754] exit_group(0) = ? [pid 755] <... futex resumed>) = ? [pid 755] +++ exited with 0 +++ [pid 756] +++ exited with 0 +++ [pid 754] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=754, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 757 attached , child_tidptr=0x5555564465d0) = 757 [pid 757] set_robust_list(0x5555564465e0, 24) = 0 [pid 757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 757] setpgid(0, 0) = 0 [pid 757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 757] write(3, "1000", 4) = 4 [pid 757] close(3) = 0 [pid 757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 757] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 757] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 757] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 758 attached [pid 758] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... clone resumed>, parent_tid=[758], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 758 [pid 757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 758] <... futex resumed>) = 0 [pid 758] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 758] <... futex resumed>) = 0 [pid 758] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 758] <... futex resumed>) = 0 [pid 758] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 758] <... mount resumed>) = 0 [pid 758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... futex resumed>) = 0 [pid 757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 758] <... futex resumed>) = 0 [pid 758] umount2("./file0", MNT_DETACH) = 0 [pid 757] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... futex resumed>) = 0 [pid 757] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 757] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 757] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 759 attached , parent_tid=[759], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 759 [pid 759] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 759] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 759] <... futex resumed>) = 0 [pid 759] umount2("./file0", MNT_DETACH [pid 757] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... umount2 resumed>) = 0 [pid 759] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 759] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] exit_group(0 [pid 758] <... futex resumed>) = ? [pid 757] <... exit_group resumed>) = ? [pid 758] +++ exited with 0 +++ [pid 759] <... futex resumed>) = ? [pid 759] +++ exited with 0 +++ [pid 757] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=757, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 760 ./strace-static-x86_64: Process 760 attached [pid 760] set_robust_list(0x5555564465e0, 24) = 0 [pid 760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 760] setpgid(0, 0) = 0 [pid 760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 760] write(3, "1000", 4) = 4 [pid 760] close(3) = 0 [pid 760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 760] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 760] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 761 attached , parent_tid=[761], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 761 [pid 761] set_robust_list(0x7fc84e09f9e0, 24 [pid 760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 761] <... set_robust_list resumed>) = 0 [pid 760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = 0 [pid 761] <... futex resumed>) = 1 [pid 760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] mount(NULL, "./file0", "ramfs", 0, NULL [pid 760] <... futex resumed>) = 0 [pid 760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... mount resumed>) = 0 [pid 761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 760] <... futex resumed>) = 0 [pid 761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 760] <... futex resumed>) = 0 [pid 761] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... mount resumed>) = 0 [pid 761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = 0 [pid 761] <... futex resumed>) = 1 [pid 760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] umount2("./file0", MNT_DETACH [pid 760] <... futex resumed>) = 0 [pid 760] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 760] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 761] <... umount2 resumed>) = 0 [pid 760] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 762 attached ) = 0 [pid 760] <... clone resumed>, parent_tid=[762], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 762 [pid 762] set_robust_list(0x7fc84e07e9e0, 24 [pid 761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] <... set_robust_list resumed>) = 0 [pid 760] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] umount2("./file0", MNT_DETACH [pid 760] <... futex resumed>) = 0 [pid 760] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 762] <... umount2 resumed>) = 0 [pid 762] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 760] <... futex resumed>) = 0 [pid 762] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 760] exit_group(0 [pid 762] <... futex resumed>) = ? [pid 761] <... futex resumed>) = ? [pid 760] <... exit_group resumed>) = ? [pid 761] +++ exited with 0 +++ [pid 762] +++ exited with 0 +++ [pid 760] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=760, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 763 ./strace-static-x86_64: Process 763 attached [pid 763] set_robust_list(0x5555564465e0, 24) = 0 [pid 763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 763] setpgid(0, 0) = 0 [pid 763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 763] write(3, "1000", 4) = 4 [pid 763] close(3) = 0 [pid 763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 763] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 763] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 763] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 764 attached , parent_tid=[764], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 764 [pid 764] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 764] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 764] <... futex resumed>) = 0 [pid 764] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 764] <... futex resumed>) = 0 [pid 763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] mount(NULL, "./file0", "ramfs", 0, NULL [pid 763] <... futex resumed>) = 0 [pid 764] <... mount resumed>) = 0 [pid 763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 764] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 763] <... futex resumed>) = 0 [pid 763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] <... mount resumed>) = 0 [pid 764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 763] <... futex resumed>) = 0 [pid 764] umount2("./file0", MNT_DETACH [pid 763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 763] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... umount2 resumed>) = 0 [pid 763] <... futex resumed>) = 0 [pid 764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 764] <... futex resumed>) = 0 [pid 763] <... mmap resumed>) = 0x7fc84e05e000 [pid 764] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 763] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 763] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 765 attached [pid 765] set_robust_list(0x7fc84e07e9e0, 24 [pid 763] <... clone resumed>, parent_tid=[765], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 765 [pid 765] <... set_robust_list resumed>) = 0 [pid 763] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] umount2("./file0", MNT_DETACH [pid 763] <... futex resumed>) = 0 [pid 763] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 765] <... umount2 resumed>) = 0 [pid 765] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 763] <... futex resumed>) = 0 [pid 765] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 763] exit_group(0) = ? [pid 764] <... futex resumed>) = ? [pid 764] +++ exited with 0 +++ [pid 765] <... futex resumed>) = ? [pid 765] +++ exited with 0 +++ [pid 763] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=763, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 766 ./strace-static-x86_64: Process 766 attached [pid 766] set_robust_list(0x5555564465e0, 24) = 0 [pid 766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 766] setpgid(0, 0) = 0 [pid 766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 766] write(3, "1000", 4) = 4 [pid 766] close(3) = 0 [pid 766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 766] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 766] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[767], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 767 [pid 766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 767 attached [pid 767] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 767] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] <... futex resumed>) = 0 [pid 766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 767] <... futex resumed>) = 0 [pid 767] mount(NULL, "./file0", "ramfs", 0, NULL [pid 766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] <... mount resumed>) = 0 [pid 767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 767] <... futex resumed>) = 0 [pid 767] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] <... mount resumed>) = 0 [pid 767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 766] <... futex resumed>) = 0 [pid 766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 766] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 766] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 767] umount2("./file0", MNT_DETACH [pid 766] <... mprotect resumed>) = 0 [pid 766] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[768], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 768 [pid 766] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 766] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 768 attached [pid 767] <... umount2 resumed>) = 0 [pid 768] set_robust_list(0x7fc84e07e9e0, 24 [pid 767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 768] <... set_robust_list resumed>) = 0 [pid 768] umount2("./file0", MNT_DETACH [pid 767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] <... umount2 resumed>) = 0 [pid 768] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 766] <... futex resumed>) = 0 [pid 766] exit_group(0 [pid 767] <... futex resumed>) = ? [pid 767] +++ exited with 0 +++ [pid 766] <... exit_group resumed>) = ? [pid 768] +++ exited with 0 +++ [pid 766] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=766, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 769 ./strace-static-x86_64: Process 769 attached [pid 769] set_robust_list(0x5555564465e0, 24) = 0 [pid 769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 769] setpgid(0, 0) = 0 [pid 769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 769] write(3, "1000", 4) = 4 [pid 769] close(3) = 0 [pid 769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 769] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 769] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 769] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 770 attached , parent_tid=[770], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 770 [pid 770] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 770] <... futex resumed>) = 0 [pid 770] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 0 [pid 770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 770] <... futex resumed>) = 0 [pid 770] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 0 [pid 770] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] <... futex resumed>) = 0 [pid 769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 770] <... futex resumed>) = 0 [pid 769] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] umount2("./file0", MNT_DETACH [pid 769] <... futex resumed>) = 0 [pid 770] <... umount2 resumed>) = 0 [pid 769] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] <... mmap resumed>) = 0x7fc84e05e000 [pid 769] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 769] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 771 attached , parent_tid=[771], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 771 [pid 771] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 771] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 771] <... futex resumed>) = 0 [pid 771] umount2("./file0", MNT_DETACH) = 0 [pid 771] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 771] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 769] exit_group(0 [pid 770] <... futex resumed>) = ? [pid 769] <... exit_group resumed>) = ? [pid 770] +++ exited with 0 +++ [pid 771] <... futex resumed>) = ? [pid 771] +++ exited with 0 +++ [pid 769] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=769, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 772 ./strace-static-x86_64: Process 772 attached [pid 772] set_robust_list(0x5555564465e0, 24) = 0 [pid 772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 772] setpgid(0, 0) = 0 [pid 772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 772] write(3, "1000", 4) = 4 [pid 772] close(3) = 0 [pid 772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 772] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 772] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 773 attached , parent_tid=[773], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 773 [pid 773] set_robust_list(0x7fc84e09f9e0, 24 [pid 772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] <... set_robust_list resumed>) = 0 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 772] <... futex resumed>) = 0 [pid 773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 772] <... futex resumed>) = 0 [pid 773] mount(NULL, "./file0", "ramfs", 0, NULL [pid 772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... mount resumed>) = 0 [pid 773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 773] <... futex resumed>) = 1 [pid 772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... mount resumed>) = 0 [pid 773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] umount2("./file0", MNT_DETACH [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 772] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 773] <... umount2 resumed>) = 0 [pid 773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 773] <... futex resumed>) = 0 [pid 773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 774 attached [pid 772] <... clone resumed>, parent_tid=[774], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 774 [pid 774] set_robust_list(0x7fc84e07e9e0, 24 [pid 772] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... set_robust_list resumed>) = 0 [pid 772] <... futex resumed>) = 0 [pid 774] umount2("./file0", MNT_DETACH [pid 772] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] <... umount2 resumed>) = 0 [pid 774] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = 1 [pid 772] exit_group(0 [pid 774] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 772] <... exit_group resumed>) = ? [pid 773] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 774] <... futex resumed>) = ? [pid 773] +++ exited with 0 +++ [pid 774] +++ exited with 0 +++ [pid 772] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=772, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 775 ./strace-static-x86_64: Process 775 attached [pid 775] set_robust_list(0x5555564465e0, 24) = 0 [pid 775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 775] setpgid(0, 0) = 0 [pid 775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 775] write(3, "1000", 4) = 4 [pid 775] close(3) = 0 [pid 775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 775] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 775] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 776 attached [pid 776] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 775] <... clone resumed>, parent_tid=[776], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 776 [pid 775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 776] <... futex resumed>) = 0 [pid 775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 775] <... futex resumed>) = 0 [pid 775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 776] <... futex resumed>) = 0 [pid 775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 775] <... futex resumed>) = 0 [pid 775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 775] <... futex resumed>) = 0 [pid 775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 775] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 775] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 776] umount2("./file0", MNT_DETACH [pid 775] <... clone resumed>, parent_tid=[777], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 777 [pid 775] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 777 attached [pid 777] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 777] umount2("./file0", MNT_DETACH [pid 776] <... umount2 resumed>) = 0 [pid 776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 777] <... umount2 resumed>) = 0 [pid 777] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = 0 [pid 776] <... futex resumed>) = 0 [pid 775] exit_group(0) = ? [pid 777] <... futex resumed>) = ? [pid 777] +++ exited with 0 +++ [pid 776] +++ exited with 0 +++ [pid 775] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=775, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 778 attached , child_tidptr=0x5555564465d0) = 778 [pid 778] set_robust_list(0x5555564465e0, 24) = 0 [pid 778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 778] setpgid(0, 0) = 0 [pid 778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 778] write(3, "1000", 4) = 4 [pid 778] close(3) = 0 [pid 778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 778] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 778] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 779 attached , parent_tid=[779], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 779 [pid 779] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 779] <... futex resumed>) = 0 [pid 778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 779] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 779] <... futex resumed>) = 0 [pid 779] mount(NULL, "./file0", "ramfs", 0, NULL [pid 778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 779] <... mount resumed>) = 0 [pid 779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] <... futex resumed>) = 0 [pid 778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 779] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 779] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 778] <... futex resumed>) = 0 [pid 778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 779] umount2("./file0", MNT_DETACH [pid 778] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 778] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 779] <... umount2 resumed>) = 0 [pid 778] <... clone resumed>, parent_tid=[780], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 780 [pid 778] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 780 attached [pid 780] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 780] umount2("./file0", MNT_DETACH [pid 779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... umount2 resumed>) = 0 [pid 779] <... futex resumed>) = 0 [pid 780] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] <... futex resumed>) = 0 [pid 778] exit_group(0) = ? [pid 779] <... futex resumed>) = ? [pid 779] +++ exited with 0 +++ [pid 780] <... futex resumed>) = ? [pid 780] +++ exited with 0 +++ [pid 778] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=778, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 781 ./strace-static-x86_64: Process 781 attached [pid 781] set_robust_list(0x5555564465e0, 24) = 0 [pid 781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 781] setpgid(0, 0) = 0 [pid 781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 781] write(3, "1000", 4) = 4 [pid 781] close(3) = 0 [pid 781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 781] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 781] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 782 attached [pid 782] set_robust_list(0x7fc84e09f9e0, 24 [pid 781] <... clone resumed>, parent_tid=[782], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 782 [pid 782] <... set_robust_list resumed>) = 0 [pid 781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 781] <... futex resumed>) = 0 [pid 782] mount(NULL, "./file0", "ramfs", 0, NULL [pid 781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] <... mount resumed>) = 0 [pid 782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] <... futex resumed>) = 0 [pid 782] <... futex resumed>) = 1 [pid 781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 781] <... futex resumed>) = 0 [pid 781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] <... mount resumed>) = 0 [pid 782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 781] <... futex resumed>) = 0 [pid 782] umount2("./file0", MNT_DETACH [pid 781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 782] <... umount2 resumed>) = 0 [pid 781] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 782] <... futex resumed>) = 0 ./strace-static-x86_64: Process 783 attached [pid 782] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] <... clone resumed>, parent_tid=[783], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 783 [pid 783] set_robust_list(0x7fc84e07e9e0, 24 [pid 781] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 781] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... set_robust_list resumed>) = 0 [pid 783] umount2("./file0", MNT_DETACH) = 0 [pid 783] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 781] <... futex resumed>) = 0 [pid 783] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] exit_group(0) = ? [pid 782] <... futex resumed>) = ? [pid 783] <... futex resumed>) = ? [pid 783] +++ exited with 0 +++ [pid 782] +++ exited with 0 +++ [pid 781] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=781, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 784 ./strace-static-x86_64: Process 784 attached [pid 784] set_robust_list(0x5555564465e0, 24) = 0 [pid 784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 784] setpgid(0, 0) = 0 [pid 784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 784] write(3, "1000", 4) = 4 [pid 784] close(3) = 0 [pid 784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 784] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 784] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 785 attached , parent_tid=[785], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 785 [pid 785] set_robust_list(0x7fc84e09f9e0, 24 [pid 784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... set_robust_list resumed>) = 0 [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] <... futex resumed>) = 0 [pid 785] <... futex resumed>) = 1 [pid 784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] mount(NULL, "./file0", "ramfs", 0, NULL [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... mount resumed>) = 0 [pid 785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] <... futex resumed>) = 0 [pid 785] <... futex resumed>) = 1 [pid 784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... mount resumed>) = 0 [pid 785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] umount2("./file0", MNT_DETACH [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 784] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 784] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 785] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 786 attached [pid 785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] set_robust_list(0x7fc84e07e9e0, 24 [pid 785] <... futex resumed>) = 0 [pid 784] <... clone resumed>, parent_tid=[786], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 786 [pid 786] <... set_robust_list resumed>) = 0 [pid 784] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 784] <... futex resumed>) = 0 [pid 786] umount2("./file0", MNT_DETACH [pid 784] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 786] <... umount2 resumed>) = 0 [pid 786] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 784] <... futex resumed>) = 0 [pid 786] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 784] exit_group(0) = ? [pid 785] <... futex resumed>) = ? [pid 785] +++ exited with 0 +++ [pid 786] <... futex resumed>) = ? [pid 786] +++ exited with 0 +++ [pid 784] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=784, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 787 ./strace-static-x86_64: Process 787 attached [pid 787] set_robust_list(0x5555564465e0, 24) = 0 [pid 787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 787] setpgid(0, 0) = 0 [pid 787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 787] write(3, "1000", 4) = 4 [pid 787] close(3) = 0 [pid 787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 787] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 787] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 788 attached , parent_tid=[788], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 788 [pid 788] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 788] <... futex resumed>) = 0 [pid 788] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 788] <... futex resumed>) = 0 [pid 787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] <... futex resumed>) = 0 [pid 787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 788] <... futex resumed>) = 0 [pid 788] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] <... mount resumed>) = 0 [pid 788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] <... futex resumed>) = 0 [pid 787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 788] <... futex resumed>) = 0 [pid 788] umount2("./file0", MNT_DETACH [pid 787] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 788] <... umount2 resumed>) = 0 [pid 787] <... mmap resumed>) = 0x7fc84e05e000 [pid 788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 787] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 789 attached , parent_tid=[789], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 789 [pid 789] set_robust_list(0x7fc84e07e9e0, 24 [pid 787] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... set_robust_list resumed>) = 0 [pid 787] <... futex resumed>) = 0 [pid 787] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] umount2("./file0", MNT_DETACH) = 0 [pid 789] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 787] <... futex resumed>) = 0 [pid 789] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] exit_group(0) = ? [pid 788] <... futex resumed>) = ? [pid 789] <... futex resumed>) = ? [pid 788] +++ exited with 0 +++ [pid 789] +++ exited with 0 +++ [pid 787] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=787, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 790 ./strace-static-x86_64: Process 790 attached [pid 790] set_robust_list(0x5555564465e0, 24) = 0 [pid 790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 790] setpgid(0, 0) = 0 [pid 790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 790] write(3, "1000", 4) = 4 [pid 790] close(3) = 0 [pid 790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 790] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 790] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[791], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 791 [pid 790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 791 attached [pid 791] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 791] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... futex resumed>) = 0 [pid 790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 791] <... futex resumed>) = 1 [pid 791] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... futex resumed>) = 0 [pid 790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 791] <... futex resumed>) = 1 [pid 791] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... futex resumed>) = 0 [pid 791] <... futex resumed>) = 1 [pid 790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] umount2("./file0", MNT_DETACH [pid 790] <... futex resumed>) = 0 [pid 790] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 790] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 791] <... umount2 resumed>) = 0 [pid 790] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 792 attached ) = 0 [pid 792] set_robust_list(0x7fc84e07e9e0, 24 [pid 791] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 790] <... clone resumed>, parent_tid=[792], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 792 [pid 792] <... set_robust_list resumed>) = 0 [pid 790] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] umount2("./file0", MNT_DETACH [pid 790] <... futex resumed>) = 0 [pid 790] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 792] <... umount2 resumed>) = 0 [pid 792] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... futex resumed>) = 0 [pid 792] <... futex resumed>) = 1 [pid 790] exit_group(0 [pid 792] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 791] <... futex resumed>) = ? [pid 792] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 790] <... exit_group resumed>) = ? [pid 791] +++ exited with 0 +++ [pid 792] +++ exited with 0 +++ [pid 790] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=790, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 793 ./strace-static-x86_64: Process 793 attached [pid 793] set_robust_list(0x5555564465e0, 24) = 0 [pid 793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 793] setpgid(0, 0) = 0 [pid 793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 793] write(3, "1000", 4) = 4 [pid 793] close(3) = 0 [pid 793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 793] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 793] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 793] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 794 attached , parent_tid=[794], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 794 [pid 794] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 794] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 794] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 794] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 794] umount2("./file0", MNT_DETACH) = 0 [pid 794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 794] umount2("./file0", MNT_DETACH) = 0 [pid 793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 793] exit_group(0) = ? [pid 794] <... futex resumed>) = ? [pid 794] +++ exited with 0 +++ [pid 793] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=793, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 795 ./strace-static-x86_64: Process 795 attached [pid 795] set_robust_list(0x5555564465e0, 24) = 0 [pid 795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 795] setpgid(0, 0) = 0 [pid 795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 795] write(3, "1000", 4) = 4 [pid 795] close(3) = 0 [pid 795] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 795] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 795] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[796], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 796 ./strace-static-x86_64: Process 796 attached [pid 795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 796] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 0 [pid 795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 796] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 796] <... futex resumed>) = 0 [pid 796] mount(NULL, "./file0", "ramfs", 0, NULL [pid 795] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... mount resumed>) = 0 [pid 796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 796] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 796] <... futex resumed>) = 0 [pid 796] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 795] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... mount resumed>) = 0 [pid 796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 796] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 795] <... futex resumed>) = 0 [pid 795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 796] <... futex resumed>) = 0 [pid 796] umount2("./file0", MNT_DETACH [pid 795] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 795] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 795] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 795] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 796] <... umount2 resumed>) = 0 [pid 796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... clone resumed>, parent_tid=[797], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 797 [pid 796] <... futex resumed>) = 0 [pid 795] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 795] <... futex resumed>) = 0 ./strace-static-x86_64: Process 797 attached [pid 795] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 797] umount2("./file0", MNT_DETACH) = 0 [pid 797] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 795] <... futex resumed>) = 0 [pid 795] exit_group(0) = ? [pid 796] <... futex resumed>) = ? [pid 796] +++ exited with 0 +++ [pid 797] +++ exited with 0 +++ [pid 795] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=795, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 798 ./strace-static-x86_64: Process 798 attached [pid 798] set_robust_list(0x5555564465e0, 24) = 0 [pid 798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 798] setpgid(0, 0) = 0 [pid 798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 798] write(3, "1000", 4) = 4 [pid 798] close(3) = 0 [pid 798] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 798] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 798] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 799 attached , parent_tid=[799], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 799 [pid 799] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 798] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 799] <... mount resumed>) = 0 [pid 799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] <... futex resumed>) = 0 [pid 798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 799] <... futex resumed>) = 0 [pid 799] umount2("./file0", MNT_DETACH) = 0 [pid 798] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] <... futex resumed>) = 0 [pid 798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 798] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 798] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 800 attached , parent_tid=[800], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 800 [pid 800] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 800] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 800] <... futex resumed>) = 0 [pid 800] umount2("./file0", MNT_DETACH [pid 798] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 800] <... umount2 resumed>) = 0 [pid 800] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 800] <... futex resumed>) = 0 [pid 800] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] exit_group(0 [pid 799] <... futex resumed>) = ? [pid 798] <... exit_group resumed>) = ? [pid 799] +++ exited with 0 +++ [pid 800] <... futex resumed>) = ? [pid 800] +++ exited with 0 +++ [pid 798] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=798, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 801 ./strace-static-x86_64: Process 801 attached [pid 801] set_robust_list(0x5555564465e0, 24) = 0 [pid 801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 801] setpgid(0, 0) = 0 [pid 801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 801] write(3, "1000", 4) = 4 [pid 801] close(3) = 0 [pid 801] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 801] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 801] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 801] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[802], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 802 ./strace-static-x86_64: Process 802 attached [pid 802] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 802] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 802] <... futex resumed>) = 0 [pid 802] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 802] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 802] <... futex resumed>) = 0 [pid 802] mount(NULL, "./file0", "ramfs", 0, NULL [pid 801] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 802] <... mount resumed>) = 0 [pid 802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 802] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 802] <... futex resumed>) = 0 [pid 802] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 801] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 802] <... mount resumed>) = 0 [pid 802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 802] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... futex resumed>) = 0 [pid 801] <... futex resumed>) = 1 [pid 802] umount2("./file0", MNT_DETACH [pid 801] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... umount2 resumed>) = 0 [pid 801] <... futex resumed>) = 0 [pid 802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 802] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 801] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 801] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[803], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 803 [pid 801] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 801] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 803 attached [pid 803] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 803] umount2("./file0", MNT_DETACH) = 0 [pid 803] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 801] <... futex resumed>) = 0 [pid 803] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] exit_group(0) = ? [pid 802] <... futex resumed>) = ? [pid 802] +++ exited with 0 +++ [pid 803] <... futex resumed>) = ? [pid 803] +++ exited with 0 +++ [pid 801] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=801, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 804 ./strace-static-x86_64: Process 804 attached [pid 804] set_robust_list(0x5555564465e0, 24) = 0 [pid 804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 804] setpgid(0, 0) = 0 [pid 804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 804] write(3, "1000", 4) = 4 [pid 804] close(3) = 0 [pid 804] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 804] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 804] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 805 attached , parent_tid=[805], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 805 [pid 805] set_robust_list(0x7fc84e09f9e0, 24 [pid 804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... set_robust_list resumed>) = 0 [pid 804] <... futex resumed>) = 0 [pid 804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 805] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 805] <... futex resumed>) = 0 [pid 805] mount(NULL, "./file0", "ramfs", 0, NULL [pid 804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 805] <... mount resumed>) = 0 [pid 805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 804] <... futex resumed>) = 0 [pid 804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 805] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 804] <... futex resumed>) = 0 [pid 804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 804] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 804] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 804] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 805] umount2("./file0", MNT_DETACH [pid 804] <... clone resumed>, parent_tid=[806], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 806 [pid 804] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 805] <... umount2 resumed>) = 0 [pid 804] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 806 attached [pid 806] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 806] umount2("./file0", MNT_DETACH) = 0 [pid 805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 804] <... futex resumed>) = 0 [pid 804] exit_group(0) = ? [pid 805] <... futex resumed>) = ? [pid 806] <... futex resumed>) = ? [pid 805] +++ exited with 0 +++ [pid 806] +++ exited with 0 +++ [pid 804] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=804, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 807 ./strace-static-x86_64: Process 807 attached [pid 807] set_robust_list(0x5555564465e0, 24) = 0 [pid 807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 807] setpgid(0, 0) = 0 [pid 807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 807] write(3, "1000", 4) = 4 [pid 807] close(3) = 0 [pid 807] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 807] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 807] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 807] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 808 attached , parent_tid=[808], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 808 [pid 808] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 808] <... futex resumed>) = 0 [pid 808] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 807] <... futex resumed>) = 0 [pid 808] mount(NULL, "./file0", "ramfs", 0, NULL [pid 807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] <... mount resumed>) = 0 [pid 807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 807] <... futex resumed>) = 0 [pid 808] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] <... mount resumed>) = 0 [pid 808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 807] <... futex resumed>) = 0 [pid 808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 807] <... futex resumed>) = 0 [pid 808] umount2("./file0", MNT_DETACH [pid 807] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 807] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 807] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 807] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[809], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 809 [pid 808] <... umount2 resumed>) = 0 [pid 807] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 807] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 809 attached [pid 808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 809] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 809] umount2("./file0", MNT_DETACH) = 0 [pid 809] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 807] <... futex resumed>) = 0 [pid 807] exit_group(0) = ? [pid 809] +++ exited with 0 +++ [pid 808] <... futex resumed>) = ? [pid 808] +++ exited with 0 +++ [pid 807] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=807, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 810 ./strace-static-x86_64: Process 810 attached [pid 810] set_robust_list(0x5555564465e0, 24) = 0 [pid 810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 810] setpgid(0, 0) = 0 [pid 810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 810] write(3, "1000", 4) = 4 [pid 810] close(3) = 0 [pid 810] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 810] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 810] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 811 attached , parent_tid=[811], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 811 [pid 811] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 811] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 811] <... futex resumed>) = 0 [pid 811] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 811] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 811] <... futex resumed>) = 0 [pid 810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 811] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 811] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 810] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... futex resumed>) = 0 [pid 810] <... futex resumed>) = 1 [pid 811] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 811] <... mount resumed>) = 0 [pid 811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 810] <... futex resumed>) = 0 [pid 810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 810] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 811] umount2("./file0", MNT_DETACH [pid 810] <... mprotect resumed>) = 0 [pid 811] <... umount2 resumed>) = 0 [pid 810] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] <... clone resumed>, parent_tid=[812], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 812 [pid 810] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 810] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 812 attached [pid 812] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 812] umount2("./file0", MNT_DETACH [pid 811] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] <... umount2 resumed>) = 0 [pid 812] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 810] <... futex resumed>) = 0 [pid 810] exit_group(0) = ? [pid 811] <... futex resumed>) = ? [pid 811] +++ exited with 0 +++ [pid 812] +++ exited with 0 +++ [pid 810] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=810, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 813 ./strace-static-x86_64: Process 813 attached [pid 813] set_robust_list(0x5555564465e0, 24) = 0 [pid 813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 813] setpgid(0, 0) = 0 [pid 813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 813] write(3, "1000", 4) = 4 [pid 813] close(3) = 0 [pid 813] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 813] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 813] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 814 attached [pid 814] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 814] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... clone resumed>, parent_tid=[814], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 814 [pid 813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 814] <... futex resumed>) = 0 [pid 813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 814] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 814] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... futex resumed>) = 0 [pid 813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 814] <... futex resumed>) = 0 [pid 814] mount(NULL, "./file0", "ramfs", 0, NULL [pid 813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 814] <... mount resumed>) = 0 [pid 814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 813] <... futex resumed>) = 0 [pid 813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 814] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 813] <... futex resumed>) = 0 [pid 813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 813] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 813] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 813] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 814] umount2("./file0", MNT_DETACH [pid 813] <... clone resumed>, parent_tid=[815], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 815 [pid 813] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 814] <... umount2 resumed>) = 0 [pid 813] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 815 attached [pid 815] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 815] umount2("./file0", MNT_DETACH) = 0 [pid 814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... futex resumed>) = 0 [pid 813] exit_group(0) = ? [pid 814] <... futex resumed>) = ? [pid 815] <... futex resumed>) = ? [pid 814] +++ exited with 0 +++ [pid 815] +++ exited with 0 +++ [pid 813] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=813, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 816 ./strace-static-x86_64: Process 816 attached [pid 816] set_robust_list(0x5555564465e0, 24) = 0 [pid 816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 816] setpgid(0, 0) = 0 [pid 816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 816] write(3, "1000", 4) = 4 [pid 816] close(3) = 0 [pid 816] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 816] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 816] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[817], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 817 [pid 816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 817 attached [pid 817] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 817] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] <... futex resumed>) = 0 [pid 816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... futex resumed>) = 1 [pid 817] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] <... futex resumed>) = 0 [pid 816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... futex resumed>) = 1 [pid 817] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 816] <... futex resumed>) = 0 [pid 816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 816] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 817] umount2("./file0", MNT_DETACH [pid 816] <... mprotect resumed>) = 0 [pid 816] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[818], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 818 [pid 816] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 816] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 818 attached [pid 818] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 818] umount2("./file0", MNT_DETACH) = 0 [pid 818] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] <... futex resumed>) = 0 [pid 816] exit_group(0) = ? [pid 818] <... futex resumed>) = ? [pid 818] +++ exited with 0 +++ [pid 817] <... futex resumed>) = ? [pid 817] +++ exited with 0 +++ [pid 816] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=816, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 819 ./strace-static-x86_64: Process 819 attached [pid 819] set_robust_list(0x5555564465e0, 24) = 0 [pid 819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 819] setpgid(0, 0) = 0 [pid 819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 819] write(3, "1000", 4) = 4 [pid 819] close(3) = 0 [pid 819] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 819] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 819] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 820 attached , parent_tid=[820], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 820 [pid 820] set_robust_list(0x7fc84e09f9e0, 24 [pid 819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] <... set_robust_list resumed>) = 0 [pid 819] <... futex resumed>) = 0 [pid 819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... futex resumed>) = 0 [pid 820] <... futex resumed>) = 1 [pid 819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] mount(NULL, "./file0", "ramfs", 0, NULL [pid 819] <... futex resumed>) = 0 [pid 819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] <... mount resumed>) = 0 [pid 820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 819] <... futex resumed>) = 0 [pid 820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 819] <... futex resumed>) = 0 [pid 820] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] <... mount resumed>) = 0 [pid 820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... futex resumed>) = 0 [pid 820] <... futex resumed>) = 1 [pid 819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] umount2("./file0", MNT_DETACH [pid 819] <... futex resumed>) = 0 [pid 819] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 819] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 819] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 820] <... umount2 resumed>) = 0 [pid 820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 821 attached ) = 0 [pid 819] <... clone resumed>, parent_tid=[821], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 821 [pid 821] set_robust_list(0x7fc84e07e9e0, 24 [pid 820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 821] <... set_robust_list resumed>) = 0 [pid 819] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] umount2("./file0", MNT_DETACH [pid 819] <... futex resumed>) = 0 [pid 819] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 821] <... umount2 resumed>) = 0 [pid 821] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 819] <... futex resumed>) = 0 [pid 819] exit_group(0 [pid 821] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 819] <... exit_group resumed>) = ? [pid 820] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 820] +++ exited with 0 +++ [pid 821] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 821] +++ exited with 0 +++ [pid 819] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=819, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 822 ./strace-static-x86_64: Process 822 attached [pid 822] set_robust_list(0x5555564465e0, 24) = 0 [pid 822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 822] setpgid(0, 0) = 0 [pid 822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 822] write(3, "1000", 4) = 4 [pid 822] close(3) = 0 [pid 822] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 822] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 822] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 823 attached [pid 823] set_robust_list(0x7fc84e09f9e0, 24 [pid 822] <... clone resumed>, parent_tid=[823], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 823 [pid 823] <... set_robust_list resumed>) = 0 [pid 823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 823] <... futex resumed>) = 0 [pid 823] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 823] <... futex resumed>) = 0 [pid 823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 823] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] <... futex resumed>) = 1 [pid 822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 823] <... futex resumed>) = 0 [pid 823] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 823] <... mount resumed>) = 0 [pid 823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 822] <... futex resumed>) = 0 [pid 823] umount2("./file0", MNT_DETACH [pid 822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 822] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 822] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 822] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 823] <... umount2 resumed>) = 0 [pid 823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] <... clone resumed>, parent_tid=[824], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 824 ./strace-static-x86_64: Process 824 attached [pid 822] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] set_robust_list(0x7fc84e07e9e0, 24 [pid 822] <... futex resumed>) = 0 [pid 824] <... set_robust_list resumed>) = 0 [pid 822] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 824] umount2("./file0", MNT_DETACH) = 0 [pid 824] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 822] <... futex resumed>) = 0 [pid 822] exit_group(0) = ? [pid 823] <... futex resumed>) = ? [pid 823] +++ exited with 0 +++ [pid 824] +++ exited with 0 +++ [pid 822] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=822, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 825 ./strace-static-x86_64: Process 825 attached [pid 825] set_robust_list(0x5555564465e0, 24) = 0 [pid 825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 825] setpgid(0, 0) = 0 [pid 825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 825] write(3, "1000", 4) = 4 [pid 825] close(3) = 0 [pid 825] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 825] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 825] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 826 attached [pid 826] set_robust_list(0x7fc84e09f9e0, 24 [pid 825] <... clone resumed>, parent_tid=[826], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 826 [pid 826] <... set_robust_list resumed>) = 0 [pid 825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 825] <... futex resumed>) = 0 [pid 825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 825] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 825] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 827 attached , parent_tid=[827], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 827 [pid 825] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 825] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] umount2("./file0", MNT_DETACH [pid 827] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 827] umount2("./file0", MNT_DETACH) = 0 [pid 826] <... umount2 resumed>) = 0 [pid 827] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 825] <... futex resumed>) = 0 [pid 827] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 826] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 825] exit_group(0) = ? [pid 826] <... futex resumed>) = ? [pid 827] <... futex resumed>) = ? [pid 826] +++ exited with 0 +++ [pid 827] +++ exited with 0 +++ [pid 825] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=825, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 828 ./strace-static-x86_64: Process 828 attached [pid 828] set_robust_list(0x5555564465e0, 24) = 0 [pid 828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 828] setpgid(0, 0) = 0 [pid 828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 828] write(3, "1000", 4) = 4 [pid 828] close(3) = 0 [pid 828] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 828] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 828] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[829], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 829 [pid 828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 829 attached [pid 829] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 829] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] <... futex resumed>) = 0 [pid 828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 829] <... futex resumed>) = 1 [pid 829] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 828] <... futex resumed>) = 0 [pid 828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 828] <... futex resumed>) = 0 [pid 828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 829] <... mount resumed>) = 0 [pid 829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] <... futex resumed>) = 0 [pid 829] <... futex resumed>) = 1 [pid 828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] umount2("./file0", MNT_DETACH [pid 828] <... futex resumed>) = 0 [pid 828] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 829] <... umount2 resumed>) = 0 [pid 828] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] <... mprotect resumed>) = 0 [pid 829] <... futex resumed>) = 0 [pid 828] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 830 attached [pid 828] <... clone resumed>, parent_tid=[830], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 830 [pid 830] set_robust_list(0x7fc84e07e9e0, 24 [pid 828] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] <... set_robust_list resumed>) = 0 [pid 828] <... futex resumed>) = 0 [pid 830] umount2("./file0", MNT_DETACH [pid 828] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] <... umount2 resumed>) = 0 [pid 830] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 828] <... futex resumed>) = 0 [pid 828] exit_group(0 [pid 830] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 828] <... exit_group resumed>) = ? [pid 829] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 830] <... futex resumed>) = ? [pid 829] +++ exited with 0 +++ [pid 830] +++ exited with 0 +++ [pid 828] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=828, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 831 ./strace-static-x86_64: Process 831 attached [pid 831] set_robust_list(0x5555564465e0, 24) = 0 [pid 831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 831] setpgid(0, 0) = 0 [pid 831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 831] write(3, "1000", 4) = 4 [pid 831] close(3) = 0 [pid 831] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 831] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 831] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 832 attached , parent_tid=[832], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 832 [pid 832] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] <... futex resumed>) = 0 [pid 832] mkdir("./file0", 000 [pid 831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] <... futex resumed>) = 0 [pid 831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] <... futex resumed>) = 0 [pid 832] mount(NULL, "./file0", "ramfs", 0, NULL [pid 831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... mount resumed>) = 0 [pid 832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] <... futex resumed>) = 0 [pid 831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] <... futex resumed>) = 0 [pid 832] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... mount resumed>) = 0 [pid 832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] <... futex resumed>) = 0 [pid 832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] umount2("./file0", MNT_DETACH [pid 831] <... futex resumed>) = 0 [pid 831] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 831] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 831] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 832] <... umount2 resumed>) = 0 [pid 832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 833 attached [pid 833] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 833] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] <... clone resumed>, parent_tid=[833], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 833 [pid 831] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 833] <... futex resumed>) = 0 [pid 831] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 833] umount2("./file0", MNT_DETACH) = 0 [pid 833] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 833] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] <... futex resumed>) = 0 [pid 831] exit_group(0) = ? [pid 832] <... futex resumed>) = 231 [pid 833] <... futex resumed>) = ? [pid 832] +++ exited with 0 +++ [pid 833] +++ exited with 0 +++ [pid 831] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=831, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 834 attached , child_tidptr=0x5555564465d0) = 834 [pid 834] set_robust_list(0x5555564465e0, 24) = 0 [pid 834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 834] setpgid(0, 0) = 0 [pid 834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 834] write(3, "1000", 4) = 4 [pid 834] close(3) = 0 [pid 834] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 834] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 834] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 835 attached , parent_tid=[835], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 835 [pid 835] set_robust_list(0x7fc84e09f9e0, 24 [pid 834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] <... set_robust_list resumed>) = 0 [pid 834] <... futex resumed>) = 0 [pid 834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 834] <... futex resumed>) = 0 [pid 835] mount(NULL, "./file0", "ramfs", 0, NULL [pid 834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] <... mount resumed>) = 0 [pid 835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 834] <... futex resumed>) = 0 [pid 835] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] <... mount resumed>) = 0 [pid 835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 834] <... futex resumed>) = 0 [pid 834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 834] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 834] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 834] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[836], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 836 [pid 835] umount2("./file0", MNT_DETACH [pid 834] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 834] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 836 attached [pid 836] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 836] umount2("./file0", MNT_DETACH [pid 835] <... umount2 resumed>) = 0 [pid 835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... umount2 resumed>) = 0 [pid 835] <... futex resumed>) = 0 [pid 836] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... futex resumed>) = 0 [pid 834] exit_group(0 [pid 835] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 834] <... exit_group resumed>) = ? [pid 835] <... futex resumed>) = ? [pid 836] <... futex resumed>) = ? [pid 836] +++ exited with 0 +++ [pid 835] +++ exited with 0 +++ [pid 834] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=834, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 837 ./strace-static-x86_64: Process 837 attached [pid 837] set_robust_list(0x5555564465e0, 24) = 0 [pid 837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 837] setpgid(0, 0) = 0 [pid 837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 837] write(3, "1000", 4) = 4 [pid 837] close(3) = 0 [pid 837] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 837] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 837] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 838 attached , parent_tid=[838], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 838 [pid 838] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 838] <... futex resumed>) = 0 [pid 838] mkdir("./file0", 000 [pid 837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 838] <... futex resumed>) = 0 [pid 838] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 838] <... futex resumed>) = 0 [pid 838] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... mount resumed>) = 0 [pid 838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] <... futex resumed>) = 0 [pid 837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 838] <... futex resumed>) = 0 [pid 838] umount2("./file0", MNT_DETACH [pid 837] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 837] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 838] <... umount2 resumed>) = 0 [pid 837] <... mprotect resumed>) = 0 [pid 838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 838] <... futex resumed>) = 0 [pid 838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 839 attached [pid 837] <... clone resumed>, parent_tid=[839], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 839 [pid 839] set_robust_list(0x7fc84e07e9e0, 24 [pid 837] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] <... set_robust_list resumed>) = 0 [pid 837] <... futex resumed>) = 0 [pid 839] umount2("./file0", MNT_DETACH [pid 837] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 839] <... umount2 resumed>) = 0 [pid 839] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... futex resumed>) = 0 [pid 839] <... futex resumed>) = 1 [pid 837] exit_group(0 [pid 839] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] <... exit_group resumed>) = ? [pid 838] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 839] <... futex resumed>) = ? [pid 838] +++ exited with 0 +++ [pid 839] +++ exited with 0 +++ [pid 837] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=837, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 840 ./strace-static-x86_64: Process 840 attached [pid 840] set_robust_list(0x5555564465e0, 24) = 0 [pid 840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 840] setpgid(0, 0) = 0 [pid 840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 840] write(3, "1000", 4) = 4 [pid 840] close(3) = 0 [pid 840] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 840] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 840] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 841 attached , parent_tid=[841], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 841 [pid 841] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 841] <... futex resumed>) = 0 [pid 841] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 841] <... futex resumed>) = 0 [pid 841] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] <... futex resumed>) = 0 [pid 840] <... futex resumed>) = 1 [pid 841] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] <... mount resumed>) = 0 [pid 841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 840] <... futex resumed>) = 0 [pid 840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 840] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 840] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 840] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 841] umount2("./file0", MNT_DETACH [pid 840] <... clone resumed>, parent_tid=[842], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 842 [pid 840] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 840] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 842 attached [pid 842] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 842] umount2("./file0", MNT_DETACH) = 0 [pid 842] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] <... umount2 resumed>) = 0 [pid 840] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = 1 [pid 842] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] exit_group(0) = ? [pid 842] <... futex resumed>) = ? [pid 842] +++ exited with 0 +++ [pid 841] <... futex resumed>) = ? [pid 841] +++ exited with 0 +++ [pid 840] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=840, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 843 ./strace-static-x86_64: Process 843 attached [pid 843] set_robust_list(0x5555564465e0, 24) = 0 [pid 843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 843] setpgid(0, 0) = 0 [pid 843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 843] write(3, "1000", 4) = 4 [pid 843] close(3) = 0 [pid 843] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 843] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 843] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[844], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 844 [pid 843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 844 attached [pid 844] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 844] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... futex resumed>) = 0 [pid 843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 844] <... futex resumed>) = 1 [pid 844] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... futex resumed>) = 0 [pid 843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 844] <... futex resumed>) = 1 [pid 844] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 843] <... futex resumed>) = 0 [pid 844] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 844] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 843] <... futex resumed>) = 0 [pid 844] umount2("./file0", MNT_DETACH [pid 843] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 843] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 843] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 844] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 845 attached [pid 844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... clone resumed>, parent_tid=[845], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 845 [pid 845] set_robust_list(0x7fc84e07e9e0, 24 [pid 844] <... futex resumed>) = 0 [pid 845] <... set_robust_list resumed>) = 0 [pid 843] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 844] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] umount2("./file0", MNT_DETACH [pid 843] <... futex resumed>) = 0 [pid 843] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] <... umount2 resumed>) = 0 [pid 845] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 843] <... futex resumed>) = 0 [pid 845] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 843] exit_group(0 [pid 844] <... futex resumed>) = ? [pid 845] <... futex resumed>) = ? [pid 843] <... exit_group resumed>) = ? [pid 844] +++ exited with 0 +++ [pid 845] +++ exited with 0 +++ [pid 843] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=843, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 846 ./strace-static-x86_64: Process 846 attached [pid 846] set_robust_list(0x5555564465e0, 24) = 0 [pid 846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 846] setpgid(0, 0) = 0 [pid 846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 846] write(3, "1000", 4) = 4 [pid 846] close(3) = 0 [pid 846] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 846] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 846] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 847 attached [pid 847] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 846] <... clone resumed>, parent_tid=[847], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 847 [pid 847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 847] <... futex resumed>) = 0 [pid 847] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 847] <... futex resumed>) = 0 [pid 846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 847] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 846] <... futex resumed>) = 0 [pid 846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 847] <... futex resumed>) = 0 [pid 846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 847] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = 0 [pid 847] <... futex resumed>) = 1 [pid 846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] umount2("./file0", MNT_DETACH [pid 846] <... futex resumed>) = 0 [pid 846] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 846] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 846] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 847] <... umount2 resumed>) = 0 [pid 847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 846] <... clone resumed>, parent_tid=[848], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 848 [pid 847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 846] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 848 attached ) = 0 [pid 848] set_robust_list(0x7fc84e07e9e0, 24 [pid 846] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 848] <... set_robust_list resumed>) = 0 [pid 848] umount2("./file0", MNT_DETACH) = 0 [pid 848] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 848] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 846] <... futex resumed>) = 0 [pid 846] exit_group(0) = ? [pid 847] <... futex resumed>) = ? [pid 847] +++ exited with 0 +++ [pid 848] <... futex resumed>) = ? [pid 848] +++ exited with 0 +++ [pid 846] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=846, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 849 ./strace-static-x86_64: Process 849 attached [pid 849] set_robust_list(0x5555564465e0, 24) = 0 [pid 849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 849] setpgid(0, 0) = 0 [pid 849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 849] write(3, "1000", 4) = 4 [pid 849] close(3) = 0 [pid 849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 849] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 849] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 850 attached , parent_tid=[850], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 850 [pid 850] set_robust_list(0x7fc84e09f9e0, 24 [pid 849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... set_robust_list resumed>) = 0 [pid 849] <... futex resumed>) = 0 [pid 849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 849] <... futex resumed>) = 0 [pid 850] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 849] <... futex resumed>) = 0 [pid 850] mount(NULL, "./file0", "ramfs", 0, NULL [pid 849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] <... mount resumed>) = 0 [pid 850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 849] <... futex resumed>) = 0 [pid 850] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 849] <... futex resumed>) = 0 [pid 850] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] <... mount resumed>) = 0 [pid 850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = 1 [pid 849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] umount2("./file0", MNT_DETACH [pid 849] <... futex resumed>) = 0 [pid 849] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 849] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 849] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 850] <... umount2 resumed>) = 0 [pid 850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 851 attached ) = 0 [pid 849] <... clone resumed>, parent_tid=[851], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 851 [pid 851] set_robust_list(0x7fc84e07e9e0, 24 [pid 850] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] <... set_robust_list resumed>) = 0 [pid 849] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] umount2("./file0", MNT_DETACH [pid 849] <... futex resumed>) = 0 [pid 849] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 851] <... umount2 resumed>) = 0 [pid 851] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... futex resumed>) = 0 [pid 851] <... futex resumed>) = 1 [pid 851] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 849] exit_group(0) = ? [pid 851] <... futex resumed>) = ? [pid 850] <... futex resumed>) = ? [pid 851] +++ exited with 0 +++ [pid 850] +++ exited with 0 +++ [pid 849] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=849, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 852 ./strace-static-x86_64: Process 852 attached [pid 852] set_robust_list(0x5555564465e0, 24) = 0 [pid 852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 852] setpgid(0, 0) = 0 [pid 852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 852] write(3, "1000", 4) = 4 [pid 852] close(3) = 0 [pid 852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 852] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 852] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 853 attached , parent_tid=[853], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 853 [pid 853] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 853] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 853] <... futex resumed>) = 0 [pid 853] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 853] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 853] <... futex resumed>) = 0 [pid 853] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 853] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 853] <... futex resumed>) = 0 [pid 852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 853] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 852] <... futex resumed>) = 0 [pid 852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 852] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 853] umount2("./file0", MNT_DETACH [pid 852] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 852] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[854], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 854 ./strace-static-x86_64: Process 854 attached [pid 853] <... umount2 resumed>) = 0 [pid 852] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 852] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 854] set_robust_list(0x7fc84e07e9e0, 24 [pid 853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... set_robust_list resumed>) = 0 [pid 853] <... futex resumed>) = 0 [pid 854] umount2("./file0", MNT_DETACH [pid 853] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] <... umount2 resumed>) = 0 [pid 854] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 852] <... futex resumed>) = 0 [pid 852] exit_group(0) = ? [pid 853] <... futex resumed>) = ? [pid 853] +++ exited with 0 +++ [pid 854] +++ exited with 0 +++ [pid 852] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=852, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 855 ./strace-static-x86_64: Process 855 attached [pid 855] set_robust_list(0x5555564465e0, 24) = 0 [pid 855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 855] setpgid(0, 0) = 0 [pid 855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 855] write(3, "1000", 4) = 4 [pid 855] close(3) = 0 [pid 855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 855] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 855] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 856 attached , parent_tid=[856], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 856 [pid 856] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] mount(NULL, "./file0", "ramfs", 0, NULL [pid 855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 856] <... mount resumed>) = 0 [pid 856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] <... futex resumed>) = 0 [pid 856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 856] <... mount resumed>) = 0 [pid 856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] <... futex resumed>) = 0 [pid 855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 856] <... futex resumed>) = 0 [pid 856] umount2("./file0", MNT_DETACH [pid 855] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] <... umount2 resumed>) = 0 [pid 855] <... futex resumed>) = 0 [pid 856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 855] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 855] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 857 attached , parent_tid=[857], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 857 [pid 857] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 857] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 857] <... futex resumed>) = 0 [pid 855] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 857] umount2("./file0", MNT_DETACH) = 0 [pid 857] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 857] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] <... futex resumed>) = 0 [pid 855] exit_group(0 [pid 857] <... futex resumed>) = 231 [pid 856] <... futex resumed>) = ? [pid 855] <... exit_group resumed>) = ? [pid 856] +++ exited with 0 +++ [pid 857] +++ exited with 0 +++ [pid 855] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 858 ./strace-static-x86_64: Process 858 attached [pid 858] set_robust_list(0x5555564465e0, 24) = 0 [pid 858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 858] setpgid(0, 0) = 0 [pid 858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 858] write(3, "1000", 4) = 4 [pid 858] close(3) = 0 [pid 858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 858] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 858] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 859 attached , parent_tid=[859], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 859 [pid 859] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 859] <... futex resumed>) = 0 [pid 859] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 859] <... futex resumed>) = 0 [pid 859] mount(NULL, "./file0", "ramfs", 0, NULL [pid 858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... mount resumed>) = 0 [pid 859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 859] <... futex resumed>) = 0 [pid 859] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... mount resumed>) = 0 [pid 859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 858] <... futex resumed>) = 0 [pid 858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 859] umount2("./file0", MNT_DETACH [pid 858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 858] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 858] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[860], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 860 [pid 858] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 858] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 860 attached [pid 860] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 860] umount2("./file0", MNT_DETACH) = 0 [pid 860] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] <... futex resumed>) = 0 [pid 860] <... futex resumed>) = 1 [pid 860] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 859] <... umount2 resumed>) = 0 [pid 859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 858] exit_group(0) = ? [pid 860] <... futex resumed>) = ? [pid 860] +++ exited with 0 +++ [pid 859] <... futex resumed>) = ? [pid 859] +++ exited with 0 +++ [pid 858] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=858, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 861 ./strace-static-x86_64: Process 861 attached [pid 861] set_robust_list(0x5555564465e0, 24) = 0 [pid 861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 861] setpgid(0, 0) = 0 [pid 861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 861] write(3, "1000", 4) = 4 [pid 861] close(3) = 0 [pid 861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 861] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 861] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[862], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 862 [pid 861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 862 attached [pid 862] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 862] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 862] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] <... mount resumed>) = 0 [pid 862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 861] <... futex resumed>) = 0 [pid 861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 861] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 861] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[863], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 863 [pid 862] umount2("./file0", MNT_DETACH [pid 861] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 861] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 863 attached [pid 863] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 863] umount2("./file0", MNT_DETACH [pid 862] <... umount2 resumed>) = 0 [pid 862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 863] <... umount2 resumed>) = 0 [pid 863] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... futex resumed>) = 0 [pid 861] exit_group(0) = ? [pid 863] <... futex resumed>) = ? [pid 863] +++ exited with 0 +++ [pid 862] +++ exited with 0 +++ [pid 861] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=861, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 864 ./strace-static-x86_64: Process 864 attached [pid 864] set_robust_list(0x5555564465e0, 24) = 0 [pid 864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 864] setpgid(0, 0) = 0 [pid 864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 864] write(3, "1000", 4) = 4 [pid 864] close(3) = 0 [pid 864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 864] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 864] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 865 attached [pid 865] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] <... clone resumed>, parent_tid=[865], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 865 [pid 864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 865] <... futex resumed>) = 0 [pid 865] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 865] <... futex resumed>) = 0 [pid 864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 865] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] <... futex resumed>) = 0 [pid 864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 865] <... futex resumed>) = 0 [pid 864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 865] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 864] <... futex resumed>) = 0 [pid 865] umount2("./file0", MNT_DETACH [pid 864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 864] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 864] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 864] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 865] <... umount2 resumed>) = 0 [pid 865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] <... clone resumed>, parent_tid=[866], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 866 ./strace-static-x86_64: Process 866 attached [pid 864] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] set_robust_list(0x7fc84e07e9e0, 24 [pid 864] <... futex resumed>) = 0 [pid 864] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 866] <... set_robust_list resumed>) = 0 [pid 866] umount2("./file0", MNT_DETACH) = 0 [pid 866] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 864] <... futex resumed>) = 0 [pid 866] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] exit_group(0 [pid 866] <... futex resumed>) = 231 [pid 864] <... exit_group resumed>) = ? [pid 865] <... futex resumed>) = ? [pid 865] +++ exited with 0 +++ [pid 866] +++ exited with 0 +++ [pid 864] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=864, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 867 ./strace-static-x86_64: Process 867 attached [pid 867] set_robust_list(0x5555564465e0, 24) = 0 [pid 867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 867] setpgid(0, 0) = 0 [pid 867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 867] write(3, "1000", 4) = 4 [pid 867] close(3) = 0 [pid 867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 867] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 867] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 868 attached , parent_tid=[868], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 868 [pid 868] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 867] <... futex resumed>) = 0 [pid 867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 868] <... futex resumed>) = 0 [pid 867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 867] <... futex resumed>) = 0 [pid 867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 868] <... futex resumed>) = 0 [pid 868] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] <... mount resumed>) = 0 [pid 868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 867] <... futex resumed>) = 0 [pid 867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 867] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 867] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 867] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 868] umount2("./file0", MNT_DETACH [pid 867] <... clone resumed>, parent_tid=[869], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 869 [pid 868] <... umount2 resumed>) = 0 [pid 867] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 867] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 869 attached [pid 869] set_robust_list(0x7fc84e07e9e0, 24 [pid 868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... set_robust_list resumed>) = 0 [pid 869] umount2("./file0", MNT_DETACH [pid 868] <... futex resumed>) = 0 [pid 868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 869] <... umount2 resumed>) = 0 [pid 869] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... futex resumed>) = 0 [pid 867] exit_group(0 [pid 868] <... futex resumed>) = ? [pid 867] <... exit_group resumed>) = ? [pid 868] +++ exited with 0 +++ [pid 869] <... futex resumed>) = ? [pid 869] +++ exited with 0 +++ [pid 867] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=867, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 870 ./strace-static-x86_64: Process 870 attached [pid 870] set_robust_list(0x5555564465e0, 24) = 0 [pid 870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 870] setpgid(0, 0) = 0 [pid 870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 870] write(3, "1000", 4) = 4 [pid 870] close(3) = 0 [pid 870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 870] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 870] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 871 attached , parent_tid=[871], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 871 [pid 871] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 871] <... futex resumed>) = 0 [pid 871] mkdir("./file0", 000 [pid 870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 871] <... futex resumed>) = 0 [pid 871] mount(NULL, "./file0", "ramfs", 0, NULL [pid 870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... mount resumed>) = 0 [pid 871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 870] <... futex resumed>) = 0 [pid 871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 871] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 871] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 871] <... mount resumed>) = 0 [pid 871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 871] <... futex resumed>) = 0 [pid 870] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 871] umount2("./file0", MNT_DETACH [pid 870] <... futex resumed>) = 0 [pid 870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 870] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 870] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 872 attached , parent_tid=[872], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 872 [pid 872] set_robust_list(0x7fc84e07e9e0, 24 [pid 870] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] <... set_robust_list resumed>) = 0 [pid 870] <... futex resumed>) = 0 [pid 872] umount2("./file0", MNT_DETACH [pid 870] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 872] <... umount2 resumed>) = 0 [pid 872] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 871] <... umount2 resumed>) = 0 [pid 871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] <... futex resumed>) = 1 [pid 870] <... futex resumed>) = 0 [pid 871] <... futex resumed>) = 0 [pid 870] exit_group(0 [pid 872] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 870] <... exit_group resumed>) = ? [pid 872] <... futex resumed>) = ? [pid 871] <... futex resumed>) = ? [pid 872] +++ exited with 0 +++ [pid 871] +++ exited with 0 +++ [pid 870] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=870, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 873 ./strace-static-x86_64: Process 873 attached [pid 873] set_robust_list(0x5555564465e0, 24) = 0 [pid 873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 873] setpgid(0, 0) = 0 [pid 873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 873] write(3, "1000", 4) = 4 [pid 873] close(3) = 0 [pid 873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 873] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 873] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 874 attached , parent_tid=[874], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 874 [pid 874] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 874] <... futex resumed>) = 0 [pid 873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 873] <... futex resumed>) = 0 [pid 874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 873] <... futex resumed>) = 0 [pid 874] mount(NULL, "./file0", "ramfs", 0, NULL [pid 873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] <... mount resumed>) = 0 [pid 874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 873] <... futex resumed>) = 0 [pid 873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 873] <... futex resumed>) = 0 [pid 874] <... mount resumed>) = 0 [pid 873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 873] <... futex resumed>) = 0 [pid 873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 873] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 873] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 874] umount2("./file0", MNT_DETACH [pid 873] <... clone resumed>, parent_tid=[875], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 875 [pid 873] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 873] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 875 attached [pid 875] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 875] umount2("./file0", MNT_DETACH [pid 874] <... umount2 resumed>) = 0 [pid 874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... umount2 resumed>) = 0 [pid 875] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 0 [pid 873] exit_group(0) = ? [pid 875] <... futex resumed>) = ? [pid 874] <... futex resumed>) = ? [pid 875] +++ exited with 0 +++ [pid 874] +++ exited with 0 +++ [pid 873] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=873, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 876 ./strace-static-x86_64: Process 876 attached [pid 876] set_robust_list(0x5555564465e0, 24) = 0 [pid 876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 876] setpgid(0, 0) = 0 [pid 876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 876] write(3, "1000", 4) = 4 [pid 876] close(3) = 0 [pid 876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 876] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 876] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 877 attached , parent_tid=[877], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 877 [pid 877] set_robust_list(0x7fc84e09f9e0, 24 [pid 876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... set_robust_list resumed>) = 0 [pid 876] <... futex resumed>) = 0 [pid 877] mkdir("./file0", 000 [pid 876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 877] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 877] <... futex resumed>) = 1 [pid 876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] mount(NULL, "./file0", "ramfs", 0, NULL [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 877] <... mount resumed>) = 0 [pid 877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 0 [pid 877] <... futex resumed>) = 1 [pid 876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 877] <... mount resumed>) = 0 [pid 877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 876] <... futex resumed>) = 0 [pid 877] umount2("./file0", MNT_DETACH [pid 876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 876] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 876] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 877] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 878 attached [pid 877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 878] set_robust_list(0x7fc84e07e9e0, 24 [pid 877] <... futex resumed>) = 0 [pid 876] <... clone resumed>, parent_tid=[878], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 878 [pid 878] <... set_robust_list resumed>) = 0 [pid 877] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 878] umount2("./file0", MNT_DETACH [pid 876] <... futex resumed>) = 0 [pid 876] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 878] <... umount2 resumed>) = 0 [pid 878] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 876] <... futex resumed>) = 0 [pid 876] exit_group(0) = ? [pid 877] <... futex resumed>) = ? [pid 877] +++ exited with 0 +++ [pid 878] +++ exited with 0 +++ [pid 876] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=876, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 879 ./strace-static-x86_64: Process 879 attached [pid 879] set_robust_list(0x5555564465e0, 24) = 0 [pid 879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 879] setpgid(0, 0) = 0 [pid 879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 879] write(3, "1000", 4) = 4 [pid 879] close(3) = 0 [pid 879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 879] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 879] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[880], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 880 ./strace-static-x86_64: Process 880 attached [pid 880] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 880] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 880] <... futex resumed>) = 0 [pid 880] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 880] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 880] <... futex resumed>) = 0 [pid 880] mount(NULL, "./file0", "ramfs", 0, NULL [pid 879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] <... mount resumed>) = 0 [pid 880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 880] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] <... futex resumed>) = 0 [pid 879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 879] <... futex resumed>) = 1 [pid 880] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] <... mount resumed>) = 0 [pid 880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 879] <... futex resumed>) = 0 [pid 879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 879] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 879] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 880] umount2("./file0", MNT_DETACH [pid 879] <... clone resumed>, parent_tid=[881], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 881 [pid 879] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 879] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 881 attached [pid 881] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 881] umount2("./file0", MNT_DETACH [pid 880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... umount2 resumed>) = 0 [pid 881] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 879] exit_group(0) = ? [pid 880] <... futex resumed>) = ? [pid 881] <... futex resumed>) = ? [pid 880] +++ exited with 0 +++ [pid 881] +++ exited with 0 +++ [pid 879] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 882 ./strace-static-x86_64: Process 882 attached [pid 882] set_robust_list(0x5555564465e0, 24) = 0 [pid 882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 882] setpgid(0, 0) = 0 [pid 882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 882] write(3, "1000", 4) = 4 [pid 882] close(3) = 0 [pid 882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 882] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 882] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 883 attached , parent_tid=[883], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 883 [pid 883] set_robust_list(0x7fc84e09f9e0, 24 [pid 882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] <... set_robust_list resumed>) = 0 [pid 882] <... futex resumed>) = 0 [pid 883] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 883] <... futex resumed>) = 0 [pid 882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 883] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 882] <... futex resumed>) = 0 [pid 882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 883] <... futex resumed>) = 0 [pid 882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 883] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 882] <... futex resumed>) = 0 [pid 883] umount2("./file0", MNT_DETACH [pid 882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 882] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 882] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 882] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 883] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 884 attached [pid 882] <... clone resumed>, parent_tid=[884], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 884 [pid 882] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] set_robust_list(0x7fc84e07e9e0, 24 [pid 882] <... futex resumed>) = 0 [pid 884] <... set_robust_list resumed>) = 0 [pid 882] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 884] umount2("./file0", MNT_DETACH) = 0 [pid 884] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 1 [pid 882] <... futex resumed>) = 0 [pid 884] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 883] <... futex resumed>) = 0 [pid 882] exit_group(0 [pid 883] ????( [pid 882] <... exit_group resumed>) = ? [pid 884] <... futex resumed>) = ? [pid 883] <... ???? resumed>) = ? [pid 884] +++ exited with 0 +++ [pid 883] +++ exited with 0 +++ [pid 882] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=882, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 885 ./strace-static-x86_64: Process 885 attached [pid 885] set_robust_list(0x5555564465e0, 24) = 0 [pid 885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 885] setpgid(0, 0) = 0 [pid 885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 885] write(3, "1000", 4) = 4 [pid 885] close(3) = 0 [pid 885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 885] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 885] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 886 attached , parent_tid=[886], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 886 [pid 886] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 886] <... futex resumed>) = 0 [pid 886] mkdir("./file0", 000 [pid 885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 885] <... futex resumed>) = 0 [pid 885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 885] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 885] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[887], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 887 [pid 885] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 885] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 887 attached [pid 886] umount2("./file0", MNT_DETACH [pid 887] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 887] umount2("./file0", MNT_DETACH) = 0 [pid 887] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = 0 [pid 887] <... futex resumed>) = 1 [pid 887] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] <... umount2 resumed>) = 0 [pid 886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 885] exit_group(0) = ? [pid 886] <... futex resumed>) = ? [pid 886] +++ exited with 0 +++ [pid 887] <... futex resumed>) = ? [pid 887] +++ exited with 0 +++ [pid 885] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=885, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 888 ./strace-static-x86_64: Process 888 attached [pid 888] set_robust_list(0x5555564465e0, 24) = 0 [pid 888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 888] setpgid(0, 0) = 0 [pid 888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 888] write(3, "1000", 4) = 4 [pid 888] close(3) = 0 [pid 888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 888] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 888] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 889 attached , parent_tid=[889], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 889 [pid 889] set_robust_list(0x7fc84e09f9e0, 24 [pid 888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] <... set_robust_list resumed>) = 0 [pid 888] <... futex resumed>) = 0 [pid 888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = 0 [pid 889] <... futex resumed>) = 1 [pid 888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] mount(NULL, "./file0", "ramfs", 0, NULL [pid 888] <... futex resumed>) = 0 [pid 888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... mount resumed>) = 0 [pid 889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 888] <... futex resumed>) = 0 [pid 889] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 888] <... futex resumed>) = 0 [pid 889] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... mount resumed>) = 0 [pid 889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 888] <... futex resumed>) = 0 [pid 889] umount2("./file0", MNT_DETACH [pid 888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 888] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 888] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 889] <... umount2 resumed>) = 0 [pid 888] <... mprotect resumed>) = 0 [pid 889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 889] <... futex resumed>) = 0 ./strace-static-x86_64: Process 890 attached [pid 889] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 888] <... clone resumed>, parent_tid=[890], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 890 [pid 888] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] set_robust_list(0x7fc84e07e9e0, 24 [pid 888] <... futex resumed>) = 0 [pid 888] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 890] <... set_robust_list resumed>) = 0 [pid 890] umount2("./file0", MNT_DETACH) = 0 [pid 890] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 888] <... futex resumed>) = 0 [pid 890] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 888] exit_group(0) = ? [pid 889] <... futex resumed>) = ? [pid 889] +++ exited with 0 +++ [pid 890] <... futex resumed>) = ? [pid 890] +++ exited with 0 +++ [pid 888] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=888, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 891 ./strace-static-x86_64: Process 891 attached [pid 891] set_robust_list(0x5555564465e0, 24) = 0 [pid 891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 891] setpgid(0, 0) = 0 [pid 891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 891] write(3, "1000", 4) = 4 [pid 891] close(3) = 0 [pid 891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 891] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 891] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 892 attached [pid 892] set_robust_list(0x7fc84e09f9e0, 24 [pid 891] <... clone resumed>, parent_tid=[892], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 892 [pid 892] <... set_robust_list resumed>) = 0 [pid 891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] mkdir("./file0", 000 [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 892] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 892] <... futex resumed>) = 1 [pid 891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] mount(NULL, "./file0", "ramfs", 0, NULL [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 892] <... mount resumed>) = 0 [pid 892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 892] <... futex resumed>) = 1 [pid 891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 892] <... mount resumed>) = 0 [pid 892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 892] <... futex resumed>) = 1 [pid 891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] umount2("./file0", MNT_DETACH [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 891] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 892] <... umount2 resumed>) = 0 [pid 891] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 893 attached [pid 892] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 891] <... clone resumed>, parent_tid=[893], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 893 [pid 893] set_robust_list(0x7fc84e07e9e0, 24 [pid 891] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... set_robust_list resumed>) = 0 [pid 891] <... futex resumed>) = 0 [pid 893] umount2("./file0", MNT_DETACH [pid 891] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 893] <... umount2 resumed>) = 0 [pid 893] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 891] <... futex resumed>) = 0 [pid 893] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 891] exit_group(0 [pid 893] <... futex resumed>) = ? [pid 892] <... futex resumed>) = ? [pid 891] <... exit_group resumed>) = ? [pid 892] +++ exited with 0 +++ [pid 893] +++ exited with 0 +++ [pid 891] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=891, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 894 ./strace-static-x86_64: Process 894 attached [pid 894] set_robust_list(0x5555564465e0, 24) = 0 [pid 894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 894] setpgid(0, 0) = 0 [pid 894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 894] write(3, "1000", 4) = 4 [pid 894] close(3) = 0 [pid 894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 894] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 894] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 895 attached , parent_tid=[895], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 895 [pid 895] set_robust_list(0x7fc84e09f9e0, 24 [pid 894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... set_robust_list resumed>) = 0 [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 895] <... futex resumed>) = 1 [pid 894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] mount(NULL, "./file0", "ramfs", 0, NULL [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] <... mount resumed>) = 0 [pid 895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 895] <... futex resumed>) = 1 [pid 894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] <... mount resumed>) = 0 [pid 895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 0 [pid 895] <... futex resumed>) = 1 [pid 894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] umount2("./file0", MNT_DETACH [pid 894] <... futex resumed>) = 0 [pid 894] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 894] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 895] <... umount2 resumed>) = 0 [pid 894] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... clone resumed>, parent_tid=[896], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 896 [pid 894] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 894] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] <... futex resumed>) = 0 [pid 895] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 896 attached [pid 896] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 896] umount2("./file0", MNT_DETACH) = 0 [pid 896] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 894] <... futex resumed>) = 0 [pid 894] exit_group(0) = ? [pid 895] <... futex resumed>) = ? [pid 895] +++ exited with 0 +++ [pid 896] +++ exited with 0 +++ [pid 894] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=894, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 897 ./strace-static-x86_64: Process 897 attached [pid 897] set_robust_list(0x5555564465e0, 24) = 0 [pid 897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 897] setpgid(0, 0) = 0 [pid 897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 897] write(3, "1000", 4) = 4 [pid 897] close(3) = 0 [pid 897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 897] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 897] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 897] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[898], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 898 [pid 897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 898 attached [pid 898] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 898] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... futex resumed>) = 0 [pid 897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... futex resumed>) = 1 [pid 898] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 897] <... futex resumed>) = 0 [pid 898] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... mount resumed>) = 0 [pid 898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 897] <... futex resumed>) = 0 [pid 898] umount2("./file0", MNT_DETACH [pid 897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 897] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 897] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 897] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 898] <... umount2 resumed>) = 0 [pid 897] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 898] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 899 attached [pid 899] set_robust_list(0x7fc84e07e9e0, 24 [pid 897] <... clone resumed>, parent_tid=[899], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 899 [pid 899] <... set_robust_list resumed>) = 0 [pid 897] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] umount2("./file0", MNT_DETACH [pid 897] <... futex resumed>) = 0 [pid 897] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 899] <... umount2 resumed>) = 0 [pid 899] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 897] <... futex resumed>) = 0 [pid 897] exit_group(0 [pid 899] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] <... exit_group resumed>) = ? [pid 898] <... futex resumed>) = ? [pid 899] <... futex resumed>) = ? [pid 898] +++ exited with 0 +++ [pid 899] +++ exited with 0 +++ [pid 897] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=897, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 900 ./strace-static-x86_64: Process 900 attached [pid 900] set_robust_list(0x5555564465e0, 24) = 0 [pid 900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 900] setpgid(0, 0) = 0 [pid 900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 900] write(3, "1000", 4) = 4 [pid 900] close(3) = 0 [pid 900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 900] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 900] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 901 attached [pid 901] set_robust_list(0x7fc84e09f9e0, 24 [pid 900] <... clone resumed>, parent_tid=[901], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 901 [pid 901] <... set_robust_list resumed>) = 0 [pid 901] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 901] <... futex resumed>) = 0 [pid 901] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 901] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 901] <... futex resumed>) = 0 [pid 901] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 900] <... futex resumed>) = 0 [pid 901] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 901] <... mount resumed>) = 0 [pid 901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 900] <... futex resumed>) = 0 [pid 901] umount2("./file0", MNT_DETACH [pid 900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 900] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... umount2 resumed>) = 0 [pid 900] <... futex resumed>) = 0 [pid 901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 901] <... futex resumed>) = 0 [pid 900] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 901] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 902 attached [pid 902] set_robust_list(0x7fc84e07e9e0, 24 [pid 900] <... clone resumed>, parent_tid=[902], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 902 [pid 902] <... set_robust_list resumed>) = 0 [pid 900] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] umount2("./file0", MNT_DETACH [pid 900] <... futex resumed>) = 0 [pid 900] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... umount2 resumed>) = 0 [pid 902] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 900] <... futex resumed>) = 0 [pid 902] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] exit_group(0) = ? [pid 901] <... futex resumed>) = ? [pid 901] +++ exited with 0 +++ [pid 902] <... futex resumed>) = ? [pid 902] +++ exited with 0 +++ [pid 900] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=900, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 903 attached , child_tidptr=0x5555564465d0) = 903 [pid 903] set_robust_list(0x5555564465e0, 24) = 0 [pid 903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 903] setpgid(0, 0) = 0 [pid 903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 903] write(3, "1000", 4) = 4 [pid 903] close(3) = 0 [pid 903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 903] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 903] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[904], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 904 [pid 903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 904 attached [pid 904] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 904] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 903] <... futex resumed>) = 0 [pid 903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 904] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 903] <... futex resumed>) = 0 [pid 904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 904] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] <... futex resumed>) = 0 [pid 904] <... futex resumed>) = 1 [pid 903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] umount2("./file0", MNT_DETACH [pid 903] <... futex resumed>) = 0 [pid 903] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 903] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 903] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 904] <... umount2 resumed>) = 0 [pid 904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] <... clone resumed>, parent_tid=[905], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 905 [pid 904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 903] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 905 attached [pid 905] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 905] umount2("./file0", MNT_DETACH) = 0 [pid 905] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 903] <... futex resumed>) = 0 [pid 903] exit_group(0) = ? [pid 904] <... futex resumed>) = ? [pid 904] +++ exited with 0 +++ [pid 905] +++ exited with 0 +++ [pid 903] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=903, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 906 ./strace-static-x86_64: Process 906 attached [pid 906] set_robust_list(0x5555564465e0, 24) = 0 [pid 906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 906] setpgid(0, 0) = 0 [pid 906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 906] write(3, "1000", 4) = 4 [pid 906] close(3) = 0 [pid 906] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 906] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 906] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[907], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 907 [pid 906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 907 attached [pid 907] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 907] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 906] <... futex resumed>) = 0 [pid 906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 906] <... futex resumed>) = 0 [pid 906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 906] <... futex resumed>) = 0 [pid 906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 907] umount2("./file0", MNT_DETACH [pid 906] <... mmap resumed>) = 0x7fc84e05e000 [pid 906] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 906] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 907] <... umount2 resumed>) = 0 [pid 906] <... clone resumed>, parent_tid=[908], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 908 [pid 906] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 906] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 908 attached [pid 908] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 908] umount2("./file0", MNT_DETACH [pid 907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] <... umount2 resumed>) = 0 [pid 908] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... futex resumed>) = 0 [pid 906] exit_group(0) = ? [pid 908] <... futex resumed>) = ? [pid 907] <... futex resumed>) = 231 [pid 908] +++ exited with 0 +++ [pid 907] +++ exited with 0 +++ [pid 906] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=906, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 909 ./strace-static-x86_64: Process 909 attached [pid 909] set_robust_list(0x5555564465e0, 24) = 0 [pid 909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 909] setpgid(0, 0) = 0 [pid 909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 909] write(3, "1000", 4) = 4 [pid 909] close(3) = 0 [pid 909] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 909] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 909] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 909] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 910 attached [pid 910] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 910] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 909] <... clone resumed>, parent_tid=[910], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 910 [pid 909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 910] <... futex resumed>) = 0 [pid 909] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 909] <... futex resumed>) = 0 [pid 910] mount(NULL, "./file0", "ramfs", 0, NULL [pid 909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] <... mount resumed>) = 0 [pid 909] <... futex resumed>) = 0 [pid 909] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 910] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 910] <... mount resumed>) = 0 [pid 909] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 909] <... futex resumed>) = 0 [pid 910] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 909] <... futex resumed>) = 0 [pid 910] umount2("./file0", MNT_DETACH [pid 909] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 910] <... umount2 resumed>) = 0 [pid 909] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... mmap resumed>) = 0x7fc84e05e000 [pid 910] <... futex resumed>) = 0 [pid 909] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 910] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 909] <... mprotect resumed>) = 0 [pid 909] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 911 attached , parent_tid=[911], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 911 [pid 911] set_robust_list(0x7fc84e07e9e0, 24 [pid 909] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] <... set_robust_list resumed>) = 0 [pid 909] <... futex resumed>) = 0 [pid 911] umount2("./file0", MNT_DETACH [pid 909] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 911] <... umount2 resumed>) = 0 [pid 911] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = 0 [pid 911] <... futex resumed>) = 1 [pid 909] exit_group(0 [pid 911] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] <... futex resumed>) = ? [pid 911] <... futex resumed>) = ? [pid 909] <... exit_group resumed>) = ? [pid 910] +++ exited with 0 +++ [pid 911] +++ exited with 0 +++ [pid 909] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=909, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 912 ./strace-static-x86_64: Process 912 attached [pid 912] set_robust_list(0x5555564465e0, 24) = 0 [pid 912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 912] setpgid(0, 0) = 0 [pid 912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 912] write(3, "1000", 4) = 4 [pid 912] close(3) = 0 [pid 912] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 912] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 912] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[913], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 913 [pid 912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 912] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 913 attached [pid 913] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 913] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] <... futex resumed>) = 0 [pid 912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 912] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 913] <... futex resumed>) = 1 [pid 913] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] <... futex resumed>) = 0 [pid 912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 912] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 913] <... futex resumed>) = 1 [pid 913] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] <... futex resumed>) = 0 [pid 913] <... futex resumed>) = 1 [pid 912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] umount2("./file0", MNT_DETACH [pid 912] <... futex resumed>) = 0 [pid 912] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 913] <... umount2 resumed>) = 0 [pid 912] <... mmap resumed>) = 0x7fc84e05e000 [pid 913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 913] <... futex resumed>) = 0 [pid 913] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] <... mprotect resumed>) = 0 [pid 912] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 914 attached , parent_tid=[914], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 914 [pid 914] set_robust_list(0x7fc84e07e9e0, 24 [pid 912] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 914] <... set_robust_list resumed>) = 0 [pid 912] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] umount2("./file0", MNT_DETACH) = 0 [pid 914] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] exit_group(0) = ? [pid 913] <... futex resumed>) = 231 [pid 914] <... futex resumed>) = ? [pid 914] +++ exited with 0 +++ [pid 913] +++ exited with 0 +++ [pid 912] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 915 ./strace-static-x86_64: Process 915 attached [pid 915] set_robust_list(0x5555564465e0, 24) = 0 [pid 915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 915] setpgid(0, 0) = 0 [pid 915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 915] write(3, "1000", 4) = 4 [pid 915] close(3) = 0 [pid 915] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 915] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 915] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 916 attached [pid 916] set_robust_list(0x7fc84e09f9e0, 24 [pid 915] <... clone resumed>, parent_tid=[916], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 916 [pid 916] <... set_robust_list resumed>) = 0 [pid 915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 916] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 915] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 915] <... futex resumed>) = 0 [pid 916] mount(NULL, "./file0", "ramfs", 0, NULL [pid 915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... mount resumed>) = 0 [pid 916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 915] <... futex resumed>) = 0 [pid 916] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... mount resumed>) = 0 [pid 916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 915] <... futex resumed>) = 0 [pid 916] umount2("./file0", MNT_DETACH [pid 915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 915] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 916] <... umount2 resumed>) = 0 [pid 915] <... mprotect resumed>) = 0 [pid 915] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 917 attached [pid 917] set_robust_list(0x7fc84e07e9e0, 24 [pid 915] <... clone resumed>, parent_tid=[917], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 917 [pid 917] <... set_robust_list resumed>) = 0 [pid 917] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 916] <... futex resumed>) = 0 [pid 915] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 915] <... futex resumed>) = 1 [pid 917] <... futex resumed>) = 0 [pid 917] umount2("./file0", MNT_DETACH [pid 915] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 917] <... umount2 resumed>) = 0 [pid 917] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 917] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 915] <... futex resumed>) = 0 [pid 915] exit_group(0) = ? [pid 917] <... futex resumed>) = ? [pid 916] <... futex resumed>) = ? [pid 917] +++ exited with 0 +++ [pid 916] +++ exited with 0 +++ [pid 915] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=915, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 918 ./strace-static-x86_64: Process 918 attached [pid 918] set_robust_list(0x5555564465e0, 24) = 0 [pid 918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 918] setpgid(0, 0) = 0 [pid 918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 918] write(3, "1000", 4) = 4 [pid 918] close(3) = 0 [pid 918] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 918] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 918] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 919 attached , parent_tid=[919], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 919 [pid 919] set_robust_list(0x7fc84e09f9e0, 24 [pid 918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... set_robust_list resumed>) = 0 [pid 918] <... futex resumed>) = 0 [pid 918] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 919] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 918] <... futex resumed>) = 0 [pid 918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] mount(NULL, "./file0", "ramfs", 0, NULL [pid 918] <... futex resumed>) = 0 [pid 918] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 919] <... mount resumed>) = 0 [pid 919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] <... futex resumed>) = 0 [pid 919] <... futex resumed>) = 1 [pid 918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 918] <... futex resumed>) = 0 [pid 918] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 919] <... mount resumed>) = 0 [pid 919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] <... futex resumed>) = 0 [pid 919] <... futex resumed>) = 1 [pid 918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] umount2("./file0", MNT_DETACH [pid 918] <... futex resumed>) = 0 [pid 918] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 918] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 918] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 919] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 920 attached [pid 919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 918] <... clone resumed>, parent_tid=[920], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 920 [pid 920] set_robust_list(0x7fc84e07e9e0, 24 [pid 919] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 920] <... set_robust_list resumed>) = 0 [pid 918] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] umount2("./file0", MNT_DETACH [pid 918] <... futex resumed>) = 0 [pid 920] <... umount2 resumed>) = 0 [pid 918] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 920] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] exit_group(0 [pid 920] <... futex resumed>) = ? [pid 919] <... futex resumed>) = ? [pid 918] <... exit_group resumed>) = ? [pid 919] +++ exited with 0 +++ [pid 920] +++ exited with 0 +++ [pid 918] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=918, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 921 ./strace-static-x86_64: Process 921 attached [pid 921] set_robust_list(0x5555564465e0, 24) = 0 [pid 921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 921] setpgid(0, 0) = 0 [pid 921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 921] write(3, "1000", 4) = 4 [pid 921] close(3) = 0 [pid 921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 921] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 921] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 921] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 922 attached [pid 922] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... clone resumed>, parent_tid=[922], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 922 [pid 921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 922] <... futex resumed>) = 0 [pid 921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 922] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... futex resumed>) = 0 [pid 921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 922] <... futex resumed>) = 0 [pid 921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 922] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... futex resumed>) = 0 [pid 922] <... futex resumed>) = 1 [pid 922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 922] <... futex resumed>) = 0 [pid 922] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 922] <... mount resumed>) = 0 [pid 922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 922] <... futex resumed>) = 0 [pid 922] umount2("./file0", MNT_DETACH [pid 921] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 922] <... umount2 resumed>) = 0 [pid 921] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... mmap resumed>) = 0x7fc84e05e000 [pid 922] <... futex resumed>) = 0 [pid 921] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... mprotect resumed>) = 0 [pid 921] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 923 attached , parent_tid=[923], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 923 [pid 923] set_robust_list(0x7fc84e07e9e0, 24 [pid 921] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 923] <... set_robust_list resumed>) = 0 [pid 921] <... futex resumed>) = 0 [pid 923] umount2("./file0", MNT_DETACH [pid 921] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... umount2 resumed>) = 0 [pid 923] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... futex resumed>) = 0 [pid 923] <... futex resumed>) = 1 [pid 921] exit_group(0 [pid 923] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 921] <... exit_group resumed>) = ? [pid 922] <... futex resumed>) = ? [pid 922] +++ exited with 0 +++ [pid 923] +++ exited with 0 +++ [pid 921] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=921, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 924 ./strace-static-x86_64: Process 924 attached [pid 924] set_robust_list(0x5555564465e0, 24) = 0 [pid 924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 924] setpgid(0, 0) = 0 [pid 924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 924] write(3, "1000", 4) = 4 [pid 924] close(3) = 0 [pid 924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 924] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 924] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 925 attached , parent_tid=[925], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 925 [pid 925] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] mkdir("./file0", 000 [pid 924] <... futex resumed>) = 0 [pid 925] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 924] <... futex resumed>) = 0 [pid 924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] mount(NULL, "./file0", "ramfs", 0, NULL [pid 924] <... futex resumed>) = 0 [pid 924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] <... mount resumed>) = 0 [pid 925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] <... futex resumed>) = 0 [pid 924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 925] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 924] <... futex resumed>) = 0 [pid 924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] umount2("./file0", MNT_DETACH [pid 924] <... futex resumed>) = 0 [pid 924] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 924] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 924] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[926], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 926 [pid 924] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 924] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 926 attached [pid 926] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 926] umount2("./file0", MNT_DETACH) = 0 [pid 925] <... umount2 resumed>) = 0 [pid 926] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] <... futex resumed>) = 0 [pid 926] <... futex resumed>) = 1 [pid 926] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 924] exit_group(0) = ? [pid 926] <... futex resumed>) = ? [pid 926] +++ exited with 0 +++ [pid 925] <... futex resumed>) = ? [pid 925] +++ exited with 0 +++ [pid 924] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 927 attached , child_tidptr=0x5555564465d0) = 927 [pid 927] set_robust_list(0x5555564465e0, 24) = 0 [pid 927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 927] setpgid(0, 0) = 0 [pid 927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 927] write(3, "1000", 4) = 4 [pid 927] close(3) = 0 [pid 927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 927] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 927] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 928 attached , parent_tid=[928], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 928 [pid 928] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 928] <... futex resumed>) = 0 [pid 928] mkdir("./file0", 000 [pid 927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 928] <... futex resumed>) = 0 [pid 928] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 928] <... futex resumed>) = 0 [pid 928] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 927] <... futex resumed>) = 0 [pid 927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 927] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 927] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 927] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 929 attached [pid 928] umount2("./file0", MNT_DETACH [pid 927] <... clone resumed>, parent_tid=[929], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 929 [pid 927] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 927] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 929] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 929] umount2("./file0", MNT_DETACH [pid 928] <... umount2 resumed>) = 0 [pid 928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 929] <... umount2 resumed>) = 0 [pid 929] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 927] <... futex resumed>) = 0 [pid 929] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] exit_group(0 [pid 928] <... futex resumed>) = ? [pid 927] <... exit_group resumed>) = ? [pid 929] <... futex resumed>) = ? [pid 929] +++ exited with 0 +++ [pid 928] +++ exited with 0 +++ [pid 927] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 930 ./strace-static-x86_64: Process 930 attached [pid 930] set_robust_list(0x5555564465e0, 24) = 0 [pid 930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 930] setpgid(0, 0) = 0 [pid 930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 930] write(3, "1000", 4) = 4 [pid 930] close(3) = 0 [pid 930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 930] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 930] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 931 attached , parent_tid=[931], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 931 [pid 931] set_robust_list(0x7fc84e09f9e0, 24 [pid 930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... set_robust_list resumed>) = 0 [pid 930] <... futex resumed>) = 0 [pid 930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 931] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = 1 [pid 930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] mount(NULL, "./file0", "ramfs", 0, NULL [pid 930] <... futex resumed>) = 0 [pid 930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 931] <... mount resumed>) = 0 [pid 931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = 1 [pid 930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 930] <... futex resumed>) = 0 [pid 930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 931] <... mount resumed>) = 0 [pid 931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = 1 [pid 930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] umount2("./file0", MNT_DETACH [pid 930] <... futex resumed>) = 0 [pid 930] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 930] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 930] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 931] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 932 attached [pid 931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... clone resumed>, parent_tid=[932], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 932 [pid 932] set_robust_list(0x7fc84e07e9e0, 24 [pid 931] <... futex resumed>) = 0 [pid 932] <... set_robust_list resumed>) = 0 [pid 930] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] umount2("./file0", MNT_DETACH [pid 931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 930] <... futex resumed>) = 0 [pid 930] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] <... umount2 resumed>) = 0 [pid 932] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 930] <... futex resumed>) = 0 [pid 932] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 930] exit_group(0 [pid 932] <... futex resumed>) = ? [pid 931] <... futex resumed>) = ? [pid 930] <... exit_group resumed>) = ? [pid 931] +++ exited with 0 +++ [pid 932] +++ exited with 0 +++ [pid 930] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=930, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 933 ./strace-static-x86_64: Process 933 attached [pid 933] set_robust_list(0x5555564465e0, 24) = 0 [pid 933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 933] setpgid(0, 0) = 0 [pid 933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 933] write(3, "1000", 4) = 4 [pid 933] close(3) = 0 [pid 933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 933] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 933] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 933] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 934 attached , parent_tid=[934], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 934 [pid 934] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 934] <... futex resumed>) = 0 [pid 934] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 934] <... futex resumed>) = 0 [pid 934] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 933] <... futex resumed>) = 0 [pid 933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 934] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 933] <... futex resumed>) = 0 [pid 933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 933] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 933] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 934] umount2("./file0", MNT_DETACH [pid 933] <... mmap resumed>) = 0x7fc84e05e000 [pid 933] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 933] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[935], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 935 [pid 934] <... umount2 resumed>) = 0 [pid 933] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 933] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 935 attached [pid 935] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 935] umount2("./file0", MNT_DETACH [pid 934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... umount2 resumed>) = 0 [pid 935] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] <... futex resumed>) = 0 [pid 933] exit_group(0) = ? [pid 935] <... futex resumed>) = ? [pid 934] <... futex resumed>) = ? [pid 935] +++ exited with 0 +++ [pid 934] +++ exited with 0 +++ [pid 933] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=933, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 936 ./strace-static-x86_64: Process 936 attached [pid 936] set_robust_list(0x5555564465e0, 24) = 0 [pid 936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 936] setpgid(0, 0) = 0 [pid 936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 936] write(3, "1000", 4) = 4 [pid 936] close(3) = 0 [pid 936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 936] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 936] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 937 attached , parent_tid=[937], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 937 [pid 937] set_robust_list(0x7fc84e09f9e0, 24 [pid 936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... set_robust_list resumed>) = 0 [pid 937] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 936] <... futex resumed>) = 1 [pid 937] <... futex resumed>) = 0 [pid 937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 937] <... futex resumed>) = 0 [pid 937] mount(NULL, "./file0", "ramfs", 0, NULL [pid 936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] <... mount resumed>) = 0 [pid 937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 937] <... futex resumed>) = 0 [pid 936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 936] <... futex resumed>) = 0 [pid 936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 936] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 937] umount2("./file0", MNT_DETACH [pid 936] <... mmap resumed>) = 0x7fc84e05e000 [pid 936] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 936] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 937] <... umount2 resumed>) = 0 [pid 936] <... clone resumed>, parent_tid=[938], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 938 [pid 937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 938 attached [pid 936] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 936] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] set_robust_list(0x7fc84e07e9e0, 24 [pid 937] <... futex resumed>) = 0 [pid 938] <... set_robust_list resumed>) = 0 [pid 937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 938] umount2("./file0", MNT_DETACH) = 0 [pid 938] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 936] <... futex resumed>) = 0 [pid 936] exit_group(0 [pid 937] <... futex resumed>) = ? [pid 937] +++ exited with 0 +++ [pid 936] <... exit_group resumed>) = ? [pid 938] +++ exited with 0 +++ [pid 936] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=936, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 939 ./strace-static-x86_64: Process 939 attached [pid 939] set_robust_list(0x5555564465e0, 24) = 0 [pid 939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 939] setpgid(0, 0) = 0 [pid 939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 939] write(3, "1000", 4) = 4 [pid 939] close(3) = 0 [pid 939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 939] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 939] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[940], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 940 [pid 939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 940 attached [pid 940] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 940] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = 0 [pid 939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] <... futex resumed>) = 1 [pid 940] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 939] <... futex resumed>) = 0 [pid 940] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] <... mount resumed>) = 0 [pid 940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 939] <... futex resumed>) = 0 [pid 939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 939] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 939] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[941], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 941 [pid 939] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 939] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 941 attached [pid 941] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 941] umount2("./file0", MNT_DETACH) = 0 [pid 940] umount2("./file0", MNT_DETACH [pid 941] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = 0 [pid 941] <... futex resumed>) = 1 [pid 941] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 940] <... umount2 resumed>) = 0 [pid 940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 940] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 939] exit_group(0) = ? [pid 940] <... futex resumed>) = ? [pid 941] <... futex resumed>) = ? [pid 941] +++ exited with 0 +++ [pid 940] +++ exited with 0 +++ [pid 939] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=939, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 942 ./strace-static-x86_64: Process 942 attached [pid 942] set_robust_list(0x5555564465e0, 24) = 0 [pid 942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 942] setpgid(0, 0) = 0 [pid 942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 942] write(3, "1000", 4) = 4 [pid 942] close(3) = 0 [pid 942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 942] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 942] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 943 attached [pid 943] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] <... clone resumed>, parent_tid=[943], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 943 [pid 942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 943] <... futex resumed>) = 0 [pid 943] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 943] <... futex resumed>) = 0 [pid 943] mount(NULL, "./file0", "ramfs", 0, NULL [pid 942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 943] <... mount resumed>) = 0 [pid 943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 942] <... futex resumed>) = 0 [pid 942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 943] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 942] <... futex resumed>) = 0 [pid 942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 943] <... mount resumed>) = 0 [pid 943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 942] <... futex resumed>) = 0 [pid 942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 942] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 942] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 943] umount2("./file0", MNT_DETACH [pid 942] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 943] <... umount2 resumed>) = 0 [pid 942] <... clone resumed>, parent_tid=[944], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 944 [pid 942] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 942] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 944 attached [pid 944] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 944] umount2("./file0", MNT_DETACH) = 0 [pid 944] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... futex resumed>) = 0 [pid 944] <... futex resumed>) = 1 [pid 943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 943] <... futex resumed>) = 0 [pid 943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] exit_group(0) = ? [pid 944] <... futex resumed>) = ? [pid 943] <... futex resumed>) = ? [pid 944] +++ exited with 0 +++ [pid 943] +++ exited with 0 +++ [pid 942] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=942, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 945 ./strace-static-x86_64: Process 945 attached [pid 945] set_robust_list(0x5555564465e0, 24) = 0 [pid 945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 945] setpgid(0, 0) = 0 [pid 945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 945] write(3, "1000", 4) = 4 [pid 945] close(3) = 0 [pid 945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 945] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 945] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 946 attached , parent_tid=[946], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 946 [pid 946] set_robust_list(0x7fc84e09f9e0, 24 [pid 945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] <... set_robust_list resumed>) = 0 [pid 945] <... futex resumed>) = 0 [pid 945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 945] <... futex resumed>) = 0 [pid 946] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 946] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 945] <... futex resumed>) = 0 [pid 945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 945] <... futex resumed>) = 0 [pid 946] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 945] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 945] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 945] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 945] <... clone resumed>, parent_tid=[947], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 947 [pid 945] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 945] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 947 attached [pid 947] set_robust_list(0x7fc84e07e9e0, 24 [pid 946] umount2("./file0", MNT_DETACH [pid 947] <... set_robust_list resumed>) = 0 [pid 947] umount2("./file0", MNT_DETACH [pid 946] <... umount2 resumed>) = 0 [pid 947] <... umount2 resumed>) = 0 [pid 946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] <... futex resumed>) = 0 [pid 946] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 945] <... futex resumed>) = 0 [pid 945] exit_group(0) = ? [pid 946] <... futex resumed>) = ? [pid 946] +++ exited with 0 +++ [pid 947] <... futex resumed>) = ? [pid 947] +++ exited with 0 +++ [pid 945] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=945, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 948 ./strace-static-x86_64: Process 948 attached [pid 948] set_robust_list(0x5555564465e0, 24) = 0 [pid 948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 948] setpgid(0, 0) = 0 [pid 948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 948] write(3, "1000", 4) = 4 [pid 948] close(3) = 0 [pid 948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 948] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 948] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[949], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 949 ./strace-static-x86_64: Process 949 attached [pid 948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 949] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 949] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] <... futex resumed>) = 0 [pid 948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 949] <... futex resumed>) = 0 [pid 949] mount(NULL, "./file0", "ramfs", 0, NULL [pid 948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 949] <... mount resumed>) = 0 [pid 949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 948] <... futex resumed>) = 0 [pid 949] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 949] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 948] <... futex resumed>) = 0 [pid 948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 949] <... mount resumed>) = 0 [pid 949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 948] <... futex resumed>) = 0 [pid 948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] umount2("./file0", MNT_DETACH [pid 948] <... futex resumed>) = 0 [pid 948] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 948] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 949] <... umount2 resumed>) = 0 [pid 948] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 949] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] <... clone resumed>, parent_tid=[950], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 950 ./strace-static-x86_64: Process 950 attached [pid 948] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 950] set_robust_list(0x7fc84e07e9e0, 24 [pid 948] <... futex resumed>) = 0 [pid 950] <... set_robust_list resumed>) = 0 [pid 948] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 950] umount2("./file0", MNT_DETACH) = 0 [pid 950] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 948] <... futex resumed>) = 0 [pid 950] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] exit_group(0) = ? [pid 949] <... futex resumed>) = ? [pid 949] +++ exited with 0 +++ [pid 950] <... futex resumed>) = ? [pid 950] +++ exited with 0 +++ [pid 948] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=948, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 951 ./strace-static-x86_64: Process 951 attached [pid 951] set_robust_list(0x5555564465e0, 24) = 0 [pid 951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 951] setpgid(0, 0) = 0 [pid 951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 951] write(3, "1000", 4) = 4 [pid 951] close(3) = 0 [pid 951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 951] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 951] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 951] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 952 attached , parent_tid=[952], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 952 [pid 952] set_robust_list(0x7fc84e09f9e0, 24 [pid 951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... set_robust_list resumed>) = 0 [pid 951] <... futex resumed>) = 0 [pid 951] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 951] <... futex resumed>) = 0 [pid 951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] mount(NULL, "./file0", "ramfs", 0, NULL [pid 951] <... futex resumed>) = 0 [pid 951] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] <... mount resumed>) = 0 [pid 952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 951] <... futex resumed>) = 0 [pid 951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 951] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 951] <... futex resumed>) = 0 [pid 951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 951] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 951] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 951] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 952] umount2("./file0", MNT_DETACH [pid 951] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[953], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 953 [pid 951] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 952] <... umount2 resumed>) = 0 [pid 951] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 953 attached [pid 953] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 953] umount2("./file0", MNT_DETACH [pid 952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 953] <... umount2 resumed>) = 0 [pid 952] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 953] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 951] <... futex resumed>) = 0 [pid 951] exit_group(0) = ? [pid 952] <... futex resumed>) = ? [pid 953] <... futex resumed>) = ? [pid 952] +++ exited with 0 +++ [pid 953] +++ exited with 0 +++ [pid 951] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=951, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 954 ./strace-static-x86_64: Process 954 attached [pid 954] set_robust_list(0x5555564465e0, 24) = 0 [pid 954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 954] setpgid(0, 0) = 0 [pid 954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 954] write(3, "1000", 4) = 4 [pid 954] close(3) = 0 [pid 954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 954] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 954] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 955 attached , parent_tid=[955], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 955 [pid 955] set_robust_list(0x7fc84e09f9e0, 24 [pid 954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... set_robust_list resumed>) = 0 [pid 954] <... futex resumed>) = 0 [pid 954] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 954] <... futex resumed>) = 0 [pid 955] mount(NULL, "./file0", "ramfs", 0, NULL [pid 954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 954] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] <... mount resumed>) = 0 [pid 955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 954] <... futex resumed>) = 0 [pid 954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 954] <... futex resumed>) = 0 [pid 954] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] <... mount resumed>) = 0 [pid 955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 954] <... futex resumed>) = 0 [pid 954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 954] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 955] umount2("./file0", MNT_DETACH [pid 954] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 954] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[956], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 956 [pid 954] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 955] <... umount2 resumed>) = 0 [pid 954] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 956 attached [pid 956] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 956] umount2("./file0", MNT_DETACH) = 0 [pid 955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... futex resumed>) = 0 [pid 954] exit_group(0) = ? [pid 956] <... futex resumed>) = ? [pid 956] +++ exited with 0 +++ [pid 955] <... futex resumed>) = ? [pid 955] +++ exited with 0 +++ [pid 954] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=954, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 957 ./strace-static-x86_64: Process 957 attached [pid 957] set_robust_list(0x5555564465e0, 24) = 0 [pid 957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 957] setpgid(0, 0) = 0 [pid 957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 957] write(3, "1000", 4) = 4 [pid 957] close(3) = 0 [pid 957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 957] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 957] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 957] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 958 attached , parent_tid=[958], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 958 [pid 958] set_robust_list(0x7fc84e09f9e0, 24 [pid 957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] <... set_robust_list resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 957] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 958] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... futex resumed>) = 0 [pid 958] <... futex resumed>) = 1 [pid 957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] mount(NULL, "./file0", "ramfs", 0, NULL [pid 957] <... futex resumed>) = 0 [pid 957] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 958] <... mount resumed>) = 0 [pid 958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... futex resumed>) = 0 [pid 958] <... futex resumed>) = 1 [pid 957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 957] <... futex resumed>) = 0 [pid 957] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 958] <... mount resumed>) = 0 [pid 958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 957] <... futex resumed>) = 0 [pid 958] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 957] <... futex resumed>) = 0 [pid 958] umount2("./file0", MNT_DETACH [pid 957] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 957] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 957] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 957] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 958] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 959 attached [pid 958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... clone resumed>, parent_tid=[959], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 959 [pid 959] set_robust_list(0x7fc84e07e9e0, 24 [pid 958] <... futex resumed>) = 0 [pid 959] <... set_robust_list resumed>) = 0 [pid 957] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 959] umount2("./file0", MNT_DETACH [pid 958] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 957] <... futex resumed>) = 0 [pid 957] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 959] <... umount2 resumed>) = 0 [pid 959] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 957] <... futex resumed>) = 0 [pid 959] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 957] exit_group(0 [pid 959] <... futex resumed>) = ? [pid 958] <... futex resumed>) = ? [pid 957] <... exit_group resumed>) = ? [pid 958] +++ exited with 0 +++ [pid 959] +++ exited with 0 +++ [pid 957] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=957, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 960 ./strace-static-x86_64: Process 960 attached [pid 960] set_robust_list(0x5555564465e0, 24) = 0 [pid 960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 960] setpgid(0, 0) = 0 [pid 960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 960] write(3, "1000", 4) = 4 [pid 960] close(3) = 0 [pid 960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 960] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 960] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 961 attached [pid 961] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 961] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] <... clone resumed>, parent_tid=[961], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 961 [pid 960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 961] <... futex resumed>) = 0 [pid 961] mkdir("./file0", 000 [pid 960] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 961] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] <... futex resumed>) = 0 [pid 960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 961] <... futex resumed>) = 0 [pid 960] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 960] <... futex resumed>) = 0 [pid 960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 960] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 960] <... futex resumed>) = 0 [pid 961] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] umount2("./file0", MNT_DETACH [pid 960] <... futex resumed>) = 0 [pid 960] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 960] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 960] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[962], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 962 [pid 960] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 960] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 962 attached [pid 961] <... umount2 resumed>) = 0 [pid 962] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 962] umount2("./file0", MNT_DETACH [pid 961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 961] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 962] <... umount2 resumed>) = 0 [pid 962] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 960] <... futex resumed>) = 0 [pid 962] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] exit_group(0 [pid 962] <... futex resumed>) = 231 [pid 960] <... exit_group resumed>) = ? [pid 961] <... futex resumed>) = ? [pid 962] +++ exited with 0 +++ [pid 961] +++ exited with 0 +++ [pid 960] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=960, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 963 ./strace-static-x86_64: Process 963 attached [pid 963] set_robust_list(0x5555564465e0, 24) = 0 [pid 963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 963] setpgid(0, 0) = 0 [pid 963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 963] write(3, "1000", 4) = 4 [pid 963] close(3) = 0 [pid 963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 963] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 963] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 963] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 964 attached , parent_tid=[964], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 964 [pid 964] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 964] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 964] <... futex resumed>) = 0 [pid 964] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 963] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 964] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] <... futex resumed>) = 0 [pid 963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 964] <... futex resumed>) = 0 [pid 964] mount(NULL, "./file0", "ramfs", 0, NULL [pid 963] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 964] <... mount resumed>) = 0 [pid 964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 964] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 964] <... futex resumed>) = 0 [pid 964] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 963] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 963] <... futex resumed>) = 0 [pid 963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 963] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 963] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 963] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 963] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 964] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 965 attached ) = 0 [pid 964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 964] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 965] set_robust_list(0x7fc84e07e9e0, 24 [pid 963] <... clone resumed>, parent_tid=[965], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 965 [pid 965] <... set_robust_list resumed>) = 0 [pid 963] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] umount2("./file0", MNT_DETACH [pid 963] <... futex resumed>) = 0 [pid 963] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 965] <... umount2 resumed>) = 0 [pid 965] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 963] <... futex resumed>) = 0 [pid 965] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] exit_group(0) = ? [pid 964] <... futex resumed>) = ? [pid 964] +++ exited with 0 +++ [pid 965] <... futex resumed>) = ? [pid 965] +++ exited with 0 +++ [pid 963] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=963, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 966 ./strace-static-x86_64: Process 966 attached [pid 966] set_robust_list(0x5555564465e0, 24) = 0 [pid 966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 966] setpgid(0, 0) = 0 [pid 966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 966] write(3, "1000", 4) = 4 [pid 966] close(3) = 0 [pid 966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 966] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 966] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 967 attached , parent_tid=[967], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 967 [pid 967] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 967] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 967] <... futex resumed>) = 0 [pid 967] mkdir("./file0", 000 [pid 966] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 967] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 966] <... futex resumed>) = 0 [pid 966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 966] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 967] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 966] <... futex resumed>) = 0 [pid 967] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 966] <... futex resumed>) = 0 [pid 967] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 966] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 967] <... mount resumed>) = 0 [pid 967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 967] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 966] <... futex resumed>) = 0 [pid 966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 966] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 966] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 966] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[968], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 968 ./strace-static-x86_64: Process 968 attached [pid 966] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] set_robust_list(0x7fc84e07e9e0, 24 [pid 966] <... futex resumed>) = 0 [pid 966] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 967] <... futex resumed>) = 0 [pid 967] umount2("./file0", MNT_DETACH [pid 968] <... set_robust_list resumed>) = 0 [pid 968] umount2("./file0", MNT_DETACH [pid 967] <... umount2 resumed>) = 0 [pid 967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 967] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 968] <... umount2 resumed>) = 0 [pid 968] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 966] <... futex resumed>) = 0 [pid 966] exit_group(0) = ? [pid 967] <... futex resumed>) = ? [pid 967] +++ exited with 0 +++ [pid 968] +++ exited with 0 +++ [pid 966] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=966, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 969 ./strace-static-x86_64: Process 969 attached [pid 969] set_robust_list(0x5555564465e0, 24) = 0 [pid 969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 969] setpgid(0, 0) = 0 [pid 969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 969] write(3, "1000", 4) = 4 [pid 969] close(3) = 0 [pid 969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 969] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 969] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 970 attached [pid 970] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] <... clone resumed>, parent_tid=[970], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 970 [pid 969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 970] <... futex resumed>) = 0 [pid 970] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 969] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 970] <... futex resumed>) = 0 [pid 969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] mount(NULL, "./file0", "ramfs", 0, NULL [pid 969] <... futex resumed>) = 0 [pid 969] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 970] <... mount resumed>) = 0 [pid 970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 969] <... futex resumed>) = 0 [pid 970] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 970] <... mount resumed>) = 0 [pid 970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 969] <... futex resumed>) = 0 [pid 970] umount2("./file0", MNT_DETACH [pid 969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 970] <... umount2 resumed>) = 0 [pid 970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 970] <... futex resumed>) = 0 [pid 969] <... mprotect resumed>) = 0 [pid 970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 971 attached [pid 971] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 971] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] <... clone resumed>, parent_tid=[971], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 971 [pid 969] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 971] <... futex resumed>) = 0 [pid 971] umount2("./file0", MNT_DETACH) = 0 [pid 969] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 971] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 971] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 969] exit_group(0) = ? [pid 970] <... futex resumed>) = ? [pid 971] <... futex resumed>) = ? [pid 970] +++ exited with 0 +++ [pid 971] +++ exited with 0 +++ [pid 969] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=969, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 972 ./strace-static-x86_64: Process 972 attached [pid 972] set_robust_list(0x5555564465e0, 24) = 0 [pid 972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 972] setpgid(0, 0) = 0 [pid 972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 972] write(3, "1000", 4) = 4 [pid 972] close(3) = 0 [pid 972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 972] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 972] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 973 attached , parent_tid=[973], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 973 [pid 973] set_robust_list(0x7fc84e09f9e0, 24 [pid 972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] <... set_robust_list resumed>) = 0 [pid 972] <... futex resumed>) = 0 [pid 972] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 973] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] <... futex resumed>) = 0 [pid 973] <... futex resumed>) = 1 [pid 972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] mount(NULL, "./file0", "ramfs", 0, NULL [pid 972] <... futex resumed>) = 0 [pid 972] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 973] <... mount resumed>) = 0 [pid 973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] <... futex resumed>) = 0 [pid 973] <... futex resumed>) = 1 [pid 972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 972] <... futex resumed>) = 0 [pid 972] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 973] <... mount resumed>) = 0 [pid 973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] <... futex resumed>) = 0 [pid 973] <... futex resumed>) = 1 [pid 972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] umount2("./file0", MNT_DETACH [pid 972] <... futex resumed>) = 0 [pid 972] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 972] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 973] <... umount2 resumed>) = 0 [pid 972] <... mprotect resumed>) = 0 [pid 973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 973] <... futex resumed>) = 0 ./strace-static-x86_64: Process 974 attached [pid 973] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] <... clone resumed>, parent_tid=[974], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 974 [pid 974] set_robust_list(0x7fc84e07e9e0, 24 [pid 972] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] <... set_robust_list resumed>) = 0 [pid 972] <... futex resumed>) = 0 [pid 974] umount2("./file0", MNT_DETACH [pid 972] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 974] <... umount2 resumed>) = 0 [pid 974] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 972] <... futex resumed>) = 0 [pid 974] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] exit_group(0) = ? [pid 973] <... futex resumed>) = 231 [pid 974] <... futex resumed>) = ? [pid 973] +++ exited with 0 +++ [pid 974] +++ exited with 0 +++ [pid 972] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=972, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 975 ./strace-static-x86_64: Process 975 attached [pid 975] set_robust_list(0x5555564465e0, 24) = 0 [pid 975] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 975] setpgid(0, 0) = 0 [pid 975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 975] write(3, "1000", 4) = 4 [pid 975] close(3) = 0 [pid 975] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 975] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 975] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 975] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 976 attached [pid 976] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] <... clone resumed>, parent_tid=[976], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 976 [pid 975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 976] <... futex resumed>) = 0 [pid 976] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 976] <... futex resumed>) = 0 [pid 976] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 976] <... futex resumed>) = 0 [pid 976] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] <... mount resumed>) = 0 [pid 976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 976] <... futex resumed>) = 0 [pid 976] umount2("./file0", MNT_DETACH) = 0 [pid 976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 976] <... futex resumed>) = 0 [pid 976] umount2("./file0", MNT_DETACH) = 0 [pid 975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] exit_group(0) = ? [pid 976] <... futex resumed>) = ? [pid 976] +++ exited with 0 +++ [pid 975] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=975, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 977 ./strace-static-x86_64: Process 977 attached [pid 977] set_robust_list(0x5555564465e0, 24) = 0 [pid 977] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 977] setpgid(0, 0) = 0 [pid 977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 977] write(3, "1000", 4) = 4 [pid 977] close(3) = 0 [pid 977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 977] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 977] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[978], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 978 [pid 977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 978 attached [pid 978] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 978] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... futex resumed>) = 0 [pid 977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 978] <... futex resumed>) = 1 [pid 978] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 977] <... futex resumed>) = 0 [pid 978] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 978] <... mount resumed>) = 0 [pid 978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 977] <... futex resumed>) = 0 [pid 978] umount2("./file0", MNT_DETACH [pid 977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 977] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 978] <... umount2 resumed>) = 0 [pid 977] <... mprotect resumed>) = 0 [pid 978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 979 attached [pid 978] <... futex resumed>) = 0 [pid 978] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 977] <... clone resumed>, parent_tid=[979], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 979 [pid 977] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 979] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 979] umount2("./file0", MNT_DETACH) = 0 [pid 979] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 977] <... futex resumed>) = 0 [pid 977] exit_group(0) = ? [pid 978] <... futex resumed>) = ? [pid 978] +++ exited with 0 +++ [pid 979] +++ exited with 0 +++ [pid 977] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=977, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 980 ./strace-static-x86_64: Process 980 attached [pid 980] set_robust_list(0x5555564465e0, 24) = 0 [pid 980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 980] setpgid(0, 0) = 0 [pid 980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 980] write(3, "1000", 4) = 4 [pid 980] close(3) = 0 [pid 980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 980] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 980] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 981 attached , parent_tid=[981], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 981 [pid 981] set_robust_list(0x7fc84e09f9e0, 24 [pid 980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] <... set_robust_list resumed>) = 0 [pid 980] <... futex resumed>) = 0 [pid 980] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 981] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = 0 [pid 981] <... futex resumed>) = 1 [pid 980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] mount(NULL, "./file0", "ramfs", 0, NULL [pid 980] <... futex resumed>) = 0 [pid 980] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 981] <... mount resumed>) = 0 [pid 981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = 0 [pid 981] <... futex resumed>) = 1 [pid 980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 980] <... futex resumed>) = 0 [pid 980] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 981] <... mount resumed>) = 0 [pid 981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = 0 [pid 981] <... futex resumed>) = 1 [pid 980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] umount2("./file0", MNT_DETACH [pid 980] <... futex resumed>) = 0 [pid 980] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 980] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 981] <... umount2 resumed>) = 0 [pid 980] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 980] <... clone resumed>, parent_tid=[982], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 982 ./strace-static-x86_64: Process 982 attached [pid 981] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 980] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] set_robust_list(0x7fc84e07e9e0, 24 [pid 980] <... futex resumed>) = 0 [pid 982] <... set_robust_list resumed>) = 0 [pid 980] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 982] umount2("./file0", MNT_DETACH) = 0 [pid 982] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = 1 [pid 980] exit_group(0 [pid 982] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 980] <... exit_group resumed>) = ? [pid 981] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 982] <... futex resumed>) = ? [pid 981] +++ exited with 0 +++ [pid 982] +++ exited with 0 +++ [pid 980] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=980, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 983 ./strace-static-x86_64: Process 983 attached [pid 983] set_robust_list(0x5555564465e0, 24) = 0 [pid 983] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 983] setpgid(0, 0) = 0 [pid 983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 983] write(3, "1000", 4) = 4 [pid 983] close(3) = 0 [pid 983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 983] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 983] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 983] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 984 attached [pid 984] set_robust_list(0x7fc84e09f9e0, 24 [pid 983] <... clone resumed>, parent_tid=[984], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 984 [pid 984] <... set_robust_list resumed>) = 0 [pid 983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 984] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 983] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 983] <... futex resumed>) = 0 [pid 983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 983] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 983] <... futex resumed>) = 0 [pid 984] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 983] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 984] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 983] <... futex resumed>) = 0 [pid 983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 983] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 983] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 983] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 983] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[985], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 985 [pid 983] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 983] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 985 attached [pid 985] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 985] umount2("./file0", MNT_DETACH [pid 984] umount2("./file0", MNT_DETACH [pid 985] <... umount2 resumed>) = 0 [pid 985] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... futex resumed>) = 0 [pid 985] <... futex resumed>) = 1 [pid 985] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 984] <... umount2 resumed>) = 0 [pid 984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 984] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 983] exit_group(0) = ? [pid 985] <... futex resumed>) = ? [pid 984] <... futex resumed>) = ? [pid 985] +++ exited with 0 +++ [pid 984] +++ exited with 0 +++ [pid 983] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=983, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 986 ./strace-static-x86_64: Process 986 attached [pid 986] set_robust_list(0x5555564465e0, 24) = 0 [pid 986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 986] setpgid(0, 0) = 0 [pid 986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 986] write(3, "1000", 4) = 4 [pid 986] close(3) = 0 [pid 986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 986] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 986] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 987 attached , parent_tid=[987], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 987 [pid 987] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 987] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 987] <... futex resumed>) = 0 [pid 987] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 986] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 987] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 987] <... futex resumed>) = 0 [pid 987] mount(NULL, "./file0", "ramfs", 0, NULL [pid 986] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 987] <... mount resumed>) = 0 [pid 987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 986] <... futex resumed>) = 0 [pid 987] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] <... mount resumed>) = 0 [pid 986] <... futex resumed>) = 0 [pid 986] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 986] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 987] umount2("./file0", MNT_DETACH [pid 986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 986] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] <... umount2 resumed>) = 0 [pid 986] <... futex resumed>) = 0 [pid 987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 987] <... futex resumed>) = 0 [pid 986] <... mmap resumed>) = 0x7fc84e05e000 [pid 987] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 986] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 988 attached [pid 988] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 988] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] <... clone resumed>, parent_tid=[988], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 988 [pid 986] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 988] <... futex resumed>) = 0 [pid 988] umount2("./file0", MNT_DETACH [pid 986] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 988] <... umount2 resumed>) = 0 [pid 988] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 988] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] <... futex resumed>) = 0 [pid 986] exit_group(0) = ? [pid 987] <... futex resumed>) = ? [pid 987] +++ exited with 0 +++ [pid 988] <... futex resumed>) = ? [pid 988] +++ exited with 0 +++ [pid 986] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=986, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 989 ./strace-static-x86_64: Process 989 attached [pid 989] set_robust_list(0x5555564465e0, 24) = 0 [pid 989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 989] setpgid(0, 0) = 0 [pid 989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 989] write(3, "1000", 4) = 4 [pid 989] close(3) = 0 [pid 989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 989] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 989] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 989] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 990 attached , parent_tid=[990], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 990 [pid 990] set_robust_list(0x7fc84e09f9e0, 24 [pid 989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] <... set_robust_list resumed>) = 0 [pid 989] <... futex resumed>) = 0 [pid 989] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 989] <... futex resumed>) = 0 [pid 990] <... futex resumed>) = 1 [pid 989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] mount(NULL, "./file0", "ramfs", 0, NULL [pid 989] <... futex resumed>) = 0 [pid 989] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] <... mount resumed>) = 0 [pid 990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 989] <... futex resumed>) = 0 [pid 990] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 989] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] <... mount resumed>) = 0 [pid 990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 989] <... futex resumed>) = 0 [pid 990] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] umount2("./file0", MNT_DETACH [pid 989] <... futex resumed>) = 0 [pid 989] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 989] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 989] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 989] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[991], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 991 [pid 990] <... umount2 resumed>) = 0 [pid 989] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 989] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 991 attached [pid 990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] set_robust_list(0x7fc84e07e9e0, 24 [pid 990] <... futex resumed>) = 0 [pid 991] <... set_robust_list resumed>) = 0 [pid 990] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 991] umount2("./file0", MNT_DETACH) = 0 [pid 991] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 989] <... futex resumed>) = 0 [pid 989] exit_group(0) = ? [pid 990] <... futex resumed>) = ? [pid 990] +++ exited with 0 +++ [pid 991] +++ exited with 0 +++ [pid 989] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=989, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 992 attached , child_tidptr=0x5555564465d0) = 992 [pid 992] set_robust_list(0x5555564465e0, 24) = 0 [pid 992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 992] setpgid(0, 0) = 0 [pid 992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 992] write(3, "1000", 4) = 4 [pid 992] close(3) = 0 [pid 992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 992] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 992] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[993], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 993 ./strace-static-x86_64: Process 993 attached [pid 993] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 993] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 993] <... futex resumed>) = 0 [pid 993] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 993] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 992] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 993] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 992] <... futex resumed>) = 0 [pid 993] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 992] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 993] <... mount resumed>) = 0 [pid 993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 992] <... futex resumed>) = 0 [pid 992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 992] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 992] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 992] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 993] umount2("./file0", MNT_DETACH [pid 992] <... clone resumed>, parent_tid=[994], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 994 [pid 992] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 992] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 994 attached [pid 994] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 994] umount2("./file0", MNT_DETACH) = 0 [pid 994] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = 0 [pid 994] <... futex resumed>) = 1 [pid 994] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 993] <... umount2 resumed>) = 0 [pid 993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 993] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 992] exit_group(0) = ? [pid 993] <... futex resumed>) = ? [pid 993] +++ exited with 0 +++ [pid 994] <... futex resumed>) = ? [pid 994] +++ exited with 0 +++ [pid 992] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=992, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 995 ./strace-static-x86_64: Process 995 attached [pid 995] set_robust_list(0x5555564465e0, 24) = 0 [pid 995] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 995] setpgid(0, 0) = 0 [pid 995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 995] write(3, "1000", 4) = 4 [pid 995] close(3) = 0 [pid 995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 995] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 995] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 995] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[996], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 996 [pid 995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 995] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 996 attached [pid 996] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 996] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = 0 [pid 995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 995] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 996] <... futex resumed>) = 1 [pid 996] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = 0 [pid 995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 995] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 996] <... futex resumed>) = 1 [pid 996] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = 0 [pid 996] <... futex resumed>) = 1 [pid 995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 996] umount2("./file0", MNT_DETACH [pid 995] <... futex resumed>) = 0 [pid 995] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 995] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 995] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 996] <... umount2 resumed>) = 0 [pid 995] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 997 attached ) = 0 [pid 995] <... clone resumed>, parent_tid=[997], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 997 [pid 997] set_robust_list(0x7fc84e07e9e0, 24 [pid 996] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 997] <... set_robust_list resumed>) = 0 [pid 995] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] umount2("./file0", MNT_DETACH [pid 995] <... futex resumed>) = 0 [pid 995] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 997] <... umount2 resumed>) = 0 [pid 997] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = 0 [pid 997] <... futex resumed>) = 1 [pid 997] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 995] exit_group(0) = ? [pid 996] <... futex resumed>) = 231 [pid 997] <... futex resumed>) = ? [pid 996] +++ exited with 0 +++ [pid 997] +++ exited with 0 +++ [pid 995] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=995, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 998 ./strace-static-x86_64: Process 998 attached [pid 998] set_robust_list(0x5555564465e0, 24) = 0 [pid 998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 998] setpgid(0, 0) = 0 [pid 998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 998] write(3, "1000", 4) = 4 [pid 998] close(3) = 0 [pid 998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 998] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 998] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 999 attached , parent_tid=[999], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 999 [pid 999] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 999] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 998] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 999] <... futex resumed>) = 0 [pid 999] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 999] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] <... futex resumed>) = 0 [pid 998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 998] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 999] <... futex resumed>) = 0 [pid 999] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 998] <... futex resumed>) = 0 [pid 998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 998] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 999] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 998] <... futex resumed>) = 0 [pid 998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 998] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 998] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 998] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 999] umount2("./file0", MNT_DETACH [pid 998] <... clone resumed>, parent_tid=[1000], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1000 [pid 999] <... umount2 resumed>) = 0 [pid 998] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 998] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1000 attached [pid 1000] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1000] umount2("./file0", MNT_DETACH [pid 999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... umount2 resumed>) = 0 [pid 999] <... futex resumed>) = 0 [pid 1000] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] <... futex resumed>) = 0 [pid 998] exit_group(0) = ? [pid 1000] <... futex resumed>) = ? [pid 1000] +++ exited with 0 +++ [pid 999] +++ exited with 0 +++ [pid 998] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=998, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1001 ./strace-static-x86_64: Process 1001 attached [pid 1001] set_robust_list(0x5555564465e0, 24) = 0 [pid 1001] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1001] setpgid(0, 0) = 0 [pid 1001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1001] write(3, "1000", 4) = 4 [pid 1001] close(3) = 0 [pid 1001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1001] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1001] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1001] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1002 attached , parent_tid=[1002], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1002 [pid 1002] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1002] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1002] mkdir("./file0", 000 [pid 1001] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1002] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1001] <... futex resumed>) = 0 [pid 1001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1002] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1001] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] <... mount resumed>) = 0 [pid 1002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1002] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1001] <... futex resumed>) = 0 [pid 1001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1002] <... futex resumed>) = 0 [pid 1001] <... futex resumed>) = 1 [pid 1002] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1001] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] <... mount resumed>) = 0 [pid 1002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1001] <... futex resumed>) = 0 [pid 1002] umount2("./file0", MNT_DETACH [pid 1001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1001] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1001] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1001] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1001] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1003], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1003 [pid 1002] <... umount2 resumed>) = 0 [pid 1001] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... futex resumed>) = 0 [pid 1002] <... futex resumed>) = 0 [pid 1001] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1003 attached [pid 1003] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1003] umount2("./file0", MNT_DETACH) = 0 [pid 1003] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1001] <... futex resumed>) = 0 [pid 1001] exit_group(0) = ? [pid 1002] <... futex resumed>) = ? [pid 1002] +++ exited with 0 +++ [pid 1003] +++ exited with 0 +++ [pid 1001] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1001, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1004 ./strace-static-x86_64: Process 1004 attached [pid 1004] set_robust_list(0x5555564465e0, 24) = 0 [pid 1004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1004] setpgid(0, 0) = 0 [pid 1004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1004] write(3, "1000", 4) = 4 [pid 1004] close(3) = 0 [pid 1004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1004] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1004] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1005 attached , parent_tid=[1005], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1005 [pid 1004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] set_robust_list(0x7fc84e09f9e0, 24 [pid 1004] <... futex resumed>) = 0 [pid 1005] <... set_robust_list resumed>) = 0 [pid 1004] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1005] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] <... futex resumed>) = 0 [pid 1005] <... futex resumed>) = 1 [pid 1004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1004] <... futex resumed>) = 0 [pid 1004] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1005] <... mount resumed>) = 0 [pid 1005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] <... futex resumed>) = 0 [pid 1005] <... futex resumed>) = 1 [pid 1004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1004] <... futex resumed>) = 0 [pid 1004] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1005] <... mount resumed>) = 0 [pid 1005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1004] <... futex resumed>) = 0 [pid 1004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1004] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1004] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1004] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1006 attached , parent_tid=[1006], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1006 [pid 1004] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] set_robust_list(0x7fc84e07e9e0, 24 [pid 1004] <... futex resumed>) = 0 [pid 1006] <... set_robust_list resumed>) = 0 [pid 1004] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1006] umount2("./file0", MNT_DETACH) = 0 [pid 1005] umount2("./file0", MNT_DETACH [pid 1006] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1004] <... futex resumed>) = 0 [pid 1006] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1005] <... umount2 resumed>) = 0 [pid 1005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1005] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1004] exit_group(0) = ? [pid 1005] <... futex resumed>) = ? [pid 1006] <... futex resumed>) = ? [pid 1005] +++ exited with 0 +++ [pid 1006] +++ exited with 0 +++ [pid 1004] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1004, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1007 ./strace-static-x86_64: Process 1007 attached [pid 1007] set_robust_list(0x5555564465e0, 24) = 0 [pid 1007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1007] setpgid(0, 0) = 0 [pid 1007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1007] write(3, "1000", 4) = 4 [pid 1007] close(3) = 0 [pid 1007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1007] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1007] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1007] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1008], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1008 [pid 1007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1007] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1008 attached [pid 1008] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1008] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] <... futex resumed>) = 0 [pid 1007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1007] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1008] <... futex resumed>) = 1 [pid 1008] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] <... futex resumed>) = 0 [pid 1007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1007] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1008] <... futex resumed>) = 1 [pid 1008] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] <... futex resumed>) = 0 [pid 1008] <... futex resumed>) = 1 [pid 1007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] umount2("./file0", MNT_DETACH [pid 1007] <... futex resumed>) = 0 [pid 1007] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1007] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1007] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1008] <... umount2 resumed>) = 0 [pid 1007] <... mprotect resumed>) = 0 [pid 1008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1008] <... futex resumed>) = 0 [pid 1007] <... clone resumed>, parent_tid=[1009], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1009 [pid 1007] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1007] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1008] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1009 attached [pid 1009] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1009] umount2("./file0", MNT_DETACH) = 0 [pid 1009] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1007] <... futex resumed>) = 0 [pid 1007] exit_group(0) = ? [pid 1008] <... futex resumed>) = ? [pid 1008] +++ exited with 0 +++ [pid 1009] +++ exited with 0 +++ [pid 1007] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1007, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1010 ./strace-static-x86_64: Process 1010 attached [pid 1010] set_robust_list(0x5555564465e0, 24) = 0 [pid 1010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1010] setpgid(0, 0) = 0 [pid 1010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1010] write(3, "1000", 4) = 4 [pid 1010] close(3) = 0 [pid 1010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1010] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1010] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1011 attached , parent_tid=[1011], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1011 [pid 1011] set_robust_list(0x7fc84e09f9e0, 24 [pid 1010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... set_robust_list resumed>) = 0 [pid 1010] <... futex resumed>) = 0 [pid 1010] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = 0 [pid 1011] <... futex resumed>) = 1 [pid 1011] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1010] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... mount resumed>) = 0 [pid 1011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = 0 [pid 1011] <... futex resumed>) = 1 [pid 1010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1011] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1010] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... mount resumed>) = 0 [pid 1011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = 0 [pid 1011] <... futex resumed>) = 1 [pid 1010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] umount2("./file0", MNT_DETACH [pid 1010] <... futex resumed>) = 0 [pid 1010] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1010] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1010] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1011] <... umount2 resumed>) = 0 [pid 1011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1012 attached ) = 0 [pid 1010] <... clone resumed>, parent_tid=[1012], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1012 [pid 1012] set_robust_list(0x7fc84e07e9e0, 24 [pid 1011] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1012] <... set_robust_list resumed>) = 0 [pid 1010] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] umount2("./file0", MNT_DETACH [pid 1010] <... futex resumed>) = 0 [pid 1010] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1012] <... umount2 resumed>) = 0 [pid 1012] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1010] <... futex resumed>) = 0 [pid 1012] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1010] exit_group(0 [pid 1012] <... futex resumed>) = ? [pid 1011] <... futex resumed>) = ? [pid 1010] <... exit_group resumed>) = ? [pid 1011] +++ exited with 0 +++ [pid 1012] +++ exited with 0 +++ [pid 1010] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1010, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1013 ./strace-static-x86_64: Process 1013 attached [pid 1013] set_robust_list(0x5555564465e0, 24) = 0 [pid 1013] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1013] setpgid(0, 0) = 0 [pid 1013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1013] write(3, "1000", 4) = 4 [pid 1013] close(3) = 0 [pid 1013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1013] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1013] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1013] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1014 attached [pid 1014] set_robust_list(0x7fc84e09f9e0, 24 [pid 1013] <... clone resumed>, parent_tid=[1014], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1014 [pid 1014] <... set_robust_list resumed>) = 0 [pid 1014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1014] <... futex resumed>) = 0 [pid 1014] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1013] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1014] <... futex resumed>) = 0 [pid 1013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1013] <... futex resumed>) = 1 [pid 1014] <... futex resumed>) = 0 [pid 1014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1013] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1014] <... futex resumed>) = 0 [pid 1014] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1013] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1014] <... mount resumed>) = 0 [pid 1014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1013] <... futex resumed>) = 0 [pid 1013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] <... futex resumed>) = 0 [pid 1013] <... futex resumed>) = 1 [pid 1014] umount2("./file0", MNT_DETACH [pid 1013] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1013] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1013] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1013] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1014] <... umount2 resumed>) = 0 [pid 1014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1013] <... clone resumed>, parent_tid=[1015], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1015 [pid 1014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1013] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1013] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1015 attached [pid 1015] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1015] umount2("./file0", MNT_DETACH) = 0 [pid 1015] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1015] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1013] <... futex resumed>) = 0 [pid 1013] exit_group(0) = ? [pid 1014] <... futex resumed>) = ? [pid 1014] +++ exited with 0 +++ [pid 1015] <... futex resumed>) = ? [pid 1015] +++ exited with 0 +++ [pid 1013] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1013, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1016 ./strace-static-x86_64: Process 1016 attached [pid 1016] set_robust_list(0x5555564465e0, 24) = 0 [pid 1016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1016] setpgid(0, 0) = 0 [pid 1016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1016] write(3, "1000", 4) = 4 [pid 1016] close(3) = 0 [pid 1016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1016] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1016] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1017 attached , parent_tid=[1017], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1017 [pid 1017] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1017] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1017] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1017] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1017] <... mount resumed>) = 0 [pid 1017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1017] umount2("./file0", MNT_DETACH) = 0 [pid 1017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1017] umount2("./file0", MNT_DETACH) = 0 [pid 1017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] exit_group(0) = ? [pid 1017] <... futex resumed>) = ? [pid 1017] +++ exited with 0 +++ [pid 1016] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1016, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1018 ./strace-static-x86_64: Process 1018 attached [pid 1018] set_robust_list(0x5555564465e0, 24) = 0 [pid 1018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1018] setpgid(0, 0) = 0 [pid 1018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1018] write(3, "1000", 4) = 4 [pid 1018] close(3) = 0 [pid 1018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1018] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1018] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1019 attached , parent_tid=[1019], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1019 [pid 1019] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1019] <... futex resumed>) = 0 [pid 1019] mkdir("./file0", 000 [pid 1018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1019] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1018] <... futex resumed>) = 0 [pid 1018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1019] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1018] <... futex resumed>) = 0 [pid 1018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1019] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1018] <... futex resumed>) = 0 [pid 1018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1018] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1018] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1018] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1020], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1020 [pid 1019] umount2("./file0", MNT_DETACH [pid 1018] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1018] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1020 attached [pid 1020] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1020] umount2("./file0", MNT_DETACH [pid 1019] <... umount2 resumed>) = 0 [pid 1019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] <... umount2 resumed>) = 0 [pid 1020] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... futex resumed>) = 0 [pid 1018] exit_group(0) = ? [pid 1020] <... futex resumed>) = ? [pid 1020] +++ exited with 0 +++ [pid 1019] <... futex resumed>) = ? [pid 1019] +++ exited with 0 +++ [pid 1018] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1018, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1021 ./strace-static-x86_64: Process 1021 attached [pid 1021] set_robust_list(0x5555564465e0, 24) = 0 [pid 1021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1021] setpgid(0, 0) = 0 [pid 1021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1021] write(3, "1000", 4) = 4 [pid 1021] close(3) = 0 [pid 1021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1021] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1021] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1021] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1022 attached [pid 1022] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1021] <... clone resumed>, parent_tid=[1022], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1022 [pid 1021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1022] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1021] <... futex resumed>) = 0 [pid 1021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1022] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1022] <... mount resumed>) = 0 [pid 1022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1021] <... futex resumed>) = 0 [pid 1021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1022] <... futex resumed>) = 0 [pid 1021] <... futex resumed>) = 1 [pid 1022] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1022] <... mount resumed>) = 0 [pid 1022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1021] <... futex resumed>) = 0 [pid 1021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1022] umount2("./file0", MNT_DETACH [pid 1021] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1021] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1021] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1022] <... umount2 resumed>) = 0 [pid 1021] <... mprotect resumed>) = 0 [pid 1022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1022] <... futex resumed>) = 0 [pid 1022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1024 attached [pid 1024] set_robust_list(0x7fc84e07e9e0, 24 [pid 1021] <... clone resumed>, parent_tid=[1024], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1024 [pid 1024] <... set_robust_list resumed>) = 0 [pid 1021] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] umount2("./file0", MNT_DETACH [pid 1021] <... futex resumed>) = 0 [pid 1021] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1024] <... umount2 resumed>) = 0 [pid 1024] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1021] <... futex resumed>) = 0 [pid 1024] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1021] exit_group(0 [pid 1022] <... futex resumed>) = ? [pid 1021] <... exit_group resumed>) = ? [pid 1022] +++ exited with 0 +++ [pid 1024] <... futex resumed>) = ? [pid 1024] +++ exited with 0 +++ [pid 1021] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1021, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1025 attached , child_tidptr=0x5555564465d0) = 1025 [pid 1025] set_robust_list(0x5555564465e0, 24) = 0 [pid 1025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1025] setpgid(0, 0) = 0 [pid 1025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1025] write(3, "1000", 4) = 4 [pid 1025] close(3) = 0 [pid 1025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1025] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1025] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1026], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1026 [pid 1025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1025] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1026 attached [pid 1026] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1026] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1025] <... futex resumed>) = 0 [pid 1025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1025] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1026] <... futex resumed>) = 1 [pid 1026] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1025] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1026] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1025] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1025] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1025] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1027 attached , parent_tid=[1027], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1027 [pid 1027] set_robust_list(0x7fc84e07e9e0, 24 [pid 1025] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] <... set_robust_list resumed>) = 0 [pid 1025] <... futex resumed>) = 0 [pid 1027] umount2("./file0", MNT_DETACH [pid 1025] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1026] umount2("./file0", MNT_DETACH [pid 1027] <... umount2 resumed>) = 0 [pid 1026] <... umount2 resumed>) = 0 [pid 1027] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1027] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1026] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] exit_group(0) = ? [pid 1027] <... futex resumed>) = ? [pid 1026] <... futex resumed>) = ? [pid 1027] +++ exited with 0 +++ [pid 1026] +++ exited with 0 +++ [pid 1025] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1025, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1028 attached , child_tidptr=0x5555564465d0) = 1028 [pid 1028] set_robust_list(0x5555564465e0, 24) = 0 [pid 1028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1028] setpgid(0, 0) = 0 [pid 1028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1028] write(3, "1000", 4) = 4 [pid 1028] close(3) = 0 [pid 1028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1028] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1028] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1029 attached , parent_tid=[1029], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1029 [pid 1029] set_robust_list(0x7fc84e09f9e0, 24 [pid 1028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... set_robust_list resumed>) = 0 [pid 1028] <... futex resumed>) = 0 [pid 1028] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1028] <... futex resumed>) = 0 [pid 1029] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] <... futex resumed>) = 0 [pid 1029] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1028] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] <... mount resumed>) = 0 [pid 1029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1028] <... futex resumed>) = 0 [pid 1029] <... futex resumed>) = 1 [pid 1028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1028] <... futex resumed>) = 0 [pid 1028] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] <... mount resumed>) = 0 [pid 1029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1028] <... futex resumed>) = 0 [pid 1028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1028] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] umount2("./file0", MNT_DETACH [pid 1028] <... futex resumed>) = 0 [pid 1028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1028] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1029] <... umount2 resumed>) = 0 [pid 1028] <... mprotect resumed>) = 0 [pid 1028] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1030 attached [pid 1029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1028] <... clone resumed>, parent_tid=[1030], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1030 [pid 1028] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1028] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1030] set_robust_list(0x7fc84e07e9e0, 24 [pid 1029] <... futex resumed>) = 0 [pid 1030] <... set_robust_list resumed>) = 0 [pid 1029] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1030] umount2("./file0", MNT_DETACH) = 0 [pid 1030] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1028] <... futex resumed>) = 0 [pid 1028] exit_group(0) = ? [pid 1029] <... futex resumed>) = ? [pid 1029] +++ exited with 0 +++ [pid 1030] +++ exited with 0 +++ [pid 1028] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1028, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1031 ./strace-static-x86_64: Process 1031 attached [pid 1031] set_robust_list(0x5555564465e0, 24) = 0 [pid 1031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1031] setpgid(0, 0) = 0 [pid 1031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1031] write(3, "1000", 4) = 4 [pid 1031] close(3) = 0 [pid 1031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1031] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1031] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1031] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1032 attached [pid 1032] set_robust_list(0x7fc84e09f9e0, 24 [pid 1031] <... clone resumed>, parent_tid=[1032], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1032 [pid 1032] <... set_robust_list resumed>) = 0 [pid 1032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1032] <... futex resumed>) = 0 [pid 1032] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1032] <... futex resumed>) = 0 [pid 1032] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1031] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1032] <... futex resumed>) = 0 [pid 1032] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1031] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1032] <... mount resumed>) = 0 [pid 1032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1032] <... futex resumed>) = 0 [pid 1031] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] umount2("./file0", MNT_DETACH [pid 1031] <... futex resumed>) = 0 [pid 1031] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1032] <... umount2 resumed>) = 0 [pid 1032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... mmap resumed>) = 0x7fc84e05e000 [pid 1031] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1031] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1033 attached , parent_tid=[1033], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1033 [pid 1033] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1033] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1033] <... futex resumed>) = 0 [pid 1033] umount2("./file0", MNT_DETACH [pid 1031] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... umount2 resumed>) = 0 [pid 1033] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1031] <... futex resumed>) = 0 [pid 1031] exit_group(0) = ? [pid 1032] <... futex resumed>) = ? [pid 1032] +++ exited with 0 +++ [pid 1033] +++ exited with 0 +++ [pid 1031] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1031, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1034 ./strace-static-x86_64: Process 1034 attached [pid 1034] set_robust_list(0x5555564465e0, 24) = 0 [pid 1034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1034] setpgid(0, 0) = 0 [pid 1034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1034] write(3, "1000", 4) = 4 [pid 1034] close(3) = 0 [pid 1034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1034] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1034] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1035 attached , parent_tid=[1035], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1035 [pid 1035] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1035] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1035] <... futex resumed>) = 0 [pid 1034] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1035] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1035] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1035] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1034] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1034] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1035] umount2("./file0", MNT_DETACH [pid 1034] <... clone resumed>, parent_tid=[1036], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1036 [pid 1034] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1036 attached [pid 1036] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1036] umount2("./file0", MNT_DETACH) = 0 [pid 1035] <... umount2 resumed>) = 0 [pid 1036] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1036] <... futex resumed>) = 1 [pid 1036] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1035] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1034] exit_group(0) = ? [pid 1036] <... futex resumed>) = ? [pid 1035] <... futex resumed>) = ? [pid 1036] +++ exited with 0 +++ [pid 1035] +++ exited with 0 +++ [pid 1034] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1034, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1037 ./strace-static-x86_64: Process 1037 attached [pid 1037] set_robust_list(0x5555564465e0, 24) = 0 [pid 1037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1037] setpgid(0, 0) = 0 [pid 1037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1037] write(3, "1000", 4) = 4 [pid 1037] close(3) = 0 [pid 1037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1037] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1037] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1037] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1038 attached [pid 1038] set_robust_list(0x7fc84e09f9e0, 24 [pid 1037] <... clone resumed>, parent_tid=[1038], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1038 [pid 1038] <... set_robust_list resumed>) = 0 [pid 1037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] mkdir("./file0", 000 [pid 1037] <... futex resumed>) = 0 [pid 1037] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] <... futex resumed>) = 0 [pid 1038] <... futex resumed>) = 1 [pid 1037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1037] <... futex resumed>) = 0 [pid 1037] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] <... mount resumed>) = 0 [pid 1038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] <... futex resumed>) = 0 [pid 1038] <... futex resumed>) = 1 [pid 1037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1038] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1037] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] <... mount resumed>) = 0 [pid 1038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] <... futex resumed>) = 0 [pid 1037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1037] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1037] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1037] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1037] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1039], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1039 [pid 1037] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1037] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] <... futex resumed>) = 1 [pid 1038] umount2("./file0", MNT_DETACH) = 0 [pid 1038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1038] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1039 attached [pid 1039] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1039] umount2("./file0", MNT_DETACH) = 0 [pid 1039] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1037] <... futex resumed>) = 0 [pid 1037] exit_group(0) = ? [pid 1038] <... futex resumed>) = ? [pid 1038] +++ exited with 0 +++ [pid 1039] +++ exited with 0 +++ [pid 1037] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1037, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1040 ./strace-static-x86_64: Process 1040 attached [pid 1040] set_robust_list(0x5555564465e0, 24) = 0 [pid 1040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1040] setpgid(0, 0) = 0 [pid 1040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1040] write(3, "1000", 4) = 4 [pid 1040] close(3) = 0 [pid 1040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1040] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1040] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1041 attached , parent_tid=[1041], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1041 [pid 1041] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1041] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1041] <... futex resumed>) = 0 [pid 1041] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1041] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1041] <... futex resumed>) = 0 [pid 1041] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1040] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] <... mount resumed>) = 0 [pid 1041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1040] <... futex resumed>) = 0 [pid 1040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1040] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1040] <... futex resumed>) = 0 [pid 1040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1040] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1041] umount2("./file0", MNT_DETACH [pid 1040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1040] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1041] <... umount2 resumed>) = 0 [pid 1041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... mprotect resumed>) = 0 [pid 1040] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1041] <... futex resumed>) = 0 [pid 1041] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] <... clone resumed>, parent_tid=[1042], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1042 [pid 1040] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1040] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1042 attached [pid 1042] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1042] umount2("./file0", MNT_DETACH) = 0 [pid 1042] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... futex resumed>) = 0 [pid 1042] <... futex resumed>) = 1 [pid 1042] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] exit_group(0) = ? [pid 1042] <... futex resumed>) = ? [pid 1042] +++ exited with 0 +++ [pid 1041] <... futex resumed>) = ? [pid 1041] +++ exited with 0 +++ [pid 1040] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1040, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1043 ./strace-static-x86_64: Process 1043 attached [pid 1043] set_robust_list(0x5555564465e0, 24) = 0 [pid 1043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1043] setpgid(0, 0) = 0 [pid 1043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1043] write(3, "1000", 4) = 4 [pid 1043] close(3) = 0 [pid 1043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1043] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1043] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1043] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1044 attached [pid 1044] set_robust_list(0x7fc84e09f9e0, 24 [pid 1043] <... clone resumed>, parent_tid=[1044], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1044 [pid 1044] <... set_robust_list resumed>) = 0 [pid 1044] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1044] <... futex resumed>) = 0 [pid 1044] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1043] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1044] <... futex resumed>) = 0 [pid 1044] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1043] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] <... mount resumed>) = 0 [pid 1044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1044] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1043] <... futex resumed>) = 0 [pid 1043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1044] <... futex resumed>) = 0 [pid 1043] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1043] <... futex resumed>) = 0 [pid 1044] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1043] <... futex resumed>) = 0 [pid 1044] umount2("./file0", MNT_DETACH [pid 1043] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1044] <... umount2 resumed>) = 0 [pid 1043] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1043] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1044] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1045 attached [pid 1045] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1045] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1044] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1043] <... clone resumed>, parent_tid=[1045], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1045 [pid 1043] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1045] <... futex resumed>) = 0 [pid 1043] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1045] umount2("./file0", MNT_DETACH) = 0 [pid 1045] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] <... futex resumed>) = 0 [pid 1045] <... futex resumed>) = 1 [pid 1043] exit_group(0 [pid 1045] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 1043] <... exit_group resumed>) = ? [pid 1044] <... futex resumed>) = ? [pid 1044] +++ exited with 0 +++ [pid 1045] +++ exited with 0 +++ [pid 1043] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1043, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1046 ./strace-static-x86_64: Process 1046 attached [pid 1046] set_robust_list(0x5555564465e0, 24) = 0 [pid 1046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1046] setpgid(0, 0) = 0 [pid 1046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1046] write(3, "1000", 4) = 4 [pid 1046] close(3) = 0 [pid 1046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1046] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1046] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1047], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1047 [pid 1046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1047 attached [pid 1047] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1047] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] <... futex resumed>) = 0 [pid 1046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1047] <... futex resumed>) = 1 [pid 1047] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] <... futex resumed>) = 0 [pid 1046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1047] <... futex resumed>) = 1 [pid 1047] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1046] <... futex resumed>) = 0 [pid 1046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1046] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1046] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1047] umount2("./file0", MNT_DETACH [pid 1046] <... clone resumed>, parent_tid=[1048], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1048 [pid 1046] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1047] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1048 attached [pid 1048] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1048] umount2("./file0", MNT_DETACH [pid 1047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1047] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1048] <... umount2 resumed>) = 0 [pid 1048] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] <... futex resumed>) = 0 [pid 1046] exit_group(0 [pid 1048] <... futex resumed>) = ? [pid 1047] <... futex resumed>) = ? [pid 1046] <... exit_group resumed>) = ? [pid 1048] +++ exited with 0 +++ [pid 1047] +++ exited with 0 +++ [pid 1046] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1046, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1049 ./strace-static-x86_64: Process 1049 attached [pid 1049] set_robust_list(0x5555564465e0, 24) = 0 [pid 1049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1049] setpgid(0, 0) = 0 [pid 1049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1049] write(3, "1000", 4) = 4 [pid 1049] close(3) = 0 [pid 1049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1049] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1049] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1049] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1050 attached , parent_tid=[1050], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1050 [pid 1050] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1050] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1050] <... futex resumed>) = 0 [pid 1050] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1049] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1050] <... futex resumed>) = 0 [pid 1050] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1050] <... futex resumed>) = 0 [pid 1050] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1049] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1050] <... mount resumed>) = 0 [pid 1050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1050] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] <... futex resumed>) = 0 [pid 1049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1050] <... futex resumed>) = 0 [pid 1049] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1050] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1049] <... futex resumed>) = 0 [pid 1050] umount2("./file0", MNT_DETACH [pid 1049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1049] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1049] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1049] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1050] <... umount2 resumed>) = 0 [pid 1049] <... mprotect resumed>) = 0 [pid 1050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1051 attached [pid 1050] <... futex resumed>) = 0 [pid 1051] set_robust_list(0x7fc84e07e9e0, 24 [pid 1050] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] <... clone resumed>, parent_tid=[1051], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1051 [pid 1051] <... set_robust_list resumed>) = 0 [pid 1049] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1051] umount2("./file0", MNT_DETACH [pid 1049] <... futex resumed>) = 0 [pid 1049] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1051] <... umount2 resumed>) = 0 [pid 1051] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1049] <... futex resumed>) = 0 [pid 1051] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] exit_group(0 [pid 1050] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 1049] <... exit_group resumed>) = ? [pid 1050] +++ exited with 0 +++ [pid 1051] <... futex resumed>) = ? [pid 1051] +++ exited with 0 +++ [pid 1049] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1049, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1052 ./strace-static-x86_64: Process 1052 attached [pid 1052] set_robust_list(0x5555564465e0, 24) = 0 [pid 1052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1052] setpgid(0, 0) = 0 [pid 1052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1052] write(3, "1000", 4) = 4 [pid 1052] close(3) = 0 [pid 1052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1052] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1052] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1053 attached [pid 1053] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1053] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1052] <... clone resumed>, parent_tid=[1053], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1053 [pid 1052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1053] <... futex resumed>) = 0 [pid 1053] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1053] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1052] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1053] <... futex resumed>) = 0 [pid 1053] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1052] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1053] <... mount resumed>) = 0 [pid 1053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1052] <... futex resumed>) = 0 [pid 1052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1052] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1053] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1052] <... futex resumed>) = 0 [pid 1052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1052] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1053] umount2("./file0", MNT_DETACH [pid 1052] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1053] <... umount2 resumed>) = 0 [pid 1052] <... mprotect resumed>) = 0 [pid 1052] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... clone resumed>, parent_tid=[1054], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1054 [pid 1052] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1052] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1054 attached [pid 1054] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1054] umount2("./file0", MNT_DETACH) = 0 [pid 1053] <... futex resumed>) = 0 [pid 1054] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... futex resumed>) = 0 [pid 1052] exit_group(0) = ? [pid 1054] <... futex resumed>) = ? [pid 1053] +++ exited with 0 +++ [pid 1054] +++ exited with 0 +++ [pid 1052] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1052, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1055 ./strace-static-x86_64: Process 1055 attached [pid 1055] set_robust_list(0x5555564465e0, 24) = 0 [pid 1055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1055] setpgid(0, 0) = 0 [pid 1055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1055] write(3, "1000", 4) = 4 [pid 1055] close(3) = 0 [pid 1055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1055] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1055] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1055] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1056 attached , parent_tid=[1056], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1056 [pid 1056] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] <... futex resumed>) = 0 [pid 1055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] <... futex resumed>) = 0 [pid 1055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1055] <... futex resumed>) = 0 [pid 1055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1056] umount2("./file0", MNT_DETACH [pid 1055] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1055] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1055] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1055] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1056] <... umount2 resumed>) = 0 [pid 1056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1055] <... clone resumed>, parent_tid=[1057], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1057 [pid 1056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1057 attached [pid 1055] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1057] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1057] umount2("./file0", MNT_DETACH) = 0 [pid 1057] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1057] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] <... futex resumed>) = 0 [pid 1055] exit_group(0) = ? [pid 1056] <... futex resumed>) = ? [pid 1056] +++ exited with 0 +++ [pid 1057] <... futex resumed>) = ? [pid 1057] +++ exited with 0 +++ [pid 1055] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1055, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1058 ./strace-static-x86_64: Process 1058 attached [pid 1058] set_robust_list(0x5555564465e0, 24) = 0 [pid 1058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1058] setpgid(0, 0) = 0 [pid 1058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1058] write(3, "1000", 4) = 4 [pid 1058] close(3) = 0 [pid 1058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1058] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1058] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1059 attached , parent_tid=[1059], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1059 [pid 1059] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1059] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1059] <... futex resumed>) = 0 [pid 1059] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1059] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1059] <... futex resumed>) = 0 [pid 1058] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1059] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1059] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] <... futex resumed>) = 0 [pid 1058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... futex resumed>) = 0 [pid 1058] <... futex resumed>) = 1 [pid 1059] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1058] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1059] <... mount resumed>) = 0 [pid 1059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1059] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] <... futex resumed>) = 0 [pid 1058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1058] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] umount2("./file0", MNT_DETACH [pid 1058] <... futex resumed>) = 0 [pid 1058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1058] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1059] <... umount2 resumed>) = 0 [pid 1058] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1058] <... clone resumed>, parent_tid=[1060], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1060 [pid 1059] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1060 attached ) = 0 [pid 1058] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1060] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1060] umount2("./file0", MNT_DETACH) = 0 [pid 1060] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1060] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] <... futex resumed>) = 0 [pid 1058] exit_group(0) = ? [pid 1059] <... futex resumed>) = ? [pid 1059] +++ exited with 0 +++ [pid 1060] <... futex resumed>) = ? [pid 1060] +++ exited with 0 +++ [pid 1058] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1058, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1061 ./strace-static-x86_64: Process 1061 attached [pid 1061] set_robust_list(0x5555564465e0, 24) = 0 [pid 1061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1061] setpgid(0, 0) = 0 [pid 1061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1061] write(3, "1000", 4) = 4 [pid 1061] close(3) = 0 [pid 1061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1061] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1061] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1061] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1062 attached , parent_tid=[1062], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1062 [pid 1062] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1061] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1062] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1062] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1061] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1062] <... mount resumed>) = 0 [pid 1062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1061] <... futex resumed>) = 0 [pid 1061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1062] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1061] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1062] <... mount resumed>) = 0 [pid 1062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1061] <... futex resumed>) = 0 [pid 1061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] umount2("./file0", MNT_DETACH [pid 1061] <... futex resumed>) = 0 [pid 1061] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1061] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1061] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1061] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1062] <... umount2 resumed>) = 0 [pid 1062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] <... clone resumed>, parent_tid=[1063], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1063 [pid 1061] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] <... futex resumed>) = 0 [pid 1061] <... futex resumed>) = 0 [pid 1061] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1063 attached [pid 1063] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1063] umount2("./file0", MNT_DETACH) = 0 [pid 1063] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1061] <... futex resumed>) = 0 [pid 1061] exit_group(0 [pid 1063] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 1062] <... futex resumed>) = ? [pid 1062] +++ exited with 0 +++ [pid 1061] <... exit_group resumed>) = ? [pid 1063] +++ exited with 0 +++ [pid 1061] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1061, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1064 ./strace-static-x86_64: Process 1064 attached [pid 1064] set_robust_list(0x5555564465e0, 24) = 0 [pid 1064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1064] setpgid(0, 0) = 0 [pid 1064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1064] write(3, "1000", 4) = 4 [pid 1064] close(3) = 0 [pid 1064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1064] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1064] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1065], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1065 [pid 1064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1064] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1065 attached [pid 1065] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1065] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = 0 [pid 1064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1064] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1065] <... futex resumed>) = 1 [pid 1065] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = 0 [pid 1064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1064] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1065] <... futex resumed>) = 1 [pid 1065] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = 0 [pid 1065] <... futex resumed>) = 1 [pid 1064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1065] umount2("./file0", MNT_DETACH [pid 1064] <... futex resumed>) = 0 [pid 1064] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1064] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1065] <... umount2 resumed>) = 0 [pid 1064] <... mprotect resumed>) = 0 [pid 1065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1065] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1066 attached [pid 1065] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1066] set_robust_list(0x7fc84e07e9e0, 24 [pid 1064] <... clone resumed>, parent_tid=[1066], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1066 [pid 1066] <... set_robust_list resumed>) = 0 [pid 1064] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1066] umount2("./file0", MNT_DETACH [pid 1064] <... futex resumed>) = 0 [pid 1064] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1066] <... umount2 resumed>) = 0 [pid 1066] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = 0 [pid 1066] <... futex resumed>) = 1 [pid 1066] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1064] exit_group(0) = ? [pid 1065] <... futex resumed>) = 231 [pid 1066] <... futex resumed>) = ? [pid 1065] +++ exited with 0 +++ [pid 1066] +++ exited with 0 +++ [pid 1064] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1064, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1067 ./strace-static-x86_64: Process 1067 attached [pid 1067] set_robust_list(0x5555564465e0, 24) = 0 [pid 1067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1067] setpgid(0, 0) = 0 [pid 1067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1067] write(3, "1000", 4) = 4 [pid 1067] close(3) = 0 [pid 1067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1067] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1067] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1068], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1068 [pid 1067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1067] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1068 attached [pid 1068] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1068] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 0 [pid 1067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1067] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... futex resumed>) = 1 [pid 1068] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 0 [pid 1067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1067] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... futex resumed>) = 1 [pid 1068] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 0 [pid 1068] <... futex resumed>) = 1 [pid 1067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] umount2("./file0", MNT_DETACH [pid 1067] <... futex resumed>) = 0 [pid 1067] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1067] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1068] <... umount2 resumed>) = 0 [pid 1067] <... mprotect resumed>) = 0 [pid 1068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1067] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1068] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1069 attached [pid 1067] <... clone resumed>, parent_tid=[1069], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1069 [pid 1069] set_robust_list(0x7fc84e07e9e0, 24 [pid 1067] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1069] <... set_robust_list resumed>) = 0 [pid 1067] <... futex resumed>) = 0 [pid 1069] umount2("./file0", MNT_DETACH [pid 1067] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1069] <... umount2 resumed>) = 0 [pid 1069] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 0 [pid 1069] <... futex resumed>) = 1 [pid 1067] exit_group(0 [pid 1069] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1067] <... exit_group resumed>) = ? [pid 1068] <... futex resumed>) = ? [pid 1068] +++ exited with 0 +++ [pid 1069] <... futex resumed>) = ? [pid 1069] +++ exited with 0 +++ [pid 1067] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1067, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1070 ./strace-static-x86_64: Process 1070 attached [pid 1070] set_robust_list(0x5555564465e0, 24) = 0 [pid 1070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1070] setpgid(0, 0) = 0 [pid 1070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1070] write(3, "1000", 4) = 4 [pid 1070] close(3) = 0 [pid 1070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1070] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1070] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1071], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1071 [pid 1070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1071 attached [pid 1071] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1071] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... futex resumed>) = 0 [pid 1070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... futex resumed>) = 1 [pid 1071] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... futex resumed>) = 0 [pid 1070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... futex resumed>) = 1 [pid 1071] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... futex resumed>) = 0 [pid 1070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1070] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1070] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1072 attached , parent_tid=[1072], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1072 [pid 1070] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1070] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... futex resumed>) = 1 [pid 1071] umount2("./file0", MNT_DETACH [pid 1072] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1071] <... umount2 resumed>) = 0 [pid 1071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1071] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] umount2("./file0", MNT_DETACH) = 0 [pid 1072] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1070] <... futex resumed>) = 0 [pid 1070] exit_group(0) = ? [pid 1071] <... futex resumed>) = ? [pid 1071] +++ exited with 0 +++ [pid 1072] +++ exited with 0 +++ [pid 1070] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1070, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1073 ./strace-static-x86_64: Process 1073 attached [pid 1073] set_robust_list(0x5555564465e0, 24) = 0 [pid 1073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1073] setpgid(0, 0) = 0 [pid 1073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1073] write(3, "1000", 4) = 4 [pid 1073] close(3) = 0 [pid 1073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1073] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1073] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1073] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1074 attached , parent_tid=[1074], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1074 [pid 1074] set_robust_list(0x7fc84e09f9e0, 24 [pid 1073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1074] <... set_robust_list resumed>) = 0 [pid 1073] <... futex resumed>) = 0 [pid 1074] mkdir("./file0", 000 [pid 1073] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1073] <... futex resumed>) = 0 [pid 1074] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1073] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] <... mount resumed>) = 0 [pid 1074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1073] <... futex resumed>) = 0 [pid 1073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1073] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1073] <... futex resumed>) = 0 [pid 1073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1073] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1073] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1073] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1073] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1075 attached [pid 1075] set_robust_list(0x7fc84e07e9e0, 24 [pid 1073] <... clone resumed>, parent_tid=[1075], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1075 [pid 1075] <... set_robust_list resumed>) = 0 [pid 1073] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] umount2("./file0", MNT_DETACH [pid 1073] <... futex resumed>) = 0 [pid 1073] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] umount2("./file0", MNT_DETACH [pid 1075] <... umount2 resumed>) = 0 [pid 1075] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1073] <... futex resumed>) = 0 [pid 1075] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] <... umount2 resumed>) = 0 [pid 1074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1074] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1073] exit_group(0) = ? [pid 1075] <... futex resumed>) = ? [pid 1075] +++ exited with 0 +++ [pid 1074] <... futex resumed>) = ? [pid 1074] +++ exited with 0 +++ [pid 1073] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1073, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1076 ./strace-static-x86_64: Process 1076 attached [pid 1076] set_robust_list(0x5555564465e0, 24) = 0 [pid 1076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1076] setpgid(0, 0) = 0 [pid 1076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1076] write(3, "1000", 4) = 4 [pid 1076] close(3) = 0 [pid 1076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1076] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1076] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1077 attached [pid 1077] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1076] <... clone resumed>, parent_tid=[1077], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1077 [pid 1076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1077] <... futex resumed>) = 0 [pid 1077] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1076] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1077] <... futex resumed>) = 0 [pid 1077] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1076] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] <... mount resumed>) = 0 [pid 1077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1077] <... futex resumed>) = 0 [pid 1077] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1076] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] <... mount resumed>) = 0 [pid 1077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1076] <... futex resumed>) = 0 [pid 1076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1076] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1076] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1077] umount2("./file0", MNT_DETACH [pid 1076] <... mprotect resumed>) = 0 [pid 1076] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1077] <... umount2 resumed>) = 0 [pid 1077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] <... clone resumed>, parent_tid=[1078], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1078 [pid 1076] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1076] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1078 attached [pid 1078] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1078] umount2("./file0", MNT_DETACH [pid 1077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1078] <... umount2 resumed>) = 0 [pid 1078] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] <... futex resumed>) = 0 [pid 1076] exit_group(0) = ? [pid 1078] <... futex resumed>) = ? [pid 1077] <... futex resumed>) = ? [pid 1078] +++ exited with 0 +++ [pid 1077] +++ exited with 0 +++ [pid 1076] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1076, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1079 ./strace-static-x86_64: Process 1079 attached [pid 1079] set_robust_list(0x5555564465e0, 24) = 0 [pid 1079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1079] setpgid(0, 0) = 0 [pid 1079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1079] write(3, "1000", 4) = 4 [pid 1079] close(3) = 0 [pid 1079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1079] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1079] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1080 attached , parent_tid=[1080], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1080 [pid 1080] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1080] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1080] <... futex resumed>) = 0 [pid 1079] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1080] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1079] <... futex resumed>) = 0 [pid 1080] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1079] <... futex resumed>) = 0 [pid 1080] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1079] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1080] <... mount resumed>) = 0 [pid 1080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1079] <... futex resumed>) = 0 [pid 1080] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1079] <... futex resumed>) = 0 [pid 1080] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1079] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1080] <... mount resumed>) = 0 [pid 1080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1079] <... futex resumed>) = 0 [pid 1080] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1079] <... futex resumed>) = 0 [pid 1080] umount2("./file0", MNT_DETACH [pid 1079] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1080] <... umount2 resumed>) = 0 [pid 1079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] <... mmap resumed>) = 0x7fc84e05e000 [pid 1080] <... futex resumed>) = 0 [pid 1079] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1080] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] <... mprotect resumed>) = 0 [pid 1079] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1081 attached , parent_tid=[1081], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1081 [pid 1081] set_robust_list(0x7fc84e07e9e0, 24 [pid 1079] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] <... set_robust_list resumed>) = 0 [pid 1079] <... futex resumed>) = 0 [pid 1081] umount2("./file0", MNT_DETACH [pid 1079] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1081] <... umount2 resumed>) = 0 [pid 1081] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] <... futex resumed>) = 0 [pid 1079] exit_group(0 [pid 1080] <... futex resumed>) = ? [pid 1079] <... exit_group resumed>) = ? [pid 1080] +++ exited with 0 +++ [pid 1081] <... futex resumed>) = ? [pid 1081] +++ exited with 0 +++ [pid 1079] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1079, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1082 ./strace-static-x86_64: Process 1082 attached [pid 1082] set_robust_list(0x5555564465e0, 24) = 0 [pid 1082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1082] setpgid(0, 0) = 0 [pid 1082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1082] write(3, "1000", 4) = 4 [pid 1082] close(3) = 0 [pid 1082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1082] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1082] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1083 attached , parent_tid=[1083], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1083 [pid 1082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] set_robust_list(0x7fc84e09f9e0, 24 [pid 1082] <... futex resumed>) = 0 [pid 1083] <... set_robust_list resumed>) = 0 [pid 1082] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1083] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1082] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1083] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1082] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1083] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1083] umount2("./file0", MNT_DETACH [pid 1082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1082] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1082] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1083] <... umount2 resumed>) = 0 [pid 1082] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1084], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1084 [pid 1082] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1084 attached [pid 1084] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1084] umount2("./file0", MNT_DETACH [pid 1083] <... futex resumed>) = 0 [pid 1083] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1084] <... umount2 resumed>) = 0 [pid 1084] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] <... futex resumed>) = 0 [pid 1082] exit_group(0) = ? [pid 1083] <... futex resumed>) = ? [pid 1084] <... futex resumed>) = ? [pid 1084] +++ exited with 0 +++ [pid 1083] +++ exited with 0 +++ [pid 1082] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1082, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1085 ./strace-static-x86_64: Process 1085 attached [pid 1085] set_robust_list(0x5555564465e0, 24) = 0 [pid 1085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1085] setpgid(0, 0) = 0 [pid 1085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1085] write(3, "1000", 4) = 4 [pid 1085] close(3) = 0 [pid 1085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1085] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1085] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1086 attached [pid 1086] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1086] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] <... clone resumed>, parent_tid=[1086], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1086 [pid 1085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1086] <... futex resumed>) = 0 [pid 1086] mkdir("./file0", 000 [pid 1085] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1086] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1086] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1086] <... futex resumed>) = 0 [pid 1086] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1085] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1086] <... mount resumed>) = 0 [pid 1086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1086] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1085] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1086] umount2("./file0", MNT_DETACH [pid 1085] <... mprotect resumed>) = 0 [pid 1085] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1087], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1087 [pid 1085] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1087 attached [pid 1087] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1087] umount2("./file0", MNT_DETACH [pid 1086] <... umount2 resumed>) = 0 [pid 1087] <... umount2 resumed>) = 0 [pid 1087] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1085] <... futex resumed>) = 0 [pid 1086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1087] <... futex resumed>) = 1 [pid 1087] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1086] <... futex resumed>) = 0 [pid 1086] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] exit_group(0) = ? [pid 1087] <... futex resumed>) = ? [pid 1086] <... futex resumed>) = ? [pid 1086] +++ exited with 0 +++ [pid 1087] +++ exited with 0 +++ [pid 1085] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1085, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1088 ./strace-static-x86_64: Process 1088 attached [pid 1088] set_robust_list(0x5555564465e0, 24) = 0 [pid 1088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1088] setpgid(0, 0) = 0 [pid 1088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1088] write(3, "1000", 4) = 4 [pid 1088] close(3) = 0 [pid 1088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1088] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1088] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1089 attached , parent_tid=[1089], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1089 [pid 1089] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1089] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1089] <... futex resumed>) = 0 [pid 1089] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1088] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1089] <... futex resumed>) = 0 [pid 1089] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1089] <... futex resumed>) = 0 [pid 1089] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1088] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1089] <... mount resumed>) = 0 [pid 1089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1089] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1089] <... futex resumed>) = 0 [pid 1089] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1088] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1089] <... mount resumed>) = 0 [pid 1089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1088] <... futex resumed>) = 0 [pid 1089] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1089] <... futex resumed>) = 0 [pid 1088] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] umount2("./file0", MNT_DETACH [pid 1088] <... futex resumed>) = 0 [pid 1088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1088] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1088] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1089] <... umount2 resumed>) = 0 [pid 1089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] <... clone resumed>, parent_tid=[1090], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1090 [pid 1089] <... futex resumed>) = 0 [pid 1088] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] <... futex resumed>) = 0 [pid 1088] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1090 attached [pid 1090] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1090] umount2("./file0", MNT_DETACH) = 0 [pid 1090] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1090] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] <... futex resumed>) = 0 [pid 1088] exit_group(0) = ? [pid 1089] <... futex resumed>) = ? [pid 1089] +++ exited with 0 +++ [pid 1090] <... futex resumed>) = ? [pid 1090] +++ exited with 0 +++ [pid 1088] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1088, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1091 ./strace-static-x86_64: Process 1091 attached [pid 1091] set_robust_list(0x5555564465e0, 24) = 0 [pid 1091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1091] setpgid(0, 0) = 0 [pid 1091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1091] write(3, "1000", 4) = 4 [pid 1091] close(3) = 0 [pid 1091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1091] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1091] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1091] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1092 attached , parent_tid=[1092], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1092 [pid 1092] set_robust_list(0x7fc84e09f9e0, 24 [pid 1091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... set_robust_list resumed>) = 0 [pid 1091] <... futex resumed>) = 0 [pid 1092] mkdir("./file0", 000 [pid 1091] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1091] <... futex resumed>) = 0 [pid 1092] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1091] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... mount resumed>) = 0 [pid 1092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1091] <... futex resumed>) = 0 [pid 1092] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1091] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... mount resumed>) = 0 [pid 1092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1091] <... futex resumed>) = 0 [pid 1091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1091] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1091] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1091] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1091] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1093 attached [pid 1093] set_robust_list(0x7fc84e07e9e0, 24 [pid 1091] <... clone resumed>, parent_tid=[1093], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1093 [pid 1091] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1093] <... set_robust_list resumed>) = 0 [pid 1091] <... futex resumed>) = 0 [pid 1091] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1093] umount2("./file0", MNT_DETACH [pid 1092] umount2("./file0", MNT_DETACH [pid 1093] <... umount2 resumed>) = 0 [pid 1092] <... umount2 resumed>) = 0 [pid 1093] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1091] <... futex resumed>) = 0 [pid 1093] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1092] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] exit_group(0) = ? [pid 1092] <... futex resumed>) = ? [pid 1093] <... futex resumed>) = ? [pid 1092] +++ exited with 0 +++ [pid 1093] +++ exited with 0 +++ [pid 1091] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1091, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1094 ./strace-static-x86_64: Process 1094 attached [pid 1094] set_robust_list(0x5555564465e0, 24) = 0 [pid 1094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1094] setpgid(0, 0) = 0 [pid 1094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1094] write(3, "1000", 4) = 4 [pid 1094] close(3) = 0 [pid 1094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1094] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1094] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1095 attached , parent_tid=[1095], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1095 [pid 1095] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] <... futex resumed>) = 0 [pid 1094] <... futex resumed>) = 1 [pid 1095] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1094] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1095] <... futex resumed>) = 0 [pid 1095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1095] <... futex resumed>) = 0 [pid 1095] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1094] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] <... mount resumed>) = 0 [pid 1095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1095] <... futex resumed>) = 0 [pid 1094] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1094] <... futex resumed>) = 0 [pid 1095] umount2("./file0", MNT_DETACH [pid 1094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1094] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1094] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1094] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1095] <... umount2 resumed>) = 0 [pid 1095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] <... clone resumed>, parent_tid=[1096], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1096 [pid 1095] <... futex resumed>) = 0 [pid 1094] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1094] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1096 attached [pid 1094] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1096] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1096] umount2("./file0", MNT_DETACH) = 0 [pid 1096] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1094] <... futex resumed>) = 0 [pid 1096] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1094] exit_group(0) = ? [pid 1095] <... futex resumed>) = ? [pid 1095] +++ exited with 0 +++ [pid 1096] <... futex resumed>) = ? [pid 1096] +++ exited with 0 +++ [pid 1094] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1094, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1097 ./strace-static-x86_64: Process 1097 attached [pid 1097] set_robust_list(0x5555564465e0, 24) = 0 [pid 1097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1097] setpgid(0, 0) = 0 [pid 1097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1097] write(3, "1000", 4) = 4 [pid 1097] close(3) = 0 [pid 1097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1097] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1097] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1098], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1098 [pid 1097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1098 attached [pid 1098] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1098] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] <... futex resumed>) = 0 [pid 1097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1098] <... futex resumed>) = 1 [pid 1098] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] <... futex resumed>) = 0 [pid 1097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1098] <... futex resumed>) = 1 [pid 1098] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] <... futex resumed>) = 0 [pid 1097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1097] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1097] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1099 attached , parent_tid=[1099], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1099 [pid 1097] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1097] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1098] <... futex resumed>) = 1 [pid 1098] umount2("./file0", MNT_DETACH [pid 1099] set_robust_list(0x7fc84e07e9e0, 24 [pid 1098] <... umount2 resumed>) = 0 [pid 1098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1098] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1099] <... set_robust_list resumed>) = 0 [pid 1099] umount2("./file0", MNT_DETACH) = 0 [pid 1099] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1097] <... futex resumed>) = 0 [pid 1097] exit_group(0) = ? [pid 1098] <... futex resumed>) = ? [pid 1098] +++ exited with 0 +++ [pid 1099] +++ exited with 0 +++ [pid 1097] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1097, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1100 ./strace-static-x86_64: Process 1100 attached [pid 1100] set_robust_list(0x5555564465e0, 24) = 0 [pid 1100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1100] setpgid(0, 0) = 0 [pid 1100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1100] write(3, "1000", 4) = 4 [pid 1100] close(3) = 0 [pid 1100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1100] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1100] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1101], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1101 [pid 1100] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1100] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1101 attached [pid 1101] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1101] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1101] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1100] <... futex resumed>) = 0 [pid 1101] <... futex resumed>) = 1 [pid 1100] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1100] <... futex resumed>) = 0 [pid 1100] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1101] <... mount resumed>) = 0 [pid 1101] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1101] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1100] <... futex resumed>) = 0 [pid 1101] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1100] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1101] <... mount resumed>) = 0 [pid 1101] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1100] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1100] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1100] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1100] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1102 attached [pid 1102] set_robust_list(0x7fc84e07e9e0, 24 [pid 1100] <... clone resumed>, parent_tid=[1102], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1102 [pid 1102] <... set_robust_list resumed>) = 0 [pid 1100] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1102] umount2("./file0", MNT_DETACH [pid 1100] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1101] umount2("./file0", MNT_DETACH [pid 1102] <... umount2 resumed>) = 0 [pid 1102] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1102] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1101] <... umount2 resumed>) = 0 [pid 1101] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1101] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] exit_group(0) = ? [pid 1101] <... futex resumed>) = ? [pid 1101] +++ exited with 0 +++ [pid 1102] <... futex resumed>) = ? [pid 1102] +++ exited with 0 +++ [pid 1100] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1100, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1103 ./strace-static-x86_64: Process 1103 attached [pid 1103] set_robust_list(0x5555564465e0, 24) = 0 [pid 1103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1103] setpgid(0, 0) = 0 [pid 1103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1103] write(3, "1000", 4) = 4 [pid 1103] close(3) = 0 [pid 1103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1103] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1103] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1103] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1104], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1104 ./strace-static-x86_64: Process 1104 attached [pid 1104] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1103] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] mkdir("./file0", 000 [pid 1103] <... futex resumed>) = 0 [pid 1103] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1104] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1103] <... futex resumed>) = 0 [pid 1103] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1103] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1104] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1103] <... futex resumed>) = 0 [pid 1103] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1103] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1104] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1103] <... futex resumed>) = 0 [pid 1104] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1103] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1103] <... futex resumed>) = 0 [pid 1104] umount2("./file0", MNT_DETACH [pid 1103] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1104] <... umount2 resumed>) = 0 [pid 1103] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1104] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... mmap resumed>) = 0x7fc84e05e000 [pid 1104] <... futex resumed>) = 0 [pid 1104] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1103] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1103] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1105 attached , parent_tid=[1105], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1105 [pid 1105] set_robust_list(0x7fc84e07e9e0, 24 [pid 1103] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] <... set_robust_list resumed>) = 0 [pid 1103] <... futex resumed>) = 0 [pid 1105] umount2("./file0", MNT_DETACH [pid 1103] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] <... umount2 resumed>) = 0 [pid 1105] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1103] <... futex resumed>) = 0 [pid 1105] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1103] exit_group(0) = ? [pid 1104] <... futex resumed>) = 231 [pid 1105] <... futex resumed>) = ? [pid 1104] +++ exited with 0 +++ [pid 1105] +++ exited with 0 +++ [pid 1103] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1103, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1106 ./strace-static-x86_64: Process 1106 attached [pid 1106] set_robust_list(0x5555564465e0, 24) = 0 [pid 1106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1106] setpgid(0, 0) = 0 [pid 1106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1106] write(3, "1000", 4) = 4 [pid 1106] close(3) = 0 [pid 1106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1106] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1106] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1106] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1107 attached , parent_tid=[1107], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1107 [pid 1107] set_robust_list(0x7fc84e09f9e0, 24 [pid 1106] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] <... set_robust_list resumed>) = 0 [pid 1106] <... futex resumed>) = 0 [pid 1106] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1107] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... futex resumed>) = 0 [pid 1107] <... futex resumed>) = 1 [pid 1106] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1106] <... futex resumed>) = 0 [pid 1106] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] <... mount resumed>) = 0 [pid 1107] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1106] <... futex resumed>) = 0 [pid 1106] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1106] <... futex resumed>) = 0 [pid 1106] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] <... mount resumed>) = 0 [pid 1107] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1106] <... futex resumed>) = 0 [pid 1107] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1106] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1107] umount2("./file0", MNT_DETACH [pid 1106] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1106] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1106] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1107] <... umount2 resumed>) = 0 [pid 1106] <... mprotect resumed>) = 0 [pid 1106] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1108], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1108 [pid 1106] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1106] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1108 attached [pid 1107] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1108] umount2("./file0", MNT_DETACH) = 0 [pid 1108] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1106] <... futex resumed>) = 0 [pid 1106] exit_group(0 [pid 1108] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1106] <... exit_group resumed>) = ? [pid 1108] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1107] <... futex resumed>) = ? [pid 1107] +++ exited with 0 +++ [pid 1108] +++ exited with 0 +++ [pid 1106] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1106, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1109 ./strace-static-x86_64: Process 1109 attached [pid 1109] set_robust_list(0x5555564465e0, 24) = 0 [pid 1109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1109] setpgid(0, 0) = 0 [pid 1109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1109] write(3, "1000", 4) = 4 [pid 1109] close(3) = 0 [pid 1109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1109] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1109] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1109] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1110], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1110 [pid 1109] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1109] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1110 attached [pid 1110] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1110] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1110] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... futex resumed>) = 0 [pid 1109] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1109] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1110] <... futex resumed>) = 1 [pid 1110] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1110] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... futex resumed>) = 0 [pid 1109] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1109] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1110] <... futex resumed>) = 1 [pid 1110] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1110] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... futex resumed>) = 0 [pid 1110] <... futex resumed>) = 1 [pid 1109] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1110] umount2("./file0", MNT_DETACH [pid 1109] <... futex resumed>) = 0 [pid 1109] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1109] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1110] <... umount2 resumed>) = 0 [pid 1109] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1110] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... mprotect resumed>) = 0 [pid 1110] <... futex resumed>) = 0 [pid 1109] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1110] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1111 attached [pid 1109] <... clone resumed>, parent_tid=[1111], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1111 [pid 1111] set_robust_list(0x7fc84e07e9e0, 24 [pid 1109] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1111] <... set_robust_list resumed>) = 0 [pid 1109] <... futex resumed>) = 0 [pid 1111] umount2("./file0", MNT_DETACH [pid 1109] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1111] <... umount2 resumed>) = 0 [pid 1111] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... futex resumed>) = 0 [pid 1111] <... futex resumed>) = 1 [pid 1109] exit_group(0 [pid 1111] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1109] <... exit_group resumed>) = ? [pid 1111] <... futex resumed>) = ? [pid 1110] <... futex resumed>) = ? [pid 1110] +++ exited with 0 +++ [pid 1111] +++ exited with 0 +++ [pid 1109] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1109, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1112 attached , child_tidptr=0x5555564465d0) = 1112 [pid 1112] set_robust_list(0x5555564465e0, 24) = 0 [pid 1112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1112] setpgid(0, 0) = 0 [pid 1112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1112] write(3, "1000", 4) = 4 [pid 1112] close(3) = 0 [pid 1112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1112] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1112] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1112] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1113 attached , parent_tid=[1113], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1113 [pid 1113] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1113] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1113] <... futex resumed>) = 0 [pid 1113] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1113] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1113] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1113] <... futex resumed>) = 0 [pid 1113] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1112] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1113] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1113] <... futex resumed>) = 0 [pid 1113] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1112] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... mount resumed>) = 0 [pid 1113] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1113] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1113] <... futex resumed>) = 0 [pid 1113] umount2("./file0", MNT_DETACH) = 0 [pid 1112] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1113] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] <... futex resumed>) = 0 [pid 1113] <... futex resumed>) = 0 [pid 1112] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1113] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... mmap resumed>) = 0x7fc84e05e000 [pid 1112] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1112] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1114 attached , parent_tid=[1114], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1114 [pid 1114] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1114] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1114] <... futex resumed>) = 0 [pid 1114] umount2("./file0", MNT_DETACH) = 0 [pid 1112] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1114] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1114] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] exit_group(0 [pid 1113] <... futex resumed>) = ? [pid 1112] <... exit_group resumed>) = ? [pid 1113] +++ exited with 0 +++ [pid 1114] <... futex resumed>) = ? [pid 1114] +++ exited with 0 +++ [pid 1112] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1112, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1115 ./strace-static-x86_64: Process 1115 attached [pid 1115] set_robust_list(0x5555564465e0, 24) = 0 [pid 1115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1115] setpgid(0, 0) = 0 [pid 1115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1115] write(3, "1000", 4) = 4 [pid 1115] close(3) = 0 [pid 1115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1115] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1115] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1115] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1116 attached , parent_tid=[1116], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1116 [pid 1116] set_robust_list(0x7fc84e09f9e0, 24 [pid 1115] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] <... set_robust_list resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1115] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1116] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1116] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1115] <... futex resumed>) = 0 [pid 1116] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1115] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1115] <... futex resumed>) = 0 [pid 1115] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1116] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1116] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] <... futex resumed>) = 0 [pid 1116] <... futex resumed>) = 1 [pid 1115] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1116] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1115] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1116] <... mount resumed>) = 0 [pid 1116] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1115] <... futex resumed>) = 0 [pid 1115] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1116] umount2("./file0", MNT_DETACH [pid 1115] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1115] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1115] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1115] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1117 attached [pid 1116] <... umount2 resumed>) = 0 [pid 1117] set_robust_list(0x7fc84e07e9e0, 24 [pid 1116] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] <... clone resumed>, parent_tid=[1117], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1117 [pid 1117] <... set_robust_list resumed>) = 0 [pid 1116] <... futex resumed>) = 0 [pid 1117] umount2("./file0", MNT_DETACH [pid 1115] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1115] <... futex resumed>) = 0 [pid 1115] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1117] <... umount2 resumed>) = 0 [pid 1117] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] <... futex resumed>) = 0 [pid 1117] <... futex resumed>) = 1 [pid 1117] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1115] exit_group(0) = ? [pid 1116] <... futex resumed>) = 231 [pid 1117] <... futex resumed>) = ? [pid 1116] +++ exited with 0 +++ [pid 1117] +++ exited with 0 +++ [pid 1115] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1115, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1118 ./strace-static-x86_64: Process 1118 attached [pid 1118] set_robust_list(0x5555564465e0, 24) = 0 [pid 1118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1118] setpgid(0, 0) = 0 [pid 1118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1118] write(3, "1000", 4) = 4 [pid 1118] close(3) = 0 [pid 1118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1118] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1118] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1119 attached [pid 1119] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1119] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] <... clone resumed>, parent_tid=[1119], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1119 [pid 1118] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1119] <... futex resumed>) = 0 [pid 1119] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1119] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1119] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1119] <... futex resumed>) = 0 [pid 1119] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1118] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1119] <... mount resumed>) = 0 [pid 1119] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1119] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1119] <... futex resumed>) = 0 [pid 1119] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1118] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1119] <... mount resumed>) = 0 [pid 1119] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1119] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1119] <... futex resumed>) = 0 [pid 1119] umount2("./file0", MNT_DETACH [pid 1118] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] <... umount2 resumed>) = 0 [pid 1119] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1119] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] <... futex resumed>) = 0 [pid 1118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1118] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1118] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1120 attached [pid 1120] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1120] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] <... clone resumed>, parent_tid=[1120], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1120 [pid 1118] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1120] <... futex resumed>) = 0 [pid 1120] umount2("./file0", MNT_DETACH) = 0 [pid 1120] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1120] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] exit_group(0 [pid 1119] <... futex resumed>) = ? [pid 1118] <... exit_group resumed>) = ? [pid 1119] +++ exited with 0 +++ [pid 1120] <... futex resumed>) = ? [pid 1120] +++ exited with 0 +++ [pid 1118] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1118, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1121 ./strace-static-x86_64: Process 1121 attached [pid 1121] set_robust_list(0x5555564465e0, 24) = 0 [pid 1121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1121] setpgid(0, 0) = 0 [pid 1121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1121] write(3, "1000", 4) = 4 [pid 1121] close(3) = 0 [pid 1121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1121] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1121] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1121] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1122 attached , parent_tid=[1122], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1122 [pid 1122] set_robust_list(0x7fc84e09f9e0, 24 [pid 1121] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... set_robust_list resumed>) = 0 [pid 1121] <... futex resumed>) = 0 [pid 1121] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1122] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1121] <... futex resumed>) = 0 [pid 1122] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... futex resumed>) = 0 [pid 1122] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1121] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... mount resumed>) = 0 [pid 1122] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] <... futex resumed>) = 0 [pid 1122] <... futex resumed>) = 1 [pid 1121] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1121] <... futex resumed>) = 0 [pid 1121] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... mount resumed>) = 0 [pid 1122] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1121] <... futex resumed>) = 0 [pid 1121] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] umount2("./file0", MNT_DETACH [pid 1121] <... futex resumed>) = 0 [pid 1121] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1121] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1121] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1121] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1122] <... umount2 resumed>) = 0 [pid 1122] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] <... clone resumed>, parent_tid=[1123], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1123 ./strace-static-x86_64: Process 1123 attached [pid 1122] <... futex resumed>) = 0 [pid 1121] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1123] set_robust_list(0x7fc84e07e9e0, 24 [pid 1122] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] <... futex resumed>) = 0 [pid 1123] <... set_robust_list resumed>) = 0 [pid 1121] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1123] umount2("./file0", MNT_DETACH) = 0 [pid 1123] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1121] <... futex resumed>) = 0 [pid 1121] exit_group(0 [pid 1123] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] <... exit_group resumed>) = ? [pid 1122] <... futex resumed>) = ? [pid 1122] +++ exited with 0 +++ [pid 1123] <... futex resumed>) = ? [pid 1123] +++ exited with 0 +++ [pid 1121] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1121, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1124 ./strace-static-x86_64: Process 1124 attached [pid 1124] set_robust_list(0x5555564465e0, 24) = 0 [pid 1124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1124] setpgid(0, 0) = 0 [pid 1124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1124] write(3, "1000", 4) = 4 [pid 1124] close(3) = 0 [pid 1124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1124] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1124] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1125], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1125 ./strace-static-x86_64: Process 1125 attached [pid 1125] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1125] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1125] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1125] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1124] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1125] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1125] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1124] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1125] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1124] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1125] <... mount resumed>) = 0 [pid 1125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1124] <... futex resumed>) = 0 [pid 1124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1124] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1124] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1124] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1125] umount2("./file0", MNT_DETACH [pid 1124] <... clone resumed>, parent_tid=[1126], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1126 [pid 1124] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1124] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1126 attached [pid 1126] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1126] umount2("./file0", MNT_DETACH) = 0 [pid 1126] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... futex resumed>) = 0 [pid 1125] <... umount2 resumed>) = 0 [pid 1126] <... futex resumed>) = 1 [pid 1125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1126] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1125] <... futex resumed>) = 0 [pid 1125] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1124] exit_group(0) = ? [pid 1126] <... futex resumed>) = ? [pid 1125] <... futex resumed>) = ? [pid 1125] +++ exited with 0 +++ [pid 1126] +++ exited with 0 +++ [pid 1124] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1124, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1127 ./strace-static-x86_64: Process 1127 attached [pid 1127] set_robust_list(0x5555564465e0, 24) = 0 [pid 1127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1127] setpgid(0, 0) = 0 [pid 1127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1127] write(3, "1000", 4) = 4 [pid 1127] close(3) = 0 [pid 1127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1127] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1127] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1128], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1128 [pid 1127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1128 attached [pid 1128] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1128] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] <... futex resumed>) = 0 [pid 1127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... futex resumed>) = 1 [pid 1128] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] <... futex resumed>) = 0 [pid 1127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... futex resumed>) = 1 [pid 1128] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] <... futex resumed>) = 0 [pid 1127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1127] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1127] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1128] <... futex resumed>) = 1 [pid 1128] umount2("./file0", MNT_DETACH [pid 1127] <... clone resumed>, parent_tid=[1129], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1129 [pid 1127] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1127] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... umount2 resumed>) = 0 [pid 1128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1128] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1129 attached [pid 1129] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1129] umount2("./file0", MNT_DETACH) = 0 [pid 1129] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1127] <... futex resumed>) = 0 [pid 1127] exit_group(0) = ? [pid 1128] <... futex resumed>) = ? [pid 1128] +++ exited with 0 +++ [pid 1129] +++ exited with 0 +++ [pid 1127] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1127, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1130 ./strace-static-x86_64: Process 1130 attached [pid 1130] set_robust_list(0x5555564465e0, 24) = 0 [pid 1130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1130] setpgid(0, 0) = 0 [pid 1130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1130] write(3, "1000", 4) = 4 [pid 1130] close(3) = 0 [pid 1130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1130] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1130] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1131 attached , parent_tid=[1131], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1131 [pid 1131] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1131] <... futex resumed>) = 0 [pid 1131] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1131] <... futex resumed>) = 0 [pid 1131] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1131] <... futex resumed>) = 0 [pid 1131] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1130] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1131] <... mount resumed>) = 0 [pid 1131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1130] <... futex resumed>) = 0 [pid 1131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1131] umount2("./file0", MNT_DETACH [pid 1130] <... futex resumed>) = 0 [pid 1130] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1131] <... umount2 resumed>) = 0 [pid 1130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] <... mmap resumed>) = 0x7fc84e05e000 [pid 1131] <... futex resumed>) = 0 [pid 1130] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] <... mprotect resumed>) = 0 [pid 1130] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1132 attached [pid 1132] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1132] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] <... clone resumed>, parent_tid=[1132], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1132 [pid 1130] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1132] <... futex resumed>) = 0 [pid 1132] umount2("./file0", MNT_DETACH [pid 1130] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1132] <... umount2 resumed>) = 0 [pid 1132] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1132] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] exit_group(0 [pid 1131] <... futex resumed>) = ? [pid 1130] <... exit_group resumed>) = ? [pid 1132] <... futex resumed>) = ? [pid 1132] +++ exited with 0 +++ [pid 1131] +++ exited with 0 +++ [pid 1130] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1130, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1133 attached , child_tidptr=0x5555564465d0) = 1133 [pid 1133] set_robust_list(0x5555564465e0, 24) = 0 [pid 1133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1133] setpgid(0, 0) = 0 [pid 1133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1133] write(3, "1000", 4) = 4 [pid 1133] close(3) = 0 [pid 1133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1133] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1133] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1133] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1134 attached , parent_tid=[1134], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1134 [pid 1134] set_robust_list(0x7fc84e09f9e0, 24 [pid 1133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1134] <... set_robust_list resumed>) = 0 [pid 1133] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... futex resumed>) = 0 [pid 1134] <... futex resumed>) = 1 [pid 1133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1133] <... futex resumed>) = 0 [pid 1133] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] <... mount resumed>) = 0 [pid 1134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1133] <... futex resumed>) = 0 [pid 1134] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1133] <... futex resumed>) = 0 [pid 1134] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1133] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] <... mount resumed>) = 0 [pid 1134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... futex resumed>) = 0 [pid 1134] <... futex resumed>) = 1 [pid 1134] umount2("./file0", MNT_DETACH [pid 1133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1133] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1133] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1133] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1133] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1134] <... umount2 resumed>) = 0 [pid 1134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1135 attached ) = 0 [pid 1133] <... clone resumed>, parent_tid=[1135], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1135 [pid 1135] set_robust_list(0x7fc84e07e9e0, 24 [pid 1134] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] <... set_robust_list resumed>) = 0 [pid 1133] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] umount2("./file0", MNT_DETACH [pid 1133] <... futex resumed>) = 0 [pid 1133] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1135] <... umount2 resumed>) = 0 [pid 1135] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... futex resumed>) = 0 [pid 1135] <... futex resumed>) = 1 [pid 1133] exit_group(0) = ? [pid 1134] <... futex resumed>) = ? [pid 1134] +++ exited with 0 +++ [pid 1135] +++ exited with 0 +++ [pid 1133] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1133, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1136 ./strace-static-x86_64: Process 1136 attached [pid 1136] set_robust_list(0x5555564465e0, 24) = 0 [pid 1136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1136] setpgid(0, 0) = 0 [pid 1136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1136] write(3, "1000", 4) = 4 [pid 1136] close(3) = 0 [pid 1136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1136] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1136] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1137], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1137 ./strace-static-x86_64: Process 1137 attached [pid 1137] set_robust_list(0x7fc84e09f9e0, 24 [pid 1136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1137] <... set_robust_list resumed>) = 0 [pid 1137] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1137] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1136] <... futex resumed>) = 1 [pid 1136] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1136] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1137] <... futex resumed>) = 0 [pid 1137] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1136] <... futex resumed>) = 0 [pid 1136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1137] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1136] <... futex resumed>) = 0 [pid 1136] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1137] <... mount resumed>) = 0 [pid 1137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1136] <... futex resumed>) = 0 [pid 1137] umount2("./file0", MNT_DETACH [pid 1136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1136] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1137] <... umount2 resumed>) = 0 [pid 1137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1137] <... futex resumed>) = 0 [pid 1136] <... mprotect resumed>) = 0 [pid 1137] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1136] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1138 attached , parent_tid=[1138], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1138 [pid 1138] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1138] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1136] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1138] <... futex resumed>) = 0 [pid 1138] umount2("./file0", MNT_DETACH [pid 1136] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] <... umount2 resumed>) = 0 [pid 1138] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1138] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1136] exit_group(0 [pid 1137] <... futex resumed>) = ? [pid 1136] <... exit_group resumed>) = ? [pid 1138] <... futex resumed>) = ? [pid 1138] +++ exited with 0 +++ [pid 1137] +++ exited with 0 +++ [pid 1136] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1136, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1139 attached , child_tidptr=0x5555564465d0) = 1139 [pid 1139] set_robust_list(0x5555564465e0, 24) = 0 [pid 1139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1139] setpgid(0, 0) = 0 [pid 1139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1139] write(3, "1000", 4) = 4 [pid 1139] close(3) = 0 [pid 1139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1139] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1139] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1140], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1140 [pid 1139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1139] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1140 attached [pid 1140] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1140] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1139] <... futex resumed>) = 0 [pid 1139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1139] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1140] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1139] <... futex resumed>) = 0 [pid 1139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1139] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1140] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1139] <... futex resumed>) = 0 [pid 1139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1139] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1139] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1139] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1141], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1141 [pid 1140] umount2("./file0", MNT_DETACH [pid 1139] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1141 attached [pid 1141] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1139] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1141] umount2("./file0", MNT_DETACH [pid 1140] <... umount2 resumed>) = 0 [pid 1141] <... umount2 resumed>) = 0 [pid 1141] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1139] <... futex resumed>) = 0 [pid 1140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1140] <... futex resumed>) = 0 [pid 1139] exit_group(0) = ? [pid 1141] <... futex resumed>) = ? [pid 1141] +++ exited with 0 +++ [pid 1140] +++ exited with 0 +++ [pid 1139] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1139, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1142 ./strace-static-x86_64: Process 1142 attached [pid 1142] set_robust_list(0x5555564465e0, 24) = 0 [pid 1142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1142] setpgid(0, 0) = 0 [pid 1142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1142] write(3, "1000", 4) = 4 [pid 1142] close(3) = 0 [pid 1142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1142] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1142] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1143 attached [pid 1143] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] <... clone resumed>, parent_tid=[1143], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1143 [pid 1142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1143] <... futex resumed>) = 0 [pid 1143] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... futex resumed>) = 0 [pid 1143] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1142] <... futex resumed>) = 1 [pid 1142] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1143] <... mount resumed>) = 0 [pid 1143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] <... futex resumed>) = 0 [pid 1142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... futex resumed>) = 0 [pid 1142] <... futex resumed>) = 1 [pid 1142] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1143] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1142] <... futex resumed>) = 0 [pid 1142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1142] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1142] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1143] umount2("./file0", MNT_DETACH [pid 1142] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1144], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1144 [pid 1142] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1144 attached [pid 1142] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1143] <... umount2 resumed>) = 0 [pid 1144] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1144] umount2("./file0", MNT_DETACH [pid 1143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1144] <... umount2 resumed>) = 0 [pid 1143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1144] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1142] <... futex resumed>) = 0 [pid 1144] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] exit_group(0) = ? [pid 1143] <... futex resumed>) = ? [pid 1143] +++ exited with 0 +++ [pid 1144] <... futex resumed>) = ? [pid 1144] +++ exited with 0 +++ [pid 1142] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1142, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1145 ./strace-static-x86_64: Process 1145 attached [pid 1145] set_robust_list(0x5555564465e0, 24) = 0 [pid 1145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1145] setpgid(0, 0) = 0 [pid 1145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1145] write(3, "1000", 4) = 4 [pid 1145] close(3) = 0 [pid 1145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1145] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1145] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1146], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1146 [pid 1145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1146 attached [pid 1146] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1146] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... futex resumed>) = 1 [pid 1146] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1146] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1145] <... futex resumed>) = 0 [pid 1146] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1146] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... mount resumed>) = 0 [pid 1146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1146] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1146] <... futex resumed>) = 0 [pid 1145] <... futex resumed>) = 1 [pid 1146] umount2("./file0", MNT_DETACH [pid 1145] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1146] <... umount2 resumed>) = 0 [pid 1145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1145] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1145] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1147 attached [pid 1147] set_robust_list(0x7fc84e07e9e0, 24 [pid 1145] <... clone resumed>, parent_tid=[1147], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1147 [pid 1147] <... set_robust_list resumed>) = 0 [pid 1145] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] umount2("./file0", MNT_DETACH [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1147] <... umount2 resumed>) = 0 [pid 1147] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1147] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1145] <... futex resumed>) = 0 [pid 1146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1146] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1145] exit_group(0) = ? [pid 1147] <... futex resumed>) = ? [pid 1147] +++ exited with 0 +++ [pid 1146] <... futex resumed>) = ? [pid 1146] +++ exited with 0 +++ [pid 1145] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1145, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1148 ./strace-static-x86_64: Process 1148 attached [pid 1148] set_robust_list(0x5555564465e0, 24) = 0 [pid 1148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1148] setpgid(0, 0) = 0 [pid 1148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1148] write(3, "1000", 4) = 4 [pid 1148] close(3) = 0 [pid 1148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1148] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1148] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1149], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1149 [pid 1148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1148] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1149 attached [pid 1149] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1149] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] <... futex resumed>) = 0 [pid 1148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1148] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1149] <... futex resumed>) = 1 [pid 1149] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] <... futex resumed>) = 0 [pid 1148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1148] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1149] <... futex resumed>) = 1 [pid 1149] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] <... futex resumed>) = 0 [pid 1149] <... futex resumed>) = 1 [pid 1148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] umount2("./file0", MNT_DETACH [pid 1148] <... futex resumed>) = 0 [pid 1148] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1148] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1149] <... umount2 resumed>) = 0 [pid 1148] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1150 attached [pid 1149] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1148] <... clone resumed>, parent_tid=[1150], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1150 [pid 1150] set_robust_list(0x7fc84e07e9e0, 24 [pid 1148] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] <... set_robust_list resumed>) = 0 [pid 1148] <... futex resumed>) = 0 [pid 1150] umount2("./file0", MNT_DETACH [pid 1148] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1150] <... umount2 resumed>) = 0 [pid 1150] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] <... futex resumed>) = 0 [pid 1150] <... futex resumed>) = 1 [pid 1148] exit_group(0 [pid 1150] ????( [pid 1148] <... exit_group resumed>) = ? [pid 1149] <... futex resumed>) = ? [pid 1149] +++ exited with 0 +++ [pid 1150] <... ???? resumed>) = ? [pid 1150] +++ exited with 0 +++ [pid 1148] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1148, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1151 ./strace-static-x86_64: Process 1151 attached [pid 1151] set_robust_list(0x5555564465e0, 24) = 0 [pid 1151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1151] setpgid(0, 0) = 0 [pid 1151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1151] write(3, "1000", 4) = 4 [pid 1151] close(3) = 0 [pid 1151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1151] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1151] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1151] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1152], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1152 [pid 1151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1151] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1152 attached [pid 1152] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1152] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1151] <... futex resumed>) = 0 [pid 1151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... futex resumed>) = 0 [pid 1152] <... futex resumed>) = 0 [pid 1152] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1151] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1151] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1152] <... futex resumed>) = 0 [pid 1152] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1151] <... futex resumed>) = 0 [pid 1151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1151] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1151] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1151] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1151] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1152] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1153 attached [pid 1151] <... clone resumed>, parent_tid=[1153], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1153 [pid 1153] set_robust_list(0x7fc84e07e9e0, 24 [pid 1151] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] <... set_robust_list resumed>) = 0 [pid 1151] <... futex resumed>) = 0 [pid 1151] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1153] umount2("./file0", MNT_DETACH [pid 1152] <... umount2 resumed>) = 0 [pid 1153] <... umount2 resumed>) = 0 [pid 1153] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1153] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1151] <... futex resumed>) = 0 [pid 1152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] exit_group(0) = ? [pid 1153] <... futex resumed>) = ? [pid 1153] +++ exited with 0 +++ [pid 1152] <... futex resumed>) = ? [pid 1152] +++ exited with 0 +++ [pid 1151] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1151, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1154 ./strace-static-x86_64: Process 1154 attached [pid 1154] set_robust_list(0x5555564465e0, 24) = 0 [pid 1154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1154] setpgid(0, 0) = 0 [pid 1154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1154] write(3, "1000", 4) = 4 [pid 1154] close(3) = 0 [pid 1154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1154] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1154] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1155 attached , parent_tid=[1155], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1155 [pid 1155] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1155] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1155] mkdir("./file0", 000 [pid 1154] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1155] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1155] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1155] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1155] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1155] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1155] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1155] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1154] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1155] <... mount resumed>) = 0 [pid 1155] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1155] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] <... futex resumed>) = 0 [pid 1154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1155] umount2("./file0", MNT_DETACH [pid 1154] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1155] <... umount2 resumed>) = 0 [pid 1154] <... futex resumed>) = 0 [pid 1155] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1155] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1154] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1154] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1156 attached , parent_tid=[1156], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1156 [pid 1156] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1156] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1156] <... futex resumed>) = 0 [pid 1156] umount2("./file0", MNT_DETACH [pid 1154] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1156] <... umount2 resumed>) = 0 [pid 1156] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1156] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1154] exit_group(0 [pid 1155] <... futex resumed>) = ? [pid 1154] <... exit_group resumed>) = ? [pid 1155] +++ exited with 0 +++ [pid 1156] <... futex resumed>) = ? [pid 1156] +++ exited with 0 +++ [pid 1154] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1154, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1157 ./strace-static-x86_64: Process 1157 attached [pid 1157] set_robust_list(0x5555564465e0, 24) = 0 [pid 1157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1157] setpgid(0, 0) = 0 [pid 1157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1157] write(3, "1000", 4) = 4 [pid 1157] close(3) = 0 [pid 1157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1157] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1157] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1157] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1158 attached , parent_tid=[1158], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1158 [pid 1158] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1158] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1158] <... futex resumed>) = 0 [pid 1158] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1158] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1158] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1157] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1158] <... futex resumed>) = 0 [pid 1157] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1158] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1158] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1158] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] <... futex resumed>) = 0 [pid 1157] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1158] <... futex resumed>) = 0 [pid 1158] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1157] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1158] <... mount resumed>) = 0 [pid 1158] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1158] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] <... futex resumed>) = 0 [pid 1157] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1158] <... futex resumed>) = 0 [pid 1158] umount2("./file0", MNT_DETACH [pid 1157] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1157] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1158] <... umount2 resumed>) = 0 [pid 1158] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1158] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] <... mmap resumed>) = 0x7fc84e05e000 [pid 1157] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1157] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1159 attached [pid 1159] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1159] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] <... clone resumed>, parent_tid=[1159], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1159 [pid 1157] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1159] <... futex resumed>) = 0 [pid 1157] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1159] umount2("./file0", MNT_DETACH) = 0 [pid 1159] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1159] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] <... futex resumed>) = 0 [pid 1157] exit_group(0) = ? [pid 1158] <... futex resumed>) = ? [pid 1158] +++ exited with 0 +++ [pid 1159] <... futex resumed>) = ? [pid 1159] +++ exited with 0 +++ [pid 1157] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1157, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1160 ./strace-static-x86_64: Process 1160 attached [pid 1160] set_robust_list(0x5555564465e0, 24) = 0 [pid 1160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1160] setpgid(0, 0) = 0 [pid 1160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1160] write(3, "1000", 4) = 4 [pid 1160] close(3) = 0 [pid 1160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1160] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1160] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1161 attached , parent_tid=[1161], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1161 [pid 1161] set_robust_list(0x7fc84e09f9e0, 24 [pid 1160] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] <... set_robust_list resumed>) = 0 [pid 1160] <... futex resumed>) = 0 [pid 1160] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1161] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1161] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1160] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = 1 [pid 1160] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1160] <... futex resumed>) = 0 [pid 1160] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1161] <... mount resumed>) = 0 [pid 1161] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1160] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1160] <... futex resumed>) = 0 [pid 1160] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1161] <... mount resumed>) = 0 [pid 1161] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1160] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1160] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] umount2("./file0", MNT_DETACH [pid 1160] <... futex resumed>) = 0 [pid 1160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1160] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1161] <... umount2 resumed>) = 0 [pid 1160] <... mprotect resumed>) = 0 [pid 1161] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1160] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1161] <... futex resumed>) = 0 [pid 1160] <... clone resumed>, parent_tid=[1162], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1162 [pid 1160] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1160] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1162 attached [pid 1162] set_robust_list(0x7fc84e07e9e0, 24 [pid 1161] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1162] <... set_robust_list resumed>) = 0 [pid 1162] umount2("./file0", MNT_DETACH) = 0 [pid 1162] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1160] exit_group(0 [pid 1162] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] <... exit_group resumed>) = ? [pid 1162] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1161] <... futex resumed>) = ? [pid 1161] +++ exited with 0 +++ [pid 1162] +++ exited with 0 +++ [pid 1160] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1160, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1163 ./strace-static-x86_64: Process 1163 attached [pid 1163] set_robust_list(0x5555564465e0, 24) = 0 [pid 1163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1163] setpgid(0, 0) = 0 [pid 1163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1163] write(3, "1000", 4) = 4 [pid 1163] close(3) = 0 [pid 1163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1163] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1163] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1163] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1164 attached [pid 1164] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1164] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] <... clone resumed>, parent_tid=[1164], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1164 [pid 1163] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1164] <... futex resumed>) = 0 [pid 1164] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1164] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1164] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1164] <... futex resumed>) = 0 [pid 1164] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1163] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1164] <... mount resumed>) = 0 [pid 1164] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1163] <... futex resumed>) = 0 [pid 1163] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1163] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1164] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1164] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1163] <... futex resumed>) = 0 [pid 1164] umount2("./file0", MNT_DETACH [pid 1163] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1164] <... umount2 resumed>) = 0 [pid 1163] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] <... futex resumed>) = 0 [pid 1164] <... futex resumed>) = 0 [pid 1163] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1164] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] <... mmap resumed>) = 0x7fc84e05e000 [pid 1163] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1163] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1165 attached , parent_tid=[1165], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1165 [pid 1165] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1165] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1165] <... futex resumed>) = 0 [pid 1165] umount2("./file0", MNT_DETACH) = 0 [pid 1163] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1165] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] exit_group(0 [pid 1164] <... futex resumed>) = ? [pid 1163] <... exit_group resumed>) = ? [pid 1165] <... futex resumed>) = ? [pid 1165] +++ exited with 0 +++ [pid 1164] +++ exited with 0 +++ [pid 1163] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1163, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1166 ./strace-static-x86_64: Process 1166 attached [pid 1166] set_robust_list(0x5555564465e0, 24) = 0 [pid 1166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1166] setpgid(0, 0) = 0 [pid 1166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1166] write(3, "1000", 4) = 4 [pid 1166] close(3) = 0 [pid 1166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1166] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1166] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1167 attached [pid 1167] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1167] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1166] <... clone resumed>, parent_tid=[1167], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1167 [pid 1166] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1167] mkdir("./file0", 000 [pid 1166] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1167] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1167] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1167] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1166] <... futex resumed>) = 0 [pid 1166] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1167] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1166] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1167] <... mount resumed>) = 0 [pid 1167] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1166] <... futex resumed>) = 0 [pid 1166] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1166] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1167] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1167] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1166] <... futex resumed>) = 0 [pid 1166] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1167] umount2("./file0", MNT_DETACH [pid 1166] <... futex resumed>) = 0 [pid 1166] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1166] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1166] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1168], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1168 [pid 1166] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1166] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1167] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1168 attached [pid 1168] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1168] umount2("./file0", MNT_DETACH [pid 1167] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] <... umount2 resumed>) = 0 [pid 1167] <... futex resumed>) = 0 [pid 1168] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... futex resumed>) = 0 [pid 1166] exit_group(0) = ? [pid 1168] <... futex resumed>) = ? [pid 1168] +++ exited with 0 +++ [pid 1167] +++ exited with 0 +++ [pid 1166] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1166, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1169 ./strace-static-x86_64: Process 1169 attached [pid 1169] set_robust_list(0x5555564465e0, 24) = 0 [pid 1169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1169] setpgid(0, 0) = 0 [pid 1169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1169] write(3, "1000", 4) = 4 [pid 1169] close(3) = 0 [pid 1169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1169] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1169] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1169] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1170], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1170 [pid 1169] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1169] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1170 attached [pid 1170] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1170] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1170] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] <... futex resumed>) = 0 [pid 1169] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1169] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1170] <... futex resumed>) = 1 [pid 1170] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1170] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] <... futex resumed>) = 0 [pid 1170] <... futex resumed>) = 1 [pid 1169] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1170] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1169] <... futex resumed>) = 0 [pid 1169] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1170] <... mount resumed>) = 0 [pid 1170] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] <... futex resumed>) = 0 [pid 1170] <... futex resumed>) = 1 [pid 1169] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1170] umount2("./file0", MNT_DETACH [pid 1169] <... futex resumed>) = 0 [pid 1169] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1169] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1169] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1170] <... umount2 resumed>) = 0 [pid 1170] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1170] <... futex resumed>) = 0 [pid 1170] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1171 attached [pid 1169] <... clone resumed>, parent_tid=[1171], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1171 [pid 1171] set_robust_list(0x7fc84e07e9e0, 24 [pid 1169] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] <... set_robust_list resumed>) = 0 [pid 1169] <... futex resumed>) = 0 [pid 1171] umount2("./file0", MNT_DETACH [pid 1169] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1171] <... umount2 resumed>) = 0 [pid 1171] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = 1 [pid 1169] exit_group(0 [pid 1171] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1170] <... futex resumed>) = ? [pid 1171] <... futex resumed>) = ? [pid 1169] <... exit_group resumed>) = ? [pid 1170] +++ exited with 0 +++ [pid 1171] +++ exited with 0 +++ [pid 1169] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1169, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1172 ./strace-static-x86_64: Process 1172 attached [pid 1172] set_robust_list(0x5555564465e0, 24) = 0 [pid 1172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1172] setpgid(0, 0) = 0 [pid 1172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1172] write(3, "1000", 4) = 4 [pid 1172] close(3) = 0 [pid 1172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1172] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1172] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1173 attached , parent_tid=[1173], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1173 [pid 1173] set_robust_list(0x7fc84e09f9e0, 24 [pid 1172] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] <... set_robust_list resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1172] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1173] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1173] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1172] <... futex resumed>) = 0 [pid 1172] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1172] <... futex resumed>) = 0 [pid 1172] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1173] <... mount resumed>) = 0 [pid 1173] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] <... futex resumed>) = 0 [pid 1173] <... futex resumed>) = 1 [pid 1172] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1172] <... futex resumed>) = 0 [pid 1172] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1173] <... mount resumed>) = 0 [pid 1173] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] <... futex resumed>) = 0 [pid 1173] <... futex resumed>) = 1 [pid 1172] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] umount2("./file0", MNT_DETACH [pid 1172] <... futex resumed>) = 0 [pid 1172] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1172] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1173] <... umount2 resumed>) = 0 [pid 1172] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1173] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1172] <... clone resumed>, parent_tid=[1174], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1174 ./strace-static-x86_64: Process 1174 attached [pid 1173] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] set_robust_list(0x7fc84e07e9e0, 24 [pid 1172] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1174] <... set_robust_list resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1172] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1174] umount2("./file0", MNT_DETACH) = 0 [pid 1174] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1172] <... futex resumed>) = 0 [pid 1174] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1172] exit_group(0) = ? [pid 1174] <... futex resumed>) = ? [pid 1173] <... futex resumed>) = ? [pid 1174] +++ exited with 0 +++ [pid 1173] +++ exited with 0 +++ [pid 1172] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1172, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1175 ./strace-static-x86_64: Process 1175 attached [pid 1175] set_robust_list(0x5555564465e0, 24) = 0 [pid 1175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1175] setpgid(0, 0) = 0 [pid 1175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1175] write(3, "1000", 4) = 4 [pid 1175] close(3) = 0 [pid 1175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1175] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1175] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1175] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1176 attached , parent_tid=[1176], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1176 [pid 1176] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1176] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1175] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1176] <... futex resumed>) = 0 [pid 1176] mkdir("./file0", 000 [pid 1175] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1176] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1176] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1176] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1175] <... futex resumed>) = 0 [pid 1175] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1176] <... futex resumed>) = 0 [pid 1176] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1175] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1176] <... mount resumed>) = 0 [pid 1176] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] <... futex resumed>) = 0 [pid 1175] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1175] <... futex resumed>) = 0 [pid 1176] <... mount resumed>) = 0 [pid 1176] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1176] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1175] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1175] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1176] <... futex resumed>) = 0 [pid 1175] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] umount2("./file0", MNT_DETACH [pid 1175] <... futex resumed>) = 0 [pid 1175] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1175] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1175] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1177 attached , parent_tid=[1177], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1177 [pid 1177] set_robust_list(0x7fc84e07e9e0, 24 [pid 1175] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... set_robust_list resumed>) = 0 [pid 1175] <... futex resumed>) = 0 [pid 1177] umount2("./file0", MNT_DETACH [pid 1175] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1177] <... umount2 resumed>) = 0 [pid 1177] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... futex resumed>) = 0 [pid 1177] <... futex resumed>) = 1 [pid 1177] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] <... umount2 resumed>) = 0 [pid 1176] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1176] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1175] exit_group(0) = ? [pid 1176] <... futex resumed>) = ? [pid 1176] +++ exited with 0 +++ [pid 1177] <... futex resumed>) = ? [pid 1177] +++ exited with 0 +++ [pid 1175] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1175, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1178 ./strace-static-x86_64: Process 1178 attached [pid 1178] set_robust_list(0x5555564465e0, 24) = 0 [pid 1178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1178] setpgid(0, 0) = 0 [pid 1178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1178] write(3, "1000", 4) = 4 [pid 1178] close(3) = 0 [pid 1178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1178] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1178] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1179 attached [pid 1179] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1178] <... clone resumed>, parent_tid=[1179], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1179 [pid 1178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1178] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1179] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1179] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1178] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1179] <... mount resumed>) = 0 [pid 1179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1178] <... futex resumed>) = 0 [pid 1178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1178] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1179] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1178] <... futex resumed>) = 0 [pid 1179] umount2("./file0", MNT_DETACH [pid 1178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1178] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1178] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1178] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1179] <... umount2 resumed>) = 0 [pid 1179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1178] <... clone resumed>, parent_tid=[1180], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1180 [pid 1179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1178] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1178] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1180 attached [pid 1180] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1180] umount2("./file0", MNT_DETACH) = 0 [pid 1180] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1178] <... futex resumed>) = 0 [pid 1178] exit_group(0) = ? [pid 1180] +++ exited with 0 +++ [pid 1179] <... futex resumed>) = ? [pid 1179] +++ exited with 0 +++ [pid 1178] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1178, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1181 ./strace-static-x86_64: Process 1181 attached [pid 1181] set_robust_list(0x5555564465e0, 24) = 0 [pid 1181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1181] setpgid(0, 0) = 0 [pid 1181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1181] write(3, "1000", 4) = 4 [pid 1181] close(3) = 0 [pid 1181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1181] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1181] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1182 attached , parent_tid=[1182], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1182 [pid 1182] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1182] <... futex resumed>) = 0 [pid 1182] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1182] <... futex resumed>) = 0 [pid 1182] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1181] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1182] <... mount resumed>) = 0 [pid 1182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] <... futex resumed>) = 0 [pid 1181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1182] <... futex resumed>) = 0 [pid 1182] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1181] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1182] <... mount resumed>) = 0 [pid 1182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] <... futex resumed>) = 0 [pid 1181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1182] <... futex resumed>) = 0 [pid 1181] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1182] umount2("./file0", MNT_DETACH [pid 1181] <... futex resumed>) = 0 [pid 1181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1182] <... umount2 resumed>) = 0 [pid 1182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1181] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1183 attached , parent_tid=[1183], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1183 [pid 1183] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1183] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1183] <... futex resumed>) = 0 [pid 1183] umount2("./file0", MNT_DETACH [pid 1181] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1183] <... umount2 resumed>) = 0 [pid 1183] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1183] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] <... futex resumed>) = 0 [pid 1181] exit_group(0) = ? [pid 1182] <... futex resumed>) = ? [pid 1182] +++ exited with 0 +++ [pid 1183] <... futex resumed>) = ? [pid 1183] +++ exited with 0 +++ [pid 1181] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1181, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1184 ./strace-static-x86_64: Process 1184 attached [pid 1184] set_robust_list(0x5555564465e0, 24) = 0 [pid 1184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1184] setpgid(0, 0) = 0 [pid 1184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1184] write(3, "1000", 4) = 4 [pid 1184] close(3) = 0 [pid 1184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1184] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1184] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1185 attached , parent_tid=[1185], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1185 [pid 1185] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1185] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1185] <... futex resumed>) = 0 [pid 1185] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1185] <... futex resumed>) = 0 [pid 1185] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1185] <... futex resumed>) = 0 [pid 1184] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1185] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1184] <... futex resumed>) = 0 [pid 1184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1185] <... futex resumed>) = 0 [pid 1184] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 1 [pid 1184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] umount2("./file0", MNT_DETACH [pid 1184] <... futex resumed>) = 0 [pid 1184] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1184] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1185] <... umount2 resumed>) = 0 [pid 1184] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1186 attached [pid 1185] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1184] <... clone resumed>, parent_tid=[1186], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1186 [pid 1186] set_robust_list(0x7fc84e07e9e0, 24 [pid 1184] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1186] <... set_robust_list resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1186] umount2("./file0", MNT_DETACH [pid 1184] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1186] <... umount2 resumed>) = 0 [pid 1186] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1184] <... futex resumed>) = 0 [pid 1184] exit_group(0) = ? [pid 1185] <... futex resumed>) = ? [pid 1186] +++ exited with 0 +++ [pid 1185] +++ exited with 0 +++ [pid 1184] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1184, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1187 ./strace-static-x86_64: Process 1187 attached [pid 1187] set_robust_list(0x5555564465e0, 24) = 0 [pid 1187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1187] setpgid(0, 0) = 0 [pid 1187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1187] write(3, "1000", 4) = 4 [pid 1187] close(3) = 0 [pid 1187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1187] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1187] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1188], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1188 [pid 1187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1188 attached [pid 1188] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1188] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] <... futex resumed>) = 0 [pid 1187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1188] <... futex resumed>) = 1 [pid 1188] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] <... futex resumed>) = 0 [pid 1187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1188] <... futex resumed>) = 1 [pid 1188] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] <... futex resumed>) = 0 [pid 1188] <... futex resumed>) = 1 [pid 1187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] umount2("./file0", MNT_DETACH [pid 1187] <... futex resumed>) = 0 [pid 1187] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1187] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1188] <... umount2 resumed>) = 0 [pid 1187] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] <... clone resumed>, parent_tid=[1189], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1189 [pid 1187] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1187] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1188] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1189 attached [pid 1189] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1189] umount2("./file0", MNT_DETACH) = 0 [pid 1189] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1187] <... futex resumed>) = 0 [pid 1187] exit_group(0) = ? [pid 1188] <... futex resumed>) = ? [pid 1188] +++ exited with 0 +++ [pid 1189] +++ exited with 0 +++ [pid 1187] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1187, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1190 ./strace-static-x86_64: Process 1190 attached [pid 1190] set_robust_list(0x5555564465e0, 24) = 0 [pid 1190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1190] setpgid(0, 0) = 0 [pid 1190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1190] write(3, "1000", 4) = 4 [pid 1190] close(3) = 0 [pid 1190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1190] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1190] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1191 attached , parent_tid=[1191], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1191 [pid 1191] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1191] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1191] mkdir("./file0", 000 [pid 1190] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1191] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1191] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1191] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1190] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1191] <... mount resumed>) = 0 [pid 1191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1191] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1190] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1191] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1190] <... futex resumed>) = 0 [pid 1190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1190] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1190] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1191] umount2("./file0", MNT_DETACH [pid 1190] <... mprotect resumed>) = 0 [pid 1190] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1192], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1192 [pid 1190] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1191] <... umount2 resumed>) = 0 [pid 1190] <... futex resumed>) = 0 [pid 1190] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1192 attached [pid 1192] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1192] umount2("./file0", MNT_DETACH [pid 1191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1192] <... umount2 resumed>) = 0 [pid 1192] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1191] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1190] <... futex resumed>) = 0 [pid 1190] exit_group(0) = ? [pid 1191] <... futex resumed>) = ? [pid 1192] <... futex resumed>) = ? [pid 1191] +++ exited with 0 +++ [pid 1192] +++ exited with 0 +++ [pid 1190] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1190, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1193 ./strace-static-x86_64: Process 1193 attached [pid 1193] set_robust_list(0x5555564465e0, 24) = 0 [pid 1193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1193] setpgid(0, 0) = 0 [pid 1193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1193] write(3, "1000", 4) = 4 [pid 1193] close(3) = 0 [pid 1193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1193] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1193] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1194 attached [pid 1194] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1194] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1193] <... clone resumed>, parent_tid=[1194], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1194 [pid 1193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1193] <... futex resumed>) = 1 [pid 1194] mkdir("./file0", 000 [pid 1193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1194] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1194] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1193] <... futex resumed>) = 0 [pid 1193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1194] <... futex resumed>) = 0 [pid 1194] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1194] <... mount resumed>) = 0 [pid 1194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1193] <... futex resumed>) = 0 [pid 1194] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1194] <... mount resumed>) = 0 [pid 1194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1193] <... futex resumed>) = 0 [pid 1194] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1193] <... futex resumed>) = 0 [pid 1193] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1194] umount2("./file0", MNT_DETACH [pid 1193] <... mmap resumed>) = 0x7fc84e05e000 [pid 1193] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1193] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1194] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1195 attached [pid 1193] <... clone resumed>, parent_tid=[1195], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1195 [pid 1193] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1193] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1194] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1195] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1195] umount2("./file0", MNT_DETACH) = 0 [pid 1195] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1193] <... futex resumed>) = 0 [pid 1193] exit_group(0) = ? [pid 1194] <... futex resumed>) = ? [pid 1194] +++ exited with 0 +++ [pid 1195] +++ exited with 0 +++ [pid 1193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1193, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1196 ./strace-static-x86_64: Process 1196 attached [pid 1196] set_robust_list(0x5555564465e0, 24) = 0 [pid 1196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1196] setpgid(0, 0) = 0 [pid 1196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1196] write(3, "1000", 4) = 4 [pid 1196] close(3) = 0 [pid 1196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1196] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1196] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1197 attached , parent_tid=[1197], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1197 [pid 1196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1197] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1196] <... futex resumed>) = 0 [pid 1196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1196] <... futex resumed>) = 0 [pid 1196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] <... mount resumed>) = 0 [pid 1197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1196] <... futex resumed>) = 0 [pid 1196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1196] <... futex resumed>) = 0 [pid 1196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1196] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1196] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1196] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1197] umount2("./file0", MNT_DETACH [pid 1196] <... clone resumed>, parent_tid=[1198], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1198 [pid 1196] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1196] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1198 attached [pid 1198] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1198] umount2("./file0", MNT_DETACH) = 0 [pid 1198] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1196] <... futex resumed>) = 0 [pid 1198] <... futex resumed>) = 1 [pid 1198] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1197] <... umount2 resumed>) = 0 [pid 1197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1196] exit_group(0) = ? [pid 1197] <... futex resumed>) = ? [pid 1198] <... futex resumed>) = ? [pid 1198] +++ exited with 0 +++ [pid 1197] +++ exited with 0 +++ [pid 1196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1196, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1199 ./strace-static-x86_64: Process 1199 attached [pid 1199] set_robust_list(0x5555564465e0, 24) = 0 [pid 1199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1199] setpgid(0, 0) = 0 [pid 1199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1199] write(3, "1000", 4) = 4 [pid 1199] close(3) = 0 [pid 1199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1199] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1199] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1200 attached , parent_tid=[1200], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1200 [pid 1200] set_robust_list(0x7fc84e09f9e0, 24 [pid 1199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] <... set_robust_list resumed>) = 0 [pid 1199] <... futex resumed>) = 0 [pid 1200] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1200] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1200] <... mount resumed>) = 0 [pid 1200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1199] <... futex resumed>) = 0 [pid 1199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1200] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1200] <... mount resumed>) = 0 [pid 1200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1199] <... futex resumed>) = 0 [pid 1199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1199] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] umount2("./file0", MNT_DETACH [pid 1199] <... futex resumed>) = 0 [pid 1199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1200] <... umount2 resumed>) = 0 [pid 1199] <... mmap resumed>) = 0x7fc84e05e000 [pid 1200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1199] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1199] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1201 attached , parent_tid=[1201], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1201 [pid 1201] set_robust_list(0x7fc84e07e9e0, 24 [pid 1199] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] <... set_robust_list resumed>) = 0 [pid 1199] <... futex resumed>) = 0 [pid 1201] umount2("./file0", MNT_DETACH [pid 1199] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1201] <... umount2 resumed>) = 0 [pid 1201] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1199] <... futex resumed>) = 0 [pid 1199] exit_group(0 [pid 1201] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1199] <... exit_group resumed>) = ? [pid 1200] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1201] <... futex resumed>) = ? [pid 1200] +++ exited with 0 +++ [pid 1201] +++ exited with 0 +++ [pid 1199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1199, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1202 attached , child_tidptr=0x5555564465d0) = 1202 [pid 1202] set_robust_list(0x5555564465e0, 24) = 0 [pid 1202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1202] setpgid(0, 0) = 0 [pid 1202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1202] write(3, "1000", 4) = 4 [pid 1202] close(3) = 0 [pid 1202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1202] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1202] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1203], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1203 [pid 1202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1203 attached [pid 1203] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1203] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 0 [pid 1202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... futex resumed>) = 1 [pid 1203] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 0 [pid 1202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... futex resumed>) = 1 [pid 1203] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 0 [pid 1202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1202] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1202] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1202] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1204 attached [pid 1203] <... futex resumed>) = 1 [pid 1203] umount2("./file0", MNT_DETACH [pid 1204] set_robust_list(0x7fc84e07e9e0, 24 [pid 1202] <... clone resumed>, parent_tid=[1204], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1204 [pid 1203] <... umount2 resumed>) = 0 [pid 1203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1204] <... set_robust_list resumed>) = 0 [pid 1202] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] umount2("./file0", MNT_DETACH [pid 1202] <... futex resumed>) = 0 [pid 1202] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] <... umount2 resumed>) = 0 [pid 1204] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1202] <... futex resumed>) = 0 [pid 1202] exit_group(0) = ? [pid 1204] +++ exited with 0 +++ [pid 1203] <... futex resumed>) = ? [pid 1203] +++ exited with 0 +++ [pid 1202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1202, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1205 ./strace-static-x86_64: Process 1205 attached [pid 1205] set_robust_list(0x5555564465e0, 24) = 0 [pid 1205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1205] setpgid(0, 0) = 0 [pid 1205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1205] write(3, "1000", 4) = 4 [pid 1205] close(3) = 0 [pid 1205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1205] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1205] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1206 attached [pid 1206] set_robust_list(0x7fc84e09f9e0, 24 [pid 1205] <... clone resumed>, parent_tid=[1206], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1206 [pid 1206] <... set_robust_list resumed>) = 0 [pid 1206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1206] <... futex resumed>) = 0 [pid 1206] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1206] <... futex resumed>) = 0 [pid 1206] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1206] <... futex resumed>) = 0 [pid 1206] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1206] <... mount resumed>) = 0 [pid 1206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] <... futex resumed>) = 0 [pid 1205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1206] <... futex resumed>) = 0 [pid 1206] umount2("./file0", MNT_DETACH [pid 1205] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... umount2 resumed>) = 0 [pid 1206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] <... futex resumed>) = 0 [pid 1205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1205] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1205] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1207 attached [pid 1207] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1207] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] <... clone resumed>, parent_tid=[1207], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1207 [pid 1205] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1207] <... futex resumed>) = 0 [pid 1207] umount2("./file0", MNT_DETACH [pid 1205] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1207] <... umount2 resumed>) = 0 [pid 1207] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1207] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] exit_group(0 [pid 1206] <... futex resumed>) = ? [pid 1205] <... exit_group resumed>) = ? [pid 1206] +++ exited with 0 +++ [pid 1207] <... futex resumed>) = ? [pid 1207] +++ exited with 0 +++ [pid 1205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1205, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1208 ./strace-static-x86_64: Process 1208 attached [pid 1208] set_robust_list(0x5555564465e0, 24) = 0 [pid 1208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1208] setpgid(0, 0) = 0 [pid 1208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1208] write(3, "1000", 4) = 4 [pid 1208] close(3) = 0 [pid 1208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1208] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1208] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1209], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1209 [pid 1208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1209 attached [pid 1209] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1209] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... futex resumed>) = 0 [pid 1208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1209] <... futex resumed>) = 1 [pid 1209] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... futex resumed>) = 0 [pid 1209] <... futex resumed>) = 1 [pid 1208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1208] <... futex resumed>) = 0 [pid 1208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1209] <... mount resumed>) = 0 [pid 1209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... futex resumed>) = 0 [pid 1209] <... futex resumed>) = 1 [pid 1208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] umount2("./file0", MNT_DETACH [pid 1208] <... futex resumed>) = 0 [pid 1208] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1208] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1209] <... umount2 resumed>) = 0 [pid 1208] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1208] <... clone resumed>, parent_tid=[1210], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1210 ./strace-static-x86_64: Process 1210 attached [pid 1209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1210] set_robust_list(0x7fc84e07e9e0, 24 [pid 1208] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] <... set_robust_list resumed>) = 0 [pid 1208] <... futex resumed>) = 0 [pid 1210] umount2("./file0", MNT_DETACH [pid 1208] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] <... umount2 resumed>) = 0 [pid 1210] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1208] exit_group(0 [pid 1210] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1208] <... exit_group resumed>) = ? [pid 1209] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1210] <... futex resumed>) = ? [pid 1209] +++ exited with 0 +++ [pid 1210] +++ exited with 0 +++ [pid 1208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1208, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1211 ./strace-static-x86_64: Process 1211 attached [pid 1211] set_robust_list(0x5555564465e0, 24) = 0 [pid 1211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1211] setpgid(0, 0) = 0 [pid 1211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1211] write(3, "1000", 4) = 4 [pid 1211] close(3) = 0 [pid 1211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1211] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1211] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1212], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1212 [pid 1211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1212 attached [pid 1212] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1212] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1211] <... futex resumed>) = 0 [pid 1211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] <... futex resumed>) = 1 [pid 1212] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1211] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1211] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1213 attached [pid 1212] umount2("./file0", MNT_DETACH [pid 1211] <... clone resumed>, parent_tid=[1213], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1213 [pid 1211] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] <... umount2 resumed>) = 0 [pid 1213] set_robust_list(0x7fc84e07e9e0, 24 [pid 1212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... set_robust_list resumed>) = 0 [pid 1212] <... futex resumed>) = 0 [pid 1213] umount2("./file0", MNT_DETACH [pid 1212] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1213] <... umount2 resumed>) = 0 [pid 1213] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1211] exit_group(0 [pid 1212] <... futex resumed>) = ? [pid 1211] <... exit_group resumed>) = ? [pid 1212] +++ exited with 0 +++ [pid 1213] +++ exited with 0 +++ [pid 1211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1211, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1214 ./strace-static-x86_64: Process 1214 attached [pid 1214] set_robust_list(0x5555564465e0, 24) = 0 [pid 1214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1214] setpgid(0, 0) = 0 [pid 1214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1214] write(3, "1000", 4) = 4 [pid 1214] close(3) = 0 [pid 1214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1214] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1214] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1215], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1215 ./strace-static-x86_64: Process 1215 attached [pid 1215] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1215] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1215] <... futex resumed>) = 0 [pid 1215] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1215] <... futex resumed>) = 0 [pid 1215] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1215] <... mount resumed>) = 0 [pid 1215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1214] <... futex resumed>) = 0 [pid 1214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1215] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1214] <... futex resumed>) = 0 [pid 1214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1214] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1214] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1214] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1215] umount2("./file0", MNT_DETACH [pid 1214] <... clone resumed>, parent_tid=[1216], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1216 [pid 1214] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1214] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1215] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1216 attached [pid 1216] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1216] umount2("./file0", MNT_DETACH [pid 1215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1216] <... umount2 resumed>) = 0 [pid 1216] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] <... futex resumed>) = 0 [pid 1214] exit_group(0) = ? [pid 1216] <... futex resumed>) = ? [pid 1216] +++ exited with 0 +++ [pid 1215] <... futex resumed>) = ? [pid 1215] +++ exited with 0 +++ [pid 1214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1214, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1217 attached , child_tidptr=0x5555564465d0) = 1217 [pid 1217] set_robust_list(0x5555564465e0, 24) = 0 [pid 1217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1217] setpgid(0, 0) = 0 [pid 1217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1217] write(3, "1000", 4) = 4 [pid 1217] close(3) = 0 [pid 1217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1217] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1217] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1218 attached , parent_tid=[1218], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1218 [pid 1218] set_robust_list(0x7fc84e09f9e0, 24 [pid 1217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... set_robust_list resumed>) = 0 [pid 1217] <... futex resumed>) = 0 [pid 1217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1218] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1218] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1217] <... futex resumed>) = 0 [pid 1217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1218] <... mount resumed>) = 0 [pid 1218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1217] <... futex resumed>) = 0 [pid 1218] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1218] <... mount resumed>) = 0 [pid 1218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1218] umount2("./file0", MNT_DETACH [pid 1217] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1217] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1218] <... umount2 resumed>) = 0 [pid 1217] <... mprotect resumed>) = 0 [pid 1217] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] <... clone resumed>, parent_tid=[1219], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1219 ./strace-static-x86_64: Process 1219 attached [pid 1218] <... futex resumed>) = 0 [pid 1217] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] set_robust_list(0x7fc84e07e9e0, 24 [pid 1218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1217] <... futex resumed>) = 0 [pid 1217] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1219] <... set_robust_list resumed>) = 0 [pid 1219] umount2("./file0", MNT_DETACH) = 0 [pid 1219] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1217] exit_group(0) = ? [pid 1218] <... futex resumed>) = ? [pid 1218] +++ exited with 0 +++ [pid 1219] +++ exited with 0 +++ [pid 1217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1217, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1220 ./strace-static-x86_64: Process 1220 attached [pid 1220] set_robust_list(0x5555564465e0, 24) = 0 [pid 1220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1220] setpgid(0, 0) = 0 [pid 1220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1220] write(3, "1000", 4) = 4 [pid 1220] close(3) = 0 [pid 1220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1220] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1220] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1221], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1221 [pid 1220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1221 attached [pid 1221] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1221] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] <... futex resumed>) = 0 [pid 1220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... futex resumed>) = 1 [pid 1221] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1220] <... futex resumed>) = 0 [pid 1220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1220] <... futex resumed>) = 0 [pid 1221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1220] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1220] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1221] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 1222 attached [pid 1221] umount2("./file0", MNT_DETACH [pid 1220] <... clone resumed>, parent_tid=[1222], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1222 [pid 1220] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... umount2 resumed>) = 0 [pid 1221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] set_robust_list(0x7fc84e07e9e0, 24 [pid 1221] <... futex resumed>) = 0 [pid 1222] <... set_robust_list resumed>) = 0 [pid 1221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1222] umount2("./file0", MNT_DETACH) = 0 [pid 1222] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1220] <... futex resumed>) = 0 [pid 1220] exit_group(0) = ? [pid 1221] <... futex resumed>) = ? [pid 1221] +++ exited with 0 +++ [pid 1222] +++ exited with 0 +++ [pid 1220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1220, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1223 ./strace-static-x86_64: Process 1223 attached [pid 1223] set_robust_list(0x5555564465e0, 24) = 0 [pid 1223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1223] setpgid(0, 0) = 0 [pid 1223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1223] write(3, "1000", 4) = 4 [pid 1223] close(3) = 0 [pid 1223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1223] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1223] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1224 attached [pid 1224] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1223] <... clone resumed>, parent_tid=[1224], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1224 [pid 1223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1224] <... futex resumed>) = 0 [pid 1224] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1224] <... futex resumed>) = 0 [pid 1224] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1224] <... futex resumed>) = 0 [pid 1224] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... mount resumed>) = 0 [pid 1224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1224] <... futex resumed>) = 0 [pid 1223] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] umount2("./file0", MNT_DETACH [pid 1223] <... futex resumed>) = 0 [pid 1223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1224] <... umount2 resumed>) = 0 [pid 1223] <... mmap resumed>) = 0x7fc84e05e000 [pid 1224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1224] <... futex resumed>) = 0 [pid 1223] <... mprotect resumed>) = 0 [pid 1224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1223] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1225 attached , parent_tid=[1225], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1225 [pid 1225] set_robust_list(0x7fc84e07e9e0, 24 [pid 1223] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1225] <... set_robust_list resumed>) = 0 [pid 1223] <... futex resumed>) = 0 [pid 1225] umount2("./file0", MNT_DETACH [pid 1223] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1225] <... umount2 resumed>) = 0 [pid 1225] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1223] <... futex resumed>) = 0 [pid 1223] exit_group(0 [pid 1225] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1223] <... exit_group resumed>) = ? [pid 1224] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1225] <... futex resumed>) = ? [pid 1224] +++ exited with 0 +++ [pid 1225] +++ exited with 0 +++ [pid 1223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1223, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1226 ./strace-static-x86_64: Process 1226 attached [pid 1226] set_robust_list(0x5555564465e0, 24) = 0 [pid 1226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1226] setpgid(0, 0) = 0 [pid 1226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1226] write(3, "1000", 4) = 4 [pid 1226] close(3) = 0 [pid 1226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1226] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1226] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1227 attached [pid 1227] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1226] <... clone resumed>, parent_tid=[1227], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1227 [pid 1226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1227] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1227] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1227] <... mount resumed>) = 0 [pid 1227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1226] <... futex resumed>) = 0 [pid 1227] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1227] <... mount resumed>) = 0 [pid 1227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1226] <... futex resumed>) = 0 [pid 1226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1226] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] umount2("./file0", MNT_DETACH [pid 1226] <... futex resumed>) = 0 [pid 1226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1226] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1226] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1228], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1228 [pid 1227] <... umount2 resumed>) = 0 [pid 1226] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1226] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1228 attached [pid 1228] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1228] umount2("./file0", MNT_DETACH [pid 1227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1228] <... umount2 resumed>) = 0 [pid 1228] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1226] <... futex resumed>) = 0 [pid 1226] exit_group(0) = ? [pid 1227] <... futex resumed>) = ? [pid 1227] +++ exited with 0 +++ [pid 1228] <... futex resumed>) = ? [pid 1228] +++ exited with 0 +++ [pid 1226] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1226, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1229 ./strace-static-x86_64: Process 1229 attached [pid 1229] set_robust_list(0x5555564465e0, 24) = 0 [pid 1229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1229] setpgid(0, 0) = 0 [pid 1229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1229] write(3, "1000", 4) = 4 [pid 1229] close(3) = 0 [pid 1229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1229] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1229] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1230 attached , parent_tid=[1230], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1230 [pid 1230] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1230] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1230] <... futex resumed>) = 0 [pid 1229] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1230] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1229] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1230] <... futex resumed>) = 0 [pid 1230] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1229] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1230] <... mount resumed>) = 0 [pid 1230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1230] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1229] <... futex resumed>) = 0 [pid 1229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1230] <... futex resumed>) = 0 [pid 1229] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1230] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1229] <... futex resumed>) = 0 [pid 1229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] umount2("./file0", MNT_DETACH [pid 1229] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1229] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1229] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1230] <... umount2 resumed>) = 0 [pid 1230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1229] <... clone resumed>, parent_tid=[1231], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1231 [pid 1230] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1229] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1229] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1231 attached [pid 1231] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1231] umount2("./file0", MNT_DETACH) = 0 [pid 1231] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1229] <... futex resumed>) = 0 [pid 1231] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1229] exit_group(0) = ? [pid 1230] <... futex resumed>) = ? [pid 1230] +++ exited with 0 +++ [pid 1231] <... futex resumed>) = ? [pid 1231] +++ exited with 0 +++ [pid 1229] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1229, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1232 ./strace-static-x86_64: Process 1232 attached [pid 1232] set_robust_list(0x5555564465e0, 24) = 0 [pid 1232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1232] setpgid(0, 0) = 0 [pid 1232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1232] write(3, "1000", 4) = 4 [pid 1232] close(3) = 0 [pid 1232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1232] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1232] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1233 attached [pid 1233] set_robust_list(0x7fc84e09f9e0, 24 [pid 1232] <... clone resumed>, parent_tid=[1233], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1233 [pid 1233] <... set_robust_list resumed>) = 0 [pid 1233] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1233] <... futex resumed>) = 0 [pid 1232] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1233] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1233] <... futex resumed>) = 0 [pid 1233] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1232] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] <... mount resumed>) = 0 [pid 1233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1232] <... futex resumed>) = 0 [pid 1233] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1232] <... futex resumed>) = 0 [pid 1233] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1232] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] <... mount resumed>) = 0 [pid 1233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1232] <... futex resumed>) = 0 [pid 1233] umount2("./file0", MNT_DETACH [pid 1232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1233] <... umount2 resumed>) = 0 [pid 1232] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1232] <... futex resumed>) = 0 [pid 1233] <... futex resumed>) = 0 [pid 1232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1233] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1232] <... mmap resumed>) = 0x7fc84e05e000 [pid 1232] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1232] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1234 attached , parent_tid=[1234], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1234 [pid 1234] set_robust_list(0x7fc84e07e9e0, 24 [pid 1232] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] <... set_robust_list resumed>) = 0 [pid 1232] <... futex resumed>) = 0 [pid 1234] umount2("./file0", MNT_DETACH [pid 1232] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1234] <... umount2 resumed>) = 0 [pid 1234] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1234] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1232] <... futex resumed>) = 0 [pid 1232] exit_group(0 [pid 1233] <... futex resumed>) = 231 [pid 1232] <... exit_group resumed>) = ? [pid 1234] <... futex resumed>) = ? [pid 1234] +++ exited with 0 +++ [pid 1233] +++ exited with 0 +++ [pid 1232] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1232, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1235 ./strace-static-x86_64: Process 1235 attached [pid 1235] set_robust_list(0x5555564465e0, 24) = 0 [pid 1235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1235] setpgid(0, 0) = 0 [pid 1235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1235] write(3, "1000", 4) = 4 [pid 1235] close(3) = 0 [pid 1235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1235] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1235] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1236 attached , parent_tid=[1236], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1236 [pid 1236] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1236] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1236] <... futex resumed>) = 0 [pid 1236] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1236] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1236] <... futex resumed>) = 0 [pid 1236] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1236] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1236] <... futex resumed>) = 0 [pid 1236] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1235] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1236] <... mount resumed>) = 0 [pid 1236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1236] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] <... futex resumed>) = 0 [pid 1235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1236] <... futex resumed>) = 0 [pid 1236] umount2("./file0", MNT_DETACH) = 0 [pid 1235] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1236] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] <... futex resumed>) = 0 [pid 1235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1235] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1235] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1237 attached [pid 1237] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1237] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] <... clone resumed>, parent_tid=[1237], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1237 [pid 1235] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1237] umount2("./file0", MNT_DETACH) = 0 [pid 1235] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1237] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1237] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1235] exit_group(0 [pid 1236] <... futex resumed>) = ? [pid 1235] <... exit_group resumed>) = ? [pid 1236] +++ exited with 0 +++ [pid 1237] <... futex resumed>) = ? [pid 1237] +++ exited with 0 +++ [pid 1235] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1235, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1238 ./strace-static-x86_64: Process 1238 attached [pid 1238] set_robust_list(0x5555564465e0, 24) = 0 [pid 1238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1238] setpgid(0, 0) = 0 [pid 1238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1238] write(3, "1000", 4) = 4 [pid 1238] close(3) = 0 [pid 1238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1238] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1238] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1239], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1239 [pid 1238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1238] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1239 attached [pid 1239] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1239] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] <... futex resumed>) = 0 [pid 1238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1238] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1239] <... futex resumed>) = 1 [pid 1239] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] <... futex resumed>) = 0 [pid 1238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1238] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1239] <... futex resumed>) = 1 [pid 1239] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] <... futex resumed>) = 0 [pid 1239] <... futex resumed>) = 1 [pid 1238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] umount2("./file0", MNT_DETACH [pid 1238] <... futex resumed>) = 0 [pid 1238] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1238] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1239] <... umount2 resumed>) = 0 [pid 1238] <... mprotect resumed>) = 0 [pid 1239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1239] <... futex resumed>) = 0 [pid 1239] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1240 attached [pid 1238] <... clone resumed>, parent_tid=[1240], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1240 [pid 1240] set_robust_list(0x7fc84e07e9e0, 24 [pid 1238] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1240] <... set_robust_list resumed>) = 0 [pid 1238] <... futex resumed>) = 0 [pid 1240] umount2("./file0", MNT_DETACH [pid 1238] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1240] <... umount2 resumed>) = 0 [pid 1240] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1238] <... futex resumed>) = 0 [pid 1238] exit_group(0 [pid 1240] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1238] <... exit_group resumed>) = ? [pid 1239] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1240] <... futex resumed>) = ? [pid 1239] +++ exited with 0 +++ [pid 1240] +++ exited with 0 +++ [pid 1238] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1238, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1241 ./strace-static-x86_64: Process 1241 attached [pid 1241] set_robust_list(0x5555564465e0, 24) = 0 [pid 1241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1241] setpgid(0, 0) = 0 [pid 1241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1241] write(3, "1000", 4) = 4 [pid 1241] close(3) = 0 [pid 1241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1241] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1241] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1242 attached , parent_tid=[1242], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1242 [pid 1242] set_robust_list(0x7fc84e09f9e0, 24 [pid 1241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... set_robust_list resumed>) = 0 [pid 1241] <... futex resumed>) = 0 [pid 1241] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1241] <... futex resumed>) = 0 [pid 1242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1241] <... futex resumed>) = 0 [pid 1241] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1241] <... futex resumed>) = 0 [pid 1242] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1241] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] <... mount resumed>) = 0 [pid 1242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1241] <... futex resumed>) = 0 [pid 1241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1241] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1241] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1241] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1242] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1243 attached [pid 1241] <... clone resumed>, parent_tid=[1243], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1243 [pid 1241] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1241] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] <... umount2 resumed>) = 0 [pid 1243] set_robust_list(0x7fc84e07e9e0, 24 [pid 1242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1243] <... set_robust_list resumed>) = 0 [pid 1242] <... futex resumed>) = 0 [pid 1243] umount2("./file0", MNT_DETACH [pid 1242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1243] <... umount2 resumed>) = 0 [pid 1243] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... futex resumed>) = 0 [pid 1241] exit_group(0) = ? [pid 1242] <... futex resumed>) = ? [pid 1243] <... futex resumed>) = ? [pid 1242] +++ exited with 0 +++ [pid 1243] +++ exited with 0 +++ [pid 1241] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1241, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1244 ./strace-static-x86_64: Process 1244 attached [pid 1244] set_robust_list(0x5555564465e0, 24) = 0 [pid 1244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1244] setpgid(0, 0) = 0 [pid 1244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1244] write(3, "1000", 4) = 4 [pid 1244] close(3) = 0 [pid 1244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1244] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1244] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1245 attached , parent_tid=[1245], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1245 [pid 1245] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1245] <... futex resumed>) = 0 [pid 1245] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1245] <... futex resumed>) = 0 [pid 1245] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1245] <... futex resumed>) = 0 [pid 1245] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1245] <... mount resumed>) = 0 [pid 1245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] <... futex resumed>) = 0 [pid 1244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1245] <... futex resumed>) = 0 [pid 1245] umount2("./file0", MNT_DETACH [pid 1244] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1245] <... umount2 resumed>) = 0 [pid 1245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1244] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1244] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1246 attached [pid 1246] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1246] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] <... clone resumed>, parent_tid=[1246], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1246 [pid 1244] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1246] <... futex resumed>) = 0 [pid 1246] umount2("./file0", MNT_DETACH [pid 1244] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1246] <... umount2 resumed>) = 0 [pid 1246] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1246] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] exit_group(0) = ? [pid 1245] <... futex resumed>) = ? [pid 1245] +++ exited with 0 +++ [pid 1246] <... futex resumed>) = ? [pid 1246] +++ exited with 0 +++ [pid 1244] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1244, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1247 attached , child_tidptr=0x5555564465d0) = 1247 [pid 1247] set_robust_list(0x5555564465e0, 24) = 0 [pid 1247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1247] setpgid(0, 0) = 0 [pid 1247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1247] write(3, "1000", 4) = 4 [pid 1247] close(3) = 0 [pid 1247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1247] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1247] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1247] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1248 attached , parent_tid=[1248], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1248 [pid 1248] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1248] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1247] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1248] <... futex resumed>) = 0 [pid 1248] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1248] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1247] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1247] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1248] <... futex resumed>) = 0 [pid 1248] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1247] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1248] <... mount resumed>) = 0 [pid 1248] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1247] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1247] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1248] <... futex resumed>) = 0 [pid 1248] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1247] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1248] <... mount resumed>) = 0 [pid 1248] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1247] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1247] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1248] <... futex resumed>) = 0 [pid 1248] umount2("./file0", MNT_DETACH) = 0 [pid 1248] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1247] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1248] <... futex resumed>) = 0 [pid 1248] umount2("./file0", MNT_DETACH) = 0 [pid 1248] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1247] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1247] exit_group(0) = ? [pid 1248] <... futex resumed>) = ? [pid 1248] +++ exited with 0 +++ [pid 1247] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1247, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1249 ./strace-static-x86_64: Process 1249 attached [pid 1249] set_robust_list(0x5555564465e0, 24) = 0 [pid 1249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1249] setpgid(0, 0) = 0 [pid 1249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1249] write(3, "1000", 4) = 4 [pid 1249] close(3) = 0 [pid 1249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1249] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1249] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1250], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1250 ./strace-static-x86_64: Process 1250 attached [pid 1250] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1250] <... futex resumed>) = 0 [pid 1250] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1250] <... futex resumed>) = 0 [pid 1250] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... mount resumed>) = 0 [pid 1250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1250] <... futex resumed>) = 0 [pid 1250] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... mount resumed>) = 0 [pid 1250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] <... futex resumed>) = 0 [pid 1249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1249] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1250] <... futex resumed>) = 0 [pid 1250] umount2("./file0", MNT_DETACH [pid 1249] <... futex resumed>) = 0 [pid 1250] <... umount2 resumed>) = 0 [pid 1249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] <... mmap resumed>) = 0x7fc84e05e000 [pid 1249] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1249] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1251 attached , parent_tid=[1251], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1251 [pid 1251] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1251] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1251] <... futex resumed>) = 0 [pid 1251] umount2("./file0", MNT_DETACH) = 0 [pid 1251] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1251] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1249] exit_group(0) = ? [pid 1250] <... futex resumed>) = ? [pid 1250] +++ exited with 0 +++ [pid 1251] <... futex resumed>) = ? [pid 1251] +++ exited with 0 +++ [pid 1249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1252 ./strace-static-x86_64: Process 1252 attached [pid 1252] set_robust_list(0x5555564465e0, 24) = 0 [pid 1252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1252] setpgid(0, 0) = 0 [pid 1252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1252] write(3, "1000", 4) = 4 [pid 1252] close(3) = 0 [pid 1252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1252] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1252] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1253 attached [pid 1253] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] <... clone resumed>, parent_tid=[1253], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1253 [pid 1252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1253] mkdir("./file0", 000 [pid 1252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1253] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1253] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1253] <... mount resumed>) = 0 [pid 1253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1253] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1253] <... mount resumed>) = 0 [pid 1253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] <... futex resumed>) = 0 [pid 1252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1253] umount2("./file0", MNT_DETACH [pid 1252] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] <... umount2 resumed>) = 0 [pid 1253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1252] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1252] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1254 attached , parent_tid=[1254], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1254 [pid 1254] set_robust_list(0x7fc84e07e9e0, 24 [pid 1252] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] <... set_robust_list resumed>) = 0 [pid 1254] umount2("./file0", MNT_DETACH) = 0 [pid 1252] <... futex resumed>) = 0 [pid 1254] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1252] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1254] <... futex resumed>) = 0 [pid 1254] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] exit_group(0) = ? [pid 1253] <... futex resumed>) = ? [pid 1253] +++ exited with 0 +++ [pid 1254] <... futex resumed>) = ? [pid 1254] +++ exited with 0 +++ [pid 1252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1255 ./strace-static-x86_64: Process 1255 attached [pid 1255] set_robust_list(0x5555564465e0, 24) = 0 [pid 1255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1255] setpgid(0, 0) = 0 [pid 1255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1255] write(3, "1000", 4) = 4 [pid 1255] close(3) = 0 [pid 1255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1255] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1255] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1256 attached , parent_tid=[1256], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1256 [pid 1256] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1256] <... futex resumed>) = 0 [pid 1255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1256] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1256] <... futex resumed>) = 0 [pid 1256] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1256] <... mount resumed>) = 0 [pid 1256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] <... futex resumed>) = 0 [pid 1256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1256] <... futex resumed>) = 0 [pid 1255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1256] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] <... futex resumed>) = 0 [pid 1255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1256] <... futex resumed>) = 0 [pid 1255] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] umount2("./file0", MNT_DETACH [pid 1255] <... futex resumed>) = 0 [pid 1255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1256] <... umount2 resumed>) = 0 [pid 1256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] <... mmap resumed>) = 0x7fc84e05e000 [pid 1255] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1255] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1257 attached [pid 1257] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1255] <... clone resumed>, parent_tid=[1257], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1257 [pid 1257] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1255] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] umount2("./file0", MNT_DETACH) = 0 [pid 1257] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1255] <... futex resumed>) = 0 [pid 1257] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] exit_group(0 [pid 1256] <... futex resumed>) = ? [pid 1255] <... exit_group resumed>) = ? [pid 1256] +++ exited with 0 +++ [pid 1257] <... futex resumed>) = ? [pid 1257] +++ exited with 0 +++ [pid 1255] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1258 ./strace-static-x86_64: Process 1258 attached [pid 1258] set_robust_list(0x5555564465e0, 24) = 0 [pid 1258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1258] setpgid(0, 0) = 0 [pid 1258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1258] write(3, "1000", 4) = 4 [pid 1258] close(3) = 0 [pid 1258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1258] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1258] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1259], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1259 [pid 1258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1259 attached [pid 1259] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1259] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1259] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1259] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1258] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1258] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1260], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1260 [pid 1258] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1258] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1260 attached [pid 1260] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1260] umount2("./file0", MNT_DETACH) = 0 [pid 1259] umount2("./file0", MNT_DETACH [pid 1260] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = 1 [pid 1260] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1259] <... umount2 resumed>) = 0 [pid 1259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1259] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1258] exit_group(0) = ? [pid 1259] <... futex resumed>) = ? [pid 1260] <... futex resumed>) = ? [pid 1260] +++ exited with 0 +++ [pid 1259] +++ exited with 0 +++ [pid 1258] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1261 ./strace-static-x86_64: Process 1261 attached [pid 1261] set_robust_list(0x5555564465e0, 24) = 0 [pid 1261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1261] setpgid(0, 0) = 0 [pid 1261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1261] write(3, "1000", 4) = 4 [pid 1261] close(3) = 0 [pid 1261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1261] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1261] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1262 attached [pid 1262] set_robust_list(0x7fc84e09f9e0, 24 [pid 1261] <... clone resumed>, parent_tid=[1262], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1262 [pid 1262] <... set_robust_list resumed>) = 0 [pid 1261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1262] mkdir("./file0", 000 [pid 1261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] <... futex resumed>) = 0 [pid 1262] <... futex resumed>) = 1 [pid 1261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1261] <... futex resumed>) = 0 [pid 1261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... mount resumed>) = 0 [pid 1262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1261] <... futex resumed>) = 0 [pid 1261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1261] <... futex resumed>) = 0 [pid 1261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... mount resumed>) = 0 [pid 1262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] <... futex resumed>) = 0 [pid 1262] <... futex resumed>) = 1 [pid 1261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1261] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1261] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1261] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1263 attached , parent_tid=[1263], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1263 [pid 1263] set_robust_list(0x7fc84e07e9e0, 24 [pid 1261] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1263] <... set_robust_list resumed>) = 0 [pid 1261] <... futex resumed>) = 0 [pid 1263] umount2("./file0", MNT_DETACH [pid 1261] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1263] <... umount2 resumed>) = 0 [pid 1262] umount2("./file0", MNT_DETACH [pid 1263] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1263] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1262] <... umount2 resumed>) = 0 [pid 1261] <... futex resumed>) = 0 [pid 1262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1261] exit_group(0) = ? [pid 1262] <... futex resumed>) = ? [pid 1263] <... futex resumed>) = ? [pid 1262] +++ exited with 0 +++ [pid 1263] +++ exited with 0 +++ [pid 1261] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1261, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1264 ./strace-static-x86_64: Process 1264 attached [pid 1264] set_robust_list(0x5555564465e0, 24) = 0 [pid 1264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1264] setpgid(0, 0) = 0 [pid 1264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1264] write(3, "1000", 4) = 4 [pid 1264] close(3) = 0 [pid 1264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1264] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1264] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1265 attached , parent_tid=[1265], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1265 [pid 1265] set_robust_list(0x7fc84e09f9e0, 24 [pid 1264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... set_robust_list resumed>) = 0 [pid 1264] <... futex resumed>) = 0 [pid 1264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1265] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1264] <... futex resumed>) = 0 [pid 1265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] <... futex resumed>) = 0 [pid 1265] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1265] <... mount resumed>) = 0 [pid 1265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1264] <... futex resumed>) = 0 [pid 1264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1264] <... futex resumed>) = 0 [pid 1264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1265] <... mount resumed>) = 0 [pid 1265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1264] <... futex resumed>) = 0 [pid 1265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] <... futex resumed>) = 0 [pid 1265] umount2("./file0", MNT_DETACH [pid 1264] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1264] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1264] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1265] <... umount2 resumed>) = 0 [pid 1264] <... clone resumed>, parent_tid=[1266], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1266 [pid 1265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1265] <... futex resumed>) = 0 [pid 1264] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1266 attached [pid 1266] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1266] umount2("./file0", MNT_DETACH) = 0 [pid 1266] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1266] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] <... futex resumed>) = 0 [pid 1264] exit_group(0) = ? [pid 1266] <... futex resumed>) = 231 [pid 1265] <... futex resumed>) = ? [pid 1265] +++ exited with 0 +++ [pid 1266] +++ exited with 0 +++ [pid 1264] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1264, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1267 attached , child_tidptr=0x5555564465d0) = 1267 [pid 1267] set_robust_list(0x5555564465e0, 24) = 0 [pid 1267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1267] setpgid(0, 0) = 0 [pid 1267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1267] write(3, "1000", 4) = 4 [pid 1267] close(3) = 0 [pid 1267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1267] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1267] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1268 attached [pid 1268] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1267] <... clone resumed>, parent_tid=[1268], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1268 [pid 1267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1268] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1268] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] <... mount resumed>) = 0 [pid 1268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1268] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1268] umount2("./file0", MNT_DETACH) = 0 [pid 1268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1268] umount2("./file0", MNT_DETACH) = 0 [pid 1267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1267] exit_group(0) = ? [pid 1268] <... futex resumed>) = ? [pid 1268] +++ exited with 0 +++ [pid 1267] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1269 ./strace-static-x86_64: Process 1269 attached [pid 1269] set_robust_list(0x5555564465e0, 24) = 0 [pid 1269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1269] setpgid(0, 0) = 0 [pid 1269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1269] write(3, "1000", 4) = 4 [pid 1269] close(3) = 0 [pid 1269] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1269] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1269] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1269] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1270], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1270 [pid 1269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1269] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1270 attached [pid 1270] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1270] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... futex resumed>) = 0 [pid 1269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1269] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1270] <... futex resumed>) = 1 [pid 1270] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... futex resumed>) = 0 [pid 1269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1269] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1270] <... futex resumed>) = 1 [pid 1270] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1269] <... futex resumed>) = 0 [pid 1269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1269] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1270] umount2("./file0", MNT_DETACH [pid 1269] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1269] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1269] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1271 attached , parent_tid=[1271], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1271 [pid 1270] <... umount2 resumed>) = 0 [pid 1269] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... futex resumed>) = 0 [pid 1271] set_robust_list(0x7fc84e07e9e0, 24 [pid 1270] <... futex resumed>) = 0 [pid 1269] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1271] <... set_robust_list resumed>) = 0 [pid 1270] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1271] umount2("./file0", MNT_DETACH) = 0 [pid 1271] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1269] <... futex resumed>) = 0 [pid 1271] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1269] exit_group(0) = ? [pid 1270] <... futex resumed>) = ? [pid 1271] <... futex resumed>) = ? [pid 1270] +++ exited with 0 +++ [pid 1271] +++ exited with 0 +++ [pid 1269] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1269, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1272 attached , child_tidptr=0x5555564465d0) = 1272 [pid 1272] set_robust_list(0x5555564465e0, 24) = 0 [pid 1272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1272] setpgid(0, 0) = 0 [pid 1272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1272] write(3, "1000", 4) = 4 [pid 1272] close(3) = 0 [pid 1272] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1272] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1272] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1273 attached [pid 1273] set_robust_list(0x7fc84e09f9e0, 24 [pid 1272] <... clone resumed>, parent_tid=[1273], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1273 [pid 1273] <... set_robust_list resumed>) = 0 [pid 1272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1272] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1272] <... futex resumed>) = 0 [pid 1272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1272] <... futex resumed>) = 0 [pid 1272] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] <... mount resumed>) = 0 [pid 1273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1272] <... futex resumed>) = 0 [pid 1272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1272] <... futex resumed>) = 0 [pid 1272] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] <... mount resumed>) = 0 [pid 1273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] <... futex resumed>) = 0 [pid 1273] <... futex resumed>) = 1 [pid 1273] umount2("./file0", MNT_DETACH [pid 1272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1272] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1273] <... umount2 resumed>) = 0 [pid 1272] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] <... mprotect resumed>) = 0 [pid 1273] <... futex resumed>) = 0 [pid 1272] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1274], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1274 [pid 1273] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1274 attached [pid 1274] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1274] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1272] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1272] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1274] umount2("./file0", MNT_DETACH) = 0 [pid 1274] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1274] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1272] <... futex resumed>) = 0 [pid 1272] exit_group(0) = ? [pid 1273] <... futex resumed>) = ? [pid 1274] <... futex resumed>) = ? [pid 1273] +++ exited with 0 +++ [pid 1274] +++ exited with 0 +++ [pid 1272] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1272, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1275 ./strace-static-x86_64: Process 1275 attached [pid 1275] set_robust_list(0x5555564465e0, 24) = 0 [pid 1275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1275] setpgid(0, 0) = 0 [pid 1275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1275] write(3, "1000", 4) = 4 [pid 1275] close(3) = 0 [pid 1275] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1275] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1275] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1275] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1276 attached , parent_tid=[1276], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1276 [pid 1276] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1276] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] <... futex resumed>) = 0 [pid 1276] mkdir("./file0", 000 [pid 1275] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1276] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] <... futex resumed>) = 0 [pid 1276] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1275] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] <... mount resumed>) = 0 [pid 1276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] <... futex resumed>) = 0 [pid 1275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] <... futex resumed>) = 0 [pid 1275] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] <... futex resumed>) = 0 [pid 1275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] <... futex resumed>) = 0 [pid 1275] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] umount2("./file0", MNT_DETACH [pid 1275] <... futex resumed>) = 0 [pid 1275] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1276] <... umount2 resumed>) = 0 [pid 1275] <... mmap resumed>) = 0x7fc84e05e000 [pid 1276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1276] <... futex resumed>) = 0 [pid 1275] <... mprotect resumed>) = 0 [pid 1276] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1277 attached , parent_tid=[1277], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1277 [pid 1277] set_robust_list(0x7fc84e07e9e0, 24 [pid 1275] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] <... set_robust_list resumed>) = 0 [pid 1275] <... futex resumed>) = 0 [pid 1277] umount2("./file0", MNT_DETACH [pid 1275] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1277] <... umount2 resumed>) = 0 [pid 1277] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] <... futex resumed>) = 0 [pid 1277] <... futex resumed>) = 1 [pid 1275] exit_group(0 [pid 1277] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] <... exit_group resumed>) = ? [pid 1276] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1277] <... futex resumed>) = ? [pid 1276] +++ exited with 0 +++ [pid 1277] +++ exited with 0 +++ [pid 1275] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1275, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1278 ./strace-static-x86_64: Process 1278 attached [pid 1278] set_robust_list(0x5555564465e0, 24) = 0 [pid 1278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1278] setpgid(0, 0) = 0 [pid 1278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1278] write(3, "1000", 4) = 4 [pid 1278] close(3) = 0 [pid 1278] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1278] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1278] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1279], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1279 [pid 1278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1278] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1279 attached [pid 1279] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1279] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... futex resumed>) = 0 [pid 1278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1278] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1279] <... futex resumed>) = 1 [pid 1279] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... futex resumed>) = 0 [pid 1278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1278] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1279] <... futex resumed>) = 1 [pid 1279] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... futex resumed>) = 0 [pid 1278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1278] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1278] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1278] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1279] <... futex resumed>) = 1 [pid 1278] <... clone resumed>, parent_tid=[1280], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1280 [pid 1279] umount2("./file0", MNT_DETACH [pid 1278] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1280 attached [pid 1280] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1279] <... umount2 resumed>) = 0 [pid 1279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1279] <... futex resumed>) = 0 [pid 1279] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1280] umount2("./file0", MNT_DETACH) = 0 [pid 1280] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1278] <... futex resumed>) = 0 [pid 1280] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1278] exit_group(0) = ? [pid 1279] <... futex resumed>) = ? [pid 1279] +++ exited with 0 +++ [pid 1280] <... futex resumed>) = ? [pid 1280] +++ exited with 0 +++ [pid 1278] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1278, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1281 ./strace-static-x86_64: Process 1281 attached [pid 1281] set_robust_list(0x5555564465e0, 24) = 0 [pid 1281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1281] setpgid(0, 0) = 0 [pid 1281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1281] write(3, "1000", 4) = 4 [pid 1281] close(3) = 0 [pid 1281] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1281] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1281] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1281] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1282 attached [pid 1282] set_robust_list(0x7fc84e09f9e0, 24 [pid 1281] <... clone resumed>, parent_tid=[1282], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1282 [pid 1282] <... set_robust_list resumed>) = 0 [pid 1281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] mkdir("./file0", 000 [pid 1281] <... futex resumed>) = 0 [pid 1282] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1282] <... futex resumed>) = 0 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1282] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1281] <... futex resumed>) = 0 [pid 1282] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1281] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1282] <... mount resumed>) = 0 [pid 1282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1281] <... futex resumed>) = 0 [pid 1282] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1281] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1282] <... mount resumed>) = 0 [pid 1282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1281] <... futex resumed>) = 0 [pid 1282] umount2("./file0", MNT_DETACH [pid 1281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1281] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1281] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1282] <... umount2 resumed>) = 0 [pid 1281] <... mmap resumed>) = 0x7fc84e05e000 [pid 1282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1282] <... futex resumed>) = 0 [pid 1281] <... mprotect resumed>) = 0 [pid 1281] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1282] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1284 attached [pid 1284] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1284] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1281] <... clone resumed>, parent_tid=[1284], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1284 [pid 1281] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1284] <... futex resumed>) = 0 [pid 1284] umount2("./file0", MNT_DETACH) = 0 [pid 1284] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1284] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1281] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1281] exit_group(0 [pid 1282] <... futex resumed>) = ? [pid 1281] <... exit_group resumed>) = ? [pid 1284] <... futex resumed>) = ? [pid 1284] +++ exited with 0 +++ [pid 1282] +++ exited with 0 +++ [pid 1281] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1281, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1285 ./strace-static-x86_64: Process 1285 attached [pid 1285] set_robust_list(0x5555564465e0, 24) = 0 [pid 1285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1285] setpgid(0, 0) = 0 [pid 1285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1285] write(3, "1000", 4) = 4 [pid 1285] close(3) = 0 [pid 1285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1285] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1285] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1286 attached , parent_tid=[1286], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1286 [pid 1286] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1286] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1286] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1286] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1286] <... futex resumed>) = 0 [pid 1286] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1286] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1286] <... mount resumed>) = 0 [pid 1286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1285] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1286] umount2("./file0", MNT_DETACH [pid 1285] <... futex resumed>) = 0 [pid 1285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1286] <... umount2 resumed>) = 0 [pid 1286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1286] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... mmap resumed>) = 0x7fc84e05e000 [pid 1285] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1285] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1287 attached , parent_tid=[1287], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1287 [pid 1287] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1287] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] <... futex resumed>) = 0 [pid 1287] umount2("./file0", MNT_DETACH [pid 1285] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1287] <... umount2 resumed>) = 0 [pid 1287] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] <... futex resumed>) = 0 [pid 1285] exit_group(0 [pid 1286] <... futex resumed>) = ? [pid 1285] <... exit_group resumed>) = ? [pid 1286] +++ exited with 0 +++ [pid 1287] +++ exited with 0 +++ [pid 1285] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1285, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1288 ./strace-static-x86_64: Process 1288 attached [pid 1288] set_robust_list(0x5555564465e0, 24) = 0 [pid 1288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1288] setpgid(0, 0) = 0 [pid 1288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1288] write(3, "1000", 4) = 4 [pid 1288] close(3) = 0 [pid 1288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1288] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1288] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1289 attached , parent_tid=[1289], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1289 [pid 1289] set_robust_list(0x7fc84e09f9e0, 24 [pid 1288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] <... set_robust_list resumed>) = 0 [pid 1288] <... futex resumed>) = 0 [pid 1288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1289] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1288] <... futex resumed>) = 0 [pid 1289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1288] <... futex resumed>) = 0 [pid 1289] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1289] <... mount resumed>) = 0 [pid 1289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1288] <... futex resumed>) = 0 [pid 1289] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1289] <... mount resumed>) = 0 [pid 1289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1288] <... futex resumed>) = 0 [pid 1289] umount2("./file0", MNT_DETACH [pid 1288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1288] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1288] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1289] <... umount2 resumed>) = 0 [pid 1288] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1290 attached [pid 1288] <... clone resumed>, parent_tid=[1290], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1290 [pid 1289] <... futex resumed>) = 0 [pid 1288] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] <... futex resumed>) = 0 [pid 1290] set_robust_list(0x7fc84e07e9e0, 24 [pid 1288] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1290] <... set_robust_list resumed>) = 0 [pid 1290] umount2("./file0", MNT_DETACH) = 0 [pid 1290] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1288] <... futex resumed>) = 0 [pid 1290] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] exit_group(0) = ? [pid 1289] <... futex resumed>) = ? [pid 1290] <... futex resumed>) = ? [pid 1290] +++ exited with 0 +++ [pid 1289] +++ exited with 0 +++ [pid 1288] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1288, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1291 ./strace-static-x86_64: Process 1291 attached [pid 1291] set_robust_list(0x5555564465e0, 24) = 0 [pid 1291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1291] setpgid(0, 0) = 0 [pid 1291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1291] write(3, "1000", 4) = 4 [pid 1291] close(3) = 0 [pid 1291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1291] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1291] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1292 attached , parent_tid=[1292], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1292 [pid 1292] set_robust_list(0x7fc84e09f9e0, 24 [pid 1291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... set_robust_list resumed>) = 0 [pid 1291] <... futex resumed>) = 0 [pid 1291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... futex resumed>) = 0 [pid 1292] <... futex resumed>) = 1 [pid 1291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1291] <... futex resumed>) = 0 [pid 1291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... mount resumed>) = 0 [pid 1292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... futex resumed>) = 0 [pid 1292] <... futex resumed>) = 1 [pid 1291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1291] <... futex resumed>) = 0 [pid 1291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... mount resumed>) = 0 [pid 1292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1291] <... futex resumed>) = 0 [pid 1291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] umount2("./file0", MNT_DETACH [pid 1291] <... futex resumed>) = 0 [pid 1291] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1291] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1292] <... umount2 resumed>) = 0 [pid 1291] <... mprotect resumed>) = 0 [pid 1291] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1293 attached ) = 0 [pid 1293] set_robust_list(0x7fc84e07e9e0, 24 [pid 1292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1291] <... clone resumed>, parent_tid=[1293], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1293 [pid 1293] <... set_robust_list resumed>) = 0 [pid 1291] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] umount2("./file0", MNT_DETACH [pid 1291] <... futex resumed>) = 0 [pid 1291] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1293] <... umount2 resumed>) = 0 [pid 1293] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1291] <... futex resumed>) = 0 [pid 1293] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1291] exit_group(0) = ? [pid 1292] <... futex resumed>) = ? [pid 1293] <... futex resumed>) = ? [pid 1292] +++ exited with 0 +++ [pid 1293] +++ exited with 0 +++ [pid 1291] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1291, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1294 ./strace-static-x86_64: Process 1294 attached [pid 1294] set_robust_list(0x5555564465e0, 24) = 0 [pid 1294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1294] setpgid(0, 0) = 0 [pid 1294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1294] write(3, "1000", 4) = 4 [pid 1294] close(3) = 0 [pid 1294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1294] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1294] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1295 attached , parent_tid=[1295], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1295 [pid 1295] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1295] mkdir("./file0", 000 [pid 1294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1295] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1295] <... futex resumed>) = 0 [pid 1295] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1295] <... mount resumed>) = 0 [pid 1295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] <... futex resumed>) = 0 [pid 1294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1295] <... futex resumed>) = 0 [pid 1295] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1295] <... mount resumed>) = 0 [pid 1295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1295] <... futex resumed>) = 0 [pid 1295] umount2("./file0", MNT_DETACH [pid 1294] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1295] <... umount2 resumed>) = 0 [pid 1295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] <... mmap resumed>) = 0x7fc84e05e000 [pid 1294] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1294] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1296 attached , parent_tid=[1296], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1296 [pid 1296] set_robust_list(0x7fc84e07e9e0, 24 [pid 1294] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... set_robust_list resumed>) = 0 [pid 1294] <... futex resumed>) = 0 [pid 1296] umount2("./file0", MNT_DETACH [pid 1294] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] <... umount2 resumed>) = 0 [pid 1296] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1294] <... futex resumed>) = 0 [pid 1296] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] exit_group(0) = ? [pid 1295] <... futex resumed>) = ? [pid 1295] +++ exited with 0 +++ [pid 1296] <... futex resumed>) = ? [pid 1296] +++ exited with 0 +++ [pid 1294] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1294, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1297 ./strace-static-x86_64: Process 1297 attached [pid 1297] set_robust_list(0x5555564465e0, 24) = 0 [pid 1297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1297] setpgid(0, 0) = 0 [pid 1297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1297] write(3, "1000", 4) = 4 [pid 1297] close(3) = 0 [pid 1297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1297] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1297] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1298], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1298 [pid 1297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1298 attached [pid 1298] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1298] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1298] <... futex resumed>) = 1 [pid 1297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1298] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... mount resumed>) = 0 [pid 1298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1298] <... futex resumed>) = 1 [pid 1297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1298] umount2("./file0", MNT_DETACH [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1297] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1297] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1298] <... umount2 resumed>) = 0 [pid 1298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1299 attached ) = 0 [pid 1297] <... clone resumed>, parent_tid=[1299], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1299 [pid 1299] set_robust_list(0x7fc84e07e9e0, 24 [pid 1298] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1299] <... set_robust_list resumed>) = 0 [pid 1297] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] umount2("./file0", MNT_DETACH [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1299] <... umount2 resumed>) = 0 [pid 1299] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1297] <... futex resumed>) = 0 [pid 1297] exit_group(0 [pid 1299] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1297] <... exit_group resumed>) = ? [pid 1299] <... futex resumed>) = ? [pid 1298] <... futex resumed>) = ? [pid 1298] +++ exited with 0 +++ [pid 1299] +++ exited with 0 +++ [pid 1297] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1297, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1300 ./strace-static-x86_64: Process 1300 attached [pid 1300] set_robust_list(0x5555564465e0, 24) = 0 [pid 1300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1300] setpgid(0, 0) = 0 [pid 1300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1300] write(3, "1000", 4) = 4 [pid 1300] close(3) = 0 [pid 1300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1300] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1300] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1301 attached [pid 1301] set_robust_list(0x7fc84e09f9e0, 24 [pid 1300] <... clone resumed>, parent_tid=[1301], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1301 [pid 1301] <... set_robust_list resumed>) = 0 [pid 1300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1300] <... futex resumed>) = 0 [pid 1301] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1300] <... futex resumed>) = 0 [pid 1301] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] <... mount resumed>) = 0 [pid 1301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1300] <... futex resumed>) = 0 [pid 1301] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] <... mount resumed>) = 0 [pid 1301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1300] <... futex resumed>) = 0 [pid 1301] umount2("./file0", MNT_DETACH [pid 1300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1300] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1301] <... umount2 resumed>) = 0 [pid 1300] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1302 attached ) = 0 [pid 1302] set_robust_list(0x7fc84e07e9e0, 24 [pid 1300] <... clone resumed>, parent_tid=[1302], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1302 [pid 1301] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1300] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1302] <... set_robust_list resumed>) = 0 [pid 1300] <... futex resumed>) = 0 [pid 1302] umount2("./file0", MNT_DETACH [pid 1300] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1302] <... umount2 resumed>) = 0 [pid 1302] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1300] <... futex resumed>) = 0 [pid 1302] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1300] exit_group(0) = ? [pid 1301] <... futex resumed>) = ? [pid 1302] <... futex resumed>) = ? [pid 1302] +++ exited with 0 +++ [pid 1301] +++ exited with 0 +++ [pid 1300] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1300, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1303 ./strace-static-x86_64: Process 1303 attached [pid 1303] set_robust_list(0x5555564465e0, 24) = 0 [pid 1303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1303] setpgid(0, 0) = 0 [pid 1303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1303] write(3, "1000", 4) = 4 [pid 1303] close(3) = 0 [pid 1303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1303] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1303] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1304 attached , parent_tid=[1304], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1304 [pid 1304] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1304] <... futex resumed>) = 0 [pid 1304] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1304] <... futex resumed>) = 0 [pid 1304] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1304] <... futex resumed>) = 0 [pid 1304] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1304] <... mount resumed>) = 0 [pid 1304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1304] <... futex resumed>) = 0 [pid 1304] umount2("./file0", MNT_DETACH [pid 1303] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] <... umount2 resumed>) = 0 [pid 1304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] <... futex resumed>) = 0 [pid 1303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1303] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1303] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1305 attached [pid 1305] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1305] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] <... clone resumed>, parent_tid=[1305], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1305 [pid 1303] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1305] <... futex resumed>) = 0 [pid 1305] umount2("./file0", MNT_DETACH) = 0 [pid 1305] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1305] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1303] exit_group(0 [pid 1304] <... futex resumed>) = ? [pid 1303] <... exit_group resumed>) = ? [pid 1304] +++ exited with 0 +++ [pid 1305] <... futex resumed>) = ? [pid 1305] +++ exited with 0 +++ [pid 1303] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1303, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1306 ./strace-static-x86_64: Process 1306 attached [pid 1306] set_robust_list(0x5555564465e0, 24) = 0 [pid 1306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1306] setpgid(0, 0) = 0 [pid 1306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1306] write(3, "1000", 4) = 4 [pid 1306] close(3) = 0 [pid 1306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1306] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1306] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1307 attached [pid 1307] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] <... clone resumed>, parent_tid=[1307], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1307 [pid 1306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1307] <... futex resumed>) = 0 [pid 1307] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1307] <... futex resumed>) = 0 [pid 1307] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1307] <... futex resumed>) = 0 [pid 1307] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... mount resumed>) = 0 [pid 1307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1307] <... futex resumed>) = 0 [pid 1307] umount2("./file0", MNT_DETACH [pid 1306] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... umount2 resumed>) = 0 [pid 1307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] <... futex resumed>) = 0 [pid 1306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1306] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1306] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1308 attached [pid 1308] set_robust_list(0x7fc84e07e9e0, 24 [pid 1306] <... clone resumed>, parent_tid=[1308], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1308 [pid 1308] <... set_robust_list resumed>) = 0 [pid 1308] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1308] umount2("./file0", MNT_DETACH [pid 1306] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1308] <... umount2 resumed>) = 0 [pid 1308] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1306] <... futex resumed>) = 0 [pid 1308] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] exit_group(0 [pid 1308] <... futex resumed>) = ? [pid 1307] <... futex resumed>) = ? [pid 1306] <... exit_group resumed>) = ? [pid 1307] +++ exited with 0 +++ [pid 1308] +++ exited with 0 +++ [pid 1306] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1306, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1309 ./strace-static-x86_64: Process 1309 attached [pid 1309] set_robust_list(0x5555564465e0, 24) = 0 [pid 1309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1309] setpgid(0, 0) = 0 [pid 1309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1309] write(3, "1000", 4) = 4 [pid 1309] close(3) = 0 [pid 1309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1309] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1309] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1310 attached [pid 1310] set_robust_list(0x7fc84e09f9e0, 24 [pid 1309] <... clone resumed>, parent_tid=[1310], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1310 [pid 1310] <... set_robust_list resumed>) = 0 [pid 1309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1310] mkdir("./file0", 000 [pid 1309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1309] <... futex resumed>) = 0 [pid 1310] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] <... mount resumed>) = 0 [pid 1310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1309] <... futex resumed>) = 0 [pid 1310] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] <... mount resumed>) = 0 [pid 1310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1309] <... futex resumed>) = 0 [pid 1310] umount2("./file0", MNT_DETACH [pid 1309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1309] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1309] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1310] <... umount2 resumed>) = 0 [pid 1310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] <... mprotect resumed>) = 0 [pid 1309] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1310] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1311 attached [pid 1311] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1311] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1309] <... clone resumed>, parent_tid=[1311], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1311 [pid 1309] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1311] <... futex resumed>) = 0 [pid 1309] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1311] umount2("./file0", MNT_DETACH) = 0 [pid 1311] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1309] <... futex resumed>) = 0 [pid 1309] exit_group(0) = ? [pid 1311] +++ exited with 0 +++ [pid 1310] <... futex resumed>) = ? [pid 1310] +++ exited with 0 +++ [pid 1309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1309, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1312 ./strace-static-x86_64: Process 1312 attached [pid 1312] set_robust_list(0x5555564465e0, 24) = 0 [pid 1312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1312] setpgid(0, 0) = 0 [pid 1312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1312] write(3, "1000", 4) = 4 [pid 1312] close(3) = 0 [pid 1312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1312] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1312] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1313], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1313 [pid 1312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1313 attached [pid 1313] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1313] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1313] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1313] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1312] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1312] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1314], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1314 [pid 1312] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1312] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1314 attached [pid 1314] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1314] umount2("./file0", MNT_DETACH [pid 1313] umount2("./file0", MNT_DETACH [pid 1314] <... umount2 resumed>) = 0 [pid 1313] <... umount2 resumed>) = 0 [pid 1314] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1312] <... futex resumed>) = 0 [pid 1314] <... futex resumed>) = 1 [pid 1314] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1312] exit_group(0 [pid 1314] <... futex resumed>) = 231 [pid 1312] <... exit_group resumed>) = ? [pid 1313] <... futex resumed>) = ? [pid 1314] +++ exited with 0 +++ [pid 1313] +++ exited with 0 +++ [pid 1312] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1315 attached , child_tidptr=0x5555564465d0) = 1315 [pid 1315] set_robust_list(0x5555564465e0, 24) = 0 [pid 1315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1315] setpgid(0, 0) = 0 [pid 1315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1315] write(3, "1000", 4) = 4 [pid 1315] close(3) = 0 [pid 1315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1315] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1315] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1316 attached , parent_tid=[1316], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1316 [pid 1316] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1316] <... futex resumed>) = 0 [pid 1316] mkdir("./file0", 000 [pid 1315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1316] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1315] <... futex resumed>) = 0 [pid 1315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1316] <... futex resumed>) = 0 [pid 1316] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1316] <... futex resumed>) = 0 [pid 1315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1316] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1316] <... mount resumed>) = 0 [pid 1316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1316] <... futex resumed>) = 0 [pid 1315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1316] umount2("./file0", MNT_DETACH [pid 1315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1315] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] <... umount2 resumed>) = 0 [pid 1316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] <... futex resumed>) = 0 [pid 1316] <... futex resumed>) = 0 [pid 1315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1315] <... mmap resumed>) = 0x7fc84e05e000 [pid 1315] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1315] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1317], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1317 [pid 1315] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1315] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1317 attached [pid 1317] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1317] umount2("./file0", MNT_DETACH) = 0 [pid 1317] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1315] <... futex resumed>) = 0 [pid 1315] exit_group(0) = ? [pid 1316] <... futex resumed>) = ? [pid 1316] +++ exited with 0 +++ [pid 1317] +++ exited with 0 +++ [pid 1315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1318 ./strace-static-x86_64: Process 1318 attached [pid 1318] set_robust_list(0x5555564465e0, 24) = 0 [pid 1318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1318] setpgid(0, 0) = 0 [pid 1318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1318] write(3, "1000", 4) = 4 [pid 1318] close(3) = 0 [pid 1318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1318] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1318] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1319], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1319 [pid 1318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1319 attached [pid 1319] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1319] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1318] <... futex resumed>) = 0 [pid 1318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] <... futex resumed>) = 1 [pid 1319] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1318] <... futex resumed>) = 0 [pid 1319] <... futex resumed>) = 1 [pid 1318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1318] <... futex resumed>) = 0 [pid 1318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] <... mount resumed>) = 0 [pid 1319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 1319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1318] <... futex resumed>) = 0 [pid 1319] umount2("./file0", MNT_DETACH [pid 1318] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1318] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1318] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1319] <... umount2 resumed>) = 0 [pid 1319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1320 attached [pid 1318] <... clone resumed>, parent_tid=[1320], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1320 [pid 1320] set_robust_list(0x7fc84e07e9e0, 24 [pid 1319] <... futex resumed>) = 0 [pid 1320] <... set_robust_list resumed>) = 0 [pid 1318] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1320] umount2("./file0", MNT_DETACH [pid 1319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] <... futex resumed>) = 0 [pid 1318] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] <... umount2 resumed>) = 0 [pid 1320] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 1320] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] exit_group(0 [pid 1319] <... futex resumed>) = ? [pid 1320] <... futex resumed>) = ? [pid 1318] <... exit_group resumed>) = ? [pid 1319] +++ exited with 0 +++ [pid 1320] +++ exited with 0 +++ [pid 1318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1321 attached , child_tidptr=0x5555564465d0) = 1321 [pid 1321] set_robust_list(0x5555564465e0, 24) = 0 [pid 1321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1321] setpgid(0, 0) = 0 [pid 1321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1321] write(3, "1000", 4) = 4 [pid 1321] close(3) = 0 [pid 1321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1321] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1321] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1322 attached [pid 1322] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1321] <... clone resumed>, parent_tid=[1322], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1322 [pid 1321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1322] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1321] <... futex resumed>) = 0 [pid 1321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1322] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1322] <... futex resumed>) = 0 [pid 1322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1322] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1322] <... mount resumed>) = 0 [pid 1322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1321] <... futex resumed>) = 0 [pid 1321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1321] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1322] umount2("./file0", MNT_DETACH [pid 1321] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1321] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1322] <... umount2 resumed>) = 0 [pid 1321] <... clone resumed>, parent_tid=[1323], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1323 [pid 1321] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1321] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1323 attached [pid 1323] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1323] umount2("./file0", MNT_DETACH) = 0 [pid 1323] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1321] <... futex resumed>) = 0 [pid 1323] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1321] exit_group(0) = ? [pid 1323] <... futex resumed>) = 230 [pid 1323] +++ exited with 0 +++ [pid 1322] <... futex resumed>) = ? [pid 1322] +++ exited with 0 +++ [pid 1321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1324 ./strace-static-x86_64: Process 1324 attached [pid 1324] set_robust_list(0x5555564465e0, 24) = 0 [pid 1324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1324] setpgid(0, 0) = 0 [pid 1324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1324] write(3, "1000", 4) = 4 [pid 1324] close(3) = 0 [pid 1324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1324] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1324] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1325], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1325 [pid 1324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1325 attached [pid 1325] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1325] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] <... futex resumed>) = 0 [pid 1324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1325] <... futex resumed>) = 1 [pid 1325] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] <... futex resumed>) = 0 [pid 1325] <... futex resumed>) = 1 [pid 1324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1324] <... futex resumed>) = 0 [pid 1324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1325] <... mount resumed>) = 0 [pid 1325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] <... futex resumed>) = 0 [pid 1325] <... futex resumed>) = 1 [pid 1324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] umount2("./file0", MNT_DETACH [pid 1324] <... futex resumed>) = 0 [pid 1324] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1324] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1325] <... umount2 resumed>) = 0 [pid 1324] <... mprotect resumed>) = 0 [pid 1325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1325] <... futex resumed>) = 0 [pid 1325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1326 attached [pid 1326] set_robust_list(0x7fc84e07e9e0, 24 [pid 1324] <... clone resumed>, parent_tid=[1326], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1326 [pid 1326] <... set_robust_list resumed>) = 0 [pid 1324] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] umount2("./file0", MNT_DETACH [pid 1324] <... futex resumed>) = 0 [pid 1324] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] <... umount2 resumed>) = 0 [pid 1326] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1326] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] exit_group(0) = ? [pid 1325] <... futex resumed>) = ? [pid 1325] +++ exited with 0 +++ [pid 1326] <... futex resumed>) = ? [pid 1326] +++ exited with 0 +++ [pid 1324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1327 ./strace-static-x86_64: Process 1327 attached [pid 1327] set_robust_list(0x5555564465e0, 24) = 0 [pid 1327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1327] setpgid(0, 0) = 0 [pid 1327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1327] write(3, "1000", 4) = 4 [pid 1327] close(3) = 0 [pid 1327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1327] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1327] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1328], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1328 ./strace-static-x86_64: Process 1328 attached [pid 1327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1328] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1328] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] <... futex resumed>) = 0 [pid 1327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1328] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1328] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1328] <... mount resumed>) = 0 [pid 1328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] <... futex resumed>) = 0 [pid 1327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1328] umount2("./file0", MNT_DETACH [pid 1327] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1328] <... umount2 resumed>) = 0 [pid 1328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] <... mmap resumed>) = 0x7fc84e05e000 [pid 1327] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1327] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1329 attached [pid 1329] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1329] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] <... clone resumed>, parent_tid=[1329], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1329 [pid 1327] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1329] <... futex resumed>) = 0 [pid 1329] umount2("./file0", MNT_DETACH [pid 1327] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1329] <... umount2 resumed>) = 0 [pid 1329] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1329] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1327] exit_group(0 [pid 1328] <... futex resumed>) = ? [pid 1327] <... exit_group resumed>) = ? [pid 1328] +++ exited with 0 +++ [pid 1329] <... futex resumed>) = ? [pid 1329] +++ exited with 0 +++ [pid 1327] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1327, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1330 attached , child_tidptr=0x5555564465d0) = 1330 [pid 1330] set_robust_list(0x5555564465e0, 24) = 0 [pid 1330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1330] setpgid(0, 0) = 0 [pid 1330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1330] write(3, "1000", 4) = 4 [pid 1330] close(3) = 0 [pid 1330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1330] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1330] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1331 attached [pid 1331] set_robust_list(0x7fc84e09f9e0, 24 [pid 1330] <... clone resumed>, parent_tid=[1331], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1331 [pid 1330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1331] <... set_robust_list resumed>) = 0 [pid 1331] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] <... futex resumed>) = 0 [pid 1330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1331] <... futex resumed>) = 1 [pid 1331] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1330] <... futex resumed>) = 0 [pid 1330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1331] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1330] <... futex resumed>) = 0 [pid 1330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1330] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1330] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1331] umount2("./file0", MNT_DETACH [pid 1330] <... clone resumed>, parent_tid=[1332], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1332 [pid 1330] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1330] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1332 attached [pid 1332] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1331] <... umount2 resumed>) = 0 [pid 1332] umount2("./file0", MNT_DETACH [pid 1331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] <... umount2 resumed>) = 0 [pid 1332] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] <... futex resumed>) = 0 [pid 1331] <... futex resumed>) = 0 [pid 1330] exit_group(0) = ? [pid 1332] <... futex resumed>) = ? [pid 1331] +++ exited with 0 +++ [pid 1332] +++ exited with 0 +++ [pid 1330] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1330, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1333 attached , child_tidptr=0x5555564465d0) = 1333 [pid 1333] set_robust_list(0x5555564465e0, 24) = 0 [pid 1333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1333] setpgid(0, 0) = 0 [pid 1333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1333] write(3, "1000", 4) = 4 [pid 1333] close(3) = 0 [pid 1333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1333] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1333] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1334 attached , parent_tid=[1334], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1334 [pid 1333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1334] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1334] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1333] <... futex resumed>) = 0 [pid 1333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1334] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1333] <... futex resumed>) = 0 [pid 1333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1334] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1333] <... futex resumed>) = 0 [pid 1333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1333] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1333] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1335], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1335 [pid 1333] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1334] umount2("./file0", MNT_DETACH [pid 1333] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1335 attached [pid 1335] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1335] umount2("./file0", MNT_DETACH) = 0 [pid 1335] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] <... futex resumed>) = 0 [pid 1335] <... futex resumed>) = 1 [pid 1335] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] <... umount2 resumed>) = 0 [pid 1334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1333] exit_group(0) = ? [pid 1334] <... futex resumed>) = ? [pid 1334] +++ exited with 0 +++ [pid 1335] <... futex resumed>) = ? [pid 1335] +++ exited with 0 +++ [pid 1333] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1336 ./strace-static-x86_64: Process 1336 attached [pid 1336] set_robust_list(0x5555564465e0, 24) = 0 [pid 1336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1336] setpgid(0, 0) = 0 [pid 1336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1336] write(3, "1000", 4) = 4 [pid 1336] close(3) = 0 [pid 1336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1336] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1336] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1337], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1337 [pid 1336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1337 attached [pid 1337] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1337] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1336] <... futex resumed>) = 0 [pid 1337] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1336] <... futex resumed>) = 0 [pid 1337] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1337] <... mount resumed>) = 0 [pid 1337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = 0 [pid 1337] <... futex resumed>) = 1 [pid 1337] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1337] <... mount resumed>) = 0 [pid 1337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1336] <... futex resumed>) = 0 [pid 1336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] umount2("./file0", MNT_DETACH [pid 1336] <... futex resumed>) = 0 [pid 1336] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1336] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1336] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1338], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1338 [pid 1336] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1336] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1338 attached [pid 1338] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1338] umount2("./file0", MNT_DETACH) = 0 [pid 1337] <... umount2 resumed>) = 0 [pid 1338] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 1 [pid 1338] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1337] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1336] exit_group(0) = ? [pid 1338] <... futex resumed>) = 231 [pid 1337] <... futex resumed>) = ? [pid 1337] +++ exited with 0 +++ [pid 1338] +++ exited with 0 +++ [pid 1336] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1336, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1339 ./strace-static-x86_64: Process 1339 attached [pid 1339] set_robust_list(0x5555564465e0, 24) = 0 [pid 1339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1339] setpgid(0, 0) = 0 [pid 1339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1339] write(3, "1000", 4) = 4 [pid 1339] close(3) = 0 [pid 1339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1339] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1339] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1340], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1340 [pid 1339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1340 attached [pid 1340] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1340] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1339] <... futex resumed>) = 0 [pid 1339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1340] <... futex resumed>) = 1 [pid 1340] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1339] <... futex resumed>) = 0 [pid 1340] <... futex resumed>) = 1 [pid 1339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1339] <... futex resumed>) = 0 [pid 1339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1340] <... mount resumed>) = 0 [pid 1340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1339] <... futex resumed>) = 0 [pid 1340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1340] umount2("./file0", MNT_DETACH [pid 1339] <... futex resumed>) = 0 [pid 1339] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1339] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1340] <... umount2 resumed>) = 0 [pid 1339] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1341 attached [pid 1340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1341] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1339] <... clone resumed>, parent_tid=[1341], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1341 [pid 1341] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1339] <... futex resumed>) = 0 [pid 1341] umount2("./file0", MNT_DETACH [pid 1339] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1341] <... umount2 resumed>) = 0 [pid 1341] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1339] <... futex resumed>) = 0 [pid 1341] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] exit_group(0) = ? [pid 1341] <... futex resumed>) = ? [pid 1340] <... futex resumed>) = ? [pid 1340] +++ exited with 0 +++ [pid 1341] +++ exited with 0 +++ [pid 1339] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1339, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1342 attached , child_tidptr=0x5555564465d0) = 1342 [pid 1342] set_robust_list(0x5555564465e0, 24) = 0 [pid 1342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1342] setpgid(0, 0) = 0 [pid 1342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1342] write(3, "1000", 4) = 4 [pid 1342] close(3) = 0 [pid 1342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1342] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1342] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1343 attached , parent_tid=[1343], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1343 [pid 1343] set_robust_list(0x7fc84e09f9e0, 24 [pid 1342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] <... set_robust_list resumed>) = 0 [pid 1342] <... futex resumed>) = 0 [pid 1343] mkdir("./file0", 000 [pid 1342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1343] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1342] <... futex resumed>) = 0 [pid 1342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1343] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1342] <... futex resumed>) = 0 [pid 1343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1342] <... futex resumed>) = 0 [pid 1342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1343] <... mount resumed>) = 0 [pid 1343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1342] <... futex resumed>) = 0 [pid 1342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1343] <... futex resumed>) = 0 [pid 1343] umount2("./file0", MNT_DETACH [pid 1342] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] <... umount2 resumed>) = 0 [pid 1343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1342] <... futex resumed>) = 0 [pid 1342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1342] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1342] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1344 attached [pid 1344] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1344] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1342] <... clone resumed>, parent_tid=[1344], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1344 [pid 1342] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] <... futex resumed>) = 0 [pid 1342] <... futex resumed>) = 1 [pid 1344] umount2("./file0", MNT_DETACH [pid 1342] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1344] <... umount2 resumed>) = 0 [pid 1344] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1342] <... futex resumed>) = 0 [pid 1344] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1342] exit_group(0 [pid 1344] <... futex resumed>) = ? [pid 1342] <... exit_group resumed>) = ? [pid 1343] <... futex resumed>) = ? [pid 1343] +++ exited with 0 +++ [pid 1344] +++ exited with 0 +++ [pid 1342] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1342, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1345 ./strace-static-x86_64: Process 1345 attached [pid 1345] set_robust_list(0x5555564465e0, 24) = 0 [pid 1345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1345] setpgid(0, 0) = 0 [pid 1345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1345] write(3, "1000", 4) = 4 [pid 1345] close(3) = 0 [pid 1345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1345] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1345] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1346 attached , parent_tid=[1346], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1346 [pid 1345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1346] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1346] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1346] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1346] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1346] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1346] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1345] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1346] umount2("./file0", MNT_DETACH [pid 1345] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1347], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1347 [pid 1345] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1345] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1347 attached [pid 1347] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1347] umount2("./file0", MNT_DETACH) = 0 [pid 1347] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] <... futex resumed>) = 0 [pid 1347] <... futex resumed>) = 1 [pid 1347] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1346] <... umount2 resumed>) = 0 [pid 1346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] exit_group(0) = ? [pid 1347] <... futex resumed>) = ? [pid 1347] +++ exited with 0 +++ [pid 1346] <... futex resumed>) = ? [pid 1346] +++ exited with 0 +++ [pid 1345] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1345, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1348 ./strace-static-x86_64: Process 1348 attached [pid 1348] set_robust_list(0x5555564465e0, 24) = 0 [pid 1348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1348] setpgid(0, 0) = 0 [pid 1348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1348] write(3, "1000", 4) = 4 [pid 1348] close(3) = 0 [pid 1348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1348] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1348] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1349 attached , parent_tid=[1349], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1349 [pid 1348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1349] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1348] <... futex resumed>) = 0 [pid 1348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1349] <... futex resumed>) = 0 [pid 1349] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] <... mount resumed>) = 0 [pid 1349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1348] <... futex resumed>) = 0 [pid 1349] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] <... mount resumed>) = 0 [pid 1348] <... futex resumed>) = 0 [pid 1349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] <... futex resumed>) = 0 [pid 1348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] umount2("./file0", MNT_DETACH [pid 1348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1349] <... umount2 resumed>) = 0 [pid 1348] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1348] <... futex resumed>) = 0 [pid 1349] <... futex resumed>) = 0 [pid 1348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1348] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1348] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1350 attached , parent_tid=[1350], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1350 [pid 1350] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1350] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1348] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1350] <... futex resumed>) = 0 [pid 1350] umount2("./file0", MNT_DETACH [pid 1348] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1350] <... umount2 resumed>) = 0 [pid 1350] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1350] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1348] exit_group(0 [pid 1349] <... futex resumed>) = ? [pid 1348] <... exit_group resumed>) = ? [pid 1350] <... futex resumed>) = ? [pid 1350] +++ exited with 0 +++ [pid 1349] +++ exited with 0 +++ [pid 1348] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1351 attached , child_tidptr=0x5555564465d0) = 1351 [pid 1351] set_robust_list(0x5555564465e0, 24) = 0 [pid 1351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1351] setpgid(0, 0) = 0 [pid 1351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1351] write(3, "1000", 4) = 4 [pid 1351] close(3) = 0 [pid 1351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1351] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1351] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1352 attached [pid 1352] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1351] <... clone resumed>, parent_tid=[1352], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1352 [pid 1351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] <... futex resumed>) = 0 [pid 1351] <... futex resumed>) = 1 [pid 1351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1352] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1351] <... futex resumed>) = 0 [pid 1351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1352] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1351] <... futex resumed>) = 0 [pid 1351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1351] <... futex resumed>) = 0 [pid 1351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1352] <... mount resumed>) = 0 [pid 1352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1351] <... futex resumed>) = 0 [pid 1351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1351] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1351] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1351] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1353], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1353 [pid 1351] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1351] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1353 attached [pid 1353] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1353] umount2("./file0", MNT_DETACH) = 0 [pid 1353] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] <... futex resumed>) = 0 [pid 1353] <... futex resumed>) = 1 [pid 1352] umount2("./file0", MNT_DETACH [pid 1353] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1352] <... umount2 resumed>) = 0 [pid 1352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1351] exit_group(0) = ? [pid 1353] <... futex resumed>) = ? [pid 1353] +++ exited with 0 +++ [pid 1352] <... futex resumed>) = ? [pid 1352] +++ exited with 0 +++ [pid 1351] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1354 attached , child_tidptr=0x5555564465d0) = 1354 [pid 1354] set_robust_list(0x5555564465e0, 24) = 0 [pid 1354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1354] setpgid(0, 0) = 0 [pid 1354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1354] write(3, "1000", 4) = 4 [pid 1354] close(3) = 0 [pid 1354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1354] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1354] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1355], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1355 [pid 1354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1355 attached [pid 1355] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1355] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1354] <... futex resumed>) = 0 [pid 1354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1354] <... futex resumed>) = 0 [pid 1354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1354] <... futex resumed>) = 0 [pid 1354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1354] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1354] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1355] umount2("./file0", MNT_DETACH [pid 1354] <... clone resumed>, parent_tid=[1356], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1356 [pid 1354] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1354] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1356 attached [pid 1356] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1356] umount2("./file0", MNT_DETACH) = 0 [pid 1356] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = 0 [pid 1356] <... futex resumed>) = 1 [pid 1356] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1355] <... umount2 resumed>) = 0 [pid 1355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1355] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1354] exit_group(0) = ? [pid 1356] <... futex resumed>) = ? [pid 1356] +++ exited with 0 +++ [pid 1355] <... futex resumed>) = ? [pid 1355] +++ exited with 0 +++ [pid 1354] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1354, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1357 attached , child_tidptr=0x5555564465d0) = 1357 [pid 1357] set_robust_list(0x5555564465e0, 24) = 0 [pid 1357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1357] setpgid(0, 0) = 0 [pid 1357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1357] write(3, "1000", 4) = 4 [pid 1357] close(3) = 0 [pid 1357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1357] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1357] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1358 attached , parent_tid=[1358], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1358 [pid 1357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1358] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1357] <... futex resumed>) = 0 [pid 1357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1357] <... futex resumed>) = 0 [pid 1357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1357] <... futex resumed>) = 0 [pid 1357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1357] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1357] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1357] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1359], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1359 [pid 1357] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1358] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1359 attached [pid 1357] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1359] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1359] umount2("./file0", MNT_DETACH [pid 1358] <... umount2 resumed>) = 0 [pid 1359] <... umount2 resumed>) = 0 [pid 1358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1359] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] <... futex resumed>) = 0 [pid 1357] exit_group(0) = ? [pid 1358] <... futex resumed>) = ? [pid 1358] +++ exited with 0 +++ [pid 1359] <... futex resumed>) = ? [pid 1359] +++ exited with 0 +++ [pid 1357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1357, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1360 ./strace-static-x86_64: Process 1360 attached [pid 1360] set_robust_list(0x5555564465e0, 24) = 0 [pid 1360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1360] setpgid(0, 0) = 0 [pid 1360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1360] write(3, "1000", 4) = 4 [pid 1360] close(3) = 0 [pid 1360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1360] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1360] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1361], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1361 [pid 1360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1361 attached ) = 0 [pid 1361] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1361] mkdir("./file0", 000 [pid 1360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1361] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1361] <... futex resumed>) = 0 [pid 1361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1361] <... futex resumed>) = 0 [pid 1360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1361] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1361] <... futex resumed>) = 0 [pid 1361] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1361] <... mount resumed>) = 0 [pid 1361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1360] <... futex resumed>) = 0 [pid 1361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1361] <... futex resumed>) = 0 [pid 1361] umount2("./file0", MNT_DETACH [pid 1360] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1360] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1360] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1361] <... umount2 resumed>) = 0 [pid 1361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1362 attached [pid 1360] <... clone resumed>, parent_tid=[1362], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1362 [pid 1362] set_robust_list(0x7fc84e07e9e0, 24 [pid 1360] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1362] <... set_robust_list resumed>) = 0 [pid 1360] <... futex resumed>) = 0 [pid 1360] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1362] umount2("./file0", MNT_DETACH) = 0 [pid 1362] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1360] <... futex resumed>) = 0 [pid 1362] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1360] exit_group(0 [pid 1361] <... futex resumed>) = ? [pid 1360] <... exit_group resumed>) = ? [pid 1361] +++ exited with 0 +++ [pid 1362] <... futex resumed>) = ? [pid 1362] +++ exited with 0 +++ [pid 1360] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1360, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1363 attached , child_tidptr=0x5555564465d0) = 1363 [pid 1363] set_robust_list(0x5555564465e0, 24) = 0 [pid 1363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1363] setpgid(0, 0) = 0 [pid 1363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1363] write(3, "1000", 4) = 4 [pid 1363] close(3) = 0 [pid 1363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1363] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1363] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1364], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1364 [pid 1363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1364 attached [pid 1363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1364] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1364] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1363] <... futex resumed>) = 0 [pid 1364] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1364] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1363] <... futex resumed>) = 0 [pid 1364] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1364] <... mount resumed>) = 0 [pid 1364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1363] <... futex resumed>) = 0 [pid 1363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1364] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1363] <... futex resumed>) = 0 [pid 1363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1363] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1363] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1363] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1365], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1365 [pid 1363] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1363] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1365 attached [pid 1365] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1365] umount2("./file0", MNT_DETACH [pid 1364] umount2("./file0", MNT_DETACH [pid 1365] <... umount2 resumed>) = 0 [pid 1365] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1363] <... futex resumed>) = 0 [pid 1365] <... futex resumed>) = 1 [pid 1365] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1364] <... umount2 resumed>) = 0 [pid 1364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1364] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1363] exit_group(0) = ? [pid 1364] <... futex resumed>) = ? [pid 1364] +++ exited with 0 +++ [pid 1365] <... futex resumed>) = ? [pid 1365] +++ exited with 0 +++ [pid 1363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1363, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1366 ./strace-static-x86_64: Process 1366 attached [pid 1366] set_robust_list(0x5555564465e0, 24) = 0 [pid 1366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1366] setpgid(0, 0) = 0 [pid 1366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1366] write(3, "1000", 4) = 4 [pid 1366] close(3) = 0 [pid 1366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1366] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1366] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1367 attached , parent_tid=[1367], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1367 [pid 1366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1367] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1367] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1366] <... futex resumed>) = 0 [pid 1366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1367] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1366] <... futex resumed>) = 0 [pid 1366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1367] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1366] <... futex resumed>) = 0 [pid 1366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1367] umount2("./file0", MNT_DETACH [pid 1366] <... futex resumed>) = 0 [pid 1366] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1366] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1366] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1368], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1368 [pid 1366] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1366] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1368 attached [pid 1368] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1368] umount2("./file0", MNT_DETACH [pid 1367] <... umount2 resumed>) = 0 [pid 1367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1368] <... umount2 resumed>) = 0 [pid 1367] <... futex resumed>) = 0 [pid 1368] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1366] <... futex resumed>) = 0 [pid 1366] exit_group(0) = ? [pid 1368] <... futex resumed>) = ? [pid 1367] +++ exited with 0 +++ [pid 1368] +++ exited with 0 +++ [pid 1366] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1369 ./strace-static-x86_64: Process 1369 attached [pid 1369] set_robust_list(0x5555564465e0, 24) = 0 [pid 1369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1369] setpgid(0, 0) = 0 [pid 1369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1369] write(3, "1000", 4) = 4 [pid 1369] close(3) = 0 [pid 1369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1369] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1369] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1370], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1370 ./strace-static-x86_64: Process 1370 attached [pid 1370] set_robust_list(0x7fc84e09f9e0, 24 [pid 1369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1370] <... set_robust_list resumed>) = 0 [pid 1370] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1369] <... futex resumed>) = 0 [pid 1370] <... futex resumed>) = 0 [pid 1369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1370] <... futex resumed>) = 0 [pid 1370] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1370] <... mount resumed>) = 0 [pid 1370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1369] <... futex resumed>) = 0 [pid 1369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1370] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1369] <... futex resumed>) = 0 [pid 1369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1369] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1369] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1369] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1371], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1371 [pid 1369] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1369] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1370] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1371 attached [pid 1371] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1371] umount2("./file0", MNT_DETACH) = 0 [pid 1371] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1369] <... futex resumed>) = 0 [pid 1370] <... umount2 resumed>) = 0 [pid 1371] <... futex resumed>) = 1 [pid 1371] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1369] exit_group(0 [pid 1371] <... futex resumed>) = 231 [pid 1369] <... exit_group resumed>) = ? [pid 1370] <... futex resumed>) = ? [pid 1370] +++ exited with 0 +++ [pid 1371] +++ exited with 0 +++ [pid 1369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1372 attached , child_tidptr=0x5555564465d0) = 1372 [pid 1372] set_robust_list(0x5555564465e0, 24) = 0 [pid 1372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1372] setpgid(0, 0) = 0 [pid 1372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1372] write(3, "1000", 4) = 4 [pid 1372] close(3) = 0 [pid 1372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1372] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1372] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1373], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1373 [pid 1372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1373 attached [pid 1373] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1373] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1372] <... futex resumed>) = 0 [pid 1372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1373] <... futex resumed>) = 1 [pid 1373] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1372] <... futex resumed>) = 0 [pid 1373] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1373] <... mount resumed>) = 0 [pid 1373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1372] <... futex resumed>) = 0 [pid 1372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1372] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1372] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1374], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1374 [pid 1373] umount2("./file0", MNT_DETACH [pid 1372] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1372] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1374 attached [pid 1374] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1374] umount2("./file0", MNT_DETACH) = 0 [pid 1374] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1372] <... futex resumed>) = 0 [pid 1374] <... futex resumed>) = 1 [pid 1374] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1373] <... umount2 resumed>) = 0 [pid 1373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1373] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1372] exit_group(0) = ? [pid 1373] <... futex resumed>) = ? [pid 1373] +++ exited with 0 +++ [pid 1374] <... futex resumed>) = ? [pid 1374] +++ exited with 0 +++ [pid 1372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1372, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1375 ./strace-static-x86_64: Process 1375 attached [pid 1375] set_robust_list(0x5555564465e0, 24) = 0 [pid 1375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1375] setpgid(0, 0) = 0 [pid 1375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1375] write(3, "1000", 4) = 4 [pid 1375] close(3) = 0 [pid 1375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1375] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1375] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1376], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1376 [pid 1375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1376 attached [pid 1376] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1376] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1375] <... futex resumed>) = 0 [pid 1375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1376] <... futex resumed>) = 1 [pid 1376] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1375] <... futex resumed>) = 0 [pid 1375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1376] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1375] <... futex resumed>) = 0 [pid 1375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1375] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1375] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1376] umount2("./file0", MNT_DETACH [pid 1375] <... clone resumed>, parent_tid=[1377], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1377 [pid 1375] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1375] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1377 attached [pid 1377] set_robust_list(0x7fc84e07e9e0, 24 [pid 1376] <... umount2 resumed>) = 0 [pid 1376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1377] <... set_robust_list resumed>) = 0 [pid 1377] umount2("./file0", MNT_DETACH) = 0 [pid 1377] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1375] <... futex resumed>) = 0 [pid 1377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1375] exit_group(0) = ? [pid 1376] <... futex resumed>) = ? [pid 1376] +++ exited with 0 +++ [pid 1377] <... futex resumed>) = ? [pid 1377] +++ exited with 0 +++ [pid 1375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1378 attached , child_tidptr=0x5555564465d0) = 1378 [pid 1378] set_robust_list(0x5555564465e0, 24) = 0 [pid 1378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1378] setpgid(0, 0) = 0 [pid 1378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1378] write(3, "1000", 4) = 4 [pid 1378] close(3) = 0 [pid 1378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1378] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1378] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1379], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1379 [pid 1378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1379 attached [pid 1379] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1379] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1378] <... futex resumed>) = 0 [pid 1379] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1379] <... mount resumed>) = 0 [pid 1379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1378] <... futex resumed>) = 0 [pid 1378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1379] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1378] <... futex resumed>) = 0 [pid 1378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1378] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1378] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1380 attached [pid 1380] set_robust_list(0x7fc84e07e9e0, 24 [pid 1378] <... clone resumed>, parent_tid=[1380], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1380 [pid 1380] <... set_robust_list resumed>) = 0 [pid 1378] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1378] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1380] umount2("./file0", MNT_DETACH [pid 1379] umount2("./file0", MNT_DETACH [pid 1380] <... umount2 resumed>) = 0 [pid 1379] <... umount2 resumed>) = 0 [pid 1380] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1378] <... futex resumed>) = 0 [pid 1380] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1378] exit_group(0) = ? [pid 1379] <... futex resumed>) = ? [pid 1380] <... futex resumed>) = ? [pid 1379] +++ exited with 0 +++ [pid 1380] +++ exited with 0 +++ [pid 1378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1381 attached , child_tidptr=0x5555564465d0) = 1381 [pid 1381] set_robust_list(0x5555564465e0, 24) = 0 [pid 1381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1381] setpgid(0, 0) = 0 [pid 1381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1381] write(3, "1000", 4) = 4 [pid 1381] close(3) = 0 [pid 1381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1381] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1381] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1382], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1382 [pid 1381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1382 attached [pid 1382] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1382] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1381] <... futex resumed>) = 0 [pid 1381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1382] <... futex resumed>) = 1 [pid 1382] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1381] <... futex resumed>) = 0 [pid 1381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1382] <... futex resumed>) = 1 [pid 1381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1382] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1381] <... futex resumed>) = 0 [pid 1381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1381] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1381] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1381] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1382] umount2("./file0", MNT_DETACH [pid 1381] <... clone resumed>, parent_tid=[1383], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1383 [pid 1381] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1381] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1383 attached [pid 1383] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1383] umount2("./file0", MNT_DETACH) = 0 [pid 1383] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1381] <... futex resumed>) = 0 [pid 1383] <... futex resumed>) = 1 [pid 1383] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1382] <... umount2 resumed>) = 0 [pid 1382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1381] exit_group(0) = ? [pid 1382] <... futex resumed>) = ? [pid 1382] +++ exited with 0 +++ [pid 1383] <... futex resumed>) = ? [pid 1383] +++ exited with 0 +++ [pid 1381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1381, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1384 attached , child_tidptr=0x5555564465d0) = 1384 [pid 1384] set_robust_list(0x5555564465e0, 24) = 0 [pid 1384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1384] setpgid(0, 0) = 0 [pid 1384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1384] write(3, "1000", 4) = 4 [pid 1384] close(3) = 0 [pid 1384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1384] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1384] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1385 attached , parent_tid=[1385], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1385 [pid 1384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1385] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1385] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1384] <... futex resumed>) = 0 [pid 1384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1385] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1384] <... futex resumed>) = 0 [pid 1385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1385] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1384] <... futex resumed>) = 0 [pid 1384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1385] umount2("./file0", MNT_DETACH [pid 1384] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1384] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1386 attached , parent_tid=[1386], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1386 [pid 1384] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1384] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1386] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1386] umount2("./file0", MNT_DETACH) = 0 [pid 1386] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1385] <... umount2 resumed>) = 0 [pid 1384] <... futex resumed>) = 0 [pid 1386] <... futex resumed>) = 1 [pid 1385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1385] <... futex resumed>) = 0 [pid 1385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1384] exit_group(0) = ? [pid 1385] <... futex resumed>) = 231 [pid 1386] <... futex resumed>) = ? [pid 1386] +++ exited with 0 +++ [pid 1385] +++ exited with 0 +++ [pid 1384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1387 ./strace-static-x86_64: Process 1387 attached [pid 1387] set_robust_list(0x5555564465e0, 24) = 0 [pid 1387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1387] setpgid(0, 0) = 0 [pid 1387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1387] write(3, "1000", 4) = 4 [pid 1387] close(3) = 0 [pid 1387] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1387] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1387] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1388 attached [pid 1388] set_robust_list(0x7fc84e09f9e0, 24 [pid 1387] <... clone resumed>, parent_tid=[1388], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1388 [pid 1388] <... set_robust_list resumed>) = 0 [pid 1387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1388] mkdir("./file0", 000 [pid 1387] <... futex resumed>) = 0 [pid 1388] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1387] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1388] <... futex resumed>) = 0 [pid 1387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1388] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1387] <... futex resumed>) = 0 [pid 1388] <... mount resumed>) = 0 [pid 1387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1387] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1388] <... futex resumed>) = 0 [pid 1387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1388] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1387] <... futex resumed>) = 0 [pid 1387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1388] <... mount resumed>) = 0 [pid 1388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1387] <... futex resumed>) = 0 [pid 1387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1387] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1387] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1387] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1389 attached , parent_tid=[1389], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1389 [pid 1387] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1387] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1388] <... futex resumed>) = 1 [pid 1388] umount2("./file0", MNT_DETACH) = 0 [pid 1388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1389] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1389] umount2("./file0", MNT_DETACH) = 0 [pid 1389] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1387] <... futex resumed>) = 0 [pid 1389] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1387] exit_group(0) = ? [pid 1388] <... futex resumed>) = ? [pid 1389] <... futex resumed>) = ? [pid 1389] +++ exited with 0 +++ [pid 1388] +++ exited with 0 +++ [pid 1387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1390 ./strace-static-x86_64: Process 1390 attached [pid 1390] set_robust_list(0x5555564465e0, 24) = 0 [pid 1390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1390] setpgid(0, 0) = 0 [pid 1390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1390] write(3, "1000", 4) = 4 [pid 1390] close(3) = 0 [pid 1390] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1390] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1390] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1391], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1391 [pid 1390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1391 attached [pid 1391] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1391] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1390] <... futex resumed>) = 0 [pid 1390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1391] <... futex resumed>) = 1 [pid 1390] <... futex resumed>) = 0 [pid 1391] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1391] <... mount resumed>) = 0 [pid 1391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1390] <... futex resumed>) = 0 [pid 1391] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1391] <... mount resumed>) = 0 [pid 1391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1390] <... futex resumed>) = 0 [pid 1390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1390] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1390] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1390] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1391] umount2("./file0", MNT_DETACH [pid 1390] <... clone resumed>, parent_tid=[1392], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1392 [pid 1390] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1390] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1392 attached [pid 1391] <... umount2 resumed>) = 0 [pid 1391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1392] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1392] umount2("./file0", MNT_DETACH) = 0 [pid 1392] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1390] <... futex resumed>) = 0 [pid 1390] exit_group(0) = ? [pid 1392] <... futex resumed>) = ? [pid 1391] <... futex resumed>) = ? [pid 1392] +++ exited with 0 +++ [pid 1391] +++ exited with 0 +++ [pid 1390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1393 ./strace-static-x86_64: Process 1393 attached [pid 1393] set_robust_list(0x5555564465e0, 24) = 0 [pid 1393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1393] setpgid(0, 0) = 0 [pid 1393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1393] write(3, "1000", 4) = 4 [pid 1393] close(3) = 0 [pid 1393] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1393] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1393] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1394 attached , parent_tid=[1394], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1394 [pid 1394] set_robust_list(0x7fc84e09f9e0, 24 [pid 1393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1394] <... set_robust_list resumed>) = 0 [pid 1393] <... futex resumed>) = 0 [pid 1394] mkdir("./file0", 000 [pid 1393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1394] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1393] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1394] <... futex resumed>) = 0 [pid 1394] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1393] <... futex resumed>) = 0 [pid 1393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1394] <... futex resumed>) = 0 [pid 1394] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1394] <... mount resumed>) = 0 [pid 1394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1393] <... futex resumed>) = 0 [pid 1393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1393] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1393] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1393] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 1395 attached [pid 1393] <... clone resumed>, parent_tid=[1395], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1395 [pid 1394] umount2("./file0", MNT_DETACH [pid 1393] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1393] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1395] set_robust_list(0x7fc84e07e9e0, 24 [pid 1394] <... umount2 resumed>) = 0 [pid 1395] <... set_robust_list resumed>) = 0 [pid 1394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1395] umount2("./file0", MNT_DETACH [pid 1394] <... futex resumed>) = 0 [pid 1394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1395] <... umount2 resumed>) = 0 [pid 1395] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1393] <... futex resumed>) = 0 [pid 1393] exit_group(0) = ? [pid 1394] <... futex resumed>) = ? [pid 1394] +++ exited with 0 +++ [pid 1395] +++ exited with 0 +++ [pid 1393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1396 attached , child_tidptr=0x5555564465d0) = 1396 [pid 1396] set_robust_list(0x5555564465e0, 24) = 0 [pid 1396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1396] setpgid(0, 0) = 0 [pid 1396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1396] write(3, "1000", 4) = 4 [pid 1396] close(3) = 0 [pid 1396] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1396] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1396] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1397], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1397 [pid 1396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1397 attached [pid 1397] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1397] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1396] <... futex resumed>) = 0 [pid 1396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1397] <... futex resumed>) = 1 [pid 1397] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1396] <... futex resumed>) = 0 [pid 1397] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1397] <... mount resumed>) = 0 [pid 1397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1396] <... futex resumed>) = 0 [pid 1396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1396] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1396] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1396] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1398], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1398 [pid 1396] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1397] umount2("./file0", MNT_DETACH [pid 1396] <... futex resumed>) = 0 [pid 1396] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1398 attached [pid 1398] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1398] umount2("./file0", MNT_DETACH) = 0 [pid 1398] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1396] <... futex resumed>) = 0 [pid 1398] <... futex resumed>) = 1 [pid 1398] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1397] <... umount2 resumed>) = 0 [pid 1397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1396] exit_group(0) = ? [pid 1397] <... futex resumed>) = ? [pid 1397] +++ exited with 0 +++ [pid 1398] <... futex resumed>) = ? [pid 1398] +++ exited with 0 +++ [pid 1396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1396, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1399 ./strace-static-x86_64: Process 1399 attached [pid 1399] set_robust_list(0x5555564465e0, 24) = 0 [pid 1399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1399] setpgid(0, 0) = 0 [pid 1399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1399] write(3, "1000", 4) = 4 [pid 1399] close(3) = 0 [pid 1399] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1399] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1399] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1400], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1400 [pid 1399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1400 attached [pid 1400] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1400] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1399] <... futex resumed>) = 0 [pid 1399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1400] <... futex resumed>) = 1 [pid 1399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1400] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1399] <... futex resumed>) = 0 [pid 1400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1400] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1399] <... futex resumed>) = 0 [pid 1399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1399] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1400] umount2("./file0", MNT_DETACH [pid 1399] <... mmap resumed>) = 0x7fc84e05e000 [pid 1399] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1399] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1401], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1401 [pid 1399] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1400] <... umount2 resumed>) = 0 [pid 1399] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1401 attached [pid 1401] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1401] umount2("./file0", MNT_DETACH [pid 1400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1401] <... umount2 resumed>) = 0 [pid 1401] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1399] <... futex resumed>) = 0 [pid 1399] exit_group(0) = ? [pid 1400] <... futex resumed>) = 231 [pid 1401] <... futex resumed>) = ? [pid 1400] +++ exited with 0 +++ [pid 1401] +++ exited with 0 +++ [pid 1399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1402 attached , child_tidptr=0x5555564465d0) = 1402 [pid 1402] set_robust_list(0x5555564465e0, 24) = 0 [pid 1402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1402] setpgid(0, 0) = 0 [pid 1402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1402] write(3, "1000", 4) = 4 [pid 1402] close(3) = 0 [pid 1402] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1402] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1402] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1403 attached , parent_tid=[1403], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1403 [pid 1402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1403] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1403] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1402] <... futex resumed>) = 0 [pid 1402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1403] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1402] <... futex resumed>) = 0 [pid 1402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1403] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1402] <... futex resumed>) = 0 [pid 1402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1402] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1402] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1402] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1403] umount2("./file0", MNT_DETACH [pid 1402] <... clone resumed>, parent_tid=[1404], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1404 [pid 1402] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1403] <... umount2 resumed>) = 0 [pid 1402] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1404 attached [pid 1404] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1404] umount2("./file0", MNT_DETACH) = 0 [pid 1404] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1402] <... futex resumed>) = 0 [pid 1404] <... futex resumed>) = 1 [pid 1403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1403] <... futex resumed>) = 0 [pid 1403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1402] exit_group(0) = ? [pid 1404] <... futex resumed>) = ? [pid 1404] +++ exited with 0 +++ [pid 1403] <... futex resumed>) = ? [pid 1403] +++ exited with 0 +++ [pid 1402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1405 attached , child_tidptr=0x5555564465d0) = 1405 [pid 1405] set_robust_list(0x5555564465e0, 24) = 0 [pid 1405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1405] setpgid(0, 0) = 0 [pid 1405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1405] write(3, "1000", 4) = 4 [pid 1405] close(3) = 0 [pid 1405] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1405] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1405] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1406 attached , parent_tid=[1406], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1406 [pid 1406] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1406] <... futex resumed>) = 0 [pid 1405] <... futex resumed>) = 1 [pid 1406] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1406] <... futex resumed>) = 0 [pid 1405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1406] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] <... futex resumed>) = 0 [pid 1405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1406] <... futex resumed>) = 0 [pid 1406] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1406] <... mount resumed>) = 0 [pid 1406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] <... futex resumed>) = 0 [pid 1405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1406] <... futex resumed>) = 0 [pid 1406] umount2("./file0", MNT_DETACH [pid 1405] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1406] <... umount2 resumed>) = 0 [pid 1405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] <... mmap resumed>) = 0x7fc84e05e000 [pid 1405] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1405] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1407 attached [pid 1407] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1407] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] <... clone resumed>, parent_tid=[1407], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1407 [pid 1405] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1407] <... futex resumed>) = 0 [pid 1405] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1407] umount2("./file0", MNT_DETACH) = 0 [pid 1407] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1407] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1405] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1405] exit_group(0 [pid 1406] <... futex resumed>) = ? [pid 1405] <... exit_group resumed>) = ? [pid 1406] +++ exited with 0 +++ [pid 1407] <... futex resumed>) = ? [pid 1407] +++ exited with 0 +++ [pid 1405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1408 ./strace-static-x86_64: Process 1408 attached [pid 1408] set_robust_list(0x5555564465e0, 24) = 0 [pid 1408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1408] setpgid(0, 0) = 0 [pid 1408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1408] write(3, "1000", 4) = 4 [pid 1408] close(3) = 0 [pid 1408] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1408] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1408] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1409], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1409 [pid 1408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1409 attached [pid 1409] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1409] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1408] <... futex resumed>) = 0 [pid 1408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1409] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1408] <... futex resumed>) = 0 [pid 1408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1409] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1408] <... futex resumed>) = 0 [pid 1408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1408] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1408] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1410], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1410 [pid 1408] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1408] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1410 attached [pid 1410] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1410] umount2("./file0", MNT_DETACH [pid 1409] umount2("./file0", MNT_DETACH [pid 1410] <... umount2 resumed>) = 0 [pid 1410] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1408] <... futex resumed>) = 0 [pid 1410] <... futex resumed>) = 1 [pid 1410] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1409] <... umount2 resumed>) = 0 [pid 1409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1408] exit_group(0) = ? [pid 1410] <... futex resumed>) = ? [pid 1410] +++ exited with 0 +++ [pid 1409] <... futex resumed>) = ? [pid 1409] +++ exited with 0 +++ [pid 1408] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1411 ./strace-static-x86_64: Process 1411 attached [pid 1411] set_robust_list(0x5555564465e0, 24) = 0 [pid 1411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1411] setpgid(0, 0) = 0 [pid 1411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1411] write(3, "1000", 4) = 4 [pid 1411] close(3) = 0 [pid 1411] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1411] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1411] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1412 attached [pid 1412] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1411] <... clone resumed>, parent_tid=[1412], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1412 [pid 1411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1412] <... futex resumed>) = 0 [pid 1411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1412] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1411] <... futex resumed>) = 0 [pid 1411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1412] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1411] <... futex resumed>) = 0 [pid 1412] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1412] <... mount resumed>) = 0 [pid 1411] <... futex resumed>) = 0 [pid 1412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1412] <... futex resumed>) = 0 [pid 1411] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1412] umount2("./file0", MNT_DETACH [pid 1411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1411] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1412] <... umount2 resumed>) = 0 [pid 1411] <... futex resumed>) = 0 [pid 1412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1412] <... futex resumed>) = 0 [pid 1412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1411] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1411] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1413 attached , parent_tid=[1413], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1413 [pid 1413] set_robust_list(0x7fc84e07e9e0, 24 [pid 1411] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1413] <... set_robust_list resumed>) = 0 [pid 1413] umount2("./file0", MNT_DETACH) = 0 [pid 1413] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1413] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1411] <... futex resumed>) = 1 [pid 1413] <... futex resumed>) = 0 [pid 1413] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1411] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1411] exit_group(0) = ? [pid 1413] <... futex resumed>) = ? [pid 1412] <... futex resumed>) = ? [pid 1413] +++ exited with 0 +++ [pid 1412] +++ exited with 0 +++ [pid 1411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1414 ./strace-static-x86_64: Process 1414 attached [pid 1414] set_robust_list(0x5555564465e0, 24) = 0 [pid 1414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1414] setpgid(0, 0) = 0 [pid 1414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1414] write(3, "1000", 4) = 4 [pid 1414] close(3) = 0 [pid 1414] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1414] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1414] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1415 attached [pid 1415] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1414] <... clone resumed>, parent_tid=[1415], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1415 [pid 1414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1415] <... futex resumed>) = 0 [pid 1414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1415] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1414] <... futex resumed>) = 0 [pid 1414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1415] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1414] <... futex resumed>) = 0 [pid 1415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1414] <... futex resumed>) = 0 [pid 1415] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1415] <... mount resumed>) = 0 [pid 1415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1414] <... futex resumed>) = 0 [pid 1415] umount2("./file0", MNT_DETACH [pid 1414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1415] <... umount2 resumed>) = 0 [pid 1414] <... futex resumed>) = 0 [pid 1415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1415] <... futex resumed>) = 0 [pid 1414] <... futex resumed>) = 0 [pid 1415] umount2("./file0", MNT_DETACH [pid 1414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1415] <... umount2 resumed>) = 0 [pid 1415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1414] <... futex resumed>) = 0 [pid 1415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1414] exit_group(0 [pid 1415] <... futex resumed>) = ? [pid 1414] <... exit_group resumed>) = ? [pid 1415] +++ exited with 0 +++ [pid 1414] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1416 ./strace-static-x86_64: Process 1416 attached [pid 1416] set_robust_list(0x5555564465e0, 24) = 0 [pid 1416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1416] setpgid(0, 0) = 0 [pid 1416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1416] write(3, "1000", 4) = 4 [pid 1416] close(3) = 0 [pid 1416] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1416] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1416] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1417 attached [pid 1417] set_robust_list(0x7fc84e09f9e0, 24 [pid 1416] <... clone resumed>, parent_tid=[1417], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1417 [pid 1416] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1417] <... set_robust_list resumed>) = 0 [pid 1417] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1416] <... futex resumed>) = 0 [pid 1416] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1417] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1416] <... futex resumed>) = 0 [pid 1416] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1417] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1416] <... futex resumed>) = 0 [pid 1416] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1416] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1416] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1417] umount2("./file0", MNT_DETACH [pid 1416] <... clone resumed>, parent_tid=[1418], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1418 [pid 1416] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1416] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1418 attached [pid 1418] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1418] umount2("./file0", MNT_DETACH) = 0 [pid 1418] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1416] <... futex resumed>) = 0 [pid 1418] <... futex resumed>) = 1 [pid 1418] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1417] <... umount2 resumed>) = 0 [pid 1417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1417] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1416] exit_group(0) = ? [pid 1418] <... futex resumed>) = ? [pid 1417] <... futex resumed>) = ? [pid 1418] +++ exited with 0 +++ [pid 1417] +++ exited with 0 +++ [pid 1416] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1416, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1419 ./strace-static-x86_64: Process 1419 attached [pid 1419] set_robust_list(0x5555564465e0, 24) = 0 [pid 1419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1419] setpgid(0, 0) = 0 [pid 1419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1419] write(3, "1000", 4) = 4 [pid 1419] close(3) = 0 [pid 1419] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1419] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1419] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1420], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1420 [pid 1419] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1420 attached [pid 1420] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1420] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1419] <... futex resumed>) = 0 [pid 1419] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1420] <... futex resumed>) = 1 [pid 1420] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1419] <... futex resumed>) = 0 [pid 1419] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1420] <... futex resumed>) = 1 [pid 1420] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1419] <... futex resumed>) = 0 [pid 1419] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1419] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1419] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1421], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1421 ./strace-static-x86_64: Process 1421 attached [pid 1419] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1419] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1420] <... futex resumed>) = 1 [pid 1420] umount2("./file0", MNT_DETACH [pid 1421] set_robust_list(0x7fc84e07e9e0, 24 [pid 1420] <... umount2 resumed>) = 0 [pid 1420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1420] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1421] <... set_robust_list resumed>) = 0 [pid 1421] umount2("./file0", MNT_DETACH) = 0 [pid 1421] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1419] <... futex resumed>) = 0 [pid 1419] exit_group(0) = ? [pid 1420] <... futex resumed>) = ? [pid 1421] +++ exited with 0 +++ [pid 1420] +++ exited with 0 +++ [pid 1419] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1419, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1422 attached , child_tidptr=0x5555564465d0) = 1422 [pid 1422] set_robust_list(0x5555564465e0, 24) = 0 [pid 1422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1422] setpgid(0, 0) = 0 [pid 1422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1422] write(3, "1000", 4) = 4 [pid 1422] close(3) = 0 [pid 1422] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1422] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1422] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1423 attached , parent_tid=[1423], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1423 [pid 1423] set_robust_list(0x7fc84e09f9e0, 24 [pid 1422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1422] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1423] <... set_robust_list resumed>) = 0 [pid 1423] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1423] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1422] <... futex resumed>) = 0 [pid 1422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1423] <... futex resumed>) = 0 [pid 1423] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1422] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1423] <... mount resumed>) = 0 [pid 1423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1423] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1422] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1422] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1423] <... futex resumed>) = 0 [pid 1423] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1422] <... futex resumed>) = 0 [pid 1422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1422] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1423] umount2("./file0", MNT_DETACH [pid 1422] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1422] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1424 attached , parent_tid=[1424], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1424 [pid 1423] <... umount2 resumed>) = 0 [pid 1422] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1422] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1424] set_robust_list(0x7fc84e07e9e0, 24 [pid 1423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1424] <... set_robust_list resumed>) = 0 [pid 1423] <... futex resumed>) = 0 [pid 1423] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1424] umount2("./file0", MNT_DETACH) = 0 [pid 1424] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1422] <... futex resumed>) = 0 [pid 1422] exit_group(0) = ? [pid 1423] <... futex resumed>) = ? [pid 1423] +++ exited with 0 +++ [pid 1424] +++ exited with 0 +++ [pid 1422] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1422, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1425 attached , child_tidptr=0x5555564465d0) = 1425 [pid 1425] set_robust_list(0x5555564465e0, 24) = 0 [pid 1425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1425] setpgid(0, 0) = 0 [pid 1425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1425] write(3, "1000", 4) = 4 [pid 1425] close(3) = 0 [pid 1425] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1425] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1425] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1426 attached [pid 1426] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] <... clone resumed>, parent_tid=[1426], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1426 [pid 1425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1426] <... futex resumed>) = 0 [pid 1426] mkdir("./file0", 000 [pid 1425] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1426] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1426] <... futex resumed>) = 0 [pid 1426] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1425] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1426] <... mount resumed>) = 0 [pid 1426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1426] <... futex resumed>) = 0 [pid 1426] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1425] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1426] <... mount resumed>) = 0 [pid 1426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] <... futex resumed>) = 0 [pid 1425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1426] <... futex resumed>) = 0 [pid 1426] umount2("./file0", MNT_DETACH) = 0 [pid 1425] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] <... futex resumed>) = 0 [pid 1425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1425] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1425] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1427 attached , parent_tid=[1427], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1427 [pid 1427] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1427] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1427] <... futex resumed>) = 0 [pid 1427] umount2("./file0", MNT_DETACH [pid 1425] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1427] <... umount2 resumed>) = 0 [pid 1427] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1427] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1425] exit_group(0 [pid 1426] <... futex resumed>) = ? [pid 1425] <... exit_group resumed>) = ? [pid 1426] +++ exited with 0 +++ [pid 1427] <... futex resumed>) = ? [pid 1427] +++ exited with 0 +++ [pid 1425] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1425, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1428 ./strace-static-x86_64: Process 1428 attached [pid 1428] set_robust_list(0x5555564465e0, 24) = 0 [pid 1428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1428] setpgid(0, 0) = 0 [pid 1428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1428] write(3, "1000", 4) = 4 [pid 1428] close(3) = 0 [pid 1428] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1428] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1428] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1429], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1429 ./strace-static-x86_64: Process 1429 attached [pid 1429] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1429] <... futex resumed>) = 0 [pid 1428] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1429] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1428] <... futex resumed>) = 0 [pid 1428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1429] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1428] <... futex resumed>) = 0 [pid 1429] <... mount resumed>) = 0 [pid 1428] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1428] <... futex resumed>) = 0 [pid 1429] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1429] <... mount resumed>) = 0 [pid 1428] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1428] <... futex resumed>) = 0 [pid 1428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1428] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1428] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1429] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1429] umount2("./file0", MNT_DETACH [pid 1428] <... mprotect resumed>) = 0 [pid 1428] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1429] <... umount2 resumed>) = 0 [pid 1428] <... clone resumed>, parent_tid=[1430], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1430 [pid 1429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1428] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1428] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1429] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1430 attached [pid 1430] set_robust_list(0x7fc84e07e9e0, 24 [pid 1429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1430] <... set_robust_list resumed>) = 0 [pid 1430] umount2("./file0", MNT_DETACH) = 0 [pid 1430] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1428] <... futex resumed>) = 0 [pid 1430] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1428] exit_group(0) = ? [pid 1430] <... futex resumed>) = ? [pid 1430] +++ exited with 0 +++ [pid 1429] <... futex resumed>) = ? [pid 1429] +++ exited with 0 +++ [pid 1428] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1428, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1431 ./strace-static-x86_64: Process 1431 attached [pid 1431] set_robust_list(0x5555564465e0, 24) = 0 [pid 1431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1431] setpgid(0, 0) = 0 [pid 1431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1431] write(3, "1000", 4) = 4 [pid 1431] close(3) = 0 [pid 1431] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1431] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1431] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1432], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1432 [pid 1431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1432 attached [pid 1432] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1432] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1431] <... futex resumed>) = 0 [pid 1432] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1432] <... mount resumed>) = 0 [pid 1432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1431] <... futex resumed>) = 0 [pid 1432] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1432] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1431] <... futex resumed>) = 0 [pid 1431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1431] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1431] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1432] umount2("./file0", MNT_DETACH [pid 1431] <... clone resumed>, parent_tid=[1433], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1433 [pid 1431] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1431] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1433 attached [pid 1433] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1433] umount2("./file0", MNT_DETACH) = 0 [pid 1433] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1431] <... futex resumed>) = 0 [pid 1433] <... futex resumed>) = 1 [pid 1433] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1432] <... umount2 resumed>) = 0 [pid 1432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1432] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1431] exit_group(0) = ? [pid 1433] <... futex resumed>) = ? [pid 1432] <... futex resumed>) = 231 [pid 1433] +++ exited with 0 +++ [pid 1432] +++ exited with 0 +++ [pid 1431] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1431, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1434 ./strace-static-x86_64: Process 1434 attached [pid 1434] set_robust_list(0x5555564465e0, 24) = 0 [pid 1434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1434] setpgid(0, 0) = 0 [pid 1434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1434] write(3, "1000", 4) = 4 [pid 1434] close(3) = 0 [pid 1434] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1434] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1434] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1435 attached , parent_tid=[1435], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1435 [pid 1435] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1435] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1435] <... futex resumed>) = 0 [pid 1434] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1435] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1435] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1434] <... futex resumed>) = 0 [pid 1434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1435] <... futex resumed>) = 0 [pid 1435] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1434] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1435] <... mount resumed>) = 0 [pid 1435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1434] <... futex resumed>) = 0 [pid 1434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1434] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1435] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1434] <... futex resumed>) = 0 [pid 1434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1434] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1434] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1434] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1436], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1436 ./strace-static-x86_64: Process 1436 attached [pid 1435] umount2("./file0", MNT_DETACH) = 0 [pid 1434] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1436] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1434] <... futex resumed>) = 0 [pid 1435] <... futex resumed>) = 0 [pid 1436] umount2("./file0", MNT_DETACH [pid 1435] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1434] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1436] <... umount2 resumed>) = 0 [pid 1436] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1434] <... futex resumed>) = 0 [pid 1436] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1434] exit_group(0 [pid 1436] <... futex resumed>) = ? [pid 1435] <... futex resumed>) = ? [pid 1434] <... exit_group resumed>) = ? [pid 1435] +++ exited with 0 +++ [pid 1436] +++ exited with 0 +++ [pid 1434] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1434, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1437 ./strace-static-x86_64: Process 1437 attached [pid 1437] set_robust_list(0x5555564465e0, 24) = 0 [pid 1437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1437] setpgid(0, 0) = 0 [pid 1437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1437] write(3, "1000", 4) = 4 [pid 1437] close(3) = 0 [pid 1437] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1437] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1437] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1437] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1438 attached , parent_tid=[1438], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1438 [pid 1437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1437] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1438] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1438] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1437] <... futex resumed>) = 0 [pid 1437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1438] <... futex resumed>) = 0 [pid 1438] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1437] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1437] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1438] <... futex resumed>) = 0 [pid 1438] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1437] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1437] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1437] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1438] <... futex resumed>) = 0 [pid 1438] umount2("./file0", MNT_DETACH) = 0 [pid 1437] <... futex resumed>) = 0 [pid 1438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1437] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1437] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1437] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1439 attached , parent_tid=[1439], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1439 [pid 1439] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1439] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1437] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1439] <... futex resumed>) = 0 [pid 1439] umount2("./file0", MNT_DETACH [pid 1437] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1439] <... umount2 resumed>) = 0 [pid 1439] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1439] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1437] <... futex resumed>) = 0 [pid 1437] exit_group(0 [pid 1438] <... futex resumed>) = ? [pid 1437] <... exit_group resumed>) = ? [pid 1438] +++ exited with 0 +++ [pid 1439] <... futex resumed>) = ? [pid 1439] +++ exited with 0 +++ [pid 1437] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1437, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1440 attached , child_tidptr=0x5555564465d0) = 1440 [pid 1440] set_robust_list(0x5555564465e0, 24) = 0 [pid 1440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1440] setpgid(0, 0) = 0 [pid 1440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1440] write(3, "1000", 4) = 4 [pid 1440] close(3) = 0 [pid 1440] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1440] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1440] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1441 attached , parent_tid=[1441], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1441 [pid 1440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1441] set_robust_list(0x7fc84e09f9e0, 24 [pid 1440] <... futex resumed>) = 0 [pid 1440] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1441] <... set_robust_list resumed>) = 0 [pid 1441] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1440] <... futex resumed>) = 0 [pid 1440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1440] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1441] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1440] <... futex resumed>) = 0 [pid 1441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1440] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1441] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1441] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1440] <... futex resumed>) = 0 [pid 1440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1440] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1440] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1440] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1441] umount2("./file0", MNT_DETACH) = 0 [pid 1440] <... clone resumed>, parent_tid=[1442], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1442 [pid 1441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1440] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1440] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1442 attached [pid 1442] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1442] umount2("./file0", MNT_DETACH [pid 1441] <... futex resumed>) = 0 [pid 1442] <... umount2 resumed>) = 0 [pid 1441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1442] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1440] <... futex resumed>) = 0 [pid 1440] exit_group(0) = ? [pid 1442] <... futex resumed>) = ? [pid 1441] <... futex resumed>) = ? [pid 1442] +++ exited with 0 +++ [pid 1441] +++ exited with 0 +++ [pid 1440] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1440, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1443 ./strace-static-x86_64: Process 1443 attached [pid 1443] set_robust_list(0x5555564465e0, 24) = 0 [pid 1443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1443] setpgid(0, 0) = 0 [pid 1443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1443] write(3, "1000", 4) = 4 [pid 1443] close(3) = 0 [pid 1443] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1443] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1443] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1444 attached , parent_tid=[1444], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1444 [pid 1443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1443] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1444] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1444] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1443] <... futex resumed>) = 0 [pid 1443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1443] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1444] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1443] <... futex resumed>) = 0 [pid 1443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1443] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1444] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1444] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1443] <... futex resumed>) = 0 [pid 1443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1444] <... futex resumed>) = 0 [pid 1444] umount2("./file0", MNT_DETACH [pid 1443] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1444] <... umount2 resumed>) = 0 [pid 1444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1444] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1443] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1443] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1445 attached , parent_tid=[1445], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1445 [pid 1445] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1445] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1443] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1445] <... futex resumed>) = 0 [pid 1445] umount2("./file0", MNT_DETACH [pid 1443] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1445] <... umount2 resumed>) = 0 [pid 1445] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1445] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1443] exit_group(0 [pid 1444] <... futex resumed>) = ? [pid 1443] <... exit_group resumed>) = ? [pid 1444] +++ exited with 0 +++ [pid 1445] <... futex resumed>) = ? [pid 1445] +++ exited with 0 +++ [pid 1443] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1443, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1446 ./strace-static-x86_64: Process 1446 attached [pid 1446] set_robust_list(0x5555564465e0, 24) = 0 [pid 1446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1446] setpgid(0, 0) = 0 [pid 1446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1446] write(3, "1000", 4) = 4 [pid 1446] close(3) = 0 [pid 1446] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1446] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1446] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1447 attached , parent_tid=[1447], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1447 [pid 1447] set_robust_list(0x7fc84e09f9e0, 24 [pid 1446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1447] <... set_robust_list resumed>) = 0 [pid 1446] <... futex resumed>) = 0 [pid 1447] mkdir("./file0", 000 [pid 1446] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1447] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1447] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1446] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1447] <... futex resumed>) = 0 [pid 1447] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1446] <... futex resumed>) = 0 [pid 1447] <... futex resumed>) = 1 [pid 1446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1447] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1446] <... futex resumed>) = 0 [pid 1446] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1447] <... mount resumed>) = 0 [pid 1447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1446] <... futex resumed>) = 0 [pid 1447] <... futex resumed>) = 1 [pid 1446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1447] umount2("./file0", MNT_DETACH [pid 1446] <... futex resumed>) = 0 [pid 1446] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1447] <... umount2 resumed>) = 0 [pid 1446] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1446] <... mprotect resumed>) = 0 [pid 1447] <... futex resumed>) = 0 [pid 1447] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1446] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1448 attached , parent_tid=[1448], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1448 [pid 1448] set_robust_list(0x7fc84e07e9e0, 24 [pid 1446] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1448] <... set_robust_list resumed>) = 0 [pid 1446] <... futex resumed>) = 0 [pid 1446] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1448] umount2("./file0", MNT_DETACH) = 0 [pid 1448] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1446] <... futex resumed>) = 0 [pid 1448] <... futex resumed>) = 1 [pid 1446] exit_group(0 [pid 1448] ????( [pid 1447] <... futex resumed>) = ? [pid 1446] <... exit_group resumed>) = ? [pid 1448] <... ???? resumed>) = ? [pid 1447] +++ exited with 0 +++ [pid 1448] +++ exited with 0 +++ [pid 1446] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1446, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1449 attached , child_tidptr=0x5555564465d0) = 1449 [pid 1449] set_robust_list(0x5555564465e0, 24) = 0 [pid 1449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1449] setpgid(0, 0) = 0 [pid 1449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1449] write(3, "1000", 4) = 4 [pid 1449] close(3) = 0 [pid 1449] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1449] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1449] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1450 attached , parent_tid=[1450], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1450 [pid 1449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1450] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1450] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1449] <... futex resumed>) = 0 [pid 1450] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1450] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1449] <... futex resumed>) = 0 [pid 1450] <... mount resumed>) = 0 [pid 1449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1450] <... futex resumed>) = 1 [pid 1449] <... futex resumed>) = 0 [pid 1449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1450] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1449] <... futex resumed>) = 0 [pid 1449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1449] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1449] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1449] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1450] umount2("./file0", MNT_DETACH [pid 1449] <... clone resumed>, parent_tid=[1451], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1451 [pid 1449] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1449] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1451 attached [pid 1451] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1451] umount2("./file0", MNT_DETACH) = 0 [pid 1451] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1449] <... futex resumed>) = 0 [pid 1451] <... futex resumed>) = 1 [pid 1451] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1450] <... umount2 resumed>) = 0 [pid 1450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1450] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1449] exit_group(0) = ? [pid 1450] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 1451] <... futex resumed>) = ? [pid 1451] +++ exited with 0 +++ [pid 1450] +++ exited with 0 +++ [pid 1449] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1449, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1452 attached , child_tidptr=0x5555564465d0) = 1452 [pid 1452] set_robust_list(0x5555564465e0, 24) = 0 [pid 1452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1452] setpgid(0, 0) = 0 [pid 1452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1452] write(3, "1000", 4) = 4 [pid 1452] close(3) = 0 [pid 1452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1452] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1452] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1453], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1453 ./strace-static-x86_64: Process 1453 attached [pid 1453] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1453] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1453] <... futex resumed>) = 0 [pid 1453] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1453] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1452] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1453] <... futex resumed>) = 0 [pid 1453] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1452] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1452] <... futex resumed>) = 0 [pid 1453] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1452] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1453] <... mount resumed>) = 0 [pid 1453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1452] <... futex resumed>) = 0 [pid 1452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1452] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1452] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1453] umount2("./file0", MNT_DETACH [pid 1452] <... mprotect resumed>) = 0 [pid 1452] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1454], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1454 [pid 1453] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1454 attached [pid 1452] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1452] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1454] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1454] umount2("./file0", MNT_DETACH [pid 1453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1454] <... umount2 resumed>) = 0 [pid 1453] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1454] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1452] <... futex resumed>) = 0 [pid 1452] exit_group(0) = ? [pid 1453] <... futex resumed>) = ? [pid 1454] <... futex resumed>) = ? [pid 1453] +++ exited with 0 +++ [pid 1454] +++ exited with 0 +++ [pid 1452] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1452, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1455 ./strace-static-x86_64: Process 1455 attached [pid 1455] set_robust_list(0x5555564465e0, 24) = 0 [pid 1455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1455] setpgid(0, 0) = 0 [pid 1455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1455] write(3, "1000", 4) = 4 [pid 1455] close(3) = 0 [pid 1455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1455] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1455] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1456], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1456 [pid 1455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1455] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1456 attached [pid 1456] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1456] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1455] <... futex resumed>) = 0 [pid 1455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1455] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1456] <... futex resumed>) = 1 [pid 1456] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1455] <... futex resumed>) = 0 [pid 1455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1455] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1456] <... futex resumed>) = 1 [pid 1456] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1455] <... futex resumed>) = 0 [pid 1456] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1455] <... futex resumed>) = 0 [pid 1456] umount2("./file0", MNT_DETACH [pid 1455] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1456] <... umount2 resumed>) = 0 [pid 1455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1455] <... mmap resumed>) = 0x7fc84e05e000 [pid 1456] <... futex resumed>) = 0 [pid 1455] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1456] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1455] <... mprotect resumed>) = 0 [pid 1455] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1457 attached [pid 1457] set_robust_list(0x7fc84e07e9e0, 24 [pid 1455] <... clone resumed>, parent_tid=[1457], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1457 [pid 1457] <... set_robust_list resumed>) = 0 [pid 1455] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1457] umount2("./file0", MNT_DETACH [pid 1455] <... futex resumed>) = 0 [pid 1457] <... umount2 resumed>) = 0 [pid 1455] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1457] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1457] <... futex resumed>) = 0 [pid 1457] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1455] exit_group(0) = ? [pid 1456] <... futex resumed>) = ? [pid 1456] +++ exited with 0 +++ [pid 1457] <... futex resumed>) = ? [pid 1457] +++ exited with 0 +++ [pid 1455] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1455, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1458 ./strace-static-x86_64: Process 1458 attached [pid 1458] set_robust_list(0x5555564465e0, 24) = 0 [pid 1458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1458] setpgid(0, 0) = 0 [pid 1458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1458] write(3, "1000", 4) = 4 [pid 1458] close(3) = 0 [pid 1458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1458] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1458] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1459 attached , parent_tid=[1459], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1459 [pid 1458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1458] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1459] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1459] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1458] <... futex resumed>) = 0 [pid 1459] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1459] <... futex resumed>) = 0 [pid 1458] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1459] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1458] <... futex resumed>) = 0 [pid 1459] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1458] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1459] <... mount resumed>) = 0 [pid 1459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1458] <... futex resumed>) = 0 [pid 1459] umount2("./file0", MNT_DETACH [pid 1458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1458] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1458] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1459] <... umount2 resumed>) = 0 [pid 1458] <... mprotect resumed>) = 0 [pid 1459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1458] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1459] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1460 attached [pid 1460] set_robust_list(0x7fc84e07e9e0, 24 [pid 1458] <... clone resumed>, parent_tid=[1460], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1460 [pid 1459] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1458] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1460] <... set_robust_list resumed>) = 0 [pid 1458] <... futex resumed>) = 0 [pid 1460] umount2("./file0", MNT_DETACH [pid 1458] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1460] <... umount2 resumed>) = 0 [pid 1460] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1458] <... futex resumed>) = 0 [pid 1458] exit_group(0) = ? [pid 1459] <... futex resumed>) = ? [pid 1460] <... futex resumed>) = ? [pid 1460] +++ exited with 0 +++ [pid 1459] +++ exited with 0 +++ [pid 1458] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1458, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1461 ./strace-static-x86_64: Process 1461 attached [pid 1461] set_robust_list(0x5555564465e0, 24) = 0 [pid 1461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1461] setpgid(0, 0) = 0 [pid 1461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1461] write(3, "1000", 4) = 4 [pid 1461] close(3) = 0 [pid 1461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1461] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1461] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1461] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1462], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1462 [pid 1461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1461] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1462 attached [pid 1462] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1462] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1461] <... futex resumed>) = 0 [pid 1461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1461] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1462] <... futex resumed>) = 1 [pid 1462] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1461] <... futex resumed>) = 0 [pid 1461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1461] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1462] <... futex resumed>) = 1 [pid 1462] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1461] <... futex resumed>) = 0 [pid 1462] umount2("./file0", MNT_DETACH [pid 1461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1461] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1462] <... umount2 resumed>) = 0 [pid 1461] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1461] <... mmap resumed>) = 0x7fc84e05e000 [pid 1462] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1461] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1461] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1463 attached , parent_tid=[1463], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1463 [pid 1463] set_robust_list(0x7fc84e07e9e0, 24 [pid 1461] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1463] <... set_robust_list resumed>) = 0 [pid 1461] <... futex resumed>) = 0 [pid 1463] umount2("./file0", MNT_DETACH [pid 1461] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1463] <... umount2 resumed>) = 0 [pid 1463] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1461] <... futex resumed>) = 0 [pid 1461] exit_group(0 [pid 1462] <... futex resumed>) = ? [pid 1461] <... exit_group resumed>) = ? [pid 1462] +++ exited with 0 +++ [pid 1463] <... futex resumed>) = ? [pid 1463] +++ exited with 0 +++ [pid 1461] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1461, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1464 ./strace-static-x86_64: Process 1464 attached [pid 1464] set_robust_list(0x5555564465e0, 24) = 0 [pid 1464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1464] setpgid(0, 0) = 0 [pid 1464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1464] write(3, "1000", 4) = 4 [pid 1464] close(3) = 0 [pid 1464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1464] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1464] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1465], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1465 [pid 1464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1465 attached [pid 1465] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1465] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1464] <... futex resumed>) = 0 [pid 1464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1465] <... futex resumed>) = 1 [pid 1465] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1464] <... futex resumed>) = 0 [pid 1465] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1465] <... mount resumed>) = 0 [pid 1465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1464] <... futex resumed>) = 0 [pid 1464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1464] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1464] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1466], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1466 [pid 1464] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1464] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1465] <... futex resumed>) = 1 [pid 1465] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1466 attached [pid 1466] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1465] <... umount2 resumed>) = 0 [pid 1466] umount2("./file0", MNT_DETACH [pid 1465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1466] <... umount2 resumed>) = 0 [pid 1465] <... futex resumed>) = 0 [pid 1466] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1464] <... futex resumed>) = 0 [pid 1466] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1464] exit_group(0) = ? [pid 1466] <... futex resumed>) = ? [pid 1466] +++ exited with 0 +++ [pid 1465] +++ exited with 0 +++ [pid 1464] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1464, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1467 attached , child_tidptr=0x5555564465d0) = 1467 [pid 1467] set_robust_list(0x5555564465e0, 24) = 0 [pid 1467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1467] setpgid(0, 0) = 0 [pid 1467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1467] write(3, "1000", 4) = 4 [pid 1467] close(3) = 0 [pid 1467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1467] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1467] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1468 attached [pid 1468] set_robust_list(0x7fc84e09f9e0, 24 [pid 1467] <... clone resumed>, parent_tid=[1468], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1468 [pid 1468] <... set_robust_list resumed>) = 0 [pid 1467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1468] mkdir("./file0", 000 [pid 1467] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1468] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1467] <... futex resumed>) = 0 [pid 1467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1467] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1468] <... futex resumed>) = 1 [pid 1468] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1467] <... futex resumed>) = 0 [pid 1468] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1467] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1468] <... mount resumed>) = 0 [pid 1468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1467] <... futex resumed>) = 0 [pid 1468] umount2("./file0", MNT_DETACH [pid 1467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1467] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1467] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1467] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1469 attached , parent_tid=[1469], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1469 [pid 1469] set_robust_list(0x7fc84e07e9e0, 24 [pid 1467] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1469] <... set_robust_list resumed>) = 0 [pid 1467] <... futex resumed>) = 0 [pid 1469] umount2("./file0", MNT_DETACH [pid 1467] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1469] <... umount2 resumed>) = 0 [pid 1469] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1467] <... futex resumed>) = 0 [pid 1469] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1468] <... umount2 resumed>) = 0 [pid 1468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1468] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1467] exit_group(0) = ? [pid 1468] <... futex resumed>) = ? [pid 1469] <... futex resumed>) = ? [pid 1468] +++ exited with 0 +++ [pid 1469] +++ exited with 0 +++ [pid 1467] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1467, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1470 attached , child_tidptr=0x5555564465d0) = 1470 [pid 1470] set_robust_list(0x5555564465e0, 24) = 0 [pid 1470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1470] setpgid(0, 0) = 0 [pid 1470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1470] write(3, "1000", 4) = 4 [pid 1470] close(3) = 0 [pid 1470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1470] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1470] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1471], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1471 ./strace-static-x86_64: Process 1471 attached [pid 1470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1471] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1471] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1470] <... futex resumed>) = 0 [pid 1471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1471] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1470] <... futex resumed>) = 0 [pid 1470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1471] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1470] <... futex resumed>) = 0 [pid 1470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1471] umount2("./file0", MNT_DETACH [pid 1470] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1470] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1471] <... umount2 resumed>) = 0 [pid 1470] <... clone resumed>, parent_tid=[1472], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1472 [pid 1471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1470] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1470] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1472 attached [pid 1472] set_robust_list(0x7fc84e07e9e0, 24 [pid 1471] <... futex resumed>) = 0 [pid 1472] <... set_robust_list resumed>) = 0 [pid 1471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1472] umount2("./file0", MNT_DETACH) = 0 [pid 1472] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1470] <... futex resumed>) = 0 [pid 1472] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1470] exit_group(0 [pid 1472] <... futex resumed>) = 231 [pid 1470] <... exit_group resumed>) = ? [pid 1471] <... futex resumed>) = ? [pid 1471] +++ exited with 0 +++ [pid 1472] +++ exited with 0 +++ [pid 1470] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1470, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1473 ./strace-static-x86_64: Process 1473 attached [pid 1473] set_robust_list(0x5555564465e0, 24) = 0 [pid 1473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1473] setpgid(0, 0) = 0 [pid 1473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1473] write(3, "1000", 4) = 4 [pid 1473] close(3) = 0 [pid 1473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1473] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1473] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1473] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1474 attached , parent_tid=[1474], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1474 [pid 1474] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1473] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1474] <... futex resumed>) = 0 [pid 1474] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1473] <... futex resumed>) = 0 [pid 1473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1474] <... futex resumed>) = 0 [pid 1474] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1473] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1474] <... mount resumed>) = 0 [pid 1474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1474] <... futex resumed>) = 0 [pid 1474] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1473] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1474] <... mount resumed>) = 0 [pid 1474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1473] <... futex resumed>) = 0 [pid 1473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1474] <... futex resumed>) = 0 [pid 1474] umount2("./file0", MNT_DETACH [pid 1473] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1474] <... umount2 resumed>) = 0 [pid 1473] <... futex resumed>) = 0 [pid 1474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1473] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1473] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1473] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1475 attached [pid 1475] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1475] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1473] <... clone resumed>, parent_tid=[1475], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1475 [pid 1473] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1475] <... futex resumed>) = 0 [pid 1475] umount2("./file0", MNT_DETACH) = 0 [pid 1473] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1475] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1473] <... futex resumed>) = 0 [pid 1473] exit_group(0 [pid 1474] <... futex resumed>) = ? [pid 1474] +++ exited with 0 +++ [pid 1473] <... exit_group resumed>) = ? [pid 1475] +++ exited with 0 +++ [pid 1473] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1473, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1476 ./strace-static-x86_64: Process 1476 attached [pid 1476] set_robust_list(0x5555564465e0, 24) = 0 [pid 1476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1476] setpgid(0, 0) = 0 [pid 1476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1476] write(3, "1000", 4) = 4 [pid 1476] close(3) = 0 [pid 1476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1476] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1476] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1477 attached , parent_tid=[1477], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1477 [pid 1477] set_robust_list(0x7fc84e09f9e0, 24 [pid 1476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1477] <... set_robust_list resumed>) = 0 [pid 1477] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1477] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1476] <... futex resumed>) = 0 [pid 1476] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1477] <... futex resumed>) = 0 [pid 1477] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1476] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1477] <... mount resumed>) = 0 [pid 1477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1477] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1477] <... futex resumed>) = 0 [pid 1477] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1476] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1477] <... mount resumed>) = 0 [pid 1477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1476] <... futex resumed>) = 0 [pid 1476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1476] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1476] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1477] umount2("./file0", MNT_DETACH [pid 1476] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1478], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1478 [pid 1477] <... umount2 resumed>) = 0 [pid 1476] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1476] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1478 attached [pid 1478] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1478] umount2("./file0", MNT_DETACH [pid 1477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1478] <... umount2 resumed>) = 0 [pid 1478] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1477] <... futex resumed>) = 0 [pid 1477] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1476] <... futex resumed>) = 0 [pid 1478] <... futex resumed>) = 1 [pid 1476] exit_group(0) = ? [pid 1478] +++ exited with 0 +++ [pid 1477] <... futex resumed>) = ? [pid 1477] +++ exited with 0 +++ [pid 1476] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1476, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1479 ./strace-static-x86_64: Process 1479 attached [pid 1479] set_robust_list(0x5555564465e0, 24) = 0 [pid 1479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1479] setpgid(0, 0) = 0 [pid 1479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1479] write(3, "1000", 4) = 4 [pid 1479] close(3) = 0 [pid 1479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1479] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1479] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1479] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1480], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1480 ./strace-static-x86_64: Process 1480 attached [pid 1480] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1480] <... futex resumed>) = 0 [pid 1480] mkdir("./file0", 000 [pid 1479] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1480] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1480] <... futex resumed>) = 0 [pid 1480] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1479] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1480] <... mount resumed>) = 0 [pid 1480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1480] <... futex resumed>) = 0 [pid 1480] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1479] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1480] <... futex resumed>) = 0 [pid 1480] umount2("./file0", MNT_DETACH [pid 1479] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1480] <... umount2 resumed>) = 0 [pid 1480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1479] <... futex resumed>) = 0 [pid 1479] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1479] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1479] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1481 attached , parent_tid=[1481], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1481 [pid 1481] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1481] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1479] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1481] <... futex resumed>) = 0 [pid 1481] umount2("./file0", MNT_DETACH [pid 1479] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1481] <... umount2 resumed>) = 0 [pid 1481] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1479] <... futex resumed>) = 0 [pid 1479] exit_group(0) = ? [pid 1480] <... futex resumed>) = ? [pid 1480] +++ exited with 0 +++ [pid 1481] +++ exited with 0 +++ [pid 1479] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1479, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1482 attached , child_tidptr=0x5555564465d0) = 1482 [pid 1482] set_robust_list(0x5555564465e0, 24) = 0 [pid 1482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1482] setpgid(0, 0) = 0 [pid 1482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1482] write(3, "1000", 4) = 4 [pid 1482] close(3) = 0 [pid 1482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1482] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1482] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1483], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1483 ./strace-static-x86_64: Process 1483 attached [pid 1483] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1483] <... futex resumed>) = 0 [pid 1482] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1483] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1482] <... futex resumed>) = 0 [pid 1483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1482] <... futex resumed>) = 0 [pid 1483] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1482] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1483] <... mount resumed>) = 0 [pid 1483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1482] <... futex resumed>) = 0 [pid 1483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1482] <... futex resumed>) = 0 [pid 1483] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1482] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1483] <... mount resumed>) = 0 [pid 1483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1482] <... futex resumed>) = 0 [pid 1483] umount2("./file0", MNT_DETACH [pid 1482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1483] <... umount2 resumed>) = 0 [pid 1482] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1482] <... futex resumed>) = 0 [pid 1483] <... futex resumed>) = 0 [pid 1482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1482] <... mmap resumed>) = 0x7fc84e05e000 [pid 1482] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1482] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1484 attached [pid 1484] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1484] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1482] <... clone resumed>, parent_tid=[1484], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1484 [pid 1482] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1484] <... futex resumed>) = 0 [pid 1484] umount2("./file0", MNT_DETACH [pid 1482] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1484] <... umount2 resumed>) = 0 [pid 1484] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1484] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1482] <... futex resumed>) = 0 [pid 1482] exit_group(0) = ? [pid 1483] <... futex resumed>) = ? [pid 1484] <... futex resumed>) = ? [pid 1483] +++ exited with 0 +++ [pid 1484] +++ exited with 0 +++ [pid 1482] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1482, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1485 ./strace-static-x86_64: Process 1485 attached [pid 1485] set_robust_list(0x5555564465e0, 24) = 0 [pid 1485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1485] setpgid(0, 0) = 0 [pid 1485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1485] write(3, "1000", 4) = 4 [pid 1485] close(3) = 0 [pid 1485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1485] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1485] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1486], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1486 [pid 1485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1485] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1486 attached [pid 1486] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1486] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1485] <... futex resumed>) = 0 [pid 1485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1485] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1486] <... futex resumed>) = 1 [pid 1486] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1485] <... futex resumed>) = 0 [pid 1486] <... futex resumed>) = 1 [pid 1485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1486] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1485] <... futex resumed>) = 0 [pid 1485] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1486] <... mount resumed>) = 0 [pid 1486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1485] <... futex resumed>) = 0 [pid 1485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1485] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1485] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1485] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1487 attached [pid 1486] umount2("./file0", MNT_DETACH [pid 1485] <... clone resumed>, parent_tid=[1487], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1487 [pid 1485] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1485] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1487] set_robust_list(0x7fc84e07e9e0, 24 [pid 1486] <... umount2 resumed>) = 0 [pid 1487] <... set_robust_list resumed>) = 0 [pid 1486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1487] umount2("./file0", MNT_DETACH [pid 1486] <... futex resumed>) = 0 [pid 1486] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1487] <... umount2 resumed>) = 0 [pid 1487] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1485] <... futex resumed>) = 0 [pid 1487] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1485] exit_group(0 [pid 1487] <... futex resumed>) = ? [pid 1486] <... futex resumed>) = ? [pid 1485] <... exit_group resumed>) = ? [pid 1486] +++ exited with 0 +++ [pid 1487] +++ exited with 0 +++ [pid 1485] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1485, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1488 attached , child_tidptr=0x5555564465d0) = 1488 [pid 1488] set_robust_list(0x5555564465e0, 24) = 0 [pid 1488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1488] setpgid(0, 0) = 0 [pid 1488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1488] write(3, "1000", 4) = 4 [pid 1488] close(3) = 0 [pid 1488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1488] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1488] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1489 attached , parent_tid=[1489], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1489 [pid 1489] set_robust_list(0x7fc84e09f9e0, 24 [pid 1488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1489] <... set_robust_list resumed>) = 0 [pid 1488] <... futex resumed>) = 0 [pid 1489] mkdir("./file0", 000 [pid 1488] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1489] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1488] <... futex resumed>) = 0 [pid 1488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1488] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1489] <... futex resumed>) = 1 [pid 1489] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1488] <... futex resumed>) = 0 [pid 1488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1488] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1489] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1488] <... futex resumed>) = 0 [pid 1488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1488] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1488] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1488] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1490], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1490 [pid 1489] umount2("./file0", MNT_DETACH [pid 1488] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1488] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1490 attached [pid 1490] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1490] umount2("./file0", MNT_DETACH [pid 1489] <... umount2 resumed>) = 0 [pid 1490] <... umount2 resumed>) = 0 [pid 1489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1490] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1488] <... futex resumed>) = 0 [pid 1488] exit_group(0) = ? [pid 1489] <... futex resumed>) = ? [pid 1490] <... futex resumed>) = ? [pid 1490] +++ exited with 0 +++ [pid 1489] +++ exited with 0 +++ [pid 1488] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1488, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1491 attached , child_tidptr=0x5555564465d0) = 1491 [pid 1491] set_robust_list(0x5555564465e0, 24) = 0 [pid 1491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1491] setpgid(0, 0) = 0 [pid 1491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1491] write(3, "1000", 4) = 4 [pid 1491] close(3) = 0 [pid 1491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1491] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1491] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1491] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1492 attached , parent_tid=[1492], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1492 [pid 1492] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1492] <... futex resumed>) = 0 [pid 1492] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1492] <... futex resumed>) = 0 [pid 1492] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1492] <... futex resumed>) = 0 [pid 1492] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1492] <... mount resumed>) = 0 [pid 1492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1491] <... futex resumed>) = 0 [pid 1491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1492] <... futex resumed>) = 0 [pid 1492] umount2("./file0", MNT_DETACH) = 0 [pid 1492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1492] <... futex resumed>) = 0 [pid 1492] umount2("./file0", MNT_DETACH) = 0 [pid 1492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1491] exit_group(0) = ? [pid 1492] <... futex resumed>) = ? [pid 1492] +++ exited with 0 +++ [pid 1491] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1491, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1493 attached , child_tidptr=0x5555564465d0) = 1493 [pid 1493] set_robust_list(0x5555564465e0, 24) = 0 [pid 1493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1493] setpgid(0, 0) = 0 [pid 1493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1493] write(3, "1000", 4) = 4 [pid 1493] close(3) = 0 [pid 1493] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1493] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1493] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1494], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1494 [pid 1493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1494 attached [pid 1494] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1494] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1493] <... futex resumed>) = 0 [pid 1493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1494] <... futex resumed>) = 1 [pid 1494] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1493] <... futex resumed>) = 0 [pid 1493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1494] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1494] <... mount resumed>) = 0 [pid 1494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1493] <... futex resumed>) = 0 [pid 1493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1493] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1494] umount2("./file0", MNT_DETACH [pid 1493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1493] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1493] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1494] <... umount2 resumed>) = 0 [pid 1493] <... clone resumed>, parent_tid=[1495], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1495 [pid 1493] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1493] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1495 attached [pid 1494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1495] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1495] umount2("./file0", MNT_DETACH) = 0 [pid 1495] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1493] <... futex resumed>) = 0 [pid 1493] exit_group(0) = ? [pid 1494] <... futex resumed>) = ? [pid 1494] +++ exited with 0 +++ [pid 1495] +++ exited with 0 +++ [pid 1493] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1493, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1496 ./strace-static-x86_64: Process 1496 attached [pid 1496] set_robust_list(0x5555564465e0, 24) = 0 [pid 1496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1496] setpgid(0, 0) = 0 [pid 1496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1496] write(3, "1000", 4) = 4 [pid 1496] close(3) = 0 [pid 1496] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1496] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1496] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1497 attached , parent_tid=[1497], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1497 [pid 1497] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1497] <... futex resumed>) = 0 [pid 1497] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1497] <... futex resumed>) = 0 [pid 1497] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1497] <... mount resumed>) = 0 [pid 1497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1497] <... futex resumed>) = 0 [pid 1497] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1497] <... mount resumed>) = 0 [pid 1497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] <... futex resumed>) = 0 [pid 1496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1497] <... futex resumed>) = 0 [pid 1496] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1497] umount2("./file0", MNT_DETACH [pid 1496] <... futex resumed>) = 0 [pid 1497] <... umount2 resumed>) = 0 [pid 1497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1496] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1496] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1498 attached [pid 1498] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1496] <... clone resumed>, parent_tid=[1498], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1498 [pid 1498] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1498] <... futex resumed>) = 0 [pid 1496] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1498] umount2("./file0", MNT_DETACH) = 0 [pid 1498] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1496] <... futex resumed>) = 0 [pid 1498] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1496] exit_group(0 [pid 1497] <... futex resumed>) = 231 [pid 1498] <... futex resumed>) = ? [pid 1496] <... exit_group resumed>) = ? [pid 1497] +++ exited with 0 +++ [pid 1498] +++ exited with 0 +++ [pid 1496] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1496, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1499 attached , child_tidptr=0x5555564465d0) = 1499 [pid 1499] set_robust_list(0x5555564465e0, 24) = 0 [pid 1499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1499] setpgid(0, 0) = 0 [pid 1499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1499] write(3, "1000", 4) = 4 [pid 1499] close(3) = 0 [pid 1499] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1499] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1499] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1500 attached , parent_tid=[1500], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1500 [pid 1499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1500] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1500] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1499] <... futex resumed>) = 0 [pid 1499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1500] <... futex resumed>) = 0 [pid 1500] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1500] <... futex resumed>) = 1 [pid 1499] <... futex resumed>) = 0 [pid 1499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1500] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1499] <... futex resumed>) = 0 [pid 1499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1499] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1499] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1499] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1500] umount2("./file0", MNT_DETACH) = 0 [pid 1499] <... clone resumed>, parent_tid=[1501], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1501 [pid 1500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1499] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1499] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1501 attached [pid 1501] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1501] umount2("./file0", MNT_DETACH [pid 1500] <... futex resumed>) = 0 [pid 1500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1501] <... umount2 resumed>) = 0 [pid 1501] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1499] <... futex resumed>) = 0 [pid 1499] exit_group(0) = ? [pid 1500] <... futex resumed>) = ? [pid 1501] <... futex resumed>) = ? [pid 1501] +++ exited with 0 +++ [pid 1500] +++ exited with 0 +++ [pid 1499] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1499, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1502 ./strace-static-x86_64: Process 1502 attached [pid 1502] set_robust_list(0x5555564465e0, 24) = 0 [pid 1502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1502] setpgid(0, 0) = 0 [pid 1502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1502] write(3, "1000", 4) = 4 [pid 1502] close(3) = 0 [pid 1502] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1502] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1502] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1503], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1503 [pid 1502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1503 attached [pid 1503] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1503] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1502] <... futex resumed>) = 0 [pid 1503] <... futex resumed>) = 1 [pid 1502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1503] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1502] <... futex resumed>) = 0 [pid 1502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1503] <... mount resumed>) = 0 [pid 1503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1502] <... futex resumed>) = 0 [pid 1503] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1503] <... mount resumed>) = 0 [pid 1503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1502] <... futex resumed>) = 0 [pid 1502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1502] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1502] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1502] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1504], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1504 [pid 1502] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1502] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1504 attached [pid 1504] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1504] umount2("./file0", MNT_DETACH [pid 1503] umount2("./file0", MNT_DETACH) = 0 [pid 1503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1504] <... umount2 resumed>) = 0 [pid 1504] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1502] <... futex resumed>) = 0 [pid 1502] exit_group(0) = ? [pid 1504] <... futex resumed>) = ? [pid 1504] +++ exited with 0 +++ [pid 1503] +++ exited with 0 +++ [pid 1502] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1505 ./strace-static-x86_64: Process 1505 attached [pid 1505] set_robust_list(0x5555564465e0, 24) = 0 [pid 1505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1505] setpgid(0, 0) = 0 [pid 1505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1505] write(3, "1000", 4) = 4 [pid 1505] close(3) = 0 [pid 1505] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1505] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1505] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1506], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1506 [pid 1505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1506 attached [pid 1506] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1506] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1505] <... futex resumed>) = 0 [pid 1505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1506] <... futex resumed>) = 1 [pid 1506] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1505] <... futex resumed>) = 0 [pid 1505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1506] <... futex resumed>) = 1 [pid 1506] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1505] <... futex resumed>) = 0 [pid 1505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1505] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1505] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1507 attached [pid 1506] <... futex resumed>) = 1 [pid 1506] umount2("./file0", MNT_DETACH [pid 1507] set_robust_list(0x7fc84e07e9e0, 24 [pid 1505] <... clone resumed>, parent_tid=[1507], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1507 [pid 1507] <... set_robust_list resumed>) = 0 [pid 1505] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1506] <... umount2 resumed>) = 0 [pid 1507] umount2("./file0", MNT_DETACH [pid 1506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1505] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1506] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1507] <... umount2 resumed>) = 0 [pid 1507] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1507] <... futex resumed>) = 0 [pid 1507] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1505] exit_group(0) = ? [pid 1506] <... futex resumed>) = ? [pid 1506] +++ exited with 0 +++ [pid 1507] <... futex resumed>) = ? [pid 1507] +++ exited with 0 +++ [pid 1505] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1508 attached , child_tidptr=0x5555564465d0) = 1508 [pid 1508] set_robust_list(0x5555564465e0, 24) = 0 [pid 1508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1508] setpgid(0, 0) = 0 [pid 1508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1508] write(3, "1000", 4) = 4 [pid 1508] close(3) = 0 [pid 1508] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1508] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1508] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1509 attached , parent_tid=[1509], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1509 [pid 1509] set_robust_list(0x7fc84e09f9e0, 24 [pid 1508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1509] <... set_robust_list resumed>) = 0 [pid 1508] <... futex resumed>) = 0 [pid 1509] mkdir("./file0", 000 [pid 1508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1509] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1508] <... futex resumed>) = 0 [pid 1508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1509] <... futex resumed>) = 0 [pid 1509] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1508] <... futex resumed>) = 0 [pid 1508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1509] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1508] <... futex resumed>) = 0 [pid 1508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1508] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1508] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1508] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1509] umount2("./file0", MNT_DETACH [pid 1508] <... clone resumed>, parent_tid=[1510], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1510 [pid 1508] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1510 attached ) = 0 [pid 1510] set_robust_list(0x7fc84e07e9e0, 24 [pid 1508] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1510] <... set_robust_list resumed>) = 0 [pid 1510] umount2("./file0", MNT_DETACH) = 0 [pid 1510] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1508] <... futex resumed>) = 0 [pid 1510] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1509] <... umount2 resumed>) = 0 [pid 1509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1508] exit_group(0) = ? [pid 1510] <... futex resumed>) = ? [pid 1509] <... futex resumed>) = ? [pid 1510] +++ exited with 0 +++ [pid 1509] +++ exited with 0 +++ [pid 1508] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1511 ./strace-static-x86_64: Process 1511 attached [pid 1511] set_robust_list(0x5555564465e0, 24) = 0 [pid 1511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1511] setpgid(0, 0) = 0 [pid 1511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1511] write(3, "1000", 4) = 4 [pid 1511] close(3) = 0 [pid 1511] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1511] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1511] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1512 attached , parent_tid=[1512], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1512 [pid 1512] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1512] <... futex resumed>) = 0 [pid 1512] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1511] <... futex resumed>) = 0 [pid 1512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1512] <... futex resumed>) = 0 [pid 1511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1512] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1511] <... futex resumed>) = 0 [pid 1511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1512] <... futex resumed>) = 0 [pid 1511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1512] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1511] <... futex resumed>) = 0 [pid 1511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1511] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1511] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1512] umount2("./file0", MNT_DETACH [pid 1511] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1513], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1513 [pid 1511] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1511] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1512] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1513 attached [pid 1513] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1513] umount2("./file0", MNT_DETACH [pid 1512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1513] <... umount2 resumed>) = 0 [pid 1513] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1511] <... futex resumed>) = 0 [pid 1511] exit_group(0) = ? [pid 1512] <... futex resumed>) = ? [pid 1513] <... futex resumed>) = ? [pid 1513] +++ exited with 0 +++ [pid 1512] +++ exited with 0 +++ [pid 1511] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1514 ./strace-static-x86_64: Process 1514 attached [pid 1514] set_robust_list(0x5555564465e0, 24) = 0 [pid 1514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1514] setpgid(0, 0) = 0 [pid 1514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1514] write(3, "1000", 4) = 4 [pid 1514] close(3) = 0 [pid 1514] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1514] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1514] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1515 attached , parent_tid=[1515], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1515 [pid 1515] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1515] <... futex resumed>) = 0 [pid 1515] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1515] <... futex resumed>) = 0 [pid 1515] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1515] <... futex resumed>) = 0 [pid 1514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1515] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1514] <... futex resumed>) = 0 [pid 1514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1515] umount2("./file0", MNT_DETACH [pid 1514] <... futex resumed>) = 0 [pid 1514] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1514] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1515] <... umount2 resumed>) = 0 [pid 1515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1514] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1516 attached [pid 1515] <... futex resumed>) = 0 [pid 1516] set_robust_list(0x7fc84e07e9e0, 24 [pid 1515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1514] <... clone resumed>, parent_tid=[1516], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1516 [pid 1516] <... set_robust_list resumed>) = 0 [pid 1516] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1514] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1516] <... futex resumed>) = 0 [pid 1514] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1516] umount2("./file0", MNT_DETACH) = 0 [pid 1516] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1514] <... futex resumed>) = 0 [pid 1514] exit_group(0) = ? [pid 1516] <... futex resumed>) = ? [pid 1515] <... futex resumed>) = ? [pid 1516] +++ exited with 0 +++ [pid 1515] +++ exited with 0 +++ [pid 1514] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1514, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1517 attached , child_tidptr=0x5555564465d0) = 1517 [pid 1517] set_robust_list(0x5555564465e0, 24) = 0 [pid 1517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1517] setpgid(0, 0) = 0 [pid 1517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1517] write(3, "1000", 4) = 4 [pid 1517] close(3) = 0 [pid 1517] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1517] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1517] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1518 attached [pid 1518] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] <... clone resumed>, parent_tid=[1518], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1518 [pid 1517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1518] <... futex resumed>) = 0 [pid 1518] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1518] <... futex resumed>) = 0 [pid 1518] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1518] <... mount resumed>) = 0 [pid 1518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1518] <... futex resumed>) = 0 [pid 1518] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1518] <... mount resumed>) = 0 [pid 1518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] <... futex resumed>) = 0 [pid 1517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1518] <... futex resumed>) = 0 [pid 1518] umount2("./file0", MNT_DETACH [pid 1517] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1518] <... umount2 resumed>) = 0 [pid 1517] <... futex resumed>) = 0 [pid 1518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1517] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1517] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1519 attached , parent_tid=[1519], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1519 [pid 1519] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1519] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1519] <... futex resumed>) = 0 [pid 1517] <... futex resumed>) = 1 [pid 1519] umount2("./file0", MNT_DETACH) = 0 [pid 1517] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1519] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1519] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1517] exit_group(0) = ? [pid 1518] <... futex resumed>) = ? [pid 1518] +++ exited with 0 +++ [pid 1519] <... futex resumed>) = ? [pid 1519] +++ exited with 0 +++ [pid 1517] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1520 ./strace-static-x86_64: Process 1520 attached [pid 1520] set_robust_list(0x5555564465e0, 24) = 0 [pid 1520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1520] setpgid(0, 0) = 0 [pid 1520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1520] write(3, "1000", 4) = 4 [pid 1520] close(3) = 0 [pid 1520] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1520] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1520] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1521], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1521 [pid 1520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1521 attached [pid 1521] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1521] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1520] <... futex resumed>) = 0 [pid 1520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1521] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1520] <... futex resumed>) = 0 [pid 1520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1521] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1520] <... futex resumed>) = 0 [pid 1520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1520] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1520] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1521] umount2("./file0", MNT_DETACH [pid 1520] <... clone resumed>, parent_tid=[1522], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1522 [pid 1520] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1520] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1521] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1522 attached [pid 1522] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1522] umount2("./file0", MNT_DETACH [pid 1521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1522] <... umount2 resumed>) = 0 [pid 1522] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1520] <... futex resumed>) = 0 [pid 1520] exit_group(0) = ? [pid 1522] <... futex resumed>) = ? [pid 1522] +++ exited with 0 +++ [pid 1521] <... futex resumed>) = ? [pid 1521] +++ exited with 0 +++ [pid 1520] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1523 ./strace-static-x86_64: Process 1523 attached [pid 1523] set_robust_list(0x5555564465e0, 24) = 0 [pid 1523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1523] setpgid(0, 0) = 0 [pid 1523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1523] write(3, "1000", 4) = 4 [pid 1523] close(3) = 0 [pid 1523] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1523] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1523] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1524 attached , parent_tid=[1524], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1524 [pid 1523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1524] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1524] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1523] <... futex resumed>) = 0 [pid 1523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1524] <... futex resumed>) = 0 [pid 1524] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1524] <... mount resumed>) = 0 [pid 1524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1523] <... futex resumed>) = 0 [pid 1523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1524] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1523] <... futex resumed>) = 0 [pid 1523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1523] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1523] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1524] umount2("./file0", MNT_DETACH [pid 1523] <... mprotect resumed>) = 0 [pid 1523] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1525], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1525 [pid 1523] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1523] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1525 attached [pid 1525] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1525] umount2("./file0", MNT_DETACH) = 0 [pid 1525] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1523] <... futex resumed>) = 0 [pid 1525] <... futex resumed>) = 1 [pid 1524] <... umount2 resumed>) = 0 [pid 1525] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1523] exit_group(0) = ? [pid 1524] <... futex resumed>) = ? [pid 1525] <... futex resumed>) = ? [pid 1525] +++ exited with 0 +++ [pid 1524] +++ exited with 0 +++ [pid 1523] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1523, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1526 ./strace-static-x86_64: Process 1526 attached [pid 1526] set_robust_list(0x5555564465e0, 24) = 0 [pid 1526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1526] setpgid(0, 0) = 0 [pid 1526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1526] write(3, "1000", 4) = 4 [pid 1526] close(3) = 0 [pid 1526] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1526] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1526] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1527 attached , parent_tid=[1527], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1527 [pid 1526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1527] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1527] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1526] <... futex resumed>) = 0 [pid 1526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1527] <... futex resumed>) = 0 [pid 1527] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1527] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1526] <... futex resumed>) = 0 [pid 1526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1526] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1526] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1526] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1527] umount2("./file0", MNT_DETACH [pid 1526] <... clone resumed>, parent_tid=[1528], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1528 [pid 1526] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1527] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1528 attached [pid 1528] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1528] umount2("./file0", MNT_DETACH [pid 1526] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1528] <... umount2 resumed>) = 0 [pid 1527] <... futex resumed>) = 0 [pid 1528] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1526] <... futex resumed>) = 0 [pid 1528] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1526] exit_group(0) = ? [pid 1528] <... futex resumed>) = ? [pid 1528] +++ exited with 0 +++ [pid 1527] +++ exited with 0 +++ [pid 1526] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1526, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1529 attached , child_tidptr=0x5555564465d0) = 1529 [pid 1529] set_robust_list(0x5555564465e0, 24) = 0 [pid 1529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1529] setpgid(0, 0) = 0 [pid 1529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1529] write(3, "1000", 4) = 4 [pid 1529] close(3) = 0 [pid 1529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1529] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1529] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1530], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1530 [pid 1529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1530 attached [pid 1530] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1530] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1529] <... futex resumed>) = 0 [pid 1529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1530] <... futex resumed>) = 1 [pid 1530] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1529] <... futex resumed>) = 0 [pid 1529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1530] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1529] <... futex resumed>) = 0 [pid 1529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1530] umount2("./file0", MNT_DETACH [pid 1529] <... futex resumed>) = 0 [pid 1529] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1529] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1529] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1531], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1531 [pid 1529] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1529] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1531 attached [pid 1531] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1531] umount2("./file0", MNT_DETACH) = 0 [pid 1531] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1529] <... futex resumed>) = 0 [pid 1530] <... umount2 resumed>) = 0 [pid 1531] <... futex resumed>) = 1 [pid 1531] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1530] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1529] exit_group(0) = ? [pid 1531] <... futex resumed>) = ? [pid 1531] +++ exited with 0 +++ [pid 1530] <... futex resumed>) = ? [pid 1530] +++ exited with 0 +++ [pid 1529] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1529, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1532 attached , child_tidptr=0x5555564465d0) = 1532 [pid 1532] set_robust_list(0x5555564465e0, 24) = 0 [pid 1532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1532] setpgid(0, 0) = 0 [pid 1532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1532] write(3, "1000", 4) = 4 [pid 1532] close(3) = 0 [pid 1532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1532] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1532] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1533 attached , parent_tid=[1533], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1533 [pid 1533] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1533] <... futex resumed>) = 0 [pid 1533] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1532] <... futex resumed>) = 0 [pid 1532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1533] <... futex resumed>) = 0 [pid 1533] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1533] <... mount resumed>) = 0 [pid 1533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1532] <... futex resumed>) = 0 [pid 1532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1533] <... futex resumed>) = 0 [pid 1533] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1533] <... mount resumed>) = 0 [pid 1533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1532] <... futex resumed>) = 0 [pid 1532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1532] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1532] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1532] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1533] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 1534 attached [pid 1532] <... clone resumed>, parent_tid=[1534], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1534 [pid 1534] set_robust_list(0x7fc84e07e9e0, 24 [pid 1532] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1534] <... set_robust_list resumed>) = 0 [pid 1532] <... futex resumed>) = 0 [pid 1534] umount2("./file0", MNT_DETACH [pid 1532] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1534] <... umount2 resumed>) = 0 [pid 1533] umount2("./file0", MNT_DETACH [pid 1534] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1533] <... umount2 resumed>) = 0 [pid 1532] <... futex resumed>) = 0 [pid 1533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1534] <... futex resumed>) = 1 [pid 1534] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1532] exit_group(0) = ? [pid 1533] <... futex resumed>) = ? [pid 1534] <... futex resumed>) = ? [pid 1533] +++ exited with 0 +++ [pid 1534] +++ exited with 0 +++ [pid 1532] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1532, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1535 ./strace-static-x86_64: Process 1535 attached [pid 1535] set_robust_list(0x5555564465e0, 24) = 0 [pid 1535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1535] setpgid(0, 0) = 0 [pid 1535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1535] write(3, "1000", 4) = 4 [pid 1535] close(3) = 0 [pid 1535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1535] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1535] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1536 attached , parent_tid=[1536], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1536 [pid 1535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1536] set_robust_list(0x7fc84e09f9e0, 24 [pid 1535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1536] <... set_robust_list resumed>) = 0 [pid 1536] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1535] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1536] <... futex resumed>) = 0 [pid 1536] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1536] <... mount resumed>) = 0 [pid 1536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1535] <... futex resumed>) = 0 [pid 1535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1536] <... futex resumed>) = 0 [pid 1536] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1535] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1536] <... futex resumed>) = 0 [pid 1536] umount2("./file0", MNT_DETACH) = 0 [pid 1535] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1535] <... futex resumed>) = 0 [pid 1535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1535] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1535] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1537 attached , parent_tid=[1537], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1537 [pid 1537] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1537] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1535] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1537] <... futex resumed>) = 0 [pid 1537] umount2("./file0", MNT_DETACH) = 0 [pid 1537] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1537] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1535] <... futex resumed>) = 1 [pid 1535] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1535] exit_group(0 [pid 1536] <... futex resumed>) = ? [pid 1535] <... exit_group resumed>) = ? [pid 1536] +++ exited with 0 +++ [pid 1537] <... futex resumed>) = ? [pid 1537] +++ exited with 0 +++ [pid 1535] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1535, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1538 ./strace-static-x86_64: Process 1538 attached [pid 1538] set_robust_list(0x5555564465e0, 24) = 0 [pid 1538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1538] setpgid(0, 0) = 0 [pid 1538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1538] write(3, "1000", 4) = 4 [pid 1538] close(3) = 0 [pid 1538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1538] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1538] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1539 attached , parent_tid=[1539], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1539 [pid 1539] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1539] <... futex resumed>) = 0 [pid 1538] <... futex resumed>) = 1 [pid 1539] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1538] <... futex resumed>) = 0 [pid 1538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1539] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1538] <... futex resumed>) = 0 [pid 1538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1539] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1538] <... futex resumed>) = 0 [pid 1538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1538] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1538] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1538] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1539] umount2("./file0", MNT_DETACH [pid 1538] <... clone resumed>, parent_tid=[1540], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1540 [pid 1538] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1538] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1540 attached [pid 1540] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1540] umount2("./file0", MNT_DETACH [pid 1539] <... umount2 resumed>) = 0 [pid 1540] <... umount2 resumed>) = 0 [pid 1540] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1538] <... futex resumed>) = 0 [pid 1540] <... futex resumed>) = 1 [pid 1540] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1538] exit_group(0) = ? [pid 1540] <... futex resumed>) = ? [pid 1540] +++ exited with 0 +++ [pid 1539] <... futex resumed>) = ? [pid 1539] +++ exited with 0 +++ [pid 1538] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1538, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1541 ./strace-static-x86_64: Process 1541 attached [pid 1541] set_robust_list(0x5555564465e0, 24) = 0 [pid 1541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1541] setpgid(0, 0) = 0 [pid 1541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1541] write(3, "1000", 4) = 4 [pid 1541] close(3) = 0 [pid 1541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1541] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1541] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1542], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1542 ./strace-static-x86_64: Process 1542 attached [pid 1542] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1542] <... futex resumed>) = 0 [pid 1542] mkdir("./file0", 000 [pid 1541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1542] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1541] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1542] <... futex resumed>) = 0 [pid 1542] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1542] <... mount resumed>) = 0 [pid 1542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1541] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1542] <... futex resumed>) = 0 [pid 1541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1542] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1541] <... futex resumed>) = 0 [pid 1541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1542] <... futex resumed>) = 0 [pid 1542] umount2("./file0", MNT_DETACH [pid 1541] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1542] <... umount2 resumed>) = 0 [pid 1542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1541] <... mmap resumed>) = 0x7fc84e05e000 [pid 1541] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1541] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1543 attached , parent_tid=[1543], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1543 [pid 1543] set_robust_list(0x7fc84e07e9e0, 24 [pid 1541] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1543] <... set_robust_list resumed>) = 0 [pid 1543] umount2("./file0", MNT_DETACH [pid 1541] <... futex resumed>) = 0 [pid 1543] <... umount2 resumed>) = 0 [pid 1541] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1543] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1543] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1541] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1541] exit_group(0) = ? [pid 1542] <... futex resumed>) = ? [pid 1542] +++ exited with 0 +++ [pid 1543] <... futex resumed>) = ? [pid 1543] +++ exited with 0 +++ [pid 1541] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1541, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1545 attached , child_tidptr=0x5555564465d0) = 1545 [pid 1545] set_robust_list(0x5555564465e0, 24) = 0 [pid 1545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1545] setpgid(0, 0) = 0 [pid 1545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1545] write(3, "1000", 4) = 4 [pid 1545] close(3) = 0 [pid 1545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1545] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1545] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1546], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1546 [pid 1545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1545] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1546 attached [pid 1546] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1546] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1545] <... futex resumed>) = 0 [pid 1545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1546] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1545] <... futex resumed>) = 0 [pid 1545] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1546] <... mount resumed>) = 0 [pid 1546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1545] <... futex resumed>) = 0 [pid 1545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1545] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1546] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1545] <... futex resumed>) = 0 [pid 1545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1545] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1545] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1545] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1547], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1547 [pid 1545] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1545] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1547 attached [pid 1547] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1547] umount2("./file0", MNT_DETACH [pid 1546] umount2("./file0", MNT_DETACH [pid 1547] <... umount2 resumed>) = 0 [pid 1547] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1545] <... futex resumed>) = 0 [pid 1546] <... umount2 resumed>) = 0 [pid 1547] <... futex resumed>) = 1 [pid 1547] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1546] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1545] exit_group(0) = ? [pid 1547] <... futex resumed>) = ? [pid 1547] +++ exited with 0 +++ [pid 1546] <... futex resumed>) = ? [pid 1546] +++ exited with 0 +++ [pid 1545] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1545, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1548 ./strace-static-x86_64: Process 1548 attached [pid 1548] set_robust_list(0x5555564465e0, 24) = 0 [pid 1548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1548] setpgid(0, 0) = 0 [pid 1548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1548] write(3, "1000", 4) = 4 [pid 1548] close(3) = 0 [pid 1548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1548] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1548] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1549], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1549 [pid 1548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1548] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1549 attached [pid 1549] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1549] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1548] <... futex resumed>) = 0 [pid 1548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1548] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1549] <... futex resumed>) = 1 [pid 1549] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1548] <... futex resumed>) = 0 [pid 1549] <... futex resumed>) = 1 [pid 1548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1549] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1548] <... futex resumed>) = 0 [pid 1548] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1549] <... mount resumed>) = 0 [pid 1549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1548] <... futex resumed>) = 0 [pid 1549] <... futex resumed>) = 1 [pid 1548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1549] umount2("./file0", MNT_DETACH [pid 1548] <... futex resumed>) = 0 [pid 1548] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1548] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1549] <... umount2 resumed>) = 0 [pid 1548] <... mprotect resumed>) = 0 [pid 1549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1548] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1549] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1550 attached [pid 1549] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1550] set_robust_list(0x7fc84e07e9e0, 24 [pid 1548] <... clone resumed>, parent_tid=[1550], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1550 [pid 1550] <... set_robust_list resumed>) = 0 [pid 1548] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1550] umount2("./file0", MNT_DETACH [pid 1548] <... futex resumed>) = 0 [pid 1548] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1550] <... umount2 resumed>) = 0 [pid 1550] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1548] <... futex resumed>) = 0 [pid 1550] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1548] exit_group(0) = ? [pid 1549] <... futex resumed>) = ? [pid 1549] +++ exited with 0 +++ [pid 1550] <... futex resumed>) = ? [pid 1550] +++ exited with 0 +++ [pid 1548] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1548, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1551 attached , child_tidptr=0x5555564465d0) = 1551 [pid 1551] set_robust_list(0x5555564465e0, 24) = 0 [pid 1551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1551] setpgid(0, 0) = 0 [pid 1551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1551] write(3, "1000", 4) = 4 [pid 1551] close(3) = 0 [pid 1551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1551] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1551] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1551] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1552], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1552 [pid 1551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1551] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1552 attached [pid 1552] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1552] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1551] <... futex resumed>) = 0 [pid 1551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1551] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1552] <... futex resumed>) = 1 [pid 1552] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1551] <... futex resumed>) = 0 [pid 1552] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1552] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1551] <... futex resumed>) = 0 [pid 1552] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1551] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1552] <... mount resumed>) = 0 [pid 1552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1551] <... futex resumed>) = 0 [pid 1551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1551] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1551] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1551] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1551] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1552] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1553 attached [pid 1551] <... clone resumed>, parent_tid=[1553], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1553 [pid 1551] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1551] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1553] set_robust_list(0x7fc84e07e9e0, 24 [pid 1552] <... umount2 resumed>) = 0 [pid 1553] <... set_robust_list resumed>) = 0 [pid 1553] umount2("./file0", MNT_DETACH [pid 1552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1552] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1553] <... umount2 resumed>) = 0 [pid 1553] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1551] <... futex resumed>) = 0 [pid 1551] exit_group(0) = ? [pid 1552] <... futex resumed>) = ? [pid 1552] +++ exited with 0 +++ [pid 1553] <... futex resumed>) = ? [pid 1553] +++ exited with 0 +++ [pid 1551] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1551, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1554 attached , child_tidptr=0x5555564465d0) = 1554 [pid 1554] set_robust_list(0x5555564465e0, 24) = 0 [pid 1554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1554] setpgid(0, 0) = 0 [pid 1554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1554] write(3, "1000", 4) = 4 [pid 1554] close(3) = 0 [pid 1554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1554] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1554] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1555], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1555 [pid 1554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1554] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1555 attached [pid 1555] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1555] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1554] <... futex resumed>) = 0 [pid 1554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1554] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1555] <... futex resumed>) = 1 [pid 1555] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1554] <... futex resumed>) = 0 [pid 1554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1554] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1555] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1554] <... futex resumed>) = 0 [pid 1555] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1554] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1554] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1554] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1555] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 1556 attached [pid 1556] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1556] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1555] umount2("./file0", MNT_DETACH [pid 1554] <... clone resumed>, parent_tid=[1556], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1556 [pid 1554] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1554] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1556] <... futex resumed>) = 0 [pid 1556] umount2("./file0", MNT_DETACH [pid 1555] <... umount2 resumed>) = 0 [pid 1556] <... umount2 resumed>) = 0 [pid 1555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1556] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1554] <... futex resumed>) = 0 [pid 1556] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1554] exit_group(0) = ? [pid 1556] <... futex resumed>) = ? [pid 1556] +++ exited with 0 +++ [pid 1555] <... futex resumed>) = ? [pid 1555] +++ exited with 0 +++ [pid 1554] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1554, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1557 attached , child_tidptr=0x5555564465d0) = 1557 [pid 1557] set_robust_list(0x5555564465e0, 24) = 0 [pid 1557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1557] setpgid(0, 0) = 0 [pid 1557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1557] write(3, "1000", 4) = 4 [pid 1557] close(3) = 0 [pid 1557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1557] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1557] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1557] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1558 attached [pid 1558] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1557] <... clone resumed>, parent_tid=[1558], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1558 [pid 1558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1558] <... futex resumed>) = 0 [pid 1558] mkdir("./file0", 000 [pid 1557] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1558] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1557] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1558] <... futex resumed>) = 0 [pid 1557] <... futex resumed>) = 1 [pid 1558] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1557] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1558] <... mount resumed>) = 0 [pid 1558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1557] <... futex resumed>) = 0 [pid 1557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1558] <... futex resumed>) = 0 [pid 1557] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1558] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1557] <... futex resumed>) = 0 [pid 1558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1557] <... futex resumed>) = 0 [pid 1558] umount2("./file0", MNT_DETACH [pid 1557] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1558] <... umount2 resumed>) = 0 [pid 1557] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1557] <... mmap resumed>) = 0x7fc84e05e000 [pid 1558] <... futex resumed>) = 0 [pid 1557] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1557] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1559 attached , parent_tid=[1559], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1559 [pid 1559] set_robust_list(0x7fc84e07e9e0, 24 [pid 1557] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1559] <... set_robust_list resumed>) = 0 [pid 1557] <... futex resumed>) = 0 [pid 1559] umount2("./file0", MNT_DETACH [pid 1557] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1559] <... umount2 resumed>) = 0 [pid 1559] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1557] <... futex resumed>) = 0 [pid 1559] <... futex resumed>) = 1 [pid 1557] exit_group(0 [pid 1559] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1557] <... exit_group resumed>) = ? [pid 1558] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1559] <... futex resumed>) = ? [pid 1558] +++ exited with 0 +++ [pid 1559] +++ exited with 0 +++ [pid 1557] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1557, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1560 ./strace-static-x86_64: Process 1560 attached [pid 1560] set_robust_list(0x5555564465e0, 24) = 0 [pid 1560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1560] setpgid(0, 0) = 0 [pid 1560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1560] write(3, "1000", 4) = 4 [pid 1560] close(3) = 0 [pid 1560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1560] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1560] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1561 attached , parent_tid=[1561], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1561 [pid 1561] set_robust_list(0x7fc84e09f9e0, 24 [pid 1560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1561] <... set_robust_list resumed>) = 0 [pid 1560] <... futex resumed>) = 0 [pid 1561] mkdir("./file0", 000 [pid 1560] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1561] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1560] <... futex resumed>) = 0 [pid 1560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1560] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1561] <... futex resumed>) = 1 [pid 1561] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1560] <... futex resumed>) = 0 [pid 1560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1560] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1561] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1560] <... futex resumed>) = 0 [pid 1560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1560] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1560] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1560] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1562], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1562 [pid 1560] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1560] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1562 attached [pid 1562] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1562] umount2("./file0", MNT_DETACH [pid 1561] umount2("./file0", MNT_DETACH [pid 1562] <... umount2 resumed>) = 0 [pid 1562] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1560] <... futex resumed>) = 0 [pid 1562] <... futex resumed>) = 1 [pid 1562] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1561] <... umount2 resumed>) = 0 [pid 1561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1561] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1560] exit_group(0) = ? [pid 1562] <... futex resumed>) = ? [pid 1561] <... futex resumed>) = ? [pid 1562] +++ exited with 0 +++ [pid 1561] +++ exited with 0 +++ [pid 1560] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1560, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1563 ./strace-static-x86_64: Process 1563 attached [pid 1563] set_robust_list(0x5555564465e0, 24) = 0 [pid 1563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1563] setpgid(0, 0) = 0 [pid 1563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1563] write(3, "1000", 4) = 4 [pid 1563] close(3) = 0 [pid 1563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1563] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1563] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1563] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1564 attached , parent_tid=[1564], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1564 [pid 1564] set_robust_list(0x7fc84e09f9e0, 24 [pid 1563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1564] <... set_robust_list resumed>) = 0 [pid 1563] <... futex resumed>) = 0 [pid 1563] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1564] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1563] <... futex resumed>) = 0 [pid 1564] <... futex resumed>) = 1 [pid 1563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1564] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1563] <... futex resumed>) = 0 [pid 1563] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1564] <... mount resumed>) = 0 [pid 1564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1563] <... futex resumed>) = 0 [pid 1564] <... futex resumed>) = 1 [pid 1563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1564] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1563] <... futex resumed>) = 0 [pid 1563] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1564] <... mount resumed>) = 0 [pid 1564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1563] <... futex resumed>) = 0 [pid 1563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1563] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1563] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1563] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1563] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1565 attached [pid 1564] umount2("./file0", MNT_DETACH [pid 1563] <... clone resumed>, parent_tid=[1565], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1565 [pid 1563] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1563] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1565] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1565] umount2("./file0", MNT_DETACH [pid 1564] <... umount2 resumed>) = 0 [pid 1565] <... umount2 resumed>) = 0 [pid 1564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1564] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1565] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1563] <... futex resumed>) = 0 [pid 1563] exit_group(0 [pid 1564] <... futex resumed>) = ? [pid 1563] <... exit_group resumed>) = ? [pid 1564] +++ exited with 0 +++ [pid 1565] <... futex resumed>) = ? [pid 1565] +++ exited with 0 +++ [pid 1563] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1563, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1566 ./strace-static-x86_64: Process 1566 attached [pid 1566] set_robust_list(0x5555564465e0, 24) = 0 [pid 1566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1566] setpgid(0, 0) = 0 [pid 1566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1566] write(3, "1000", 4) = 4 [pid 1566] close(3) = 0 [pid 1566] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1566] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1566] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1567 attached , parent_tid=[1567], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1567 [pid 1567] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1567] <... futex resumed>) = 0 [pid 1566] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1567] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1566] <... futex resumed>) = 0 [pid 1566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1567] <... futex resumed>) = 0 [pid 1567] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1566] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1567] <... mount resumed>) = 0 [pid 1567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1566] <... futex resumed>) = 0 [pid 1566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1566] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1567] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1566] <... futex resumed>) = 0 [pid 1566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1566] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1566] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1566] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1567] umount2("./file0", MNT_DETACH [pid 1566] <... clone resumed>, parent_tid=[1568], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1568 [pid 1566] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1566] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1568 attached [pid 1568] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1568] umount2("./file0", MNT_DETACH) = 0 [pid 1568] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1566] <... futex resumed>) = 0 [pid 1568] <... futex resumed>) = 1 [pid 1568] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1567] <... umount2 resumed>) = 0 [pid 1567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1566] exit_group(0) = ? [pid 1567] <... futex resumed>) = ? [pid 1567] +++ exited with 0 +++ [pid 1568] <... futex resumed>) = ? [pid 1568] +++ exited with 0 +++ [pid 1566] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1566, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1569 ./strace-static-x86_64: Process 1569 attached [pid 1569] set_robust_list(0x5555564465e0, 24) = 0 [pid 1569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1569] setpgid(0, 0) = 0 [pid 1569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1569] write(3, "1000", 4) = 4 [pid 1569] close(3) = 0 [pid 1569] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1569] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1569] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1569] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1570 attached [pid 1570] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1569] <... clone resumed>, parent_tid=[1570], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1570 [pid 1569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1570] <... futex resumed>) = 0 [pid 1570] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1569] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1570] <... futex resumed>) = 0 [pid 1570] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1569] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1570] <... mount resumed>) = 0 [pid 1570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1569] <... futex resumed>) = 0 [pid 1570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1569] <... futex resumed>) = 0 [pid 1570] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1569] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1570] <... mount resumed>) = 0 [pid 1570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1569] <... futex resumed>) = 0 [pid 1569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1569] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1569] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1569] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1570] umount2("./file0", MNT_DETACH [pid 1569] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1571 attached , parent_tid=[1571], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1571 [pid 1570] <... umount2 resumed>) = 0 [pid 1569] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1569] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1571] set_robust_list(0x7fc84e07e9e0, 24 [pid 1570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1571] <... set_robust_list resumed>) = 0 [pid 1570] <... futex resumed>) = 0 [pid 1571] umount2("./file0", MNT_DETACH [pid 1570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1571] <... umount2 resumed>) = 0 [pid 1571] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1569] <... futex resumed>) = 0 [pid 1571] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1569] exit_group(0 [pid 1570] <... futex resumed>) = ? [pid 1570] +++ exited with 0 +++ [pid 1569] <... exit_group resumed>) = ? [pid 1571] <... futex resumed>) = ? [pid 1571] +++ exited with 0 +++ [pid 1569] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1569, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1572 ./strace-static-x86_64: Process 1572 attached [pid 1572] set_robust_list(0x5555564465e0, 24) = 0 [pid 1572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1572] setpgid(0, 0) = 0 [pid 1572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1572] write(3, "1000", 4) = 4 [pid 1572] close(3) = 0 [pid 1572] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1572] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1572] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1573 attached , parent_tid=[1573], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1573 [pid 1572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1572] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1573] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1573] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1573] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1572] <... futex resumed>) = 0 [pid 1572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1573] <... futex resumed>) = 0 [pid 1572] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1573] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1572] <... futex resumed>) = 0 [pid 1572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1572] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1573] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1572] <... futex resumed>) = 0 [pid 1572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1572] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1572] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1572] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1574], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1574 [pid 1572] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1573] umount2("./file0", MNT_DETACH [pid 1572] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1574 attached [pid 1572] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1574] set_robust_list(0x7fc84e07e9e0, 24 [pid 1573] <... umount2 resumed>) = 0 [pid 1573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1573] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1574] <... set_robust_list resumed>) = 0 [pid 1574] umount2("./file0", MNT_DETACH) = 0 [pid 1574] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1572] <... futex resumed>) = 0 [pid 1572] exit_group(0 [pid 1573] <... futex resumed>) = ? [pid 1572] <... exit_group resumed>) = ? [pid 1573] +++ exited with 0 +++ [pid 1574] +++ exited with 0 +++ [pid 1572] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1572, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1575 attached , child_tidptr=0x5555564465d0) = 1575 [pid 1575] set_robust_list(0x5555564465e0, 24) = 0 [pid 1575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1575] setpgid(0, 0) = 0 [pid 1575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1575] write(3, "1000", 4) = 4 [pid 1575] close(3) = 0 [pid 1575] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1575] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1575] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1576], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1576 [pid 1575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1576 attached [pid 1576] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1576] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1575] <... futex resumed>) = 0 [pid 1575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1576] <... futex resumed>) = 1 [pid 1576] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1575] <... futex resumed>) = 0 [pid 1575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1576] <... futex resumed>) = 1 [pid 1576] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1575] <... futex resumed>) = 0 [pid 1575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1575] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1575] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1577], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1577 [pid 1575] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1575] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1576] <... futex resumed>) = 1 [pid 1576] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1577 attached ) = 0 [pid 1577] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1577] umount2("./file0", MNT_DETACH [pid 1576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1577] <... umount2 resumed>) = 0 [pid 1576] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1577] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1575] <... futex resumed>) = 0 [pid 1575] exit_group(0) = ? [pid 1576] <... futex resumed>) = 231 [pid 1577] <... futex resumed>) = ? [pid 1577] +++ exited with 0 +++ [pid 1576] +++ exited with 0 +++ [pid 1575] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1575, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1578 ./strace-static-x86_64: Process 1578 attached [pid 1578] set_robust_list(0x5555564465e0, 24) = 0 [pid 1578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1578] setpgid(0, 0) = 0 [pid 1578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1578] write(3, "1000", 4) = 4 [pid 1578] close(3) = 0 [pid 1578] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1578] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1578] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1579 attached , parent_tid=[1579], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1579 [pid 1578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1579] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1579] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1578] <... futex resumed>) = 0 [pid 1578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1579] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1578] <... futex resumed>) = 0 [pid 1578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1579] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1578] <... futex resumed>) = 0 [pid 1578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1578] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1579] umount2("./file0", MNT_DETACH [pid 1578] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1579] <... umount2 resumed>) = 0 [pid 1578] <... clone resumed>, parent_tid=[1580], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1580 [pid 1578] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1578] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1580 attached [pid 1580] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1580] umount2("./file0", MNT_DETACH [pid 1579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1580] <... umount2 resumed>) = 0 [pid 1579] <... futex resumed>) = 0 [pid 1580] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1578] <... futex resumed>) = 0 [pid 1578] exit_group(0 [pid 1579] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1578] <... exit_group resumed>) = ? [pid 1580] <... futex resumed>) = ? [pid 1580] +++ exited with 0 +++ [pid 1579] <... futex resumed>) = ? [pid 1579] +++ exited with 0 +++ [pid 1578] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1578, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1581 ./strace-static-x86_64: Process 1581 attached [pid 1581] set_robust_list(0x5555564465e0, 24) = 0 [pid 1581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1581] setpgid(0, 0) = 0 [pid 1581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1581] write(3, "1000", 4) = 4 [pid 1581] close(3) = 0 [pid 1581] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1581] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1581] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1582], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1582 [pid 1581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1582 attached [pid 1582] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1582] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1581] <... futex resumed>) = 0 [pid 1581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1582] <... futex resumed>) = 1 [pid 1582] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1581] <... futex resumed>) = 0 [pid 1581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1582] <... futex resumed>) = 1 [pid 1582] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1581] <... futex resumed>) = 0 [pid 1581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1581] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1581] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1583], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1583 [pid 1581] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1581] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1582] <... futex resumed>) = 1 [pid 1582] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1583 attached ) = 0 [pid 1583] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1583] umount2("./file0", MNT_DETACH [pid 1582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1583] <... umount2 resumed>) = 0 [pid 1582] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1583] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1581] <... futex resumed>) = 0 [pid 1583] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1581] exit_group(0) = ? [pid 1582] <... futex resumed>) = ? [pid 1583] <... futex resumed>) = ? [pid 1583] +++ exited with 0 +++ [pid 1582] +++ exited with 0 +++ [pid 1581] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1581, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1584 attached , child_tidptr=0x5555564465d0) = 1584 [pid 1584] set_robust_list(0x5555564465e0, 24) = 0 [pid 1584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1584] setpgid(0, 0) = 0 [pid 1584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1584] write(3, "1000", 4) = 4 [pid 1584] close(3) = 0 [pid 1584] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1584] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1584] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1585], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1585 [pid 1584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1584] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1585 attached [pid 1585] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1585] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1584] <... futex resumed>) = 0 [pid 1584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1584] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1585] <... futex resumed>) = 1 [pid 1585] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1584] <... futex resumed>) = 0 [pid 1584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1584] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1585] <... futex resumed>) = 1 [pid 1585] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1584] <... futex resumed>) = 0 [pid 1585] <... futex resumed>) = 1 [pid 1584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1585] umount2("./file0", MNT_DETACH [pid 1584] <... futex resumed>) = 0 [pid 1584] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1584] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1585] <... umount2 resumed>) = 0 [pid 1584] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1586 attached [pid 1585] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1584] <... clone resumed>, parent_tid=[1586], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1586 [pid 1586] set_robust_list(0x7fc84e07e9e0, 24 [pid 1584] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1586] <... set_robust_list resumed>) = 0 [pid 1584] <... futex resumed>) = 0 [pid 1586] umount2("./file0", MNT_DETACH [pid 1584] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1586] <... umount2 resumed>) = 0 [pid 1586] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1584] <... futex resumed>) = 0 [pid 1584] exit_group(0) = ? [pid 1585] <... futex resumed>) = ? [pid 1585] +++ exited with 0 +++ [pid 1586] <... futex resumed>) = ? [pid 1586] +++ exited with 0 +++ [pid 1584] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1584, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1587 attached , child_tidptr=0x5555564465d0) = 1587 [pid 1587] set_robust_list(0x5555564465e0, 24) = 0 [pid 1587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1587] setpgid(0, 0) = 0 [pid 1587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1587] write(3, "1000", 4) = 4 [pid 1587] close(3) = 0 [pid 1587] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1587] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1587] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1588], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1588 [pid 1587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1587] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1588 attached [pid 1588] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1588] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1587] <... futex resumed>) = 0 [pid 1587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1587] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1588] <... futex resumed>) = 1 [pid 1588] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1587] <... futex resumed>) = 0 [pid 1588] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1588] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1587] <... futex resumed>) = 0 [pid 1588] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1587] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1588] <... mount resumed>) = 0 [pid 1588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1587] <... futex resumed>) = 0 [pid 1588] umount2("./file0", MNT_DETACH [pid 1587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1587] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1587] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1587] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1589], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1589 [pid 1587] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1587] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1589 attached [pid 1589] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1589] umount2("./file0", MNT_DETACH [pid 1588] <... umount2 resumed>) = 0 [pid 1589] <... umount2 resumed>) = 0 [pid 1588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1589] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1588] <... futex resumed>) = 0 [pid 1589] <... futex resumed>) = 1 [pid 1588] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1587] <... futex resumed>) = 0 [pid 1587] exit_group(0) = ? [pid 1588] <... futex resumed>) = ? [pid 1589] +++ exited with 0 +++ [pid 1588] +++ exited with 0 +++ [pid 1587] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1587, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1590 ./strace-static-x86_64: Process 1590 attached [pid 1590] set_robust_list(0x5555564465e0, 24) = 0 [pid 1590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1590] setpgid(0, 0) = 0 [pid 1590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1590] write(3, "1000", 4) = 4 [pid 1590] close(3) = 0 [pid 1590] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1590] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1590] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1591 attached [pid 1591] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1591] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1590] <... clone resumed>, parent_tid=[1591], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1591 [pid 1590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1591] <... futex resumed>) = 0 [pid 1591] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1591] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1590] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1591] <... futex resumed>) = 0 [pid 1591] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1590] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1591] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1591] <... futex resumed>) = 0 [pid 1591] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1590] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1591] <... mount resumed>) = 0 [pid 1591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1591] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1590] <... futex resumed>) = 0 [pid 1590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1591] <... futex resumed>) = 0 [pid 1590] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1591] umount2("./file0", MNT_DETACH [pid 1590] <... futex resumed>) = 0 [pid 1590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1591] <... umount2 resumed>) = 0 [pid 1590] <... mmap resumed>) = 0x7fc84e05e000 [pid 1591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1591] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1590] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1590] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1592 attached , parent_tid=[1592], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1592 [pid 1592] set_robust_list(0x7fc84e07e9e0, 24 [pid 1590] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1592] <... set_robust_list resumed>) = 0 [pid 1592] umount2("./file0", MNT_DETACH [pid 1590] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1592] <... umount2 resumed>) = 0 [pid 1592] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1592] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1590] exit_group(0 [pid 1591] <... futex resumed>) = ? [pid 1590] <... exit_group resumed>) = ? [pid 1591] +++ exited with 0 +++ [pid 1592] <... futex resumed>) = ? [pid 1592] +++ exited with 0 +++ [pid 1590] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1590, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1593 ./strace-static-x86_64: Process 1593 attached [pid 1593] set_robust_list(0x5555564465e0, 24) = 0 [pid 1593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1593] setpgid(0, 0) = 0 [pid 1593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1593] write(3, "1000", 4) = 4 [pid 1593] close(3) = 0 [pid 1593] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1593] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1593] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1594 attached , parent_tid=[1594], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1594 [pid 1594] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1594] <... futex resumed>) = 0 [pid 1594] mkdir("./file0", 000 [pid 1593] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1594] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1593] <... futex resumed>) = 0 [pid 1593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1594] <... futex resumed>) = 0 [pid 1594] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1593] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1594] <... mount resumed>) = 0 [pid 1594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1593] <... futex resumed>) = 0 [pid 1593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1593] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1594] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1593] <... futex resumed>) = 0 [pid 1593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1593] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1593] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1593] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1595], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1595 [pid 1594] umount2("./file0", MNT_DETACH [pid 1593] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1593] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1595 attached [pid 1595] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1595] umount2("./file0", MNT_DETACH) = 0 [pid 1595] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1593] <... futex resumed>) = 0 [pid 1594] <... umount2 resumed>) = 0 [pid 1595] <... futex resumed>) = 1 [pid 1595] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1593] exit_group(0) = ? [pid 1595] <... futex resumed>) = ? [pid 1594] <... futex resumed>) = ? [pid 1595] +++ exited with 0 +++ [pid 1594] +++ exited with 0 +++ [pid 1593] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1593, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1596 attached , child_tidptr=0x5555564465d0) = 1596 [pid 1596] set_robust_list(0x5555564465e0, 24) = 0 [pid 1596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1596] setpgid(0, 0) = 0 [pid 1596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1596] write(3, "1000", 4) = 4 [pid 1596] close(3) = 0 [pid 1596] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1596] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1596] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1597], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1597 ./strace-static-x86_64: Process 1597 attached [pid 1597] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1597] <... futex resumed>) = 0 [pid 1597] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1596] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1597] <... futex resumed>) = 0 [pid 1596] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1597] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1596] <... futex resumed>) = 0 [pid 1596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1597] <... futex resumed>) = 0 [pid 1596] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1597] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1596] <... futex resumed>) = 0 [pid 1596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1596] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1596] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1596] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1598], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1598 [pid 1597] umount2("./file0", MNT_DETACH [pid 1596] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1596] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1598 attached [pid 1598] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1598] umount2("./file0", MNT_DETACH) = 0 [pid 1598] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1596] <... futex resumed>) = 0 [pid 1597] <... umount2 resumed>) = 0 [pid 1598] <... futex resumed>) = 1 [pid 1598] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1596] exit_group(0) = ? [pid 1598] <... futex resumed>) = ? [pid 1598] +++ exited with 0 +++ [pid 1597] <... futex resumed>) = ? [pid 1597] +++ exited with 0 +++ [pid 1596] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1596, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1599 ./strace-static-x86_64: Process 1599 attached [pid 1599] set_robust_list(0x5555564465e0, 24) = 0 [pid 1599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1599] setpgid(0, 0) = 0 [pid 1599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1599] write(3, "1000", 4) = 4 [pid 1599] close(3) = 0 [pid 1599] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1599] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1599] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1600 attached , parent_tid=[1600], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1600 [pid 1599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1600] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1600] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1599] <... futex resumed>) = 0 [pid 1599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1600] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1599] <... futex resumed>) = 0 [pid 1599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1600] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1599] <... futex resumed>) = 0 [pid 1600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1599] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1599] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1601], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1601 [pid 1599] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1599] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1601 attached [pid 1601] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1601] umount2("./file0", MNT_DETACH [pid 1600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1600] umount2("./file0", MNT_DETACH [pid 1601] <... umount2 resumed>) = 0 [pid 1601] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1599] <... futex resumed>) = 0 [pid 1601] <... futex resumed>) = 1 [pid 1601] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1600] <... umount2 resumed>) = 0 [pid 1600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1599] exit_group(0) = ? [pid 1600] <... futex resumed>) = ? [pid 1601] <... futex resumed>) = ? [pid 1601] +++ exited with 0 +++ [pid 1600] +++ exited with 0 +++ [pid 1599] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1599, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1602 attached , child_tidptr=0x5555564465d0) = 1602 [pid 1602] set_robust_list(0x5555564465e0, 24) = 0 [pid 1602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1602] setpgid(0, 0) = 0 [pid 1602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1602] write(3, "1000", 4) = 4 [pid 1602] close(3) = 0 [pid 1602] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1602] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1602] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1603 attached , parent_tid=[1603], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1603 [pid 1602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1603] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1603] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1602] <... futex resumed>) = 0 [pid 1602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1603] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1602] <... futex resumed>) = 0 [pid 1602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1603] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1602] <... futex resumed>) = 0 [pid 1602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1602] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1602] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1604], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1604 [pid 1603] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1602] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1602] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1604 attached [pid 1604] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1604] umount2("./file0", MNT_DETACH [pid 1603] umount2("./file0", MNT_DETACH) = 0 [pid 1603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1604] <... umount2 resumed>) = 0 [pid 1604] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1602] <... futex resumed>) = 0 [pid 1602] exit_group(0) = ? [pid 1603] <... futex resumed>) = ? [pid 1603] +++ exited with 0 +++ [pid 1604] +++ exited with 0 +++ [pid 1602] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1602, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1605 ./strace-static-x86_64: Process 1605 attached [pid 1605] set_robust_list(0x5555564465e0, 24) = 0 [pid 1605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1605] setpgid(0, 0) = 0 [pid 1605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1605] write(3, "1000", 4) = 4 [pid 1605] close(3) = 0 [pid 1605] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1605] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1605] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1606 attached , parent_tid=[1606], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1606 [pid 1606] set_robust_list(0x7fc84e09f9e0, 24 [pid 1605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1606] <... set_robust_list resumed>) = 0 [pid 1605] <... futex resumed>) = 0 [pid 1605] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1606] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1605] <... futex resumed>) = 0 [pid 1606] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1606] <... futex resumed>) = 0 [pid 1606] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1605] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1606] <... mount resumed>) = 0 [pid 1606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1605] <... futex resumed>) = 0 [pid 1606] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1605] <... futex resumed>) = 0 [pid 1606] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1605] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1606] <... mount resumed>) = 0 [pid 1606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1605] <... futex resumed>) = 0 [pid 1606] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1605] <... futex resumed>) = 0 [pid 1606] umount2("./file0", MNT_DETACH [pid 1605] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1606] <... umount2 resumed>) = 0 [pid 1605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1605] <... mmap resumed>) = 0x7fc84e05e000 [pid 1605] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1606] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1605] <... mprotect resumed>) = 0 [pid 1605] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1607 attached , parent_tid=[1607], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1607 [pid 1605] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1607] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1607] umount2("./file0", MNT_DETACH [pid 1605] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1607] <... umount2 resumed>) = 0 [pid 1607] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1605] <... futex resumed>) = 0 [pid 1605] exit_group(0) = ? [pid 1606] <... futex resumed>) = ? [pid 1607] +++ exited with 0 +++ [pid 1606] +++ exited with 0 +++ [pid 1605] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1605, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1608 ./strace-static-x86_64: Process 1608 attached [pid 1608] set_robust_list(0x5555564465e0, 24) = 0 [pid 1608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1608] setpgid(0, 0) = 0 [pid 1608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1608] write(3, "1000", 4) = 4 [pid 1608] close(3) = 0 [pid 1608] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1608] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1608] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1609], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1609 [pid 1608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1608] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1609 attached [pid 1609] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1609] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1608] <... futex resumed>) = 0 [pid 1609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1609] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1608] <... futex resumed>) = 0 [pid 1608] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1609] <... mount resumed>) = 0 [pid 1609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1608] <... futex resumed>) = 0 [pid 1608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1608] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1609] <... futex resumed>) = 1 [pid 1609] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1608] <... futex resumed>) = 0 [pid 1608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1608] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1609] <... futex resumed>) = 1 [pid 1608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1609] umount2("./file0", MNT_DETACH [pid 1608] <... mmap resumed>) = 0x7fc84e05e000 [pid 1608] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1609] <... umount2 resumed>) = 0 [pid 1608] <... mprotect resumed>) = 0 [pid 1608] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1610 attached [pid 1609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1608] <... clone resumed>, parent_tid=[1610], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1610 [pid 1608] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1608] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1610] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1610] umount2("./file0", MNT_DETACH [pid 1609] <... futex resumed>) = 0 [pid 1610] <... umount2 resumed>) = 0 [pid 1609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1610] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1608] <... futex resumed>) = 0 [pid 1608] exit_group(0) = ? [pid 1609] <... futex resumed>) = ? [pid 1610] <... futex resumed>) = ? [pid 1610] +++ exited with 0 +++ [pid 1609] +++ exited with 0 +++ [pid 1608] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1608, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1611 attached , child_tidptr=0x5555564465d0) = 1611 [pid 1611] set_robust_list(0x5555564465e0, 24) = 0 [pid 1611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1611] setpgid(0, 0) = 0 [pid 1611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1611] write(3, "1000", 4) = 4 [pid 1611] close(3) = 0 [pid 1611] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1611] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1611] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1612 attached , parent_tid=[1612], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1612 [pid 1612] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1612] <... futex resumed>) = 0 [pid 1612] mkdir("./file0", 000 [pid 1611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1612] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1612] <... futex resumed>) = 0 [pid 1612] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1612] <... futex resumed>) = 0 [pid 1612] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1612] <... mount resumed>) = 0 [pid 1612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1612] <... futex resumed>) = 0 [pid 1612] umount2("./file0", MNT_DETACH) = 0 [pid 1612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1612] <... futex resumed>) = 0 [pid 1611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1612] umount2("./file0", MNT_DETACH) = 0 [pid 1612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1611] exit_group(0) = ? [pid 1612] <... futex resumed>) = ? [pid 1612] +++ exited with 0 +++ [pid 1611] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1611, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1613 ./strace-static-x86_64: Process 1613 attached [pid 1613] set_robust_list(0x5555564465e0, 24) = 0 [pid 1613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1613] setpgid(0, 0) = 0 [pid 1613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1613] write(3, "1000", 4) = 4 [pid 1613] close(3) = 0 [pid 1613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1613] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1613] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1614], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1614 [pid 1613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1614 attached [pid 1613] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1614] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1614] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1613] <... futex resumed>) = 0 [pid 1613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1614] <... futex resumed>) = 1 [pid 1613] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1614] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1613] <... futex resumed>) = 0 [pid 1614] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1614] <... mount resumed>) = 0 [pid 1613] <... futex resumed>) = 0 [pid 1614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1613] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1614] <... futex resumed>) = 0 [pid 1613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1614] umount2("./file0", MNT_DETACH [pid 1613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1614] <... umount2 resumed>) = 0 [pid 1613] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1613] <... futex resumed>) = 0 [pid 1614] <... futex resumed>) = 0 [pid 1613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1614] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1613] <... mmap resumed>) = 0x7fc84e05e000 [pid 1613] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1613] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1615 attached , parent_tid=[1615], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1615 [pid 1613] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1613] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1615] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1615] umount2("./file0", MNT_DETACH) = 0 [pid 1615] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1613] <... futex resumed>) = 0 [pid 1613] exit_group(0) = ? [pid 1614] <... futex resumed>) = ? [pid 1614] +++ exited with 0 +++ [pid 1615] +++ exited with 0 +++ [pid 1613] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1613, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1616 ./strace-static-x86_64: Process 1616 attached [pid 1616] set_robust_list(0x5555564465e0, 24) = 0 [pid 1616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1616] setpgid(0, 0) = 0 [pid 1616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1616] write(3, "1000", 4) = 4 [pid 1616] close(3) = 0 [pid 1616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1616] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1616] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1617 attached [pid 1617] set_robust_list(0x7fc84e09f9e0, 24 [pid 1616] <... clone resumed>, parent_tid=[1617], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1617 [pid 1617] <... set_robust_list resumed>) = 0 [pid 1617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1617] <... futex resumed>) = 0 [pid 1616] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1617] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1616] <... futex resumed>) = 0 [pid 1616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1617] <... futex resumed>) = 0 [pid 1617] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1616] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1617] <... mount resumed>) = 0 [pid 1617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1616] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1617] <... futex resumed>) = 0 [pid 1617] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1616] <... futex resumed>) = 0 [pid 1616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1616] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1617] umount2("./file0", MNT_DETACH [pid 1616] <... futex resumed>) = 0 [pid 1616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1616] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1617] <... umount2 resumed>) = 0 [pid 1616] <... mprotect resumed>) = 0 [pid 1616] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1616] <... clone resumed>, parent_tid=[1618], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1618 [pid 1616] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1616] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1618 attached [pid 1618] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1618] umount2("./file0", MNT_DETACH) = 0 [pid 1618] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1616] <... futex resumed>) = 0 [pid 1618] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1616] exit_group(0) = ? [pid 1618] <... futex resumed>) = ? [pid 1617] <... futex resumed>) = ? [pid 1617] +++ exited with 0 +++ [pid 1618] +++ exited with 0 +++ [pid 1616] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1619 attached , child_tidptr=0x5555564465d0) = 1619 [pid 1619] set_robust_list(0x5555564465e0, 24) = 0 [pid 1619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1619] setpgid(0, 0) = 0 [pid 1619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1619] write(3, "1000", 4) = 4 [pid 1619] close(3) = 0 [pid 1619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1619] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1619] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1620 attached [pid 1620] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1619] <... clone resumed>, parent_tid=[1620], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1620 [pid 1619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1620] <... futex resumed>) = 0 [pid 1620] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1619] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1620] <... futex resumed>) = 0 [pid 1620] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1619] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1620] <... mount resumed>) = 0 [pid 1620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1619] <... futex resumed>) = 0 [pid 1619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1620] <... futex resumed>) = 0 [pid 1620] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1619] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1620] <... mount resumed>) = 0 [pid 1620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1619] <... futex resumed>) = 0 [pid 1619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1619] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1619] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1619] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1620] umount2("./file0", MNT_DETACH [pid 1619] <... clone resumed>, parent_tid=[1621], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1621 [pid 1619] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1619] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1621 attached [pid 1621] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1621] umount2("./file0", MNT_DETACH [pid 1620] <... umount2 resumed>) = 0 [pid 1621] <... umount2 resumed>) = 0 [pid 1621] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1619] <... futex resumed>) = 0 [pid 1621] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1619] exit_group(0) = ? [pid 1621] <... futex resumed>) = 231 [pid 1621] +++ exited with 0 +++ [pid 1620] <... futex resumed>) = ? [pid 1620] +++ exited with 0 +++ [pid 1619] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1619, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1622 ./strace-static-x86_64: Process 1622 attached [pid 1622] set_robust_list(0x5555564465e0, 24) = 0 [pid 1622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1622] setpgid(0, 0) = 0 [pid 1622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1622] write(3, "1000", 4) = 4 [pid 1622] close(3) = 0 [pid 1622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1622] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1622] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1623 attached , parent_tid=[1623], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1623 [pid 1622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1622] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1623] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1623] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1623] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1622] <... futex resumed>) = 0 [pid 1622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1623] <... futex resumed>) = 0 [pid 1622] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1623] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1622] <... futex resumed>) = 0 [pid 1623] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1622] <... futex resumed>) = 0 [pid 1623] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1622] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1623] <... mount resumed>) = 0 [pid 1623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1622] <... futex resumed>) = 0 [pid 1623] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1622] <... futex resumed>) = 0 [pid 1623] umount2("./file0", MNT_DETACH [pid 1622] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1623] <... umount2 resumed>) = 0 [pid 1622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1622] <... mmap resumed>) = 0x7fc84e05e000 [pid 1623] <... futex resumed>) = 0 [pid 1622] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1623] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1622] <... mprotect resumed>) = 0 [pid 1622] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1624 attached , parent_tid=[1624], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1624 [pid 1624] set_robust_list(0x7fc84e07e9e0, 24 [pid 1622] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1624] <... set_robust_list resumed>) = 0 [pid 1622] <... futex resumed>) = 0 [pid 1624] umount2("./file0", MNT_DETACH [pid 1622] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1624] <... umount2 resumed>) = 0 [pid 1624] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1622] <... futex resumed>) = 0 [pid 1624] <... futex resumed>) = 1 [pid 1624] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1622] exit_group(0 [pid 1623] <... futex resumed>) = ? [pid 1622] <... exit_group resumed>) = ? [pid 1624] <... futex resumed>) = ? [pid 1623] +++ exited with 0 +++ [pid 1624] +++ exited with 0 +++ [pid 1622] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1622, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1625 attached , child_tidptr=0x5555564465d0) = 1625 [pid 1625] set_robust_list(0x5555564465e0, 24) = 0 [pid 1625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1625] setpgid(0, 0) = 0 [pid 1625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1625] write(3, "1000", 4) = 4 [pid 1625] close(3) = 0 [pid 1625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1625] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1625] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1626 attached , parent_tid=[1626], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1626 [pid 1625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1626] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1626] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1625] <... futex resumed>) = 0 [pid 1625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1626] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1625] <... futex resumed>) = 0 [pid 1625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1626] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1625] <... futex resumed>) = 0 [pid 1625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1625] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1626] umount2("./file0", MNT_DETACH [pid 1625] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1627], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1627 [pid 1626] <... umount2 resumed>) = 0 [pid 1625] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1625] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1627 attached [pid 1627] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1627] umount2("./file0", MNT_DETACH [pid 1626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1626] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1627] <... umount2 resumed>) = 0 [pid 1627] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1625] <... futex resumed>) = 0 [pid 1625] exit_group(0) = ? [pid 1626] <... futex resumed>) = ? [pid 1627] <... futex resumed>) = ? [pid 1627] +++ exited with 0 +++ [pid 1626] +++ exited with 0 +++ [pid 1625] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1625, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1628 ./strace-static-x86_64: Process 1628 attached [pid 1628] set_robust_list(0x5555564465e0, 24) = 0 [pid 1628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1628] setpgid(0, 0) = 0 [pid 1628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1628] write(3, "1000", 4) = 4 [pid 1628] close(3) = 0 [pid 1628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1628] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1628] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1629 attached , parent_tid=[1629], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1629 [pid 1629] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1629] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1629] <... futex resumed>) = 0 [pid 1628] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1629] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1629] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1629] <... futex resumed>) = 0 [pid 1629] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1628] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1629] <... mount resumed>) = 0 [pid 1629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1629] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1628] <... futex resumed>) = 0 [pid 1628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1629] <... futex resumed>) = 0 [pid 1629] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1628] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1629] <... mount resumed>) = 0 [pid 1629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1629] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1628] <... futex resumed>) = 0 [pid 1628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1629] <... futex resumed>) = 0 [pid 1628] <... futex resumed>) = 1 [pid 1629] umount2("./file0", MNT_DETACH [pid 1628] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1628] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1628] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1629] <... umount2 resumed>) = 0 [pid 1629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1628] <... clone resumed>, parent_tid=[1630], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1630 [pid 1629] <... futex resumed>) = 0 [pid 1628] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1629] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1628] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1630 attached [pid 1630] set_robust_list(0x7fc84e07e9e0, 24 [pid 1628] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1630] <... set_robust_list resumed>) = 0 [pid 1630] umount2("./file0", MNT_DETACH) = 0 [pid 1630] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1628] <... futex resumed>) = 0 [pid 1630] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1628] exit_group(0) = ? [pid 1630] <... futex resumed>) = 231 [pid 1629] <... futex resumed>) = ? [pid 1629] +++ exited with 0 +++ [pid 1630] +++ exited with 0 +++ [pid 1628] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1628, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1631 attached , child_tidptr=0x5555564465d0) = 1631 [pid 1631] set_robust_list(0x5555564465e0, 24) = 0 [pid 1631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1631] setpgid(0, 0) = 0 [pid 1631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1631] write(3, "1000", 4) = 4 [pid 1631] close(3) = 0 [pid 1631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1631] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1631] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1632 attached , parent_tid=[1632], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1632 [pid 1631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1631] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1632] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1632] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1631] <... futex resumed>) = 0 [pid 1631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1631] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1632] <... futex resumed>) = 1 [pid 1632] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1631] <... futex resumed>) = 0 [pid 1632] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1631] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1632] <... mount resumed>) = 0 [pid 1632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1631] <... futex resumed>) = 0 [pid 1631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1631] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1631] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1631] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1632] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1633 attached [pid 1631] <... clone resumed>, parent_tid=[1633], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1633 [pid 1633] set_robust_list(0x7fc84e07e9e0, 24 [pid 1631] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1633] <... set_robust_list resumed>) = 0 [pid 1631] <... futex resumed>) = 0 [pid 1633] umount2("./file0", MNT_DETACH [pid 1631] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1633] <... umount2 resumed>) = 0 [pid 1633] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1631] <... futex resumed>) = 0 [pid 1633] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1632] <... umount2 resumed>) = 0 [pid 1632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1632] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1631] exit_group(0) = ? [pid 1633] <... futex resumed>) = ? [pid 1633] +++ exited with 0 +++ [pid 1632] <... futex resumed>) = ? [pid 1632] +++ exited with 0 +++ [pid 1631] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1631, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1634 ./strace-static-x86_64: Process 1634 attached [pid 1634] set_robust_list(0x5555564465e0, 24) = 0 [pid 1634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1634] setpgid(0, 0) = 0 [pid 1634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1634] write(3, "1000", 4) = 4 [pid 1634] close(3) = 0 [pid 1634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1634] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1634] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1635 attached , parent_tid=[1635], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1635 [pid 1634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1635] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1635] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1634] <... futex resumed>) = 0 [pid 1635] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1635] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1634] <... futex resumed>) = 0 [pid 1634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1635] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1634] <... futex resumed>) = 0 [pid 1634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1634] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1635] umount2("./file0", MNT_DETACH [pid 1634] <... mprotect resumed>) = 0 [pid 1634] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1635] <... umount2 resumed>) = 0 [pid 1634] <... clone resumed>, parent_tid=[1636], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1636 [pid 1635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1634] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1634] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1636 attached [pid 1636] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1636] umount2("./file0", MNT_DETACH) = 0 [pid 1636] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1635] <... futex resumed>) = 0 [pid 1634] <... futex resumed>) = 0 [pid 1636] <... futex resumed>) = 1 [pid 1635] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1634] exit_group(0) = ? [pid 1635] <... futex resumed>) = ? [pid 1636] +++ exited with 0 +++ [pid 1635] +++ exited with 0 +++ [pid 1634] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1634, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1637 ./strace-static-x86_64: Process 1637 attached [pid 1637] set_robust_list(0x5555564465e0, 24) = 0 [pid 1637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1637] setpgid(0, 0) = 0 [pid 1637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1637] write(3, "1000", 4) = 4 [pid 1637] close(3) = 0 [pid 1637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1637] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1637] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1638], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1638 [pid 1637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1638 attached [pid 1638] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1638] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1637] <... futex resumed>) = 0 [pid 1637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1638] <... futex resumed>) = 1 [pid 1638] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1637] <... futex resumed>) = 0 [pid 1637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1638] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1637] <... futex resumed>) = 0 [pid 1637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1637] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1638] umount2("./file0", MNT_DETACH [pid 1637] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1639], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1639 [pid 1638] <... umount2 resumed>) = 0 [pid 1637] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1637] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1639 attached [pid 1639] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1639] umount2("./file0", MNT_DETACH [pid 1638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1639] <... umount2 resumed>) = 0 [pid 1639] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1638] <... futex resumed>) = 0 [pid 1637] <... futex resumed>) = 0 [pid 1637] exit_group(0) = ? [pid 1639] <... futex resumed>) = ? [pid 1638] +++ exited with 0 +++ [pid 1639] +++ exited with 0 +++ [pid 1637] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1637, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1640 ./strace-static-x86_64: Process 1640 attached [pid 1640] set_robust_list(0x5555564465e0, 24) = 0 [pid 1640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1640] setpgid(0, 0) = 0 [pid 1640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1640] write(3, "1000", 4) = 4 [pid 1640] close(3) = 0 [pid 1640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1640] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1640] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1641], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1641 [pid 1640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1640] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1641 attached [pid 1641] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1641] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1640] <... futex resumed>) = 0 [pid 1640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1640] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1641] <... futex resumed>) = 1 [pid 1641] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1640] <... futex resumed>) = 0 [pid 1640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1640] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1641] <... futex resumed>) = 1 [pid 1641] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1640] <... futex resumed>) = 0 [pid 1640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1640] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1641] umount2("./file0", MNT_DETACH [pid 1640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1640] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1640] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1642], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1642 ./strace-static-x86_64: Process 1642 attached [pid 1640] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1641] <... umount2 resumed>) = 0 [pid 1640] <... futex resumed>) = 0 [pid 1640] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1642] set_robust_list(0x7fc84e07e9e0, 24 [pid 1641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1642] <... set_robust_list resumed>) = 0 [pid 1641] <... futex resumed>) = 0 [pid 1642] umount2("./file0", MNT_DETACH [pid 1641] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1642] <... umount2 resumed>) = 0 [pid 1642] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1640] <... futex resumed>) = 0 [pid 1642] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1640] exit_group(0) = ? [pid 1641] <... futex resumed>) = ? [pid 1642] <... futex resumed>) = 231 [pid 1641] +++ exited with 0 +++ [pid 1642] +++ exited with 0 +++ [pid 1640] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1640, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1643 attached , child_tidptr=0x5555564465d0) = 1643 [pid 1643] set_robust_list(0x5555564465e0, 24) = 0 [pid 1643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1643] setpgid(0, 0) = 0 [pid 1643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1643] write(3, "1000", 4) = 4 [pid 1643] close(3) = 0 [pid 1643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1643] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1643] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1643] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1644 attached , parent_tid=[1644], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1644 [pid 1644] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1644] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1644] <... futex resumed>) = 0 [pid 1643] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1644] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1643] <... futex resumed>) = 0 [pid 1643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1643] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1644] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1643] <... futex resumed>) = 0 [pid 1644] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1644] <... mount resumed>) = 0 [pid 1643] <... futex resumed>) = 0 [pid 1644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1643] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1644] <... futex resumed>) = 0 [pid 1643] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1644] umount2("./file0", MNT_DETACH [pid 1643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1643] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1643] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1644] <... umount2 resumed>) = 0 [pid 1644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1643] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1644] <... futex resumed>) = 0 [pid 1643] <... mprotect resumed>) = 0 [pid 1644] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1643] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1645 attached , parent_tid=[1645], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1645 [pid 1645] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1645] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1643] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1645] <... futex resumed>) = 0 [pid 1645] umount2("./file0", MNT_DETACH [pid 1643] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1645] <... umount2 resumed>) = 0 [pid 1645] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1645] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1643] <... futex resumed>) = 0 [pid 1643] exit_group(0 [pid 1644] <... futex resumed>) = ? [pid 1643] <... exit_group resumed>) = ? [pid 1645] <... futex resumed>) = ? [pid 1644] +++ exited with 0 +++ [pid 1645] +++ exited with 0 +++ [pid 1643] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1643, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1646 attached , child_tidptr=0x5555564465d0) = 1646 [pid 1646] set_robust_list(0x5555564465e0, 24) = 0 [pid 1646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1646] setpgid(0, 0) = 0 [pid 1646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1646] write(3, "1000", 4) = 4 [pid 1646] close(3) = 0 [pid 1646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1646] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1646] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1647], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1647 [pid 1646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1647 attached [pid 1647] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1647] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1646] <... futex resumed>) = 0 [pid 1646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1647] <... futex resumed>) = 1 [pid 1647] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1646] <... futex resumed>) = 0 [pid 1646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1647] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1646] <... futex resumed>) = 0 [pid 1646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1646] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1647] umount2("./file0", MNT_DETACH [pid 1646] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1648], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1648 [pid 1646] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1646] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1647] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1648 attached [pid 1647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1648] set_robust_list(0x7fc84e07e9e0, 24 [pid 1647] <... futex resumed>) = 0 [pid 1648] <... set_robust_list resumed>) = 0 [pid 1647] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1648] umount2("./file0", MNT_DETACH) = 0 [pid 1648] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1646] <... futex resumed>) = 0 [pid 1646] exit_group(0) = ? [pid 1647] <... futex resumed>) = ? [pid 1647] +++ exited with 0 +++ [pid 1648] +++ exited with 0 +++ [pid 1646] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1646, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1649 ./strace-static-x86_64: Process 1649 attached [pid 1649] set_robust_list(0x5555564465e0, 24) = 0 [pid 1649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1649] setpgid(0, 0) = 0 [pid 1649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1649] write(3, "1000", 4) = 4 [pid 1649] close(3) = 0 [pid 1649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1649] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1649] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1649] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1650], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1650 [pid 1649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1649] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1650 attached [pid 1650] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1650] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1649] <... futex resumed>) = 0 [pid 1649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1649] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1650] <... futex resumed>) = 1 [pid 1650] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1649] <... futex resumed>) = 0 [pid 1650] <... futex resumed>) = 1 [pid 1649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1650] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1649] <... futex resumed>) = 0 [pid 1649] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1650] <... mount resumed>) = 0 [pid 1650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1649] <... futex resumed>) = 0 [pid 1649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1649] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1649] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1650] umount2("./file0", MNT_DETACH [pid 1649] <... mmap resumed>) = 0x7fc84e05e000 [pid 1649] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1650] <... umount2 resumed>) = 0 [pid 1649] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1649] <... clone resumed>, parent_tid=[1651], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1651 [pid 1649] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1649] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1650] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1651 attached [pid 1651] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1651] umount2("./file0", MNT_DETACH [pid 1650] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1651] <... umount2 resumed>) = 0 [pid 1651] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1649] <... futex resumed>) = 0 [pid 1649] exit_group(0) = ? [pid 1651] <... futex resumed>) = ? [pid 1650] <... futex resumed>) = ? [pid 1651] +++ exited with 0 +++ [pid 1650] +++ exited with 0 +++ [pid 1649] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1649, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1652 attached , child_tidptr=0x5555564465d0) = 1652 [pid 1652] set_robust_list(0x5555564465e0, 24) = 0 [pid 1652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1652] setpgid(0, 0) = 0 [pid 1652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1652] write(3, "1000", 4) = 4 [pid 1652] close(3) = 0 [pid 1652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1652] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1652] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1653 attached , parent_tid=[1653], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1653 [pid 1653] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1653] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1653] <... futex resumed>) = 0 [pid 1653] mkdir("./file0", 000 [pid 1652] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1653] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1653] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1652] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1653] <... futex resumed>) = 0 [pid 1653] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1652] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1653] <... mount resumed>) = 0 [pid 1653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1652] <... futex resumed>) = 0 [pid 1652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1652] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1653] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1652] <... futex resumed>) = 0 [pid 1652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1652] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1652] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1652] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1654], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1654 [pid 1652] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1652] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1654 attached [pid 1653] umount2("./file0", MNT_DETACH [pid 1654] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1654] umount2("./file0", MNT_DETACH [pid 1653] <... umount2 resumed>) = 0 [pid 1654] <... umount2 resumed>) = 0 [pid 1653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1654] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1652] <... futex resumed>) = 0 [pid 1652] exit_group(0) = ? [pid 1654] <... futex resumed>) = ? [pid 1653] <... futex resumed>) = ? [pid 1653] +++ exited with 0 +++ [pid 1654] +++ exited with 0 +++ [pid 1652] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1652, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1655 attached , child_tidptr=0x5555564465d0) = 1655 [pid 1655] set_robust_list(0x5555564465e0, 24) = 0 [pid 1655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1655] setpgid(0, 0) = 0 [pid 1655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1655] write(3, "1000", 4) = 4 [pid 1655] close(3) = 0 [pid 1655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1655] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1655] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1656 attached , parent_tid=[1656], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1656 [pid 1656] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1656] <... futex resumed>) = 0 [pid 1655] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1656] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1656] <... futex resumed>) = 0 [pid 1656] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1655] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1656] <... mount resumed>) = 0 [pid 1656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1656] <... futex resumed>) = 0 [pid 1656] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1655] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1656] <... mount resumed>) = 0 [pid 1656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] <... futex resumed>) = 0 [pid 1655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1656] <... futex resumed>) = 0 [pid 1656] umount2("./file0", MNT_DETACH [pid 1655] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1656] <... umount2 resumed>) = 0 [pid 1655] <... futex resumed>) = 0 [pid 1656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1655] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1655] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1657 attached , parent_tid=[1657], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1657 [pid 1657] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1657] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1657] <... futex resumed>) = 0 [pid 1657] umount2("./file0", MNT_DETACH) = 0 [pid 1655] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1657] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1657] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1655] exit_group(0 [pid 1656] <... futex resumed>) = ? [pid 1655] <... exit_group resumed>) = ? [pid 1656] +++ exited with 0 +++ [pid 1657] <... futex resumed>) = ? [pid 1657] +++ exited with 0 +++ [pid 1655] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1655, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1658 ./strace-static-x86_64: Process 1658 attached [pid 1658] set_robust_list(0x5555564465e0, 24) = 0 [pid 1658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1658] setpgid(0, 0) = 0 [pid 1658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1658] write(3, "1000", 4) = 4 [pid 1658] close(3) = 0 [pid 1658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1658] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1658] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1659], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1659 [pid 1658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1658] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1659 attached [pid 1659] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1659] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1658] <... futex resumed>) = 0 [pid 1658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1658] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1659] <... futex resumed>) = 1 [pid 1659] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1658] <... futex resumed>) = 0 [pid 1659] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1658] <... futex resumed>) = 0 [pid 1659] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1658] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1659] <... mount resumed>) = 0 [pid 1659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1658] <... futex resumed>) = 0 [pid 1659] umount2("./file0", MNT_DETACH [pid 1658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1658] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1658] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1658] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1660 attached , parent_tid=[1660], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1660 [pid 1660] set_robust_list(0x7fc84e07e9e0, 24 [pid 1658] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1660] <... set_robust_list resumed>) = 0 [pid 1658] <... futex resumed>) = 0 [pid 1660] umount2("./file0", MNT_DETACH [pid 1658] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1660] <... umount2 resumed>) = 0 [pid 1659] <... umount2 resumed>) = 0 [pid 1660] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1658] <... futex resumed>) = 0 [pid 1660] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1659] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1658] exit_group(0) = ? [pid 1660] <... futex resumed>) = ? [pid 1659] <... futex resumed>) = ? [pid 1660] +++ exited with 0 +++ [pid 1659] +++ exited with 0 +++ [pid 1658] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1658, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1661 ./strace-static-x86_64: Process 1661 attached [pid 1661] set_robust_list(0x5555564465e0, 24) = 0 [pid 1661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1661] setpgid(0, 0) = 0 [pid 1661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1661] write(3, "1000", 4) = 4 [pid 1661] close(3) = 0 [pid 1661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1661] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1661] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1661] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1662 attached [pid 1662] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1662] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1661] <... clone resumed>, parent_tid=[1662], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1662 [pid 1661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1662] <... futex resumed>) = 0 [pid 1661] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1662] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1661] <... futex resumed>) = 0 [pid 1661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1661] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1662] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1661] <... futex resumed>) = 0 [pid 1661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1661] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1662] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1661] <... futex resumed>) = 0 [pid 1662] umount2("./file0", MNT_DETACH [pid 1661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1662] <... umount2 resumed>) = 0 [pid 1661] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1661] <... futex resumed>) = 0 [pid 1662] <... futex resumed>) = 0 [pid 1661] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1662] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1661] <... mmap resumed>) = 0x7fc84e05e000 [pid 1661] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1661] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1663 attached , parent_tid=[1663], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1663 [pid 1663] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1663] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1661] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1663] <... futex resumed>) = 0 [pid 1663] umount2("./file0", MNT_DETACH [pid 1661] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1663] <... umount2 resumed>) = 0 [pid 1663] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1663] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1661] <... futex resumed>) = 0 [pid 1661] exit_group(0) = ? [pid 1663] <... futex resumed>) = ? [pid 1662] <... futex resumed>) = ? [pid 1663] +++ exited with 0 +++ [pid 1662] +++ exited with 0 +++ [pid 1661] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1661, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1664 attached , child_tidptr=0x5555564465d0) = 1664 [pid 1664] set_robust_list(0x5555564465e0, 24) = 0 [pid 1664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1664] setpgid(0, 0) = 0 [pid 1664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1664] write(3, "1000", 4) = 4 [pid 1664] close(3) = 0 [pid 1664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1664] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1664] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1665 attached , parent_tid=[1665], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1665 [pid 1664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1664] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1665] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1665] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1665] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1664] <... futex resumed>) = 0 [pid 1664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1665] <... futex resumed>) = 0 [pid 1665] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1664] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1665] <... mount resumed>) = 0 [pid 1665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1665] <... futex resumed>) = 0 [pid 1665] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1665] <... futex resumed>) = 0 [pid 1665] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1664] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1665] <... mount resumed>) = 0 [pid 1665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1665] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1664] <... futex resumed>) = 0 [pid 1664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1665] <... futex resumed>) = 0 [pid 1665] umount2("./file0", MNT_DETACH [pid 1664] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1665] <... umount2 resumed>) = 0 [pid 1664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1665] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1664] <... mmap resumed>) = 0x7fc84e05e000 [pid 1664] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1664] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1666 attached [pid 1666] set_robust_list(0x7fc84e07e9e0, 24 [pid 1664] <... clone resumed>, parent_tid=[1666], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1666 [pid 1666] <... set_robust_list resumed>) = 0 [pid 1664] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1666] umount2("./file0", MNT_DETACH [pid 1664] <... futex resumed>) = 0 [pid 1664] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1666] <... umount2 resumed>) = 0 [pid 1666] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1664] <... futex resumed>) = 0 [pid 1666] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1664] exit_group(0 [pid 1666] <... futex resumed>) = ? [pid 1664] <... exit_group resumed>) = ? [pid 1665] <... futex resumed>) = ? [pid 1665] +++ exited with 0 +++ [pid 1666] +++ exited with 0 +++ [pid 1664] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1664, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1667 ./strace-static-x86_64: Process 1667 attached [pid 1667] set_robust_list(0x5555564465e0, 24) = 0 [pid 1667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1667] setpgid(0, 0) = 0 [pid 1667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1667] write(3, "1000", 4) = 4 [pid 1667] close(3) = 0 [pid 1667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1667] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1667] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1667] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1668 attached , parent_tid=[1668], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1668 [pid 1668] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1668] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1667] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1668] <... futex resumed>) = 0 [pid 1668] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1668] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1668] <... futex resumed>) = 0 [pid 1668] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1667] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1668] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] <... futex resumed>) = 0 [pid 1667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1668] <... futex resumed>) = 0 [pid 1668] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1667] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1668] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1668] <... futex resumed>) = 0 [pid 1668] umount2("./file0", MNT_DETACH) = 0 [pid 1667] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1668] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] <... futex resumed>) = 0 [pid 1667] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1667] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1667] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1669 attached [pid 1669] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1669] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] <... clone resumed>, parent_tid=[1669], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1669 [pid 1667] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1669] <... futex resumed>) = 0 [pid 1669] umount2("./file0", MNT_DETACH) = 0 [pid 1667] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1669] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1669] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1667] exit_group(0 [pid 1668] <... futex resumed>) = ? [pid 1667] <... exit_group resumed>) = ? [pid 1668] +++ exited with 0 +++ [pid 1669] <... futex resumed>) = ? [pid 1669] +++ exited with 0 +++ [pid 1667] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1667, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1670 ./strace-static-x86_64: Process 1670 attached [pid 1670] set_robust_list(0x5555564465e0, 24) = 0 [pid 1670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1670] setpgid(0, 0) = 0 [pid 1670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1670] write(3, "1000", 4) = 4 [pid 1670] close(3) = 0 [pid 1670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1670] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1670] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1671 attached , parent_tid=[1671], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1671 [pid 1671] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1671] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1671] <... futex resumed>) = 0 [pid 1671] mkdir("./file0", 000 [pid 1670] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1671] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1670] <... futex resumed>) = 0 [pid 1670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1670] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1671] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1670] <... futex resumed>) = 0 [pid 1671] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1670] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1671] <... futex resumed>) = 0 [pid 1671] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1670] <... futex resumed>) = 0 [pid 1670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1670] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1670] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1671] umount2("./file0", MNT_DETACH [pid 1670] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1672 attached , parent_tid=[1672], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1672 [pid 1672] set_robust_list(0x7fc84e07e9e0, 24 [pid 1671] <... umount2 resumed>) = 0 [pid 1671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1671] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1670] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1672] <... set_robust_list resumed>) = 0 [pid 1670] <... futex resumed>) = 0 [pid 1670] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1672] umount2("./file0", MNT_DETACH) = 0 [pid 1672] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1670] <... futex resumed>) = 0 [pid 1670] exit_group(0) = ? [pid 1671] <... futex resumed>) = ? [pid 1671] +++ exited with 0 +++ [pid 1672] <... futex resumed>) = ? [pid 1672] +++ exited with 0 +++ [pid 1670] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1670, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1673 attached , child_tidptr=0x5555564465d0) = 1673 [pid 1673] set_robust_list(0x5555564465e0, 24) = 0 [pid 1673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1673] setpgid(0, 0) = 0 [pid 1673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1673] write(3, "1000", 4) = 4 [pid 1673] close(3) = 0 [pid 1673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1673] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1673] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1674 attached , parent_tid=[1674], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1674 [pid 1673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1673] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1674] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1674] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1673] <... futex resumed>) = 0 [pid 1674] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1673] <... futex resumed>) = 0 [pid 1673] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1674] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1673] <... futex resumed>) = 0 [pid 1673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1674] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1673] <... futex resumed>) = 0 [pid 1673] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1674] <... mount resumed>) = 0 [pid 1674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1673] <... futex resumed>) = 0 [pid 1673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1673] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1673] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1673] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1674] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1675 attached [pid 1673] <... clone resumed>, parent_tid=[1675], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1675 [pid 1673] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1673] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1675] set_robust_list(0x7fc84e07e9e0, 24 [pid 1674] <... umount2 resumed>) = 0 [pid 1675] <... set_robust_list resumed>) = 0 [pid 1674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1675] umount2("./file0", MNT_DETACH [pid 1674] <... futex resumed>) = 0 [pid 1674] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1675] <... umount2 resumed>) = 0 [pid 1675] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1675] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1673] <... futex resumed>) = 0 [pid 1673] exit_group(0) = ? [pid 1675] <... futex resumed>) = ? [pid 1674] <... futex resumed>) = ? [pid 1675] +++ exited with 0 +++ [pid 1674] +++ exited with 0 +++ [pid 1673] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1673, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1676 ./strace-static-x86_64: Process 1676 attached [pid 1676] set_robust_list(0x5555564465e0, 24) = 0 [pid 1676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1676] setpgid(0, 0) = 0 [pid 1676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1676] write(3, "1000", 4) = 4 [pid 1676] close(3) = 0 [pid 1676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1676] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1676] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1677 attached [pid 1677] set_robust_list(0x7fc84e09f9e0, 24 [pid 1676] <... clone resumed>, parent_tid=[1677], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1677 [pid 1677] <... set_robust_list resumed>) = 0 [pid 1677] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1677] <... futex resumed>) = 0 [pid 1677] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1676] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1677] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1677] <... futex resumed>) = 0 [pid 1676] <... futex resumed>) = 1 [pid 1677] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1676] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1677] <... mount resumed>) = 0 [pid 1677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1676] <... futex resumed>) = 0 [pid 1677] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1676] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1677] <... mount resumed>) = 0 [pid 1677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1676] <... futex resumed>) = 0 [pid 1677] umount2("./file0", MNT_DETACH [pid 1676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1676] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1677] <... umount2 resumed>) = 0 [pid 1677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1676] <... mmap resumed>) = 0x7fc84e05e000 [pid 1677] <... futex resumed>) = 0 [pid 1676] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1677] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1676] <... mprotect resumed>) = 0 [pid 1676] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1678 attached , parent_tid=[1678], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1678 [pid 1678] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1678] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1676] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1678] <... futex resumed>) = 0 [pid 1678] umount2("./file0", MNT_DETACH) = 0 [pid 1678] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1678] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1676] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1676] exit_group(0) = ? [pid 1677] <... futex resumed>) = 230 [pid 1678] <... futex resumed>) = ? [pid 1678] +++ exited with 0 +++ [pid 1677] +++ exited with 0 +++ [pid 1676] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1676, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1679 attached , child_tidptr=0x5555564465d0) = 1679 [pid 1679] set_robust_list(0x5555564465e0, 24) = 0 [pid 1679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1679] setpgid(0, 0) = 0 [pid 1679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1679] write(3, "1000", 4) = 4 [pid 1679] close(3) = 0 [pid 1679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1679] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1679] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1679] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1680 attached , parent_tid=[1680], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1680 [pid 1680] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1679] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1680] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1679] <... futex resumed>) = 0 [pid 1680] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1680] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1679] <... futex resumed>) = 0 [pid 1680] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1679] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1680] <... mount resumed>) = 0 [pid 1680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1679] <... futex resumed>) = 0 [pid 1680] <... futex resumed>) = 1 [pid 1679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1680] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1679] <... futex resumed>) = 0 [pid 1679] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1680] <... mount resumed>) = 0 [pid 1680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1679] <... futex resumed>) = 0 [pid 1680] <... futex resumed>) = 1 [pid 1679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1680] umount2("./file0", MNT_DETACH [pid 1679] <... futex resumed>) = 0 [pid 1679] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1679] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1679] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1680] <... umount2 resumed>) = 0 [pid 1679] <... mprotect resumed>) = 0 [pid 1680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1679] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1680] <... futex resumed>) = 0 [pid 1680] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1681 attached [pid 1679] <... clone resumed>, parent_tid=[1681], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1681 [pid 1681] set_robust_list(0x7fc84e07e9e0, 24 [pid 1679] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1681] <... set_robust_list resumed>) = 0 [pid 1679] <... futex resumed>) = 0 [pid 1681] umount2("./file0", MNT_DETACH [pid 1679] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1681] <... umount2 resumed>) = 0 [pid 1681] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1679] <... futex resumed>) = 0 [pid 1681] <... futex resumed>) = 1 [pid 1679] exit_group(0 [pid 1681] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1680] <... futex resumed>) = ? [pid 1679] <... exit_group resumed>) = ? [pid 1681] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1680] +++ exited with 0 +++ [pid 1681] +++ exited with 0 +++ [pid 1679] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1679, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1682 ./strace-static-x86_64: Process 1682 attached [pid 1682] set_robust_list(0x5555564465e0, 24) = 0 [pid 1682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1682] setpgid(0, 0) = 0 [pid 1682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1682] write(3, "1000", 4) = 4 [pid 1682] close(3) = 0 [pid 1682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1682] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1682] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1683 attached , parent_tid=[1683], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1683 [pid 1682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1682] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1683] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1683] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1682] <... futex resumed>) = 0 [pid 1683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1683] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1682] <... futex resumed>) = 0 [pid 1683] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1682] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1683] <... mount resumed>) = 0 [pid 1683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1682] <... futex resumed>) = 0 [pid 1682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1682] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1683] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1682] <... futex resumed>) = 0 [pid 1682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1682] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1682] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1682] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1683] umount2("./file0", MNT_DETACH [pid 1682] <... clone resumed>, parent_tid=[1684], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1684 [pid 1682] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1682] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1684 attached [pid 1684] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1684] umount2("./file0", MNT_DETACH) = 0 [pid 1684] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1682] <... futex resumed>) = 0 [pid 1683] <... umount2 resumed>) = 0 [pid 1684] <... futex resumed>) = 1 [pid 1684] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1682] exit_group(0) = ? [pid 1684] <... futex resumed>) = ? [pid 1684] +++ exited with 0 +++ [pid 1683] <... futex resumed>) = ? [pid 1683] +++ exited with 0 +++ [pid 1682] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1682, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1685 ./strace-static-x86_64: Process 1685 attached [pid 1685] set_robust_list(0x5555564465e0, 24) = 0 [pid 1685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1685] setpgid(0, 0) = 0 [pid 1685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1685] write(3, "1000", 4) = 4 [pid 1685] close(3) = 0 [pid 1685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1685] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1685] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1686 attached [pid 1686] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... clone resumed>, parent_tid=[1686], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1686 [pid 1685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1686] <... futex resumed>) = 0 [pid 1686] mkdir("./file0", 000 [pid 1685] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1686] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1686] <... futex resumed>) = 0 [pid 1686] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1685] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1686] <... mount resumed>) = 0 [pid 1686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1686] <... futex resumed>) = 0 [pid 1686] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1685] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1686] <... mount resumed>) = 0 [pid 1686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... futex resumed>) = 0 [pid 1685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1686] <... futex resumed>) = 0 [pid 1686] umount2("./file0", MNT_DETACH) = 0 [pid 1685] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... futex resumed>) = 0 [pid 1685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1685] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1685] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1687 attached [pid 1687] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1687] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... clone resumed>, parent_tid=[1687], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1687 [pid 1685] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1687] <... futex resumed>) = 0 [pid 1687] umount2("./file0", MNT_DETACH [pid 1685] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1687] <... umount2 resumed>) = 0 [pid 1687] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1687] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1685] exit_group(0 [pid 1686] <... futex resumed>) = ? [pid 1685] <... exit_group resumed>) = ? [pid 1686] +++ exited with 0 +++ [pid 1687] <... futex resumed>) = ? [pid 1687] +++ exited with 0 +++ [pid 1685] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1685, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1688 ./strace-static-x86_64: Process 1688 attached [pid 1688] set_robust_list(0x5555564465e0, 24) = 0 [pid 1688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1688] setpgid(0, 0) = 0 [pid 1688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1688] write(3, "1000", 4) = 4 [pid 1688] close(3) = 0 [pid 1688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1688] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1688] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1689 attached , parent_tid=[1689], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1689 [pid 1689] set_robust_list(0x7fc84e09f9e0, 24 [pid 1688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1689] <... set_robust_list resumed>) = 0 [pid 1688] <... futex resumed>) = 0 [pid 1689] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1688] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1689] <... futex resumed>) = 0 [pid 1689] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1688] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1689] <... mount resumed>) = 0 [pid 1689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1688] <... futex resumed>) = 0 [pid 1688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1689] <... futex resumed>) = 0 [pid 1688] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1689] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1688] <... futex resumed>) = 0 [pid 1689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1689] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1688] <... futex resumed>) = 0 [pid 1689] umount2("./file0", MNT_DETACH [pid 1688] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1689] <... umount2 resumed>) = 0 [pid 1688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1688] <... mmap resumed>) = 0x7fc84e05e000 [pid 1689] <... futex resumed>) = 0 [pid 1688] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1688] <... mprotect resumed>) = 0 [pid 1688] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1690 attached [pid 1690] set_robust_list(0x7fc84e07e9e0, 24 [pid 1688] <... clone resumed>, parent_tid=[1690], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1690 [pid 1690] <... set_robust_list resumed>) = 0 [pid 1688] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1690] umount2("./file0", MNT_DETACH [pid 1688] <... futex resumed>) = 0 [pid 1688] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1690] <... umount2 resumed>) = 0 [pid 1690] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1688] <... futex resumed>) = 0 [pid 1690] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1688] exit_group(0 [pid 1690] <... futex resumed>) = ? [pid 1689] <... futex resumed>) = ? [pid 1688] <... exit_group resumed>) = ? [pid 1689] +++ exited with 0 +++ [pid 1690] +++ exited with 0 +++ [pid 1688] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1688, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1691 ./strace-static-x86_64: Process 1691 attached [pid 1691] set_robust_list(0x5555564465e0, 24) = 0 [pid 1691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1691] setpgid(0, 0) = 0 [pid 1691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1691] write(3, "1000", 4) = 4 [pid 1691] close(3) = 0 [pid 1691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1691] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1691] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1691] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1692], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1692 ./strace-static-x86_64: Process 1692 attached [pid 1692] set_robust_list(0x7fc84e09f9e0, 24 [pid 1691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1691] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1692] <... set_robust_list resumed>) = 0 [pid 1692] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1691] <... futex resumed>) = 0 [pid 1692] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1691] <... futex resumed>) = 0 [pid 1692] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1691] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1692] <... mount resumed>) = 0 [pid 1692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1691] <... futex resumed>) = 0 [pid 1691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1691] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1692] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1691] <... futex resumed>) = 0 [pid 1691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1691] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1691] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1691] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1691] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1693], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1693 [pid 1691] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1691] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1693 attached [pid 1693] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1693] umount2("./file0", MNT_DETACH [pid 1692] umount2("./file0", MNT_DETACH [pid 1693] <... umount2 resumed>) = 0 [pid 1693] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1691] <... futex resumed>) = 0 [pid 1693] <... futex resumed>) = 1 [pid 1693] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1692] <... umount2 resumed>) = 0 [pid 1692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1692] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1691] exit_group(0) = ? [pid 1693] <... futex resumed>) = ? [pid 1693] +++ exited with 0 +++ [pid 1692] <... futex resumed>) = ? [pid 1692] +++ exited with 0 +++ [pid 1691] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1691, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1694 ./strace-static-x86_64: Process 1694 attached [pid 1694] set_robust_list(0x5555564465e0, 24) = 0 [pid 1694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1694] setpgid(0, 0) = 0 [pid 1694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1694] write(3, "1000", 4) = 4 [pid 1694] close(3) = 0 [pid 1694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1694] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1694] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1695], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1695 [pid 1694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1694] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1695 attached [pid 1695] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1695] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1694] <... futex resumed>) = 0 [pid 1694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1694] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1695] <... futex resumed>) = 1 [pid 1695] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1694] <... futex resumed>) = 0 [pid 1694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1695] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1694] <... futex resumed>) = 0 [pid 1694] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1695] <... mount resumed>) = 0 [pid 1695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1694] <... futex resumed>) = 0 [pid 1694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1694] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1694] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1695] umount2("./file0", MNT_DETACH [pid 1694] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1696], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1696 ./strace-static-x86_64: Process 1696 attached [pid 1694] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1696] set_robust_list(0x7fc84e07e9e0, 24 [pid 1694] <... futex resumed>) = 0 [pid 1695] <... umount2 resumed>) = 0 [pid 1694] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1696] <... set_robust_list resumed>) = 0 [pid 1695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1696] umount2("./file0", MNT_DETACH) = 0 [pid 1695] <... futex resumed>) = 0 [pid 1696] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1694] <... futex resumed>) = 0 [pid 1695] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1696] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1694] exit_group(0) = ? [pid 1695] <... futex resumed>) = ? [pid 1695] +++ exited with 0 +++ [pid 1696] <... futex resumed>) = ? [pid 1696] +++ exited with 0 +++ [pid 1694] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1694, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1697 ./strace-static-x86_64: Process 1697 attached [pid 1697] set_robust_list(0x5555564465e0, 24) = 0 [pid 1697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1697] setpgid(0, 0) = 0 [pid 1697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1697] write(3, "1000", 4) = 4 [pid 1697] close(3) = 0 [pid 1697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1697] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1697] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1697] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1698 attached , parent_tid=[1698], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1698 [pid 1697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1697] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1698] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1698] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1698] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1697] <... futex resumed>) = 0 [pid 1697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1698] <... futex resumed>) = 0 [pid 1697] <... futex resumed>) = 1 [pid 1698] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1697] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1698] <... mount resumed>) = 0 [pid 1698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1698] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1697] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1698] <... futex resumed>) = 0 [pid 1698] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1697] <... futex resumed>) = 0 [pid 1697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1697] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1697] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1697] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1698] umount2("./file0", MNT_DETACH [pid 1697] <... mprotect resumed>) = 0 [pid 1697] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1699], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1699 [pid 1697] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1697] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1699 attached [pid 1699] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1699] umount2("./file0", MNT_DETACH [pid 1698] <... umount2 resumed>) = 0 [pid 1699] <... umount2 resumed>) = 0 [pid 1699] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1697] <... futex resumed>) = 0 [pid 1699] <... futex resumed>) = 1 [pid 1699] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1698] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1697] exit_group(0) = ? [pid 1698] <... futex resumed>) = ? [pid 1698] +++ exited with 0 +++ [pid 1699] <... futex resumed>) = ? [pid 1699] +++ exited with 0 +++ [pid 1697] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1697, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1700 ./strace-static-x86_64: Process 1700 attached [pid 1700] set_robust_list(0x5555564465e0, 24) = 0 [pid 1700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1700] setpgid(0, 0) = 0 [pid 1700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1700] write(3, "1000", 4) = 4 [pid 1700] close(3) = 0 [pid 1700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1700] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1700] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1701], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1701 ./strace-static-x86_64: Process 1701 attached [pid 1700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1701] set_robust_list(0x7fc84e09f9e0, 24 [pid 1700] <... futex resumed>) = 0 [pid 1701] <... set_robust_list resumed>) = 0 [pid 1700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1701] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1700] <... futex resumed>) = 0 [pid 1700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1701] <... futex resumed>) = 1 [pid 1701] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1700] <... futex resumed>) = 0 [pid 1700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1701] <... futex resumed>) = 1 [pid 1701] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1700] <... futex resumed>) = 0 [pid 1700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1700] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1700] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1700] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1702], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1702 [pid 1700] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1700] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1702 attached [pid 1702] set_robust_list(0x7fc84e07e9e0, 24 [pid 1701] <... futex resumed>) = 1 [pid 1701] umount2("./file0", MNT_DETACH [pid 1702] <... set_robust_list resumed>) = 0 [pid 1701] <... umount2 resumed>) = 0 [pid 1702] umount2("./file0", MNT_DETACH [pid 1701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1702] <... umount2 resumed>) = 0 [pid 1701] <... futex resumed>) = 0 [pid 1702] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1702] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1700] <... futex resumed>) = 0 [pid 1700] exit_group(0) = ? [pid 1702] <... futex resumed>) = ? [pid 1702] +++ exited with 0 +++ [pid 1701] <... futex resumed>) = ? [pid 1701] +++ exited with 0 +++ [pid 1700] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1700, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1703 attached , child_tidptr=0x5555564465d0) = 1703 [pid 1703] set_robust_list(0x5555564465e0, 24) = 0 [pid 1703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1703] setpgid(0, 0) = 0 [pid 1703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1703] write(3, "1000", 4) = 4 [pid 1703] close(3) = 0 [pid 1703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1703] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1703] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1704], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1704 [pid 1703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1704 attached [pid 1704] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1704] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1703] <... futex resumed>) = 0 [pid 1704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1704] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1704] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1703] <... futex resumed>) = 0 [pid 1703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1704] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1703] <... futex resumed>) = 0 [pid 1704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1703] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1703] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1704] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1703] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1704] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1705 attached [pid 1705] set_robust_list(0x7fc84e07e9e0, 24 [pid 1704] <... umount2 resumed>) = 0 [pid 1703] <... clone resumed>, parent_tid=[1705], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1705 [pid 1704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1703] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1704] <... futex resumed>) = 0 [pid 1703] <... futex resumed>) = 0 [pid 1704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1703] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1705] <... set_robust_list resumed>) = 0 [pid 1705] umount2("./file0", MNT_DETACH) = 0 [pid 1705] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1703] <... futex resumed>) = 0 [pid 1703] exit_group(0) = ? [pid 1704] <... futex resumed>) = ? [pid 1704] +++ exited with 0 +++ [pid 1705] +++ exited with 0 +++ [pid 1703] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1703, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1706 ./strace-static-x86_64: Process 1706 attached [pid 1706] set_robust_list(0x5555564465e0, 24) = 0 [pid 1706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1706] setpgid(0, 0) = 0 [pid 1706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1706] write(3, "1000", 4) = 4 [pid 1706] close(3) = 0 [pid 1706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1706] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1706] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1707 attached , parent_tid=[1707], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1707 [pid 1707] set_robust_list(0x7fc84e09f9e0, 24 [pid 1706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1707] <... set_robust_list resumed>) = 0 [pid 1707] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1706] <... futex resumed>) = 0 [pid 1707] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1707] <... mount resumed>) = 0 [pid 1706] <... futex resumed>) = 0 [pid 1707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1707] <... futex resumed>) = 0 [pid 1706] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1707] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1707] <... mount resumed>) = 0 [pid 1706] <... futex resumed>) = 0 [pid 1707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1707] <... futex resumed>) = 0 [pid 1706] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1707] umount2("./file0", MNT_DETACH [pid 1706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1707] <... umount2 resumed>) = 0 [pid 1706] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1706] <... futex resumed>) = 0 [pid 1707] <... futex resumed>) = 0 [pid 1706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1706] <... mmap resumed>) = 0x7fc84e05e000 [pid 1706] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1706] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1708], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1708 [pid 1706] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1706] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1708 attached [pid 1708] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1708] umount2("./file0", MNT_DETACH) = 0 [pid 1708] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1708] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1706] <... futex resumed>) = 0 [pid 1706] exit_group(0 [pid 1708] <... futex resumed>) = ? [pid 1706] <... exit_group resumed>) = ? [pid 1708] +++ exited with 0 +++ [pid 1707] <... futex resumed>) = ? [pid 1707] +++ exited with 0 +++ [pid 1706] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1709 ./strace-static-x86_64: Process 1709 attached [pid 1709] set_robust_list(0x5555564465e0, 24) = 0 [pid 1709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1709] setpgid(0, 0) = 0 [pid 1709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1709] write(3, "1000", 4) = 4 [pid 1709] close(3) = 0 [pid 1709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1709] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1709] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1710 attached , parent_tid=[1710], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1710 [pid 1710] set_robust_list(0x7fc84e09f9e0, 24 [pid 1709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1710] <... set_robust_list resumed>) = 0 [pid 1709] <... futex resumed>) = 0 [pid 1710] mkdir("./file0", 000 [pid 1709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1710] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1709] <... futex resumed>) = 0 [pid 1710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1709] <... futex resumed>) = 0 [pid 1710] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1710] <... mount resumed>) = 0 [pid 1710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1709] <... futex resumed>) = 0 [pid 1709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1710] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1709] <... futex resumed>) = 0 [pid 1709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1709] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1709] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1709] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1711 attached [pid 1710] umount2("./file0", MNT_DETACH [pid 1709] <... clone resumed>, parent_tid=[1711], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1711 [pid 1709] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1709] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1711] set_robust_list(0x7fc84e07e9e0, 24 [pid 1710] <... umount2 resumed>) = 0 [pid 1711] <... set_robust_list resumed>) = 0 [pid 1711] umount2("./file0", MNT_DETACH [pid 1710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1711] <... umount2 resumed>) = 0 [pid 1711] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1709] <... futex resumed>) = 0 [pid 1711] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1709] exit_group(0 [pid 1711] <... futex resumed>) = ? [pid 1709] <... exit_group resumed>) = ? [pid 1711] +++ exited with 0 +++ [pid 1710] <... futex resumed>) = ? [pid 1710] +++ exited with 0 +++ [pid 1709] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1709, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1712 ./strace-static-x86_64: Process 1712 attached [pid 1712] set_robust_list(0x5555564465e0, 24) = 0 [pid 1712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1712] setpgid(0, 0) = 0 [pid 1712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1712] write(3, "1000", 4) = 4 [pid 1712] close(3) = 0 [pid 1712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1712] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1712] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1713], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1713 [pid 1712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1713 attached [pid 1713] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1713] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1712] <... futex resumed>) = 0 [pid 1712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1713] <... futex resumed>) = 1 [pid 1713] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1712] <... futex resumed>) = 0 [pid 1712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1713] <... futex resumed>) = 1 [pid 1713] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1712] <... futex resumed>) = 0 [pid 1712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1712] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1712] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1714], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1714 [pid 1713] umount2("./file0", MNT_DETACH [pid 1712] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1712] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1714 attached [pid 1714] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1714] umount2("./file0", MNT_DETACH [pid 1713] <... umount2 resumed>) = 0 [pid 1714] <... umount2 resumed>) = 0 [pid 1714] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1712] <... futex resumed>) = 0 [pid 1714] <... futex resumed>) = 1 [pid 1714] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1713] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1712] exit_group(0) = ? [pid 1714] <... futex resumed>) = ? [pid 1714] +++ exited with 0 +++ [pid 1713] <... futex resumed>) = ? [pid 1713] +++ exited with 0 +++ [pid 1712] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1712, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1715 ./strace-static-x86_64: Process 1715 attached [pid 1715] set_robust_list(0x5555564465e0, 24) = 0 [pid 1715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1715] setpgid(0, 0) = 0 [pid 1715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1715] write(3, "1000", 4) = 4 [pid 1715] close(3) = 0 [pid 1715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1715] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1715] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1715] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1716 attached , parent_tid=[1716], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1716 [pid 1716] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1716] <... futex resumed>) = 0 [pid 1716] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1716] <... futex resumed>) = 0 [pid 1716] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1716] <... mount resumed>) = 0 [pid 1716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1715] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1716] <... futex resumed>) = 0 [pid 1716] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1715] <... futex resumed>) = 0 [pid 1715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1716] <... futex resumed>) = 0 [pid 1716] umount2("./file0", MNT_DETACH) = 0 [pid 1716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1716] <... futex resumed>) = 0 [pid 1716] umount2("./file0", MNT_DETACH [pid 1715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1716] <... umount2 resumed>) = 0 [pid 1716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1715] <... futex resumed>) = 0 [pid 1715] exit_group(0) = ? [pid 1716] <... futex resumed>) = ? [pid 1716] +++ exited with 0 +++ [pid 1715] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1715, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1717 ./strace-static-x86_64: Process 1717 attached [pid 1717] set_robust_list(0x5555564465e0, 24) = 0 [pid 1717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1717] setpgid(0, 0) = 0 [pid 1717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1717] write(3, "1000", 4) = 4 [pid 1717] close(3) = 0 [pid 1717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1717] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1717] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1718 attached [pid 1718] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] <... clone resumed>, parent_tid=[1718], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1718 [pid 1717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1718] <... futex resumed>) = 0 [pid 1718] mkdir("./file0", 000 [pid 1717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1718] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1718] <... futex resumed>) = 0 [pid 1718] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1718] <... futex resumed>) = 0 [pid 1717] <... futex resumed>) = 1 [pid 1718] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1718] <... futex resumed>) = 0 [pid 1718] umount2("./file0", MNT_DETACH) = 0 [pid 1717] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] <... futex resumed>) = 0 [pid 1717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1717] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1717] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1719 attached , parent_tid=[1719], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1719 [pid 1719] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1719] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1719] <... futex resumed>) = 0 [pid 1719] umount2("./file0", MNT_DETACH [pid 1717] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1719] <... umount2 resumed>) = 0 [pid 1719] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1719] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1717] exit_group(0 [pid 1718] <... futex resumed>) = ? [pid 1717] <... exit_group resumed>) = ? [pid 1718] +++ exited with 0 +++ [pid 1719] <... futex resumed>) = ? [pid 1719] +++ exited with 0 +++ [pid 1717] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1717, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1720 ./strace-static-x86_64: Process 1720 attached [pid 1720] set_robust_list(0x5555564465e0, 24) = 0 [pid 1720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1720] setpgid(0, 0) = 0 [pid 1720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1720] write(3, "1000", 4) = 4 [pid 1720] close(3) = 0 [pid 1720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1720] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1720] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1721], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1721 ./strace-static-x86_64: Process 1721 attached [pid 1721] set_robust_list(0x7fc84e09f9e0, 24 [pid 1720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1721] <... set_robust_list resumed>) = 0 [pid 1721] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1720] <... futex resumed>) = 0 [pid 1720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1721] <... futex resumed>) = 0 [pid 1720] <... futex resumed>) = 1 [pid 1721] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1721] <... mount resumed>) = 0 [pid 1721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1720] <... futex resumed>) = 0 [pid 1720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1721] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1720] <... futex resumed>) = 0 [pid 1720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1720] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1720] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1721] umount2("./file0", MNT_DETACH [pid 1720] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1722], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1722 [pid 1720] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1720] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1722 attached [pid 1722] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1722] umount2("./file0", MNT_DETACH) = 0 [pid 1722] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1720] <... futex resumed>) = 0 [pid 1722] <... futex resumed>) = 1 [pid 1722] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1721] <... umount2 resumed>) = 0 [pid 1721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1720] exit_group(0 [pid 1722] <... futex resumed>) = ? [pid 1720] <... exit_group resumed>) = ? [pid 1722] +++ exited with 0 +++ [pid 1721] <... futex resumed>) = ? [pid 1721] +++ exited with 0 +++ [pid 1720] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1720, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1723 attached , child_tidptr=0x5555564465d0) = 1723 [pid 1723] set_robust_list(0x5555564465e0, 24) = 0 [pid 1723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1723] setpgid(0, 0) = 0 [pid 1723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1723] write(3, "1000", 4) = 4 [pid 1723] close(3) = 0 [pid 1723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1723] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1723] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1724], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1724 [pid 1723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1724 attached [pid 1724] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1724] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1723] <... futex resumed>) = 0 [pid 1723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1724] <... futex resumed>) = 1 [pid 1724] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1723] <... futex resumed>) = 0 [pid 1724] <... futex resumed>) = 1 [pid 1723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1724] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1723] <... futex resumed>) = 0 [pid 1723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1724] <... mount resumed>) = 0 [pid 1724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1723] <... futex resumed>) = 0 [pid 1723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1723] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1724] umount2("./file0", MNT_DETACH [pid 1723] <... mmap resumed>) = 0x7fc84e05e000 [pid 1723] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1723] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1725 attached , parent_tid=[1725], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1725 [pid 1723] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1723] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1725] set_robust_list(0x7fc84e07e9e0, 24 [pid 1724] <... umount2 resumed>) = 0 [pid 1724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1724] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1725] <... set_robust_list resumed>) = 0 [pid 1725] umount2("./file0", MNT_DETACH) = 0 [pid 1725] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1723] <... futex resumed>) = 0 [pid 1723] exit_group(0) = ? [pid 1724] <... futex resumed>) = ? [pid 1724] +++ exited with 0 +++ [pid 1725] +++ exited with 0 +++ [pid 1723] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1723, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1726 attached , child_tidptr=0x5555564465d0) = 1726 [pid 1726] set_robust_list(0x5555564465e0, 24) = 0 [pid 1726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1726] setpgid(0, 0) = 0 [pid 1726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1726] write(3, "1000", 4) = 4 [pid 1726] close(3) = 0 [pid 1726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1726] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1726] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1727], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1727 [pid 1726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1727 attached [pid 1727] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1727] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1726] <... futex resumed>) = 0 [pid 1726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1727] <... futex resumed>) = 1 [pid 1727] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1726] <... futex resumed>) = 0 [pid 1726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1727] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1726] <... futex resumed>) = 0 [pid 1726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1726] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1727] umount2("./file0", MNT_DETACH [pid 1726] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1728], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1728 [pid 1726] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1726] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1728 attached [pid 1728] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1728] umount2("./file0", MNT_DETACH) = 0 [pid 1728] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1726] <... futex resumed>) = 0 [pid 1728] <... futex resumed>) = 1 [pid 1728] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1727] <... umount2 resumed>) = 0 [pid 1727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1727] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1726] exit_group(0) = ? [pid 1728] <... futex resumed>) = ? [pid 1727] <... futex resumed>) = ? [pid 1728] +++ exited with 0 +++ [pid 1727] +++ exited with 0 +++ [pid 1726] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1726, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1729 ./strace-static-x86_64: Process 1729 attached [pid 1729] set_robust_list(0x5555564465e0, 24) = 0 [pid 1729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1729] setpgid(0, 0) = 0 [pid 1729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1729] write(3, "1000", 4) = 4 [pid 1729] close(3) = 0 [pid 1729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1729] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1729] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1730 attached , parent_tid=[1730], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1730 [pid 1729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1730] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1730] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1729] <... futex resumed>) = 0 [pid 1729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1730] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1729] <... futex resumed>) = 0 [pid 1729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1730] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1729] <... futex resumed>) = 0 [pid 1729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1729] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1729] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1731 attached , parent_tid=[1731], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1731 [pid 1729] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1729] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1730] umount2("./file0", MNT_DETACH [pid 1731] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1731] umount2("./file0", MNT_DETACH) = 0 [pid 1731] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1731] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1729] <... futex resumed>) = 0 [pid 1730] <... umount2 resumed>) = 0 [pid 1730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1730] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1729] exit_group(0) = ? [pid 1731] <... futex resumed>) = ? [pid 1731] +++ exited with 0 +++ [pid 1730] <... futex resumed>) = ? [pid 1730] +++ exited with 0 +++ [pid 1729] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1729, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1732 attached , child_tidptr=0x5555564465d0) = 1732 [pid 1732] set_robust_list(0x5555564465e0, 24) = 0 [pid 1732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1732] setpgid(0, 0) = 0 [pid 1732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1732] write(3, "1000", 4) = 4 [pid 1732] close(3) = 0 [pid 1732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1732] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1732] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1733 attached [pid 1733] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] <... clone resumed>, parent_tid=[1733], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1733 [pid 1732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1733] <... futex resumed>) = 0 [pid 1733] mkdir("./file0", 000 [pid 1732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1733] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1733] <... futex resumed>) = 0 [pid 1733] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1733] <... futex resumed>) = 0 [pid 1733] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1733] <... futex resumed>) = 0 [pid 1732] <... futex resumed>) = 1 [pid 1733] umount2("./file0", MNT_DETACH) = 0 [pid 1732] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] <... futex resumed>) = 0 [pid 1732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1732] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1732] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1734 attached [pid 1734] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1734] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] <... clone resumed>, parent_tid=[1734], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1734 [pid 1732] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1734] <... futex resumed>) = 0 [pid 1734] umount2("./file0", MNT_DETACH) = 0 [pid 1734] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1734] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1732] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1732] exit_group(0 [pid 1733] <... futex resumed>) = ? [pid 1732] <... exit_group resumed>) = ? [pid 1733] +++ exited with 0 +++ [pid 1734] <... futex resumed>) = ? [pid 1734] +++ exited with 0 +++ [pid 1732] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1732, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1735 ./strace-static-x86_64: Process 1735 attached [pid 1735] set_robust_list(0x5555564465e0, 24) = 0 [pid 1735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1735] setpgid(0, 0) = 0 [pid 1735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1735] write(3, "1000", 4) = 4 [pid 1735] close(3) = 0 [pid 1735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1735] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1735] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1736], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1736 [pid 1735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1736 attached ) = 0 [pid 1735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1736] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1736] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1735] <... futex resumed>) = 0 [pid 1735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1736] <... futex resumed>) = 1 [pid 1736] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1735] <... futex resumed>) = 0 [pid 1735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1736] <... futex resumed>) = 1 [pid 1736] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1735] <... futex resumed>) = 0 [pid 1735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1735] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1735] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1735] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1736] umount2("./file0", MNT_DETACH [pid 1735] <... clone resumed>, parent_tid=[1737], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1737 [pid 1735] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1735] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1737 attached [pid 1737] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1737] umount2("./file0", MNT_DETACH) = 0 [pid 1737] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1735] <... futex resumed>) = 0 [pid 1736] <... umount2 resumed>) = 0 [pid 1737] <... futex resumed>) = 1 [pid 1737] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1736] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1735] exit_group(0) = ? [pid 1737] <... futex resumed>) = ? [pid 1737] +++ exited with 0 +++ [pid 1736] <... futex resumed>) = ? [pid 1736] +++ exited with 0 +++ [pid 1735] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1735, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1738 attached , child_tidptr=0x5555564465d0) = 1738 [pid 1738] set_robust_list(0x5555564465e0, 24) = 0 [pid 1738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1738] setpgid(0, 0) = 0 [pid 1738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1738] write(3, "1000", 4) = 4 [pid 1738] close(3) = 0 [pid 1738] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1738] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1738] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1739 attached , parent_tid=[1739], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1739 [pid 1739] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1739] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1739] <... futex resumed>) = 0 [pid 1739] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1739] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1739] <... futex resumed>) = 0 [pid 1739] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1739] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1739] <... futex resumed>) = 0 [pid 1739] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1739] <... mount resumed>) = 0 [pid 1739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1738] <... futex resumed>) = 0 [pid 1738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1738] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1739] umount2("./file0", MNT_DETACH [pid 1738] <... futex resumed>) = 0 [pid 1738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1738] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1738] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1740], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1740 [pid 1739] <... umount2 resumed>) = 0 [pid 1738] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1738] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1740 attached [pid 1740] set_robust_list(0x7fc84e07e9e0, 24 [pid 1739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1740] <... set_robust_list resumed>) = 0 [pid 1739] <... futex resumed>) = 0 [pid 1740] umount2("./file0", MNT_DETACH [pid 1739] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1740] <... umount2 resumed>) = 0 [pid 1740] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1738] <... futex resumed>) = 0 [pid 1738] exit_group(0) = ? [pid 1739] <... futex resumed>) = ? [pid 1740] <... futex resumed>) = ? [pid 1739] +++ exited with 0 +++ [pid 1740] +++ exited with 0 +++ [pid 1738] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1738, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1741 ./strace-static-x86_64: Process 1741 attached [pid 1741] set_robust_list(0x5555564465e0, 24) = 0 [pid 1741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1741] setpgid(0, 0) = 0 [pid 1741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1741] write(3, "1000", 4) = 4 [pid 1741] close(3) = 0 [pid 1741] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1741] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1741] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1742 attached , parent_tid=[1742], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1742 [pid 1742] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1742] <... futex resumed>) = 0 [pid 1742] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1742] <... futex resumed>) = 0 [pid 1742] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1742] <... mount resumed>) = 0 [pid 1742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1742] <... futex resumed>) = 0 [pid 1742] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1742] <... mount resumed>) = 0 [pid 1742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] <... futex resumed>) = 0 [pid 1741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1742] <... futex resumed>) = 0 [pid 1742] umount2("./file0", MNT_DETACH [pid 1741] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1742] <... umount2 resumed>) = 0 [pid 1742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1741] <... mmap resumed>) = 0x7fc84e05e000 [pid 1742] <... futex resumed>) = 0 [pid 1741] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] <... mprotect resumed>) = 0 [pid 1741] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1743 attached [pid 1743] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1743] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] <... clone resumed>, parent_tid=[1743], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1743 [pid 1741] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1741] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1743] <... futex resumed>) = 0 [pid 1743] umount2("./file0", MNT_DETACH) = 0 [pid 1743] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1741] <... futex resumed>) = 0 [pid 1743] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1741] exit_group(0 [pid 1743] <... futex resumed>) = 231 [pid 1742] <... futex resumed>) = ? [pid 1741] <... exit_group resumed>) = ? [pid 1742] +++ exited with 0 +++ [pid 1743] +++ exited with 0 +++ [pid 1741] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1741, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1744 ./strace-static-x86_64: Process 1744 attached [pid 1744] set_robust_list(0x5555564465e0, 24) = 0 [pid 1744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1744] setpgid(0, 0) = 0 [pid 1744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1744] write(3, "1000", 4) = 4 [pid 1744] close(3) = 0 [pid 1744] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1744] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1744] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1745], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1745 [pid 1744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1745 attached [pid 1745] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1745] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1744] <... futex resumed>) = 0 [pid 1744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1745] <... futex resumed>) = 1 [pid 1745] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1744] <... futex resumed>) = 0 [pid 1744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1745] <... futex resumed>) = 1 [pid 1745] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1744] <... futex resumed>) = 0 [pid 1745] umount2("./file0", MNT_DETACH [pid 1744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1744] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1744] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1744] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1745] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1746 attached [pid 1745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1744] <... clone resumed>, parent_tid=[1746], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1746 [pid 1746] set_robust_list(0x7fc84e07e9e0, 24 [pid 1745] <... futex resumed>) = 0 [pid 1746] <... set_robust_list resumed>) = 0 [pid 1744] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1746] umount2("./file0", MNT_DETACH [pid 1745] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1744] <... futex resumed>) = 0 [pid 1744] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1746] <... umount2 resumed>) = 0 [pid 1746] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1744] <... futex resumed>) = 0 [pid 1746] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1744] exit_group(0) = ? [pid 1745] <... futex resumed>) = ? [pid 1745] +++ exited with 0 +++ [pid 1746] <... futex resumed>) = ? [pid 1746] +++ exited with 0 +++ [pid 1744] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1744, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1747 ./strace-static-x86_64: Process 1747 attached [pid 1747] set_robust_list(0x5555564465e0, 24) = 0 [pid 1747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1747] setpgid(0, 0) = 0 [pid 1747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1747] write(3, "1000", 4) = 4 [pid 1747] close(3) = 0 [pid 1747] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1747] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1747] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1748 attached , parent_tid=[1748], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1748 [pid 1748] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1748] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1747] <... futex resumed>) = 1 [pid 1748] <... futex resumed>) = 0 [pid 1748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1748] <... futex resumed>) = 0 [pid 1748] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1748] <... mount resumed>) = 0 [pid 1748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1748] <... futex resumed>) = 0 [pid 1748] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1748] <... mount resumed>) = 0 [pid 1748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1747] <... futex resumed>) = 0 [pid 1747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1748] <... futex resumed>) = 0 [pid 1748] umount2("./file0", MNT_DETACH) = 0 [pid 1748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1748] <... futex resumed>) = 0 [pid 1748] umount2("./file0", MNT_DETACH [pid 1747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1748] <... umount2 resumed>) = 0 [pid 1748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1748] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1747] exit_group(0) = ? [pid 1748] <... futex resumed>) = ? [pid 1748] +++ exited with 0 +++ [pid 1747] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1747, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1749 ./strace-static-x86_64: Process 1749 attached [pid 1749] set_robust_list(0x5555564465e0, 24) = 0 [pid 1749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1749] setpgid(0, 0) = 0 [pid 1749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1749] write(3, "1000", 4) = 4 [pid 1749] close(3) = 0 [pid 1749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1749] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1749] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1749] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1750 attached [pid 1750] set_robust_list(0x7fc84e09f9e0, 24 [pid 1749] <... clone resumed>, parent_tid=[1750], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1750 [pid 1749] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1749] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1750] <... set_robust_list resumed>) = 0 [pid 1750] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1750] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1749] <... futex resumed>) = 0 [pid 1750] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1749] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1749] <... futex resumed>) = 0 [pid 1750] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1749] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1750] <... mount resumed>) = 0 [pid 1750] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1749] <... futex resumed>) = 0 [pid 1749] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1749] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1750] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1750] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1749] <... futex resumed>) = 0 [pid 1749] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1749] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1749] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1749] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1749] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1751 attached [pid 1750] umount2("./file0", MNT_DETACH [pid 1751] set_robust_list(0x7fc84e07e9e0, 24 [pid 1749] <... clone resumed>, parent_tid=[1751], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1751 [pid 1751] <... set_robust_list resumed>) = 0 [pid 1749] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1751] umount2("./file0", MNT_DETACH [pid 1749] <... futex resumed>) = 0 [pid 1749] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1751] <... umount2 resumed>) = 0 [pid 1751] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1749] <... futex resumed>) = 0 [pid 1751] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1750] <... umount2 resumed>) = 0 [pid 1750] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1750] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1749] exit_group(0 [pid 1751] <... futex resumed>) = ? [pid 1750] <... futex resumed>) = ? [pid 1749] <... exit_group resumed>) = ? [pid 1751] +++ exited with 0 +++ [pid 1750] +++ exited with 0 +++ [pid 1749] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1749, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1752 ./strace-static-x86_64: Process 1752 attached [pid 1752] set_robust_list(0x5555564465e0, 24) = 0 [pid 1752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1752] setpgid(0, 0) = 0 [pid 1752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1752] write(3, "1000", 4) = 4 [pid 1752] close(3) = 0 [pid 1752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1752] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1752] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1753 attached [pid 1753] set_robust_list(0x7fc84e09f9e0, 24 [pid 1752] <... clone resumed>, parent_tid=[1753], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1753 [pid 1753] <... set_robust_list resumed>) = 0 [pid 1752] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1753] mkdir("./file0", 000 [pid 1752] <... futex resumed>) = 0 [pid 1752] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1753] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1753] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1752] <... futex resumed>) = 0 [pid 1752] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1752] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1753] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1753] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1752] <... futex resumed>) = 0 [pid 1752] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1752] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1753] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1753] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1752] <... futex resumed>) = 0 [pid 1752] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1752] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1752] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1752] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1753] umount2("./file0", MNT_DETACH [pid 1752] <... clone resumed>, parent_tid=[1754], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1754 [pid 1752] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1754 attached ) = 0 [pid 1754] set_robust_list(0x7fc84e07e9e0, 24 [pid 1752] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1754] <... set_robust_list resumed>) = 0 [pid 1754] umount2("./file0", MNT_DETACH [pid 1753] <... umount2 resumed>) = 0 [pid 1754] <... umount2 resumed>) = 0 [pid 1754] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1752] <... futex resumed>) = 0 [pid 1754] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1753] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1753] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1752] exit_group(0) = ? [pid 1753] <... futex resumed>) = ? [pid 1754] <... futex resumed>) = ? [pid 1753] +++ exited with 0 +++ [pid 1754] +++ exited with 0 +++ [pid 1752] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1752, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1755 ./strace-static-x86_64: Process 1755 attached [pid 1755] set_robust_list(0x5555564465e0, 24) = 0 [pid 1755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1755] setpgid(0, 0) = 0 [pid 1755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1755] write(3, "1000", 4) = 4 [pid 1755] close(3) = 0 [pid 1755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1755] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1755] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1755] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1756 attached , parent_tid=[1756], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1756 [pid 1755] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1755] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1756] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1756] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1756] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1755] <... futex resumed>) = 0 [pid 1756] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1755] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1755] <... futex resumed>) = 0 [pid 1756] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1755] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1756] <... mount resumed>) = 0 [pid 1756] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1755] <... futex resumed>) = 0 [pid 1756] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1755] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1756] <... futex resumed>) = 0 [pid 1755] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1756] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1756] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1755] <... futex resumed>) = 0 [pid 1755] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1755] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1755] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1755] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1755] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1757], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1757 [pid 1755] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1755] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1756] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1757 attached [pid 1757] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1757] umount2("./file0", MNT_DETACH [pid 1756] <... umount2 resumed>) = 0 [pid 1756] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1757] <... umount2 resumed>) = 0 [pid 1757] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1755] <... futex resumed>) = 0 [pid 1755] exit_group(0) = ? [pid 1757] <... futex resumed>) = ? [pid 1756] +++ exited with 0 +++ [pid 1757] +++ exited with 0 +++ [pid 1755] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1755, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1758 attached , child_tidptr=0x5555564465d0) = 1758 [pid 1758] set_robust_list(0x5555564465e0, 24) = 0 [pid 1758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1758] setpgid(0, 0) = 0 [pid 1758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1758] write(3, "1000", 4) = 4 [pid 1758] close(3) = 0 [pid 1758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1758] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1758] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1759], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1759 [pid 1758] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1759 attached [pid 1759] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1759] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1759] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1758] <... futex resumed>) = 0 [pid 1759] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1758] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1759] <... mount resumed>) = 0 [pid 1759] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1758] <... futex resumed>) = 0 [pid 1758] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1759] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1759] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1758] <... futex resumed>) = 0 [pid 1758] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1758] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1758] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1760], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1760 [pid 1758] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1758] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1760 attached [pid 1760] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1760] umount2("./file0", MNT_DETACH [pid 1759] umount2("./file0", MNT_DETACH [pid 1760] <... umount2 resumed>) = 0 [pid 1759] <... umount2 resumed>) = 0 [pid 1760] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1758] <... futex resumed>) = 0 [pid 1760] <... futex resumed>) = 1 [pid 1760] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1759] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1759] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1758] exit_group(0) = ? [pid 1759] <... futex resumed>) = ? [pid 1759] +++ exited with 0 +++ [pid 1760] <... futex resumed>) = ? [pid 1760] +++ exited with 0 +++ [pid 1758] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1758, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1761 attached , child_tidptr=0x5555564465d0) = 1761 [pid 1761] set_robust_list(0x5555564465e0, 24) = 0 [pid 1761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1761] setpgid(0, 0) = 0 [pid 1761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1761] write(3, "1000", 4) = 4 [pid 1761] close(3) = 0 [pid 1761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1761] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1761] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1761] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1762 attached , parent_tid=[1762], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1762 [pid 1761] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1761] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1762] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1762] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1762] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1762] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1761] <... futex resumed>) = 0 [pid 1761] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1761] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1762] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1762] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1762] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1761] <... futex resumed>) = 0 [pid 1762] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1761] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1762] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1761] <... futex resumed>) = 0 [pid 1762] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1761] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1762] <... mount resumed>) = 0 [pid 1762] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1761] <... futex resumed>) = 0 [pid 1762] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1761] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1762] umount2("./file0", MNT_DETACH [pid 1761] <... futex resumed>) = 0 [pid 1761] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1761] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1761] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1761] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1763], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1763 [pid 1761] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1762] <... umount2 resumed>) = 0 [pid 1761] <... futex resumed>) = 0 [pid 1761] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1763 attached [pid 1762] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1762] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1763] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1763] umount2("./file0", MNT_DETACH) = 0 [pid 1763] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1761] <... futex resumed>) = 0 [pid 1763] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1761] exit_group(0 [pid 1763] <... futex resumed>) = 231 [pid 1761] <... exit_group resumed>) = ? [pid 1763] +++ exited with 0 +++ [pid 1762] <... futex resumed>) = ? [pid 1762] +++ exited with 0 +++ [pid 1761] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1761, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1764 ./strace-static-x86_64: Process 1764 attached [pid 1764] set_robust_list(0x5555564465e0, 24) = 0 [pid 1764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1764] setpgid(0, 0) = 0 [pid 1764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1764] write(3, "1000", 4) = 4 [pid 1764] close(3) = 0 [pid 1764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1764] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1764] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1765], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1765 [pid 1764] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1764] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1765 attached [pid 1765] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1765] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1765] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1764] <... futex resumed>) = 0 [pid 1764] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1764] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1765] <... futex resumed>) = 1 [pid 1765] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1765] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1764] <... futex resumed>) = 0 [pid 1764] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1764] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1765] <... futex resumed>) = 1 [pid 1765] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1765] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1764] <... futex resumed>) = 0 [pid 1765] <... futex resumed>) = 1 [pid 1764] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1765] umount2("./file0", MNT_DETACH [pid 1764] <... futex resumed>) = 0 [pid 1764] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1765] <... umount2 resumed>) = 0 [pid 1764] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1765] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1764] <... mprotect resumed>) = 0 [pid 1765] <... futex resumed>) = 0 [pid 1765] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1764] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1766 attached , parent_tid=[1766], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1766 [pid 1766] set_robust_list(0x7fc84e07e9e0, 24 [pid 1764] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1764] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1766] <... set_robust_list resumed>) = 0 [pid 1766] umount2("./file0", MNT_DETACH) = 0 [pid 1766] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1764] <... futex resumed>) = 0 [pid 1766] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1764] exit_group(0 [pid 1766] <... futex resumed>) = ? [pid 1765] <... futex resumed>) = ? [pid 1764] <... exit_group resumed>) = ? [pid 1765] +++ exited with 0 +++ [pid 1766] +++ exited with 0 +++ [pid 1764] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1764, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1767 ./strace-static-x86_64: Process 1767 attached [pid 1767] set_robust_list(0x5555564465e0, 24) = 0 [pid 1767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1767] setpgid(0, 0) = 0 [pid 1767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1767] write(3, "1000", 4) = 4 [pid 1767] close(3) = 0 [pid 1767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1767] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1767] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1767] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1768 attached [pid 1768] set_robust_list(0x7fc84e09f9e0, 24 [pid 1767] <... clone resumed>, parent_tid=[1768], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1768 [pid 1767] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1767] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1768] <... set_robust_list resumed>) = 0 [pid 1768] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1768] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1767] <... futex resumed>) = 0 [pid 1767] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1767] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1768] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1768] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1767] <... futex resumed>) = 0 [pid 1767] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1767] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1768] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1768] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1767] <... futex resumed>) = 0 [pid 1767] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1767] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1767] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1767] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1767] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1769 attached , parent_tid=[1769], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1769 [pid 1769] set_robust_list(0x7fc84e07e9e0, 24 [pid 1767] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1769] <... set_robust_list resumed>) = 0 [pid 1767] <... futex resumed>) = 0 [pid 1769] umount2("./file0", MNT_DETACH [pid 1767] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1768] umount2("./file0", MNT_DETACH) = 0 [pid 1768] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1769] <... umount2 resumed>) = 0 [pid 1768] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1769] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1767] <... futex resumed>) = 0 [pid 1769] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1767] exit_group(0) = ? [pid 1769] <... futex resumed>) = ? [pid 1769] +++ exited with 0 +++ [pid 1768] <... futex resumed>) = ? [pid 1768] +++ exited with 0 +++ [pid 1767] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1767, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1770 ./strace-static-x86_64: Process 1770 attached [pid 1770] set_robust_list(0x5555564465e0, 24) = 0 [pid 1770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1770] setpgid(0, 0) = 0 [pid 1770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1770] write(3, "1000", 4) = 4 [pid 1770] close(3) = 0 [pid 1770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1770] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1770] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1771], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1771 ./strace-static-x86_64: Process 1771 attached [pid 1770] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1771] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1770] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1771] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1771] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1770] <... futex resumed>) = 0 [pid 1771] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1770] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1771] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1770] <... futex resumed>) = 0 [pid 1771] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1770] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1771] <... mount resumed>) = 0 [pid 1771] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1770] <... futex resumed>) = 0 [pid 1771] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1770] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1770] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1771] <... mount resumed>) = 0 [pid 1771] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1770] <... futex resumed>) = 0 [pid 1771] umount2("./file0", MNT_DETACH [pid 1770] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1770] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1771] <... umount2 resumed>) = 0 [pid 1770] <... mmap resumed>) = 0x7fc84e05e000 [pid 1771] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1770] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1771] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1770] <... mprotect resumed>) = 0 [pid 1770] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1772 attached [pid 1772] set_robust_list(0x7fc84e07e9e0, 24 [pid 1770] <... clone resumed>, parent_tid=[1772], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1772 [pid 1772] <... set_robust_list resumed>) = 0 [pid 1772] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1770] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1772] <... futex resumed>) = 0 [pid 1772] umount2("./file0", MNT_DETACH) = 0 [pid 1772] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1770] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1772] <... futex resumed>) = 0 [pid 1772] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1770] exit_group(0 [pid 1771] <... futex resumed>) = ? [pid 1770] <... exit_group resumed>) = ? [pid 1772] <... futex resumed>) = ? [pid 1772] +++ exited with 0 +++ [pid 1771] +++ exited with 0 +++ [pid 1770] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1770, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1773 ./strace-static-x86_64: Process 1773 attached [pid 1773] set_robust_list(0x5555564465e0, 24) = 0 [pid 1773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1773] setpgid(0, 0) = 0 [pid 1773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1773] write(3, "1000", 4) = 4 [pid 1773] close(3) = 0 [pid 1773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1773] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1773] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1773] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1774 attached , parent_tid=[1774], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1774 [pid 1774] set_robust_list(0x7fc84e09f9e0, 24 [pid 1773] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1774] <... set_robust_list resumed>) = 0 [pid 1773] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1774] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1774] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1773] <... futex resumed>) = 0 [pid 1773] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1774] <... futex resumed>) = 1 [pid 1773] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1774] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1774] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1773] <... futex resumed>) = 0 [pid 1774] <... futex resumed>) = 1 [pid 1773] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1774] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1773] <... futex resumed>) = 0 [pid 1773] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1774] <... mount resumed>) = 0 [pid 1774] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1773] <... futex resumed>) = 0 [pid 1773] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1774] umount2("./file0", MNT_DETACH [pid 1773] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1773] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1773] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1773] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1774] <... umount2 resumed>) = 0 [pid 1774] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1773] <... clone resumed>, parent_tid=[1775], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1775 [pid 1773] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1773] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1775 attached [pid 1775] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1775] umount2("./file0", MNT_DETACH [pid 1774] <... futex resumed>) = 0 [pid 1774] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1775] <... umount2 resumed>) = 0 [pid 1775] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1773] <... futex resumed>) = 0 [pid 1773] exit_group(0) = ? [pid 1775] <... futex resumed>) = ? [pid 1775] +++ exited with 0 +++ [pid 1774] <... futex resumed>) = ? [pid 1774] +++ exited with 0 +++ [pid 1773] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1773, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1776 ./strace-static-x86_64: Process 1776 attached [pid 1776] set_robust_list(0x5555564465e0, 24) = 0 [pid 1776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1776] setpgid(0, 0) = 0 [pid 1776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1776] write(3, "1000", 4) = 4 [pid 1776] close(3) = 0 [pid 1776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1776] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1776] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1777 attached , parent_tid=[1777], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1777 [pid 1776] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1776] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1777] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1777] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1777] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1776] <... futex resumed>) = 0 [pid 1776] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1776] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1777] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1777] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1776] <... futex resumed>) = 0 [pid 1776] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1776] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1777] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1777] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1776] <... futex resumed>) = 0 [pid 1776] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1776] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1777] umount2("./file0", MNT_DETACH [pid 1776] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1776] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1777] <... umount2 resumed>) = 0 [pid 1776] <... clone resumed>, parent_tid=[1778], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1778 [pid 1777] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1776] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1778 attached [pid 1778] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1778] umount2("./file0", MNT_DETACH [pid 1777] <... futex resumed>) = 0 [pid 1776] <... futex resumed>) = 0 [pid 1776] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1778] <... umount2 resumed>) = 0 [pid 1777] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1778] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1776] <... futex resumed>) = 0 [pid 1776] exit_group(0) = ? [pid 1777] <... futex resumed>) = ? [pid 1777] +++ exited with 0 +++ [pid 1778] +++ exited with 0 +++ [pid 1776] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1776, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1779 ./strace-static-x86_64: Process 1779 attached [pid 1779] set_robust_list(0x5555564465e0, 24) = 0 [pid 1779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1779] setpgid(0, 0) = 0 [pid 1779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1779] write(3, "1000", 4) = 4 [pid 1779] close(3) = 0 [pid 1779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1779] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1779] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1779] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1780 attached [pid 1780] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1780] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1779] <... clone resumed>, parent_tid=[1780], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1780 [pid 1779] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1780] <... futex resumed>) = 0 [pid 1780] mkdir("./file0", 000 [pid 1779] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1780] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1780] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1779] <... futex resumed>) = 0 [pid 1780] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1779] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1779] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1780] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1780] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1780] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1779] <... futex resumed>) = 0 [pid 1779] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1779] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1780] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1780] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1779] <... futex resumed>) = 0 [pid 1779] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1779] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1779] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1779] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1779] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1780] umount2("./file0", MNT_DETACH [pid 1779] <... clone resumed>, parent_tid=[1781], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1781 [pid 1779] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1779] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1781 attached [pid 1781] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1781] umount2("./file0", MNT_DETACH [pid 1780] <... umount2 resumed>) = 0 [pid 1780] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1780] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1781] <... umount2 resumed>) = 0 [pid 1781] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1779] <... futex resumed>) = 0 [pid 1779] exit_group(0) = ? [pid 1781] <... futex resumed>) = ? [pid 1780] <... futex resumed>) = ? [pid 1781] +++ exited with 0 +++ [pid 1780] +++ exited with 0 +++ [pid 1779] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1779, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1782 ./strace-static-x86_64: Process 1782 attached [pid 1782] set_robust_list(0x5555564465e0, 24) = 0 [pid 1782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1782] setpgid(0, 0) = 0 [pid 1782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1782] write(3, "1000", 4) = 4 [pid 1782] close(3) = 0 [pid 1782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1782] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1782] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1783 attached , parent_tid=[1783], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1783 [pid 1783] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1783] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1782] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1783] <... futex resumed>) = 0 [pid 1782] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1783] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1783] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1782] <... futex resumed>) = 0 [pid 1782] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1782] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1783] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1783] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1782] <... futex resumed>) = 0 [pid 1782] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1782] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1783] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1783] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1782] <... futex resumed>) = 0 [pid 1782] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1782] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1782] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1782] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1784], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1784 [pid 1783] umount2("./file0", MNT_DETACH [pid 1782] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1782] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1784 attached [pid 1784] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1784] umount2("./file0", MNT_DETACH) = 0 [pid 1784] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1782] <... futex resumed>) = 0 [pid 1784] <... futex resumed>) = 1 [pid 1784] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1783] <... umount2 resumed>) = 0 [pid 1783] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1783] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1782] exit_group(0) = ? [pid 1783] <... futex resumed>) = ? [pid 1783] +++ exited with 0 +++ [pid 1784] <... futex resumed>) = ? [pid 1784] +++ exited with 0 +++ [pid 1782] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1782, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1785 ./strace-static-x86_64: Process 1785 attached [pid 1785] set_robust_list(0x5555564465e0, 24) = 0 [pid 1785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1785] setpgid(0, 0) = 0 [pid 1785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1785] write(3, "1000", 4) = 4 [pid 1785] close(3) = 0 [pid 1785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1785] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1785] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1786], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1786 [pid 1785] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1786 attached [pid 1786] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1786] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1786] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1785] <... futex resumed>) = 0 [pid 1785] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1786] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1786] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1785] <... futex resumed>) = 0 [pid 1786] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1785] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1786] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1786] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1785] <... futex resumed>) = 0 [pid 1785] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1785] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1785] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1786] umount2("./file0", MNT_DETACH [pid 1785] <... clone resumed>, parent_tid=[1787], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1787 [pid 1785] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1785] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1787 attached [pid 1787] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1787] umount2("./file0", MNT_DETACH [pid 1786] <... umount2 resumed>) = 0 [pid 1786] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1786] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1787] <... umount2 resumed>) = 0 [pid 1787] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1785] <... futex resumed>) = 0 [pid 1785] exit_group(0) = ? [pid 1787] <... futex resumed>) = ? [pid 1786] <... futex resumed>) = ? [pid 1787] +++ exited with 0 +++ [pid 1786] +++ exited with 0 +++ [pid 1785] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1785, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1788 attached , child_tidptr=0x5555564465d0) = 1788 [pid 1788] set_robust_list(0x5555564465e0, 24) = 0 [pid 1788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1788] setpgid(0, 0) = 0 [pid 1788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1788] write(3, "1000", 4) = 4 [pid 1788] close(3) = 0 [pid 1788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1788] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1788] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1789 attached [pid 1789] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1789] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1788] <... clone resumed>, parent_tid=[1789], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1789 [pid 1788] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1789] <... futex resumed>) = 0 [pid 1789] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1788] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1789] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1789] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1788] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1788] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1789] <... futex resumed>) = 0 [pid 1789] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1788] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1789] <... mount resumed>) = 0 [pid 1789] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1788] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1789] <... futex resumed>) = 0 [pid 1789] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1788] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1789] <... futex resumed>) = 0 [pid 1788] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1789] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1789] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1788] <... futex resumed>) = 0 [pid 1788] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1788] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1788] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1788] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1789] umount2("./file0", MNT_DETACH [pid 1788] <... clone resumed>, parent_tid=[1790], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1790 [pid 1788] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1788] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1790 attached [pid 1789] <... umount2 resumed>) = 0 [pid 1790] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1790] umount2("./file0", MNT_DETACH [pid 1789] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1789] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1790] <... umount2 resumed>) = 0 [pid 1790] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1788] <... futex resumed>) = 0 [pid 1788] exit_group(0) = ? [pid 1789] <... futex resumed>) = ? [pid 1790] <... futex resumed>) = ? [pid 1790] +++ exited with 0 +++ [pid 1789] +++ exited with 0 +++ [pid 1788] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1788, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1791 attached , child_tidptr=0x5555564465d0) = 1791 [pid 1791] set_robust_list(0x5555564465e0, 24) = 0 [pid 1791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1791] setpgid(0, 0) = 0 [pid 1791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1791] write(3, "1000", 4) = 4 [pid 1791] close(3) = 0 [pid 1791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1791] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1791] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1792 attached , parent_tid=[1792], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1792 [pid 1791] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1792] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1792] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1792] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1791] <... futex resumed>) = 0 [pid 1791] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1792] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1792] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1791] <... futex resumed>) = 0 [pid 1791] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1792] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1792] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1791] <... futex resumed>) = 0 [pid 1792] umount2("./file0", MNT_DETACH [pid 1791] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1792] <... umount2 resumed>) = 0 [pid 1791] <... mmap resumed>) = 0x7fc84e05e000 [pid 1792] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1791] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1792] <... futex resumed>) = 0 [pid 1791] <... mprotect resumed>) = 0 [pid 1791] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1792] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1791] <... clone resumed>, parent_tid=[1793], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1793 [pid 1791] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1791] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1793 attached [pid 1793] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1793] umount2("./file0", MNT_DETACH) = 0 [pid 1793] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1791] <... futex resumed>) = 0 [pid 1793] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1791] exit_group(0 [pid 1793] <... futex resumed>) = ? [pid 1791] <... exit_group resumed>) = ? [pid 1793] +++ exited with 0 +++ [pid 1792] <... futex resumed>) = ? [pid 1792] +++ exited with 0 +++ [pid 1791] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1791, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1794 ./strace-static-x86_64: Process 1794 attached [pid 1794] set_robust_list(0x5555564465e0, 24) = 0 [pid 1794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1794] setpgid(0, 0) = 0 [pid 1794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1794] write(3, "1000", 4) = 4 [pid 1794] close(3) = 0 [pid 1794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1794] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1794] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1795 attached , parent_tid=[1795], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1795 [pid 1794] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1795] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1795] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1795] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1794] <... futex resumed>) = 0 [pid 1794] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1795] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1795] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1794] <... futex resumed>) = 0 [pid 1794] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1795] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1795] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1794] <... futex resumed>) = 0 [pid 1795] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1794] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1794] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1794] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1795] umount2("./file0", MNT_DETACH [pid 1794] <... clone resumed>, parent_tid=[1796], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1796 [pid 1794] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1794] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1796 attached [pid 1796] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1796] umount2("./file0", MNT_DETACH [pid 1795] <... umount2 resumed>) = 0 [pid 1795] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1796] <... umount2 resumed>) = 0 [pid 1795] <... futex resumed>) = 0 [pid 1796] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1794] <... futex resumed>) = 0 [pid 1794] exit_group(0) = ? [pid 1796] <... futex resumed>) = ? [pid 1796] +++ exited with 0 +++ [pid 1795] +++ exited with 0 +++ [pid 1794] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1794, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1797 ./strace-static-x86_64: Process 1797 attached [pid 1797] set_robust_list(0x5555564465e0, 24) = 0 [pid 1797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1797] setpgid(0, 0) = 0 [pid 1797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1797] write(3, "1000", 4) = 4 [pid 1797] close(3) = 0 [pid 1797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1797] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1797] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1797] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1798 attached , parent_tid=[1798], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1798 [pid 1798] set_robust_list(0x7fc84e09f9e0, 24 [pid 1797] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1797] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1798] <... set_robust_list resumed>) = 0 [pid 1798] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1798] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1798] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1797] <... futex resumed>) = 0 [pid 1797] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1798] <... futex resumed>) = 0 [pid 1797] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1798] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1798] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1797] <... futex resumed>) = 0 [pid 1797] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1797] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1798] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1798] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1797] <... futex resumed>) = 0 [pid 1798] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1797] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1797] <... futex resumed>) = 0 [pid 1798] umount2("./file0", MNT_DETACH [pid 1797] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1798] <... umount2 resumed>) = 0 [pid 1797] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1798] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1797] <... mmap resumed>) = 0x7fc84e05e000 [pid 1798] <... futex resumed>) = 0 [pid 1797] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1798] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1797] <... mprotect resumed>) = 0 [pid 1797] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1799 attached , parent_tid=[1799], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1799 [pid 1799] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1799] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1797] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1799] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1799] umount2("./file0", MNT_DETACH) = 0 [pid 1797] <... futex resumed>) = 0 [pid 1799] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1799] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1797] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1797] exit_group(0 [pid 1798] <... futex resumed>) = 230 [pid 1797] <... exit_group resumed>) = ? [pid 1799] <... futex resumed>) = ? [pid 1799] +++ exited with 0 +++ [pid 1798] +++ exited with 0 +++ [pid 1797] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1797, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1800 attached , child_tidptr=0x5555564465d0) = 1800 [pid 1800] set_robust_list(0x5555564465e0, 24) = 0 [pid 1800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1800] setpgid(0, 0) = 0 [pid 1800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1800] write(3, "1000", 4) = 4 [pid 1800] close(3) = 0 [pid 1800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1800] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1800] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1801 attached , parent_tid=[1801], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1801 [pid 1801] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1801] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1800] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1801] <... futex resumed>) = 0 [pid 1800] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1801] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1801] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1800] <... futex resumed>) = 0 [pid 1801] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1800] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1800] <... futex resumed>) = 0 [pid 1801] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1800] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1801] <... mount resumed>) = 0 [pid 1801] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1800] <... futex resumed>) = 0 [pid 1801] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1800] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1800] <... futex resumed>) = 0 [pid 1801] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1800] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1801] <... mount resumed>) = 0 [pid 1801] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1800] <... futex resumed>) = 0 [pid 1800] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1800] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1800] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1800] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1801] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1802 attached ) = 0 [pid 1800] <... clone resumed>, parent_tid=[1802], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1802 [pid 1802] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1802] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1801] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1800] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1801] <... futex resumed>) = 0 [pid 1800] <... futex resumed>) = 1 [pid 1802] <... futex resumed>) = 0 [pid 1802] umount2("./file0", MNT_DETACH [pid 1800] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1801] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1802] <... umount2 resumed>) = 0 [pid 1802] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1800] <... futex resumed>) = 0 [pid 1800] exit_group(0) = ? [pid 1802] +++ exited with 0 +++ [pid 1801] <... futex resumed>) = ? [pid 1801] +++ exited with 0 +++ [pid 1800] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1800, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1804 ./strace-static-x86_64: Process 1804 attached [pid 1804] set_robust_list(0x5555564465e0, 24) = 0 [pid 1804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1804] setpgid(0, 0) = 0 [pid 1804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1804] write(3, "1000", 4) = 4 [pid 1804] close(3) = 0 [pid 1804] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1804] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1804] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1805], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1805 [pid 1804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1805 attached [pid 1805] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1805] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1804] <... futex resumed>) = 0 [pid 1804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1805] <... futex resumed>) = 1 [pid 1805] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1804] <... futex resumed>) = 0 [pid 1804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1805] <... futex resumed>) = 1 [pid 1805] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1804] <... futex resumed>) = 0 [pid 1804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1804] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1804] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1806], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1806 [pid 1804] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1804] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1805] <... futex resumed>) = 1 [pid 1805] umount2("./file0", MNT_DETACH) = 0 ./strace-static-x86_64: Process 1806 attached [pid 1805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1806] set_robust_list(0x7fc84e07e9e0, 24 [pid 1805] <... futex resumed>) = 0 [pid 1806] <... set_robust_list resumed>) = 0 [pid 1805] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1806] umount2("./file0", MNT_DETACH) = 0 [pid 1806] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1804] <... futex resumed>) = 0 [pid 1804] exit_group(0) = ? [pid 1805] <... futex resumed>) = ? [pid 1805] +++ exited with 0 +++ [pid 1806] +++ exited with 0 +++ [pid 1804] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1804, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1807 attached , child_tidptr=0x5555564465d0) = 1807 [pid 1807] set_robust_list(0x5555564465e0, 24) = 0 [pid 1807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1807] setpgid(0, 0) = 0 [pid 1807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1807] write(3, "1000", 4) = 4 [pid 1807] close(3) = 0 [pid 1807] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1807] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1807] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1807] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1808 attached , parent_tid=[1808], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1808 [pid 1808] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1808] <... futex resumed>) = 0 [pid 1807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1808] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1807] <... futex resumed>) = 0 [pid 1807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1808] <... futex resumed>) = 0 [pid 1808] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1807] <... futex resumed>) = 0 [pid 1807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1808] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1807] <... futex resumed>) = 0 [pid 1807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1807] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1807] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1807] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1807] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1809], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1809 [pid 1807] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1807] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1808] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1809 attached [pid 1809] set_robust_list(0x7fc84e07e9e0, 24 [pid 1808] <... umount2 resumed>) = 0 [pid 1808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1809] <... set_robust_list resumed>) = 0 [pid 1809] umount2("./file0", MNT_DETACH) = 0 [pid 1809] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1807] <... futex resumed>) = 0 [pid 1807] exit_group(0) = ? [pid 1808] <... futex resumed>) = ? [pid 1808] +++ exited with 0 +++ [pid 1809] +++ exited with 0 +++ [pid 1807] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1807, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1810 ./strace-static-x86_64: Process 1810 attached [pid 1810] set_robust_list(0x5555564465e0, 24) = 0 [pid 1810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1810] setpgid(0, 0) = 0 [pid 1810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1810] write(3, "1000", 4) = 4 [pid 1810] close(3) = 0 [pid 1810] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1810] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1810] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1811 attached , parent_tid=[1811], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1811 [pid 1810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1811] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1811] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1810] <... futex resumed>) = 0 [pid 1810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1811] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1810] <... futex resumed>) = 0 [pid 1810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1811] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1810] <... futex resumed>) = 0 [pid 1810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1810] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1810] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1811] umount2("./file0", MNT_DETACH [pid 1810] <... clone resumed>, parent_tid=[1812], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1812 [pid 1810] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1810] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1812 attached [pid 1812] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1812] umount2("./file0", MNT_DETACH) = 0 [pid 1812] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1810] <... futex resumed>) = 0 [pid 1811] <... umount2 resumed>) = 0 [pid 1812] <... futex resumed>) = 1 [pid 1812] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1811] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1810] exit_group(0 [pid 1812] <... futex resumed>) = 231 [pid 1810] <... exit_group resumed>) = ? [pid 1811] <... futex resumed>) = ? [pid 1811] +++ exited with 0 +++ [pid 1812] +++ exited with 0 +++ [pid 1810] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1810, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1813 attached , child_tidptr=0x5555564465d0) = 1813 [pid 1813] set_robust_list(0x5555564465e0, 24) = 0 [pid 1813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1813] setpgid(0, 0) = 0 [pid 1813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1813] write(3, "1000", 4) = 4 [pid 1813] close(3) = 0 [pid 1813] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1813] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1813] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1814 attached , parent_tid=[1814], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1814 [pid 1813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1814] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1814] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1814] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1813] <... futex resumed>) = 0 [pid 1813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1814] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1813] <... futex resumed>) = 0 [pid 1813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1814] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1813] <... futex resumed>) = 0 [pid 1813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1813] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1814] umount2("./file0", MNT_DETACH [pid 1813] <... mprotect resumed>) = 0 [pid 1813] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1815], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1815 [pid 1813] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1813] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1815 attached [pid 1815] set_robust_list(0x7fc84e07e9e0, 24 [pid 1814] <... umount2 resumed>) = 0 [pid 1815] <... set_robust_list resumed>) = 0 [pid 1814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1815] umount2("./file0", MNT_DETACH [pid 1814] <... futex resumed>) = 0 [pid 1814] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1815] <... umount2 resumed>) = 0 [pid 1815] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1813] <... futex resumed>) = 0 [pid 1813] exit_group(0) = ? [pid 1814] <... futex resumed>) = ? [pid 1815] <... futex resumed>) = ? [pid 1814] +++ exited with 0 +++ [pid 1815] +++ exited with 0 +++ [pid 1813] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1813, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1816 ./strace-static-x86_64: Process 1816 attached [pid 1816] set_robust_list(0x5555564465e0, 24) = 0 [pid 1816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1816] setpgid(0, 0) = 0 [pid 1816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1816] write(3, "1000", 4) = 4 [pid 1816] close(3) = 0 [pid 1816] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1816] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1816] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1817 attached , parent_tid=[1817], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1817 [pid 1816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1817] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1817] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1816] <... futex resumed>) = 0 [pid 1816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1817] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1816] <... futex resumed>) = 0 [pid 1816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1817] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1816] <... futex resumed>) = 0 [pid 1816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1816] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1817] umount2("./file0", MNT_DETACH [pid 1816] <... mprotect resumed>) = 0 [pid 1816] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1817] <... umount2 resumed>) = 0 [pid 1816] <... clone resumed>, parent_tid=[1818], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1818 [pid 1816] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1816] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1818 attached [pid 1817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1817] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1818] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1818] umount2("./file0", MNT_DETACH) = 0 [pid 1818] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1816] <... futex resumed>) = 0 [pid 1816] exit_group(0) = ? [pid 1817] <... futex resumed>) = ? [pid 1818] +++ exited with 0 +++ [pid 1817] +++ exited with 0 +++ [pid 1816] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1816, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1819 ./strace-static-x86_64: Process 1819 attached [pid 1819] set_robust_list(0x5555564465e0, 24) = 0 [pid 1819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1819] setpgid(0, 0) = 0 [pid 1819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1819] write(3, "1000", 4) = 4 [pid 1819] close(3) = 0 [pid 1819] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1819] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1819] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1820 attached [pid 1820] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1819] <... clone resumed>, parent_tid=[1820], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1820 [pid 1819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1820] <... futex resumed>) = 0 [pid 1819] <... futex resumed>) = 1 [pid 1820] mkdir("./file0", 000 [pid 1819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1820] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1819] <... futex resumed>) = 0 [pid 1819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1820] <... futex resumed>) = 1 [pid 1820] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1819] <... futex resumed>) = 0 [pid 1820] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1820] <... mount resumed>) = 0 [pid 1820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1819] <... futex resumed>) = 0 [pid 1819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1819] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1819] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1819] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1821 attached [pid 1821] set_robust_list(0x7fc84e07e9e0, 24 [pid 1819] <... clone resumed>, parent_tid=[1821], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1821 [pid 1821] <... set_robust_list resumed>) = 0 [pid 1819] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1821] umount2("./file0", MNT_DETACH [pid 1819] <... futex resumed>) = 0 [pid 1819] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1820] umount2("./file0", MNT_DETACH) = 0 [pid 1821] <... umount2 resumed>) = 0 [pid 1820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1821] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1820] <... futex resumed>) = 0 [pid 1821] <... futex resumed>) = 1 [pid 1820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1819] <... futex resumed>) = 0 [pid 1819] exit_group(0) = ? [pid 1820] <... futex resumed>) = ? [pid 1820] +++ exited with 0 +++ [pid 1821] +++ exited with 0 +++ [pid 1819] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1819, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1822 ./strace-static-x86_64: Process 1822 attached [pid 1822] set_robust_list(0x5555564465e0, 24) = 0 [pid 1822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1822] setpgid(0, 0) = 0 [pid 1822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1822] write(3, "1000", 4) = 4 [pid 1822] close(3) = 0 [pid 1822] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1822] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1822] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1823 attached , parent_tid=[1823], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1823 [pid 1823] set_robust_list(0x7fc84e09f9e0, 24 [pid 1822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1823] <... set_robust_list resumed>) = 0 [pid 1822] <... futex resumed>) = 0 [pid 1823] mkdir("./file0", 000 [pid 1822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1823] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1822] <... futex resumed>) = 0 [pid 1822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1823] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1822] <... futex resumed>) = 0 [pid 1822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1823] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1822] <... futex resumed>) = 0 [pid 1822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1823] <... mount resumed>) = 0 [pid 1823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1822] <... futex resumed>) = 0 [pid 1822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1822] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1822] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1822] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1823] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1824 attached [pid 1824] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1824] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1823] <... umount2 resumed>) = 0 [pid 1822] <... clone resumed>, parent_tid=[1824], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1824 [pid 1823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1822] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1824] <... futex resumed>) = 0 [pid 1824] umount2("./file0", MNT_DETACH [pid 1823] <... futex resumed>) = 0 [pid 1822] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1824] <... umount2 resumed>) = 0 [pid 1823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1824] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1822] <... futex resumed>) = 0 [pid 1822] exit_group(0) = ? [pid 1823] <... futex resumed>) = ? [pid 1824] +++ exited with 0 +++ [pid 1823] +++ exited with 0 +++ [pid 1822] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1822, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1825 attached , child_tidptr=0x5555564465d0) = 1825 [pid 1825] set_robust_list(0x5555564465e0, 24) = 0 [pid 1825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1825] setpgid(0, 0) = 0 [pid 1825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1825] write(3, "1000", 4) = 4 [pid 1825] close(3) = 0 [pid 1825] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1825] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1825] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1826], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1826 ./strace-static-x86_64: Process 1826 attached [pid 1826] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1826] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1826] <... futex resumed>) = 0 [pid 1825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1826] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1826] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1825] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1826] <... futex resumed>) = 0 [pid 1826] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1826] <... mount resumed>) = 0 [pid 1826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1826] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1825] <... futex resumed>) = 0 [pid 1825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1826] <... futex resumed>) = 0 [pid 1826] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1826] <... mount resumed>) = 0 [pid 1826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1825] <... futex resumed>) = 0 [pid 1825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1826] umount2("./file0", MNT_DETACH [pid 1825] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1825] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1825] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1827], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1827 [pid 1825] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1825] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1827 attached [pid 1827] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1827] umount2("./file0", MNT_DETACH [pid 1826] <... umount2 resumed>) = 0 [pid 1826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1827] <... umount2 resumed>) = 0 [pid 1827] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1825] <... futex resumed>) = 0 [pid 1825] exit_group(0) = ? [pid 1826] <... futex resumed>) = 231 [pid 1827] <... futex resumed>) = ? [pid 1827] +++ exited with 0 +++ [pid 1826] +++ exited with 0 +++ [pid 1825] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1825, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1828 ./strace-static-x86_64: Process 1828 attached [pid 1828] set_robust_list(0x5555564465e0, 24) = 0 [pid 1828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1828] setpgid(0, 0) = 0 [pid 1828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1828] write(3, "1000", 4) = 4 [pid 1828] close(3) = 0 [pid 1828] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1828] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1828] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1829 attached , parent_tid=[1829], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1829 [pid 1828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1829] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1829] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1828] <... futex resumed>) = 0 [pid 1829] <... futex resumed>) = 1 [pid 1828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1829] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1828] <... futex resumed>) = 0 [pid 1828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1829] <... mount resumed>) = 0 [pid 1829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1828] <... futex resumed>) = 0 [pid 1829] <... futex resumed>) = 1 [pid 1828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1829] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1828] <... futex resumed>) = 0 [pid 1828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1829] <... mount resumed>) = 0 [pid 1829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1828] <... futex resumed>) = 0 [pid 1829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1828] <... futex resumed>) = 0 [pid 1829] umount2("./file0", MNT_DETACH [pid 1828] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1828] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1829] <... umount2 resumed>) = 0 [pid 1828] <... mprotect resumed>) = 0 [pid 1829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1828] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1829] <... futex resumed>) = 0 [pid 1829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1830 attached [pid 1830] set_robust_list(0x7fc84e07e9e0, 24 [pid 1828] <... clone resumed>, parent_tid=[1830], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1830 [pid 1830] <... set_robust_list resumed>) = 0 [pid 1828] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1830] umount2("./file0", MNT_DETACH [pid 1828] <... futex resumed>) = 0 [pid 1828] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1830] <... umount2 resumed>) = 0 [pid 1830] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1828] <... futex resumed>) = 0 [pid 1828] exit_group(0 [pid 1829] <... futex resumed>) = ? [pid 1828] <... exit_group resumed>) = ? [pid 1829] +++ exited with 0 +++ [pid 1830] +++ exited with 0 +++ [pid 1828] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1828, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1831 ./strace-static-x86_64: Process 1831 attached [pid 1831] set_robust_list(0x5555564465e0, 24) = 0 [pid 1831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1831] setpgid(0, 0) = 0 [pid 1831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1831] write(3, "1000", 4) = 4 [pid 1831] close(3) = 0 [pid 1831] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1831] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1831] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1832 attached , parent_tid=[1832], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1832 [pid 1832] set_robust_list(0x7fc84e09f9e0, 24 [pid 1831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1832] <... set_robust_list resumed>) = 0 [pid 1831] <... futex resumed>) = 0 [pid 1831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1832] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1831] <... futex resumed>) = 0 [pid 1832] <... futex resumed>) = 1 [pid 1831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1832] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1831] <... futex resumed>) = 0 [pid 1831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1832] <... mount resumed>) = 0 [pid 1832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1831] <... futex resumed>) = 0 [pid 1832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1831] <... futex resumed>) = 0 [pid 1832] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1832] <... mount resumed>) = 0 [pid 1832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1831] <... futex resumed>) = 0 [pid 1832] <... futex resumed>) = 1 [pid 1831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1832] umount2("./file0", MNT_DETACH [pid 1831] <... futex resumed>) = 0 [pid 1831] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1831] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1832] <... umount2 resumed>) = 0 [pid 1831] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 1833 attached [pid 1832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1831] <... clone resumed>, parent_tid=[1833], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1833 [pid 1833] set_robust_list(0x7fc84e07e9e0, 24 [pid 1831] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1833] <... set_robust_list resumed>) = 0 [pid 1831] <... futex resumed>) = 0 [pid 1833] umount2("./file0", MNT_DETACH [pid 1831] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1833] <... umount2 resumed>) = 0 [pid 1833] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1831] <... futex resumed>) = 0 [pid 1833] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1831] exit_group(0) = ? [pid 1832] <... futex resumed>) = 231 [pid 1833] <... futex resumed>) = ? [pid 1832] +++ exited with 0 +++ [pid 1833] +++ exited with 0 +++ [pid 1831] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1831, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1834 attached , child_tidptr=0x5555564465d0) = 1834 [pid 1834] set_robust_list(0x5555564465e0, 24) = 0 [pid 1834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1834] setpgid(0, 0) = 0 [pid 1834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1834] write(3, "1000", 4) = 4 [pid 1834] close(3) = 0 [pid 1834] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1834] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1834] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1835 attached , parent_tid=[1835], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1835 [pid 1834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1835] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1835] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1834] <... futex resumed>) = 0 [pid 1834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1835] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1834] <... futex resumed>) = 0 [pid 1834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1835] <... mount resumed>) = 0 [pid 1835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1834] <... futex resumed>) = 0 [pid 1835] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1834] <... futex resumed>) = 0 [pid 1835] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1835] <... mount resumed>) = 0 [pid 1835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1834] <... futex resumed>) = 0 [pid 1834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1834] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1834] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1834] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1835] umount2("./file0", MNT_DETACH [pid 1834] <... clone resumed>, parent_tid=[1836], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1836 [pid 1834] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1834] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1836 attached [pid 1836] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1836] umount2("./file0", MNT_DETACH [pid 1835] <... umount2 resumed>) = 0 [pid 1835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1836] <... umount2 resumed>) = 0 [pid 1835] <... futex resumed>) = 0 [pid 1836] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1834] <... futex resumed>) = 0 [pid 1834] exit_group(0) = ? [pid 1836] <... futex resumed>) = ? [pid 1836] +++ exited with 0 +++ [pid 1835] +++ exited with 0 +++ [pid 1834] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1834, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1837 attached , child_tidptr=0x5555564465d0) = 1837 [pid 1837] set_robust_list(0x5555564465e0, 24) = 0 [pid 1837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1837] setpgid(0, 0) = 0 [pid 1837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1837] write(3, "1000", 4) = 4 [pid 1837] close(3) = 0 [pid 1837] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1837] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1837] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1838], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1838 [pid 1837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1838 attached [pid 1838] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1838] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1837] <... futex resumed>) = 0 [pid 1837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1838] <... futex resumed>) = 1 [pid 1838] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1837] <... futex resumed>) = 0 [pid 1837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1838] <... futex resumed>) = 1 [pid 1838] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1837] <... futex resumed>) = 0 [pid 1838] umount2("./file0", MNT_DETACH [pid 1837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1837] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1838] <... umount2 resumed>) = 0 [pid 1837] <... futex resumed>) = 0 [pid 1837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1837] <... mmap resumed>) = 0x7fc84e05e000 [pid 1837] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1838] <... futex resumed>) = 0 [pid 1838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1837] <... mprotect resumed>) = 0 [pid 1837] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1839 attached [pid 1839] set_robust_list(0x7fc84e07e9e0, 24 [pid 1837] <... clone resumed>, parent_tid=[1839], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1839 [pid 1839] <... set_robust_list resumed>) = 0 [pid 1837] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1839] umount2("./file0", MNT_DETACH [pid 1837] <... futex resumed>) = 0 [pid 1837] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1839] <... umount2 resumed>) = 0 [pid 1839] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1837] <... futex resumed>) = 0 [pid 1837] exit_group(0 [pid 1838] <... futex resumed>) = ? [pid 1837] <... exit_group resumed>) = ? [pid 1838] +++ exited with 0 +++ [pid 1839] +++ exited with 0 +++ [pid 1837] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1837, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1840 attached , child_tidptr=0x5555564465d0) = 1840 [pid 1840] set_robust_list(0x5555564465e0, 24) = 0 [pid 1840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1840] setpgid(0, 0) = 0 [pid 1840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1840] write(3, "1000", 4) = 4 [pid 1840] close(3) = 0 [pid 1840] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1840] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1840] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1841], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1841 [pid 1840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1841 attached [pid 1841] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1841] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1840] <... futex resumed>) = 0 [pid 1840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1841] <... futex resumed>) = 1 [pid 1841] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1840] <... futex resumed>) = 0 [pid 1841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1841] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1840] <... futex resumed>) = 0 [pid 1841] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1841] <... mount resumed>) = 0 [pid 1841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1840] <... futex resumed>) = 0 [pid 1840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1840] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1840] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1841] umount2("./file0", MNT_DETACH [pid 1840] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1842], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1842 [pid 1840] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1840] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1842 attached [pid 1842] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1842] umount2("./file0", MNT_DETACH [pid 1841] <... umount2 resumed>) = 0 [pid 1841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1842] <... umount2 resumed>) = 0 [pid 1842] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1840] <... futex resumed>) = 0 [pid 1840] exit_group(0) = ? [pid 1841] <... futex resumed>) = ? [pid 1842] <... futex resumed>) = ? [pid 1842] +++ exited with 0 +++ [pid 1841] +++ exited with 0 +++ [pid 1840] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1840, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1843 attached , child_tidptr=0x5555564465d0) = 1843 [pid 1843] set_robust_list(0x5555564465e0, 24) = 0 [pid 1843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1843] setpgid(0, 0) = 0 [pid 1843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1843] write(3, "1000", 4) = 4 [pid 1843] close(3) = 0 [pid 1843] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1843] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1843] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1844], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1844 [pid 1843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1844 attached [pid 1844] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1844] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1843] <... futex resumed>) = 0 [pid 1843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1844] <... futex resumed>) = 1 [pid 1844] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1843] <... futex resumed>) = 0 [pid 1844] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1844] <... mount resumed>) = 0 [pid 1843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1843] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1844] <... futex resumed>) = 0 [pid 1843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1844] umount2("./file0", MNT_DETACH [pid 1843] <... futex resumed>) = 0 [pid 1843] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1844] <... umount2 resumed>) = 0 [pid 1843] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1843] <... mprotect resumed>) = 0 [pid 1844] <... futex resumed>) = 0 [pid 1844] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1843] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1845 attached , parent_tid=[1845], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1845 [pid 1843] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1843] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1845] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1845] umount2("./file0", MNT_DETACH) = 0 [pid 1845] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1843] <... futex resumed>) = 0 [pid 1843] exit_group(0) = ? [pid 1844] <... futex resumed>) = ? [pid 1844] +++ exited with 0 +++ [pid 1845] +++ exited with 0 +++ [pid 1843] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1843, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1846 attached , child_tidptr=0x5555564465d0) = 1846 [pid 1846] set_robust_list(0x5555564465e0, 24) = 0 [pid 1846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1846] setpgid(0, 0) = 0 [pid 1846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1846] write(3, "1000", 4) = 4 [pid 1846] close(3) = 0 [pid 1846] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1846] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1846] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1847 attached , parent_tid=[1847], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1847 [pid 1847] set_robust_list(0x7fc84e09f9e0, 24 [pid 1846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1847] <... set_robust_list resumed>) = 0 [pid 1846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1847] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1847] <... futex resumed>) = 0 [pid 1847] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1847] <... mount resumed>) = 0 [pid 1847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1847] <... futex resumed>) = 0 [pid 1847] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1847] <... mount resumed>) = 0 [pid 1847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1847] <... futex resumed>) = 0 [pid 1846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1847] umount2("./file0", MNT_DETACH) = 0 [pid 1846] <... futex resumed>) = 0 [pid 1847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1847] <... futex resumed>) = 0 [pid 1847] umount2("./file0", MNT_DETACH) = 0 [pid 1847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1846] exit_group(0) = ? [pid 1847] <... futex resumed>) = ? [pid 1847] +++ exited with 0 +++ [pid 1846] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1846, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1848 ./strace-static-x86_64: Process 1848 attached [pid 1848] set_robust_list(0x5555564465e0, 24) = 0 [pid 1848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1848] setpgid(0, 0) = 0 [pid 1848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1848] write(3, "1000", 4) = 4 [pid 1848] close(3) = 0 [pid 1848] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1848] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1848] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1849], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1849 [pid 1848] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1848] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1849 attached [pid 1849] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1849] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1848] <... futex resumed>) = 0 [pid 1848] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1848] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1849] <... futex resumed>) = 1 [pid 1849] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1848] <... futex resumed>) = 0 [pid 1849] <... futex resumed>) = 1 [pid 1848] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1849] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1848] <... futex resumed>) = 0 [pid 1848] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1849] <... mount resumed>) = 0 [pid 1849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1848] <... futex resumed>) = 0 [pid 1849] <... futex resumed>) = 1 [pid 1848] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1849] umount2("./file0", MNT_DETACH [pid 1848] <... futex resumed>) = 0 [pid 1848] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1848] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1849] <... umount2 resumed>) = 0 [pid 1848] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1850 attached ) = 0 [pid 1849] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1848] <... clone resumed>, parent_tid=[1850], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1850 [pid 1850] set_robust_list(0x7fc84e07e9e0, 24 [pid 1848] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1850] <... set_robust_list resumed>) = 0 [pid 1848] <... futex resumed>) = 0 [pid 1850] umount2("./file0", MNT_DETACH [pid 1848] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1850] <... umount2 resumed>) = 0 [pid 1850] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1848] <... futex resumed>) = 0 [pid 1850] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1848] exit_group(0 [pid 1850] <... futex resumed>) = ? [pid 1849] <... futex resumed>) = ? [pid 1848] <... exit_group resumed>) = ? [pid 1849] +++ exited with 0 +++ [pid 1850] +++ exited with 0 +++ [pid 1848] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1848, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1851 ./strace-static-x86_64: Process 1851 attached [pid 1851] set_robust_list(0x5555564465e0, 24) = 0 [pid 1851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1851] setpgid(0, 0) = 0 [pid 1851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1851] write(3, "1000", 4) = 4 [pid 1851] close(3) = 0 [pid 1851] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1851] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1851] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1852 attached , parent_tid=[1852], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1852 [pid 1852] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1852] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1851] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1852] <... futex resumed>) = 0 [pid 1852] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1851] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1851] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1852] <... futex resumed>) = 0 [pid 1851] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1852] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1851] <... futex resumed>) = 0 [pid 1852] <... mount resumed>) = 0 [pid 1851] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1851] <... futex resumed>) = 0 [pid 1851] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1851] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1852] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1851] <... futex resumed>) = 0 [pid 1852] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1851] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1852] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1851] <... futex resumed>) = 0 [pid 1852] umount2("./file0", MNT_DETACH [pid 1851] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1852] <... umount2 resumed>) = 0 [pid 1851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1851] <... mmap resumed>) = 0x7fc84e05e000 [pid 1852] <... futex resumed>) = 0 [pid 1851] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1852] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1851] <... mprotect resumed>) = 0 [pid 1851] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1853 attached [pid 1853] set_robust_list(0x7fc84e07e9e0, 24 [pid 1851] <... clone resumed>, parent_tid=[1853], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1853 [pid 1853] <... set_robust_list resumed>) = 0 [pid 1851] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1853] umount2("./file0", MNT_DETACH [pid 1851] <... futex resumed>) = 0 [pid 1851] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1853] <... umount2 resumed>) = 0 [pid 1853] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1851] <... futex resumed>) = 0 [pid 1853] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1851] exit_group(0 [pid 1853] <... futex resumed>) = ? [pid 1852] <... futex resumed>) = ? [pid 1851] <... exit_group resumed>) = ? [pid 1852] +++ exited with 0 +++ [pid 1853] +++ exited with 0 +++ [pid 1851] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1851, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1854 attached , child_tidptr=0x5555564465d0) = 1854 [pid 1854] set_robust_list(0x5555564465e0, 24) = 0 [pid 1854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1854] setpgid(0, 0) = 0 [pid 1854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1854] write(3, "1000", 4) = 4 [pid 1854] close(3) = 0 [pid 1854] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1854] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1854] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1855 attached , parent_tid=[1855], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1855 [pid 1855] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1855] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1854] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1855] <... futex resumed>) = 0 [pid 1855] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1854] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1855] <... futex resumed>) = 0 [pid 1854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1855] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1854] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1855] <... futex resumed>) = 0 [pid 1855] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1854] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1855] <... mount resumed>) = 0 [pid 1855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1855] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1854] <... futex resumed>) = 0 [pid 1854] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1854] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1855] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1854] <... futex resumed>) = 0 [pid 1854] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1854] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1854] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1854] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1855] umount2("./file0", MNT_DETACH [pid 1854] <... clone resumed>, parent_tid=[1856], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1856 [pid 1854] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1855] <... umount2 resumed>) = 0 [pid 1854] <... futex resumed>) = 0 [pid 1854] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1856 attached ) = 0 [pid 1855] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1856] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1856] umount2("./file0", MNT_DETACH) = 0 [pid 1856] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1854] <... futex resumed>) = 0 [pid 1856] <... futex resumed>) = 1 [pid 1854] exit_group(0 [pid 1856] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1854] <... exit_group resumed>) = ? [pid 1855] <... futex resumed>) = ? [pid 1856] <... futex resumed>) = ? [pid 1856] +++ exited with 0 +++ [pid 1855] +++ exited with 0 +++ [pid 1854] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1854, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1857 ./strace-static-x86_64: Process 1857 attached [pid 1857] set_robust_list(0x5555564465e0, 24) = 0 [pid 1857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1857] setpgid(0, 0) = 0 [pid 1857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1857] write(3, "1000", 4) = 4 [pid 1857] close(3) = 0 [pid 1857] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1857] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1857] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1857] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1858], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1858 [pid 1857] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1857] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1858 attached [pid 1858] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1858] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1857] <... futex resumed>) = 0 [pid 1857] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1857] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1858] <... futex resumed>) = 1 [pid 1858] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1857] <... futex resumed>) = 0 [pid 1858] <... futex resumed>) = 1 [pid 1857] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1858] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1857] <... futex resumed>) = 0 [pid 1857] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1858] <... mount resumed>) = 0 [pid 1858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1857] <... futex resumed>) = 0 [pid 1857] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1858] umount2("./file0", MNT_DETACH [pid 1857] <... futex resumed>) = 0 [pid 1857] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1857] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1858] <... umount2 resumed>) = 0 [pid 1857] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1857] <... mprotect resumed>) = 0 [pid 1858] <... futex resumed>) = 0 [pid 1857] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1858] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1859 attached [pid 1857] <... clone resumed>, parent_tid=[1859], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1859 [pid 1859] set_robust_list(0x7fc84e07e9e0, 24 [pid 1857] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1859] <... set_robust_list resumed>) = 0 [pid 1857] <... futex resumed>) = 0 [pid 1859] umount2("./file0", MNT_DETACH [pid 1857] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1859] <... umount2 resumed>) = 0 [pid 1859] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1857] <... futex resumed>) = 0 [pid 1857] exit_group(0) = ? [pid 1858] <... futex resumed>) = ? [pid 1858] +++ exited with 0 +++ [pid 1859] <... futex resumed>) = ? [pid 1859] +++ exited with 0 +++ [pid 1857] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1857, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1860 ./strace-static-x86_64: Process 1860 attached [pid 1860] set_robust_list(0x5555564465e0, 24) = 0 [pid 1860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1860] setpgid(0, 0) = 0 [pid 1860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1860] write(3, "1000", 4) = 4 [pid 1860] close(3) = 0 [pid 1860] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1860] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1860] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1861 attached , parent_tid=[1861], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1861 [pid 1860] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1861] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1861] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1861] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1860] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1860] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1861] <... futex resumed>) = 0 [pid 1861] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1860] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1861] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1860] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1860] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1861] <... futex resumed>) = 0 [pid 1861] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1860] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1861] <... mount resumed>) = 0 [pid 1861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1861] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1860] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1860] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1861] <... futex resumed>) = 0 [pid 1861] umount2("./file0", MNT_DETACH [pid 1860] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1861] <... umount2 resumed>) = 0 [pid 1861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1861] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1860] <... futex resumed>) = 0 [pid 1860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1860] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1860] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1862 attached [pid 1862] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1862] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1860] <... clone resumed>, parent_tid=[1862], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1862 [pid 1860] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1862] <... futex resumed>) = 0 [pid 1862] umount2("./file0", MNT_DETACH [pid 1860] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1862] <... umount2 resumed>) = 0 [pid 1862] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1860] <... futex resumed>) = 0 [pid 1860] exit_group(0 [pid 1862] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1861] <... futex resumed>) = ? [pid 1862] <... futex resumed>) = ? [pid 1861] +++ exited with 0 +++ [pid 1862] +++ exited with 0 +++ [pid 1860] <... exit_group resumed>) = ? [pid 1860] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1860, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1863 ./strace-static-x86_64: Process 1863 attached [pid 1863] set_robust_list(0x5555564465e0, 24) = 0 [pid 1863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1863] setpgid(0, 0) = 0 [pid 1863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1863] write(3, "1000", 4) = 4 [pid 1863] close(3) = 0 [pid 1863] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1863] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1863] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1863] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1864], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1864 [pid 1863] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1863] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1864 attached [pid 1864] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1864] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1863] <... futex resumed>) = 0 [pid 1863] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1863] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1864] <... futex resumed>) = 1 [pid 1864] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1863] <... futex resumed>) = 0 [pid 1863] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1863] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1864] <... futex resumed>) = 1 [pid 1864] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1863] <... futex resumed>) = 0 [pid 1864] umount2("./file0", MNT_DETACH [pid 1863] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1864] <... umount2 resumed>) = 0 [pid 1863] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1863] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1863] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1863] <... mprotect resumed>) = 0 [pid 1863] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1865], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1865 [pid 1864] <... futex resumed>) = 0 [pid 1863] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1863] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1865 attached [pid 1865] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1865] umount2("./file0", MNT_DETACH [pid 1864] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1865] <... umount2 resumed>) = 0 [pid 1865] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1863] <... futex resumed>) = 0 [pid 1863] exit_group(0) = ? [pid 1864] <... futex resumed>) = ? [pid 1865] <... futex resumed>) = ? [pid 1865] +++ exited with 0 +++ [pid 1864] +++ exited with 0 +++ [pid 1863] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1863, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1866 attached , child_tidptr=0x5555564465d0) = 1866 [pid 1866] set_robust_list(0x5555564465e0, 24) = 0 [pid 1866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1866] setpgid(0, 0) = 0 [pid 1866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1866] write(3, "1000", 4) = 4 [pid 1866] close(3) = 0 [pid 1866] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1866] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1866] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1867 attached , parent_tid=[1867], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1867 [pid 1867] set_robust_list(0x7fc84e09f9e0, 24 [pid 1866] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1867] <... set_robust_list resumed>) = 0 [pid 1866] <... futex resumed>) = 0 [pid 1866] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1867] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1866] <... futex resumed>) = 0 [pid 1866] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1866] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1867] <... futex resumed>) = 1 [pid 1867] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1866] <... futex resumed>) = 0 [pid 1866] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1867] <... futex resumed>) = 1 [pid 1866] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1867] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1866] <... futex resumed>) = 0 [pid 1867] <... futex resumed>) = 1 [pid 1866] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1867] umount2("./file0", MNT_DETACH [pid 1866] <... futex resumed>) = 0 [pid 1866] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1866] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1867] <... umount2 resumed>) = 0 [pid 1867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1866] <... mprotect resumed>) = 0 [pid 1867] <... futex resumed>) = 0 [pid 1866] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1867] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1868 attached [pid 1866] <... clone resumed>, parent_tid=[1868], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1868 [pid 1868] set_robust_list(0x7fc84e07e9e0, 24 [pid 1866] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1868] <... set_robust_list resumed>) = 0 [pid 1866] <... futex resumed>) = 0 [pid 1868] umount2("./file0", MNT_DETACH [pid 1866] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1868] <... umount2 resumed>) = 0 [pid 1868] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1866] <... futex resumed>) = 0 [pid 1868] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1866] exit_group(0 [pid 1867] <... futex resumed>) = ? [pid 1866] <... exit_group resumed>) = ? [pid 1867] +++ exited with 0 +++ [pid 1868] <... futex resumed>) = ? [pid 1868] +++ exited with 0 +++ [pid 1866] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1866, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1869 ./strace-static-x86_64: Process 1869 attached [pid 1869] set_robust_list(0x5555564465e0, 24) = 0 [pid 1869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1869] setpgid(0, 0) = 0 [pid 1869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1869] write(3, "1000", 4) = 4 [pid 1869] close(3) = 0 [pid 1869] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1869] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1869] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1869] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1870], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1870 [pid 1869] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1869] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1870 attached [pid 1870] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1870] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1869] <... futex resumed>) = 0 [pid 1869] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1869] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1870] <... futex resumed>) = 1 [pid 1870] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1869] <... futex resumed>) = 0 [pid 1869] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1869] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1870] <... futex resumed>) = 1 [pid 1870] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1869] <... futex resumed>) = 0 [pid 1869] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1870] umount2("./file0", MNT_DETACH [pid 1869] <... futex resumed>) = 0 [pid 1869] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1869] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1869] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1869] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1871], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1871 [pid 1869] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1869] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1871 attached [pid 1870] <... umount2 resumed>) = 0 [pid 1871] set_robust_list(0x7fc84e07e9e0, 24 [pid 1870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1871] <... set_robust_list resumed>) = 0 [pid 1870] <... futex resumed>) = 0 [pid 1871] umount2("./file0", MNT_DETACH [pid 1870] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1871] <... umount2 resumed>) = 0 [pid 1871] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1869] <... futex resumed>) = 0 [pid 1871] <... futex resumed>) = 1 [pid 1869] exit_group(0 [pid 1871] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1869] <... exit_group resumed>) = ? [pid 1870] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1871] <... futex resumed>) = ? [pid 1870] +++ exited with 0 +++ [pid 1871] +++ exited with 0 +++ [pid 1869] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1869, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1872 attached , child_tidptr=0x5555564465d0) = 1872 [pid 1872] set_robust_list(0x5555564465e0, 24) = 0 [pid 1872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1872] setpgid(0, 0) = 0 [pid 1872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1872] write(3, "1000", 4) = 4 [pid 1872] close(3) = 0 [pid 1872] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1872] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1872] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1873 attached [pid 1873] set_robust_list(0x7fc84e09f9e0, 24 [pid 1872] <... clone resumed>, parent_tid=[1873], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1873 [pid 1873] <... set_robust_list resumed>) = 0 [pid 1873] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1872] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1873] <... futex resumed>) = 0 [pid 1872] <... futex resumed>) = 1 [pid 1873] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1873] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1872] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1872] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1873] <... futex resumed>) = 0 [pid 1873] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1872] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1873] <... mount resumed>) = 0 [pid 1873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1873] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1872] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1872] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1873] <... futex resumed>) = 0 [pid 1872] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1873] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1872] <... futex resumed>) = 0 [pid 1872] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1872] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1872] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1873] umount2("./file0", MNT_DETACH [pid 1872] <... mprotect resumed>) = 0 [pid 1872] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1873] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 1874 attached [pid 1873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1872] <... clone resumed>, parent_tid=[1874], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1874 [pid 1873] <... futex resumed>) = 0 [pid 1872] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1872] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1874] set_robust_list(0x7fc84e07e9e0, 24 [pid 1873] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1874] <... set_robust_list resumed>) = 0 [pid 1874] umount2("./file0", MNT_DETACH) = 0 [pid 1874] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1874] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1872] <... futex resumed>) = 0 [pid 1872] exit_group(0) = ? [pid 1873] <... futex resumed>) = ? [pid 1874] <... futex resumed>) = ? [pid 1873] +++ exited with 0 +++ [pid 1874] +++ exited with 0 +++ [pid 1872] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1872, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1875 ./strace-static-x86_64: Process 1875 attached [pid 1875] set_robust_list(0x5555564465e0, 24) = 0 [pid 1875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1875] setpgid(0, 0) = 0 [pid 1875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1875] write(3, "1000", 4) = 4 [pid 1875] close(3) = 0 [pid 1875] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1875] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1875] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1875] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1876 attached , parent_tid=[1876], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1876 [pid 1875] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1875] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1876] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1876] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1875] <... futex resumed>) = 0 [pid 1876] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1875] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1876] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1875] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1876] <... mount resumed>) = 0 [pid 1876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1875] <... futex resumed>) = 0 [pid 1875] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1875] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1876] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1875] <... futex resumed>) = 0 [pid 1876] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1875] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1875] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1875] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1875] <... mmap resumed>) = 0x7fc84e05e000 [pid 1876] umount2("./file0", MNT_DETACH [pid 1875] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1875] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1877], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1877 [pid 1876] <... umount2 resumed>) = 0 [pid 1875] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1875] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1877 attached [pid 1877] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1877] umount2("./file0", MNT_DETACH [pid 1876] <... futex resumed>) = 0 [pid 1877] <... umount2 resumed>) = 0 [pid 1876] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1877] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1875] <... futex resumed>) = 0 [pid 1875] exit_group(0) = ? [pid 1876] <... futex resumed>) = ? [pid 1876] +++ exited with 0 +++ [pid 1877] +++ exited with 0 +++ [pid 1875] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1875, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1878 attached , child_tidptr=0x5555564465d0) = 1878 [pid 1878] set_robust_list(0x5555564465e0, 24) = 0 [pid 1878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1878] setpgid(0, 0) = 0 [pid 1878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1878] write(3, "1000", 4) = 4 [pid 1878] close(3) = 0 [pid 1878] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1878] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1878] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1878] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1879 attached , parent_tid=[1879], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1879 [pid 1878] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1878] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1879] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1879] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1878] <... futex resumed>) = 0 [pid 1878] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1879] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1878] <... futex resumed>) = 0 [pid 1879] <... mount resumed>) = 0 [pid 1878] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1878] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1879] <... futex resumed>) = 0 [pid 1878] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1879] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1878] <... futex resumed>) = 0 [pid 1878] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1879] <... mount resumed>) = 0 [pid 1879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1878] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1878] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1878] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1878] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1878] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1879] <... futex resumed>) = 0 [pid 1878] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1880 attached [pid 1879] umount2("./file0", MNT_DETACH [pid 1878] <... clone resumed>, parent_tid=[1880], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1880 [pid 1878] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1878] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1880] set_robust_list(0x7fc84e07e9e0, 24 [pid 1879] <... umount2 resumed>) = 0 [pid 1880] <... set_robust_list resumed>) = 0 [pid 1879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1880] umount2("./file0", MNT_DETACH [pid 1879] <... futex resumed>) = 0 [pid 1879] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1880] <... umount2 resumed>) = 0 [pid 1880] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1878] <... futex resumed>) = 0 [pid 1880] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1878] exit_group(0 [pid 1880] <... futex resumed>) = ? [pid 1879] <... futex resumed>) = ? [pid 1878] <... exit_group resumed>) = ? [pid 1879] +++ exited with 0 +++ [pid 1880] +++ exited with 0 +++ [pid 1878] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1878, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1881 ./strace-static-x86_64: Process 1881 attached [pid 1881] set_robust_list(0x5555564465e0, 24) = 0 [pid 1881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1881] setpgid(0, 0) = 0 [pid 1881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1881] write(3, "1000", 4) = 4 [pid 1881] close(3) = 0 [pid 1881] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1881] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1881] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1882 attached , parent_tid=[1882], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1882 [pid 1881] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1882] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1882] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1881] <... futex resumed>) = 0 [pid 1881] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1882] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1881] <... futex resumed>) = 0 [pid 1881] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1882] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1881] <... futex resumed>) = 0 [pid 1881] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1881] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1881] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1883 attached , parent_tid=[1883], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1883 [pid 1881] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1881] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1882] umount2("./file0", MNT_DETACH [pid 1883] set_robust_list(0x7fc84e07e9e0, 24 [pid 1882] <... umount2 resumed>) = 0 [pid 1883] <... set_robust_list resumed>) = 0 [pid 1882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1883] umount2("./file0", MNT_DETACH [pid 1882] <... futex resumed>) = 0 [pid 1882] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1883] <... umount2 resumed>) = 0 [pid 1883] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1881] <... futex resumed>) = 0 [pid 1881] exit_group(0) = ? [pid 1882] <... futex resumed>) = ? [pid 1882] +++ exited with 0 +++ [pid 1883] +++ exited with 0 +++ [pid 1881] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1881, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1884 ./strace-static-x86_64: Process 1884 attached [pid 1884] set_robust_list(0x5555564465e0, 24) = 0 [pid 1884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1884] setpgid(0, 0) = 0 [pid 1884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1884] write(3, "1000", 4) = 4 [pid 1884] close(3) = 0 [pid 1884] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1884] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1884] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1885 attached , parent_tid=[1885], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1885 [pid 1885] set_robust_list(0x7fc84e09f9e0, 24 [pid 1884] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1885] <... set_robust_list resumed>) = 0 [pid 1884] <... futex resumed>) = 0 [pid 1885] mkdir("./file0", 000 [pid 1884] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1885] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1884] <... futex resumed>) = 0 [pid 1885] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1884] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1884] <... futex resumed>) = 0 [pid 1884] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1885] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1884] <... futex resumed>) = 0 [pid 1885] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1884] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1884] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1885] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1884] <... futex resumed>) = 0 [pid 1885] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1884] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1884] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1884] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1884] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 1886 attached [pid 1885] umount2("./file0", MNT_DETACH [pid 1884] <... clone resumed>, parent_tid=[1886], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1886 [pid 1884] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1886] set_robust_list(0x7fc84e07e9e0, 24 [pid 1885] <... umount2 resumed>) = 0 [pid 1884] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1885] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1886] <... set_robust_list resumed>) = 0 [pid 1886] umount2("./file0", MNT_DETACH) = 0 [pid 1886] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1884] <... futex resumed>) = 0 [pid 1884] exit_group(0 [pid 1885] <... futex resumed>) = ? [pid 1884] <... exit_group resumed>) = ? [pid 1885] +++ exited with 0 +++ [pid 1886] +++ exited with 0 +++ [pid 1884] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1884, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1887 ./strace-static-x86_64: Process 1887 attached [pid 1887] set_robust_list(0x5555564465e0, 24) = 0 [pid 1887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1887] setpgid(0, 0) = 0 [pid 1887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1887] write(3, "1000", 4) = 4 [pid 1887] close(3) = 0 [pid 1887] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1887] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1887] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1887] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1888 attached , parent_tid=[1888], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1888 [pid 1888] set_robust_list(0x7fc84e09f9e0, 24 [pid 1887] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1888] <... set_robust_list resumed>) = 0 [pid 1887] <... futex resumed>) = 0 [pid 1887] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1888] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1887] <... futex resumed>) = 0 [pid 1887] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1887] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1888] <... futex resumed>) = 1 [pid 1888] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1887] <... futex resumed>) = 0 [pid 1888] <... futex resumed>) = 1 [pid 1887] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1888] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1887] <... futex resumed>) = 0 [pid 1887] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1888] <... mount resumed>) = 0 [pid 1888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1887] <... futex resumed>) = 0 [pid 1887] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1887] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1887] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1887] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1887] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1888] umount2("./file0", MNT_DETACH [pid 1887] <... clone resumed>, parent_tid=[1889], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1889 [pid 1887] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1887] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1889 attached [pid 1889] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1889] umount2("./file0", MNT_DETACH) = 0 [pid 1888] <... umount2 resumed>) = 0 [pid 1888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1889] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1888] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1887] <... futex resumed>) = 0 [pid 1889] <... futex resumed>) = 1 [pid 1887] exit_group(0 [pid 1889] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1887] <... exit_group resumed>) = ? [pid 1888] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 1889] <... futex resumed>) = ? [pid 1888] +++ exited with 0 +++ [pid 1889] +++ exited with 0 +++ [pid 1887] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1887, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1890 attached , child_tidptr=0x5555564465d0) = 1890 [pid 1890] set_robust_list(0x5555564465e0, 24) = 0 [pid 1890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1890] setpgid(0, 0) = 0 [pid 1890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1890] write(3, "1000", 4) = 4 [pid 1890] close(3) = 0 [pid 1890] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1890] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1890] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1891], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1891 [pid 1890] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1890] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1891 attached [pid 1891] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1891] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1890] <... futex resumed>) = 0 [pid 1890] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1890] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1891] <... futex resumed>) = 1 [pid 1891] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1890] <... futex resumed>) = 0 [pid 1891] <... futex resumed>) = 1 [pid 1890] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1891] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1890] <... futex resumed>) = 0 [pid 1890] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1891] <... mount resumed>) = 0 [pid 1891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1890] <... futex resumed>) = 0 [pid 1890] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1890] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1890] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1891] umount2("./file0", MNT_DETACH [pid 1890] <... mprotect resumed>) = 0 [pid 1890] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1892], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1892 [pid 1890] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1890] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1892 attached [pid 1892] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1892] umount2("./file0", MNT_DETACH) = 0 [pid 1892] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1890] <... futex resumed>) = 0 [pid 1892] <... futex resumed>) = 1 [pid 1892] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1891] <... umount2 resumed>) = 0 [pid 1891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1891] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1890] exit_group(0) = ? [pid 1891] <... futex resumed>) = ? [pid 1892] <... futex resumed>) = ? [pid 1892] +++ exited with 0 +++ [pid 1891] +++ exited with 0 +++ [pid 1890] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1890, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1893 ./strace-static-x86_64: Process 1893 attached [pid 1893] set_robust_list(0x5555564465e0, 24) = 0 [pid 1893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1893] setpgid(0, 0) = 0 [pid 1893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1893] write(3, "1000", 4) = 4 [pid 1893] close(3) = 0 [pid 1893] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1893] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1893] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1893] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1894 attached , parent_tid=[1894], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1894 [pid 1893] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1893] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1894] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1894] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1894] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1893] <... futex resumed>) = 0 [pid 1893] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1894] <... futex resumed>) = 0 [pid 1893] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1894] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1893] <... futex resumed>) = 0 [pid 1894] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1893] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1893] <... futex resumed>) = 0 [pid 1894] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1893] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1894] <... mount resumed>) = 0 [pid 1894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1893] <... futex resumed>) = 0 [pid 1893] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1893] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1893] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1893] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1894] umount2("./file0", MNT_DETACH [pid 1893] <... mprotect resumed>) = 0 [pid 1893] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1895], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1895 [pid 1893] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1894] <... umount2 resumed>) = 0 [pid 1893] <... futex resumed>) = 0 [pid 1893] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1895 attached [pid 1894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1895] set_robust_list(0x7fc84e07e9e0, 24 [pid 1894] <... futex resumed>) = 0 [pid 1895] <... set_robust_list resumed>) = 0 [pid 1894] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1895] umount2("./file0", MNT_DETACH) = 0 [pid 1895] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1893] <... futex resumed>) = 0 [pid 1893] exit_group(0) = ? [pid 1894] <... futex resumed>) = ? [pid 1894] +++ exited with 0 +++ [pid 1895] +++ exited with 0 +++ [pid 1893] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1893, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1896 ./strace-static-x86_64: Process 1896 attached [pid 1896] set_robust_list(0x5555564465e0, 24) = 0 [pid 1896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1896] setpgid(0, 0) = 0 [pid 1896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1896] write(3, "1000", 4) = 4 [pid 1896] close(3) = 0 [pid 1896] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1896] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1896] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1897], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1897 ./strace-static-x86_64: Process 1897 attached [pid 1896] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1897] set_robust_list(0x7fc84e09f9e0, 24 [pid 1896] <... futex resumed>) = 0 [pid 1896] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1897] <... set_robust_list resumed>) = 0 [pid 1897] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1897] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1896] <... futex resumed>) = 0 [pid 1896] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1896] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1897] <... futex resumed>) = 0 [pid 1897] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1896] <... futex resumed>) = 0 [pid 1896] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1896] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1897] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1896] <... futex resumed>) = 0 [pid 1896] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1896] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1896] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1896] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1898], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1898 [pid 1897] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1898 attached [pid 1898] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1898] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1896] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1898] <... futex resumed>) = 0 [pid 1898] umount2("./file0", MNT_DETACH) = 0 [pid 1898] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1898] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1896] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1897] <... umount2 resumed>) = 0 [pid 1897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1897] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1896] exit_group(0 [pid 1897] <... futex resumed>) = ? [pid 1896] <... exit_group resumed>) = ? [pid 1898] <... futex resumed>) = ? [pid 1898] +++ exited with 0 +++ [pid 1897] +++ exited with 0 +++ [pid 1896] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1896, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1899 ./strace-static-x86_64: Process 1899 attached [pid 1899] set_robust_list(0x5555564465e0, 24) = 0 [pid 1899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1899] setpgid(0, 0) = 0 [pid 1899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1899] write(3, "1000", 4) = 4 [pid 1899] close(3) = 0 [pid 1899] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1899] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1899] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1900 attached , parent_tid=[1900], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1900 [pid 1899] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1900] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1900] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1899] <... futex resumed>) = 0 [pid 1899] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1900] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1899] <... futex resumed>) = 0 [pid 1899] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1900] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1899] <... futex resumed>) = 0 [pid 1899] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1899] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1899] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1901 attached , parent_tid=[1901], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1901 [pid 1899] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1899] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1900] umount2("./file0", MNT_DETACH [pid 1901] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1901] umount2("./file0", MNT_DETACH [pid 1900] <... umount2 resumed>) = 0 [pid 1900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1901] <... umount2 resumed>) = 0 [pid 1900] <... futex resumed>) = 0 [pid 1901] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1901] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1900] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1899] <... futex resumed>) = 0 [pid 1899] exit_group(0 [pid 1900] <... futex resumed>) = ? [pid 1899] <... exit_group resumed>) = ? [pid 1901] <... futex resumed>) = ? [pid 1901] +++ exited with 0 +++ [pid 1900] +++ exited with 0 +++ [pid 1899] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1899, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1902 ./strace-static-x86_64: Process 1902 attached [pid 1902] set_robust_list(0x5555564465e0, 24) = 0 [pid 1902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1902] setpgid(0, 0) = 0 [pid 1902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1902] write(3, "1000", 4) = 4 [pid 1902] close(3) = 0 [pid 1902] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1902] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1902] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1903], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1903 [pid 1902] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1903 attached [pid 1903] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1903] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1902] <... futex resumed>) = 0 [pid 1902] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1903] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1902] <... futex resumed>) = 0 [pid 1902] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1903] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1902] <... futex resumed>) = 0 [pid 1902] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1902] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1902] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1904 attached [pid 1903] umount2("./file0", MNT_DETACH [pid 1902] <... clone resumed>, parent_tid=[1904], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1904 [pid 1902] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1902] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1904] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1903] <... umount2 resumed>) = 0 [pid 1904] umount2("./file0", MNT_DETACH [pid 1903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1903] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1904] <... umount2 resumed>) = 0 [pid 1904] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1902] <... futex resumed>) = 0 [pid 1902] exit_group(0) = ? [pid 1904] +++ exited with 0 +++ [pid 1903] <... futex resumed>) = ? [pid 1903] +++ exited with 0 +++ [pid 1902] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1902, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1905 attached , child_tidptr=0x5555564465d0) = 1905 [pid 1905] set_robust_list(0x5555564465e0, 24) = 0 [pid 1905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1905] setpgid(0, 0) = 0 [pid 1905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1905] write(3, "1000", 4) = 4 [pid 1905] close(3) = 0 [pid 1905] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1905] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1905] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1906], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1906 [pid 1905] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1905] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1906 attached [pid 1906] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1906] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1906] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1905] <... futex resumed>) = 0 [pid 1905] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1905] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1906] <... futex resumed>) = 1 [pid 1906] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1906] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1905] <... futex resumed>) = 0 [pid 1906] <... futex resumed>) = 1 [pid 1905] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1906] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1905] <... futex resumed>) = 0 [pid 1905] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1906] <... mount resumed>) = 0 [pid 1906] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1905] <... futex resumed>) = 0 [pid 1905] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1906] umount2("./file0", MNT_DETACH [pid 1905] <... futex resumed>) = 0 [pid 1905] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1905] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1905] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1906] <... umount2 resumed>) = 0 [pid 1905] <... clone resumed>, parent_tid=[1907], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1907 [pid 1905] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1905] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1907 attached [pid 1906] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1907] set_robust_list(0x7fc84e07e9e0, 24 [pid 1906] <... futex resumed>) = 0 [pid 1907] <... set_robust_list resumed>) = 0 [pid 1906] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1907] umount2("./file0", MNT_DETACH) = 0 [pid 1907] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1905] <... futex resumed>) = 0 [pid 1905] exit_group(0 [pid 1907] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1906] <... futex resumed>) = ? [pid 1905] <... exit_group resumed>) = ? [pid 1907] <... futex resumed>) = ? [pid 1907] +++ exited with 0 +++ [pid 1906] +++ exited with 0 +++ [pid 1905] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1905, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1908 attached , child_tidptr=0x5555564465d0) = 1908 [pid 1908] set_robust_list(0x5555564465e0, 24) = 0 [pid 1908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1908] setpgid(0, 0) = 0 [pid 1908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1908] write(3, "1000", 4) = 4 [pid 1908] close(3) = 0 [pid 1908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1908] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1908] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1909 attached , parent_tid=[1909], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1909 [pid 1908] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1908] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1909] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1909] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1909] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1909] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1908] <... futex resumed>) = 0 [pid 1908] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1908] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1909] <... futex resumed>) = 0 [pid 1909] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1909] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1908] <... futex resumed>) = 0 [pid 1908] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1908] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1909] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1909] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1908] <... futex resumed>) = 0 [pid 1908] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1908] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1909] umount2("./file0", MNT_DETACH [pid 1908] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1908] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1910], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1910 [pid 1908] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1908] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1910 attached [pid 1910] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1910] umount2("./file0", MNT_DETACH) = 0 [pid 1910] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1908] <... futex resumed>) = 0 [pid 1910] <... futex resumed>) = 1 [pid 1910] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1909] <... umount2 resumed>) = 0 [pid 1909] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1909] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1908] exit_group(0) = ? [pid 1909] <... futex resumed>) = ? [pid 1910] <... futex resumed>) = ? [pid 1909] +++ exited with 0 +++ [pid 1910] +++ exited with 0 +++ [pid 1908] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1908, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1911 ./strace-static-x86_64: Process 1911 attached [pid 1911] set_robust_list(0x5555564465e0, 24) = 0 [pid 1911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1911] setpgid(0, 0) = 0 [pid 1911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1911] write(3, "1000", 4) = 4 [pid 1911] close(3) = 0 [pid 1911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1911] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1911] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1911] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1912 attached , parent_tid=[1912], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1912 [pid 1912] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1912] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1911] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1912] <... futex resumed>) = 0 [pid 1911] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1912] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1912] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1911] <... futex resumed>) = 0 [pid 1912] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1911] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1912] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1911] <... futex resumed>) = 0 [pid 1912] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1911] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1912] <... mount resumed>) = 0 [pid 1912] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1911] <... futex resumed>) = 0 [pid 1912] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1911] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1912] <... mount resumed>) = 0 [pid 1911] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1912] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1911] <... futex resumed>) = 0 [pid 1912] umount2("./file0", MNT_DETACH [pid 1911] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1912] <... umount2 resumed>) = 0 [pid 1911] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1912] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1911] <... futex resumed>) = 0 [pid 1912] <... futex resumed>) = 0 [pid 1911] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1912] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1911] <... mmap resumed>) = 0x7fc84e05e000 [pid 1911] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1911] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1913 attached [pid 1913] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1913] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1911] <... clone resumed>, parent_tid=[1913], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1913 [pid 1911] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1913] <... futex resumed>) = 0 [pid 1911] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1913] umount2("./file0", MNT_DETACH) = 0 [pid 1913] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1913] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1911] <... futex resumed>) = 0 [pid 1911] exit_group(0) = ? [pid 1913] <... futex resumed>) = ? [pid 1912] <... futex resumed>) = ? [pid 1912] +++ exited with 0 +++ [pid 1913] +++ exited with 0 +++ [pid 1911] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1911, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1914 attached , child_tidptr=0x5555564465d0) = 1914 [pid 1914] set_robust_list(0x5555564465e0, 24) = 0 [pid 1914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1914] setpgid(0, 0) = 0 [pid 1914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1914] write(3, "1000", 4) = 4 [pid 1914] close(3) = 0 [pid 1914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1914] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1914] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1914] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1915 attached , parent_tid=[1915], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1915 [pid 1915] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1915] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1914] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1915] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1915] mkdir("./file0", 000 [pid 1914] <... futex resumed>) = 0 [pid 1915] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1914] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1915] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1914] <... futex resumed>) = 0 [pid 1915] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1914] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1915] <... mount resumed>) = 0 [pid 1914] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1915] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1914] <... futex resumed>) = 0 [pid 1915] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1914] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1915] <... mount resumed>) = 0 [pid 1914] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1915] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1914] <... futex resumed>) = 0 [pid 1915] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1914] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1915] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1914] <... futex resumed>) = 0 [pid 1915] umount2("./file0", MNT_DETACH [pid 1914] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1914] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1915] <... umount2 resumed>) = 0 [pid 1914] <... mmap resumed>) = 0x7fc84e05e000 [pid 1915] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1914] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1915] <... futex resumed>) = 0 [pid 1915] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1914] <... mprotect resumed>) = 0 [pid 1914] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1916 attached , parent_tid=[1916], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1916 [pid 1916] set_robust_list(0x7fc84e07e9e0, 24 [pid 1914] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1916] <... set_robust_list resumed>) = 0 [pid 1914] <... futex resumed>) = 0 [pid 1916] umount2("./file0", MNT_DETACH [pid 1914] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1916] <... umount2 resumed>) = 0 [pid 1916] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1916] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1914] <... futex resumed>) = 0 [pid 1914] exit_group(0) = ? [pid 1915] <... futex resumed>) = ? [pid 1916] <... futex resumed>) = ? [pid 1915] +++ exited with 0 +++ [pid 1916] +++ exited with 0 +++ [pid 1914] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1914, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1917 ./strace-static-x86_64: Process 1917 attached [pid 1917] set_robust_list(0x5555564465e0, 24) = 0 [pid 1917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1917] setpgid(0, 0) = 0 [pid 1917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1917] write(3, "1000", 4) = 4 [pid 1917] close(3) = 0 [pid 1917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1917] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1917] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1917] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1918 attached , parent_tid=[1918], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1918 [pid 1918] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1918] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1917] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1918] <... futex resumed>) = 0 [pid 1918] mkdir("./file0", 000 [pid 1917] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1918] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1918] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1918] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1917] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1917] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1918] <... futex resumed>) = 0 [pid 1918] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1917] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1918] <... mount resumed>) = 0 [pid 1918] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1918] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1917] <... futex resumed>) = 0 [pid 1917] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1917] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1918] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1918] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1917] <... futex resumed>) = 0 [pid 1918] umount2("./file0", MNT_DETACH [pid 1917] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1917] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1918] <... umount2 resumed>) = 0 [pid 1917] <... futex resumed>) = 0 [pid 1918] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1917] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1918] <... futex resumed>) = 0 [pid 1917] <... mmap resumed>) = 0x7fc84e05e000 [pid 1918] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1917] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1917] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1919 attached [pid 1919] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1919] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1917] <... clone resumed>, parent_tid=[1919], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1919 [pid 1917] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1917] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1919] <... futex resumed>) = 0 [pid 1919] umount2("./file0", MNT_DETACH) = 0 [pid 1919] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1919] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1917] <... futex resumed>) = 0 [pid 1917] exit_group(0) = ? [pid 1919] <... futex resumed>) = ? [pid 1918] <... futex resumed>) = ? [pid 1919] +++ exited with 0 +++ [pid 1918] +++ exited with 0 +++ [pid 1917] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1917, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1920 ./strace-static-x86_64: Process 1920 attached [pid 1920] set_robust_list(0x5555564465e0, 24) = 0 [pid 1920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1920] setpgid(0, 0) = 0 [pid 1920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1920] write(3, "1000", 4) = 4 [pid 1920] close(3) = 0 [pid 1920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1920] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1920] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1921], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1921 [pid 1920] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1920] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1921 attached [pid 1921] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1921] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1920] <... futex resumed>) = 0 [pid 1920] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1920] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1921] <... futex resumed>) = 1 [pid 1921] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1920] <... futex resumed>) = 0 [pid 1921] <... futex resumed>) = 1 [pid 1920] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1921] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1920] <... futex resumed>) = 0 [pid 1920] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1921] <... mount resumed>) = 0 [pid 1921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1920] <... futex resumed>) = 0 [pid 1920] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1920] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1921] umount2("./file0", MNT_DETACH [pid 1920] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1921] <... umount2 resumed>) = 0 [pid 1920] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1922], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1922 [pid 1920] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1920] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1921] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1922 attached [pid 1922] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1922] umount2("./file0", MNT_DETACH [pid 1921] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1922] <... umount2 resumed>) = 0 [pid 1922] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1920] <... futex resumed>) = 0 [pid 1920] exit_group(0) = ? [pid 1921] <... futex resumed>) = ? [pid 1921] +++ exited with 0 +++ [pid 1922] +++ exited with 0 +++ [pid 1920] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1920, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1923 attached , child_tidptr=0x5555564465d0) = 1923 [pid 1923] set_robust_list(0x5555564465e0, 24) = 0 [pid 1923] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1923] setpgid(0, 0) = 0 [pid 1923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1923] write(3, "1000", 4) = 4 [pid 1923] close(3) = 0 [pid 1923] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1923] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1923] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1923] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1924 attached , parent_tid=[1924], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1924 [pid 1923] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1923] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1924] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1924] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1924] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1923] <... futex resumed>) = 0 [pid 1923] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1924] <... futex resumed>) = 0 [pid 1924] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1923] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1924] <... mount resumed>) = 0 [pid 1924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1923] <... futex resumed>) = 0 [pid 1923] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1924] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1923] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1924] <... mount resumed>) = 0 [pid 1924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1924] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1923] <... futex resumed>) = 0 [pid 1923] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1924] <... futex resumed>) = 0 [pid 1923] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1924] umount2("./file0", MNT_DETACH [pid 1923] <... futex resumed>) = 0 [pid 1923] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1924] <... umount2 resumed>) = 0 [pid 1923] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1923] <... mprotect resumed>) = 0 [pid 1924] <... futex resumed>) = 0 [pid 1923] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1924] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1925 attached [pid 1923] <... clone resumed>, parent_tid=[1925], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1925 [pid 1925] set_robust_list(0x7fc84e07e9e0, 24 [pid 1923] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1925] <... set_robust_list resumed>) = 0 [pid 1923] <... futex resumed>) = 0 [pid 1925] umount2("./file0", MNT_DETACH [pid 1923] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1925] <... umount2 resumed>) = 0 [pid 1925] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1923] <... futex resumed>) = 0 [pid 1925] <... futex resumed>) = 1 [pid 1923] exit_group(0 [pid 1925] ????( [pid 1924] <... futex resumed>) = ? [pid 1925] <... ???? resumed>) = 0xe7 [pid 1923] <... exit_group resumed>) = ? [pid 1924] +++ exited with 0 +++ [pid 1925] +++ exited with 0 +++ [pid 1923] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1923, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1926 ./strace-static-x86_64: Process 1926 attached [pid 1926] set_robust_list(0x5555564465e0, 24) = 0 [pid 1926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1926] setpgid(0, 0) = 0 [pid 1926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1926] write(3, "1000", 4) = 4 [pid 1926] close(3) = 0 [pid 1926] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1926] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1926] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1926] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1927], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1927 [pid 1926] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1926] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1927 attached [pid 1927] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1927] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1926] <... futex resumed>) = 0 [pid 1926] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1926] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1927] <... futex resumed>) = 1 [pid 1927] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1926] <... futex resumed>) = 0 [pid 1926] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1926] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1927] <... futex resumed>) = 1 [pid 1927] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1926] <... futex resumed>) = 0 [pid 1926] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1926] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1926] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1927] <... futex resumed>) = 1 [pid 1926] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1927] umount2("./file0", MNT_DETACH [pid 1926] <... mprotect resumed>) = 0 [pid 1926] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1928 attached [pid 1927] <... umount2 resumed>) = 0 [pid 1926] <... clone resumed>, parent_tid=[1928], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1928 [pid 1928] set_robust_list(0x7fc84e07e9e0, 24 [pid 1927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1928] <... set_robust_list resumed>) = 0 [pid 1926] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1928] umount2("./file0", MNT_DETACH [pid 1927] <... futex resumed>) = 0 [pid 1926] <... futex resumed>) = 0 [pid 1927] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1926] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1928] <... umount2 resumed>) = 0 [pid 1928] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1926] <... futex resumed>) = 0 [pid 1928] <... futex resumed>) = 1 [pid 1928] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1926] exit_group(0) = ? [pid 1927] <... futex resumed>) = 231 [pid 1928] <... futex resumed>) = ? [pid 1927] +++ exited with 0 +++ [pid 1928] +++ exited with 0 +++ [pid 1926] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1926, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1929 attached , child_tidptr=0x5555564465d0) = 1929 [pid 1929] set_robust_list(0x5555564465e0, 24) = 0 [pid 1929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1929] setpgid(0, 0) = 0 [pid 1929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1929] write(3, "1000", 4) = 4 [pid 1929] close(3) = 0 [pid 1929] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1929] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1929] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1929] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1930 attached , parent_tid=[1930], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1930 [pid 1930] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1929] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1930] mkdir("./file0", 000 [pid 1929] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1930] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1929] <... futex resumed>) = 0 [pid 1930] <... futex resumed>) = 1 [pid 1929] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1930] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1929] <... futex resumed>) = 0 [pid 1929] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1930] <... mount resumed>) = 0 [pid 1930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1929] <... futex resumed>) = 0 [pid 1930] <... futex resumed>) = 1 [pid 1929] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1930] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1929] <... futex resumed>) = 0 [pid 1929] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1930] <... mount resumed>) = 0 [pid 1930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1929] <... futex resumed>) = 0 [pid 1930] umount2("./file0", MNT_DETACH [pid 1929] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1929] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1929] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1929] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1930] <... umount2 resumed>) = 0 [pid 1929] <... mprotect resumed>) = 0 [pid 1930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1929] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1930] <... futex resumed>) = 0 [pid 1930] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1929] <... clone resumed>, parent_tid=[1931], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1931 [pid 1929] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1929] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1931 attached [pid 1931] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1931] umount2("./file0", MNT_DETACH) = 0 [pid 1931] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1929] <... futex resumed>) = 0 [pid 1931] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1929] exit_group(0) = ? [pid 1930] <... futex resumed>) = ? [pid 1931] <... futex resumed>) = ? [pid 1931] +++ exited with 0 +++ [pid 1930] +++ exited with 0 +++ [pid 1929] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1929, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1932 attached , child_tidptr=0x5555564465d0) = 1932 [pid 1932] set_robust_list(0x5555564465e0, 24) = 0 [pid 1932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1932] setpgid(0, 0) = 0 [pid 1932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1932] write(3, "1000", 4) = 4 [pid 1932] close(3) = 0 [pid 1932] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1932] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1932] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1933 attached , parent_tid=[1933], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1933 [pid 1932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1933] set_robust_list(0x7fc84e09f9e0, 24 [pid 1932] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1933] <... set_robust_list resumed>) = 0 [pid 1933] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1932] <... futex resumed>) = 0 [pid 1933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1932] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1933] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1933] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1932] <... futex resumed>) = 0 [pid 1932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1932] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1933] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1932] <... futex resumed>) = 0 [pid 1932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1932] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1932] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1932] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1933] umount2("./file0", MNT_DETACH [pid 1932] <... clone resumed>, parent_tid=[1934], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1934 [pid 1932] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1932] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1934 attached [pid 1934] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1934] umount2("./file0", MNT_DETACH) = 0 [pid 1934] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1933] <... umount2 resumed>) = 0 [pid 1932] <... futex resumed>) = 0 [pid 1934] <... futex resumed>) = 1 [pid 1934] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1932] exit_group(0 [pid 1933] <... futex resumed>) = ? [pid 1932] <... exit_group resumed>) = ? [pid 1933] +++ exited with 0 +++ [pid 1934] <... futex resumed>) = ? [pid 1934] +++ exited with 0 +++ [pid 1932] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1932, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1935 attached , child_tidptr=0x5555564465d0) = 1935 [pid 1935] set_robust_list(0x5555564465e0, 24) = 0 [pid 1935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1935] setpgid(0, 0) = 0 [pid 1935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1935] write(3, "1000", 4) = 4 [pid 1935] close(3) = 0 [pid 1935] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1935] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1935] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1935] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1936 attached [pid 1936] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1935] <... clone resumed>, parent_tid=[1936], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1936 [pid 1936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1936] <... futex resumed>) = 0 [pid 1935] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1936] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1935] <... futex resumed>) = 0 [pid 1935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1935] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1936] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1935] <... futex resumed>) = 0 [pid 1936] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1935] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1936] <... mount resumed>) = 0 [pid 1936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1935] <... futex resumed>) = 0 [pid 1936] umount2("./file0", MNT_DETACH [pid 1935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1935] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1936] <... umount2 resumed>) = 0 [pid 1935] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1935] <... mmap resumed>) = 0x7fc84e05e000 [pid 1936] <... futex resumed>) = 0 [pid 1935] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1935] <... mprotect resumed>) = 0 [pid 1935] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1937 attached , parent_tid=[1937], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1937 [pid 1937] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1937] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1935] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1937] <... futex resumed>) = 0 [pid 1937] umount2("./file0", MNT_DETACH [pid 1935] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1937] <... umount2 resumed>) = 0 [pid 1937] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1935] <... futex resumed>) = 0 [pid 1937] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1935] exit_group(0 [pid 1936] <... futex resumed>) = ? [pid 1935] <... exit_group resumed>) = ? [pid 1937] <... futex resumed>) = ? [pid 1936] +++ exited with 0 +++ [pid 1937] +++ exited with 0 +++ [pid 1935] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1935, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1938 ./strace-static-x86_64: Process 1938 attached [pid 1938] set_robust_list(0x5555564465e0, 24) = 0 [pid 1938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1938] setpgid(0, 0) = 0 [pid 1938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1938] write(3, "1000", 4) = 4 [pid 1938] close(3) = 0 [pid 1938] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1938] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1938] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1939], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1939 [pid 1938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1939 attached [pid 1939] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1939] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1938] <... futex resumed>) = 0 [pid 1939] <... futex resumed>) = 1 [pid 1938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1939] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1938] <... futex resumed>) = 0 [pid 1938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1939] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1938] <... futex resumed>) = 0 [pid 1938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1938] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1939] umount2("./file0", MNT_DETACH [pid 1938] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1940], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1940 [pid 1938] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1938] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1940 attached [pid 1940] set_robust_list(0x7fc84e07e9e0, 24 [pid 1939] <... umount2 resumed>) = 0 [pid 1940] <... set_robust_list resumed>) = 0 [pid 1940] umount2("./file0", MNT_DETACH) = 0 [pid 1939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1940] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1938] <... futex resumed>) = 0 [pid 1938] exit_group(0) = ? [pid 1939] <... futex resumed>) = ? [pid 1940] <... futex resumed>) = ? [pid 1940] +++ exited with 0 +++ [pid 1939] +++ exited with 0 +++ [pid 1938] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1938, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1941 ./strace-static-x86_64: Process 1941 attached [pid 1941] set_robust_list(0x5555564465e0, 24) = 0 [pid 1941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1941] setpgid(0, 0) = 0 [pid 1941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1941] write(3, "1000", 4) = 4 [pid 1941] close(3) = 0 [pid 1941] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1941] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1941] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1942 attached , parent_tid=[1942], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1942 [pid 1942] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1942] <... futex resumed>) = 0 [pid 1942] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1941] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1942] <... futex resumed>) = 0 [pid 1942] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1941] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1942] <... mount resumed>) = 0 [pid 1942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1941] <... futex resumed>) = 0 [pid 1941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1942] <... futex resumed>) = 0 [pid 1942] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1941] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1942] <... mount resumed>) = 0 [pid 1942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1941] <... futex resumed>) = 0 [pid 1941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1942] <... futex resumed>) = 0 [pid 1941] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1942] umount2("./file0", MNT_DETACH [pid 1941] <... futex resumed>) = 0 [pid 1941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1942] <... umount2 resumed>) = 0 [pid 1941] <... mmap resumed>) = 0x7fc84e05e000 [pid 1942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1941] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1942] <... futex resumed>) = 0 [pid 1941] <... mprotect resumed>) = 0 [pid 1942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1941] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1943 attached , parent_tid=[1943], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1943 [pid 1943] set_robust_list(0x7fc84e07e9e0, 24 [pid 1941] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1943] <... set_robust_list resumed>) = 0 [pid 1941] <... futex resumed>) = 0 [pid 1943] umount2("./file0", MNT_DETACH [pid 1941] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1943] <... umount2 resumed>) = 0 [pid 1943] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1941] <... futex resumed>) = 0 [pid 1943] <... futex resumed>) = 1 [pid 1941] exit_group(0 [pid 1943] ????( [pid 1941] <... exit_group resumed>) = ? [pid 1943] <... ???? resumed>) = ? [pid 1942] <... futex resumed>) = ? [pid 1942] +++ exited with 0 +++ [pid 1943] +++ exited with 0 +++ [pid 1941] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1941, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1944 attached , child_tidptr=0x5555564465d0) = 1944 [pid 1944] set_robust_list(0x5555564465e0, 24) = 0 [pid 1944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1944] setpgid(0, 0) = 0 [pid 1944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1944] write(3, "1000", 4) = 4 [pid 1944] close(3) = 0 [pid 1944] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1944] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1944] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1945 attached , parent_tid=[1945], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1945 [pid 1944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1944] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1945] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1945] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1944] <... futex resumed>) = 0 [pid 1945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1944] <... futex resumed>) = 0 [pid 1945] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1944] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1945] <... mount resumed>) = 0 [pid 1945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1944] <... futex resumed>) = 0 [pid 1944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1944] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1945] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1944] <... futex resumed>) = 0 [pid 1944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1944] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1944] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1945] umount2("./file0", MNT_DETACH [pid 1944] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1946], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1946 [pid 1944] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1944] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1946 attached [pid 1946] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1946] umount2("./file0", MNT_DETACH) = 0 [pid 1946] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1944] <... futex resumed>) = 0 [pid 1945] <... umount2 resumed>) = 0 [pid 1946] <... futex resumed>) = 1 [pid 1946] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1944] exit_group(0) = ? [pid 1946] <... futex resumed>) = ? [pid 1945] <... futex resumed>) = ? [pid 1946] +++ exited with 0 +++ [pid 1945] +++ exited with 0 +++ [pid 1944] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1944, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1947 ./strace-static-x86_64: Process 1947 attached [pid 1947] set_robust_list(0x5555564465e0, 24) = 0 [pid 1947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1947] setpgid(0, 0) = 0 [pid 1947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1947] write(3, "1000", 4) = 4 [pid 1947] close(3) = 0 [pid 1947] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1947] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1947] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1947] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1948], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1948 [pid 1947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1947] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1948 attached [pid 1948] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1948] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1947] <... futex resumed>) = 0 [pid 1947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1948] <... futex resumed>) = 0 [pid 1947] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1948] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1947] <... futex resumed>) = 0 [pid 1947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1948] <... futex resumed>) = 0 [pid 1948] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1947] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1948] <... mount resumed>) = 0 [pid 1948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1947] <... futex resumed>) = 0 [pid 1948] umount2("./file0", MNT_DETACH [pid 1947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1947] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1947] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1947] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1947] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1948] <... umount2 resumed>) = 0 [pid 1948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1947] <... clone resumed>, parent_tid=[1949], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1949 [pid 1948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1947] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1947] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1949 attached [pid 1949] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1949] umount2("./file0", MNT_DETACH) = 0 [pid 1949] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1947] <... futex resumed>) = 0 [pid 1947] exit_group(0 [pid 1949] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = 230 [pid 1947] <... exit_group resumed>) = ? [pid 1948] <... futex resumed>) = ? [pid 1948] +++ exited with 0 +++ [pid 1949] +++ exited with 0 +++ [pid 1947] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1947, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1950 ./strace-static-x86_64: Process 1950 attached [pid 1950] set_robust_list(0x5555564465e0, 24) = 0 [pid 1950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1950] setpgid(0, 0) = 0 [pid 1950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1950] write(3, "1000", 4) = 4 [pid 1950] close(3) = 0 [pid 1950] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1950] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1950] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1951 attached , parent_tid=[1951], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1951 [pid 1950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1951] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1951] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1950] <... futex resumed>) = 0 [pid 1951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1951] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1951] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1950] <... futex resumed>) = 0 [pid 1951] <... mount resumed>) = 0 [pid 1951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1951] <... futex resumed>) = 1 [pid 1951] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1950] <... futex resumed>) = 0 [pid 1950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1951] <... mount resumed>) = 0 [pid 1951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1950] <... futex resumed>) = 0 [pid 1950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1950] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1950] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1950] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1952], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1952 [pid 1950] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1950] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1952 attached [pid 1952] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1952] umount2("./file0", MNT_DETACH [pid 1951] umount2("./file0", MNT_DETACH) = 0 [pid 1952] <... umount2 resumed>) = 0 [pid 1952] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1950] <... futex resumed>) = 0 [pid 1952] <... futex resumed>) = 1 [pid 1951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1952] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1951] <... futex resumed>) = 0 [pid 1951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1950] exit_group(0) = ? [pid 1952] <... futex resumed>) = ? [pid 1952] +++ exited with 0 +++ [pid 1951] <... futex resumed>) = ? [pid 1951] +++ exited with 0 +++ [pid 1950] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1950, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1953 ./strace-static-x86_64: Process 1953 attached [pid 1953] set_robust_list(0x5555564465e0, 24) = 0 [pid 1953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1953] setpgid(0, 0) = 0 [pid 1953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1953] write(3, "1000", 4) = 4 [pid 1953] close(3) = 0 [pid 1953] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1953] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1953] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1953] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1954 attached , parent_tid=[1954], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1954 [pid 1953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1953] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1954] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1954] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1953] <... futex resumed>) = 0 [pid 1954] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1953] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1954] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1953] <... futex resumed>) = 0 [pid 1954] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1953] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1954] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1953] <... futex resumed>) = 0 [pid 1953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1953] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1953] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1953] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1954] umount2("./file0", MNT_DETACH [pid 1953] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1954] <... umount2 resumed>) = 0 [pid 1953] <... clone resumed>, parent_tid=[1955], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1955 [pid 1953] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1953] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1955 attached [pid 1955] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1955] umount2("./file0", MNT_DETACH) = 0 [pid 1954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1955] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1954] <... futex resumed>) = 0 [pid 1955] <... futex resumed>) = 1 [pid 1954] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1953] <... futex resumed>) = 0 [pid 1953] exit_group(0) = ? [pid 1954] <... futex resumed>) = ? [pid 1954] +++ exited with 0 +++ [pid 1955] +++ exited with 0 +++ [pid 1953] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1953, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1956 attached , child_tidptr=0x5555564465d0) = 1956 [pid 1956] set_robust_list(0x5555564465e0, 24) = 0 [pid 1956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1956] setpgid(0, 0) = 0 [pid 1956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1956] write(3, "1000", 4) = 4 [pid 1956] close(3) = 0 [pid 1956] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1956] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1956] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1957], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1957 [pid 1956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1957 attached ) = 0 [pid 1956] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1957] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1957] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1956] <... futex resumed>) = 0 [pid 1956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1956] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1957] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1956] <... futex resumed>) = 0 [pid 1957] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1956] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1957] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1957] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1956] <... futex resumed>) = 0 [pid 1957] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1956] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1957] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1956] <... futex resumed>) = 0 [pid 1957] umount2("./file0", MNT_DETACH [pid 1956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1956] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1956] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1957] <... umount2 resumed>) = 0 [pid 1956] <... clone resumed>, parent_tid=[1958], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1958 ./strace-static-x86_64: Process 1958 attached [pid 1958] set_robust_list(0x7fc84e07e9e0, 24 [pid 1957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1956] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1958] <... set_robust_list resumed>) = 0 [pid 1958] umount2("./file0", MNT_DETACH [pid 1957] <... futex resumed>) = 0 [pid 1956] <... futex resumed>) = 0 [pid 1956] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1957] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1958] <... umount2 resumed>) = 0 [pid 1958] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1958] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1956] exit_group(0) = ? [pid 1957] <... futex resumed>) = ? [pid 1958] <... futex resumed>) = ? [pid 1957] +++ exited with 0 +++ [pid 1958] +++ exited with 0 +++ [pid 1956] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1956, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1959 attached , child_tidptr=0x5555564465d0) = 1959 [pid 1959] set_robust_list(0x5555564465e0, 24) = 0 [pid 1959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1959] setpgid(0, 0) = 0 [pid 1959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1959] write(3, "1000", 4) = 4 [pid 1959] close(3) = 0 [pid 1959] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1959] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1959] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1959] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1960 attached , parent_tid=[1960], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1960 [pid 1960] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1960] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1960] <... futex resumed>) = 0 [pid 1959] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1960] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1959] <... futex resumed>) = 0 [pid 1959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1959] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1960] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1959] <... futex resumed>) = 0 [pid 1960] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1960] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1959] <... futex resumed>) = 0 [pid 1960] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1959] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1960] <... mount resumed>) = 0 [pid 1960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1959] <... futex resumed>) = 0 [pid 1959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1960] umount2("./file0", MNT_DETACH [pid 1959] <... futex resumed>) = 0 [pid 1959] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1960] <... umount2 resumed>) = 0 [pid 1959] <... futex resumed>) = 0 [pid 1960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1959] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1960] <... futex resumed>) = 0 [pid 1959] <... mmap resumed>) = 0x7fc84e05e000 [pid 1960] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1959] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1959] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1961 attached , parent_tid=[1961], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1961 [pid 1961] set_robust_list(0x7fc84e07e9e0, 24 [pid 1959] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1961] <... set_robust_list resumed>) = 0 [pid 1959] <... futex resumed>) = 0 [pid 1961] umount2("./file0", MNT_DETACH [pid 1959] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1961] <... umount2 resumed>) = 0 [pid 1961] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1959] <... futex resumed>) = 0 [pid 1961] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1959] exit_group(0) = ? [pid 1960] <... futex resumed>) = 231 [pid 1961] <... futex resumed>) = ? [pid 1960] +++ exited with 0 +++ [pid 1961] +++ exited with 0 +++ [pid 1959] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1959, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1962 ./strace-static-x86_64: Process 1962 attached [pid 1962] set_robust_list(0x5555564465e0, 24) = 0 [pid 1962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1962] setpgid(0, 0) = 0 [pid 1962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1962] write(3, "1000", 4) = 4 [pid 1962] close(3) = 0 [pid 1962] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1962] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1962] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1963 attached , parent_tid=[1963], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1963 [pid 1962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1962] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1963] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1963] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1963] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1962] <... futex resumed>) = 0 [pid 1962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1963] <... futex resumed>) = 0 [pid 1962] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1963] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1962] <... futex resumed>) = 0 [pid 1963] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1962] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1963] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1962] <... futex resumed>) = 0 [pid 1962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1962] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1962] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1963] umount2("./file0", MNT_DETACH [pid 1962] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1964 attached [pid 1963] <... umount2 resumed>) = 0 [pid 1962] <... clone resumed>, parent_tid=[1964], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1964 [pid 1962] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1962] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1964] set_robust_list(0x7fc84e07e9e0, 24 [pid 1963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1964] <... set_robust_list resumed>) = 0 [pid 1963] <... futex resumed>) = 0 [pid 1964] umount2("./file0", MNT_DETACH [pid 1963] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1964] <... umount2 resumed>) = 0 [pid 1964] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1962] <... futex resumed>) = 0 [pid 1962] exit_group(0) = ? [pid 1963] <... futex resumed>) = ? [pid 1963] +++ exited with 0 +++ [pid 1964] +++ exited with 0 +++ [pid 1962] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1962, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1965 ./strace-static-x86_64: Process 1965 attached [pid 1965] set_robust_list(0x5555564465e0, 24) = 0 [pid 1965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1965] setpgid(0, 0) = 0 [pid 1965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1965] write(3, "1000", 4) = 4 [pid 1965] close(3) = 0 [pid 1965] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1965] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1965] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1966 attached [pid 1966] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1966] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1965] <... clone resumed>, parent_tid=[1966], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1966 [pid 1965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1966] <... futex resumed>) = 0 [pid 1966] mkdir("./file0", 000 [pid 1965] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1966] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1966] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1966] <... futex resumed>) = 0 [pid 1966] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1965] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1966] <... mount resumed>) = 0 [pid 1966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1965] <... futex resumed>) = 0 [pid 1965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1965] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1966] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1965] <... futex resumed>) = 0 [pid 1965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1965] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1965] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1965] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1966] umount2("./file0", MNT_DETACH [pid 1965] <... clone resumed>, parent_tid=[1967], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1967 [pid 1965] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1965] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1967 attached [pid 1966] <... umount2 resumed>) = 0 [pid 1967] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1967] umount2("./file0", MNT_DETACH [pid 1966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1967] <... umount2 resumed>) = 0 [pid 1967] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1965] <... futex resumed>) = 0 [pid 1965] exit_group(0) = ? [pid 1967] <... futex resumed>) = ? [pid 1966] <... futex resumed>) = ? [pid 1967] +++ exited with 0 +++ [pid 1966] +++ exited with 0 +++ [pid 1965] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1965, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1968 ./strace-static-x86_64: Process 1968 attached [pid 1968] set_robust_list(0x5555564465e0, 24) = 0 [pid 1968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1968] setpgid(0, 0) = 0 [pid 1968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1968] write(3, "1000", 4) = 4 [pid 1968] close(3) = 0 [pid 1968] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1968] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1968] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1969 attached , parent_tid=[1969], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1969 [pid 1969] set_robust_list(0x7fc84e09f9e0, 24 [pid 1968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1968] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1969] <... set_robust_list resumed>) = 0 [pid 1969] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1968] <... futex resumed>) = 0 [pid 1969] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1968] <... futex resumed>) = 0 [pid 1969] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1968] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1969] <... mount resumed>) = 0 [pid 1969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1968] <... futex resumed>) = 0 [pid 1968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1969] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1968] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1969] <... mount resumed>) = 0 [pid 1969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1968] <... futex resumed>) = 0 [pid 1968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1968] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1968] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1969] umount2("./file0", MNT_DETACH [pid 1968] <... mprotect resumed>) = 0 [pid 1968] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1969] <... umount2 resumed>) = 0 [pid 1968] <... clone resumed>, parent_tid=[1970], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1970 [pid 1969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1968] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1968] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1970 attached [pid 1970] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1970] umount2("./file0", MNT_DETACH [pid 1969] <... futex resumed>) = 0 [pid 1970] <... umount2 resumed>) = 0 [pid 1969] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1970] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1968] <... futex resumed>) = 0 [pid 1968] exit_group(0) = ? [pid 1969] <... futex resumed>) = ? [pid 1970] <... futex resumed>) = ? [pid 1969] +++ exited with 0 +++ [pid 1970] +++ exited with 0 +++ [pid 1968] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1968, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1971 attached , child_tidptr=0x5555564465d0) = 1971 [pid 1971] set_robust_list(0x5555564465e0, 24) = 0 [pid 1971] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1971] setpgid(0, 0) = 0 [pid 1971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1971] write(3, "1000", 4) = 4 [pid 1971] close(3) = 0 [pid 1971] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1971] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1971] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1971] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1972 attached , parent_tid=[1972], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1972 [pid 1972] set_robust_list(0x7fc84e09f9e0, 24 [pid 1971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1972] <... set_robust_list resumed>) = 0 [pid 1972] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1971] <... futex resumed>) = 0 [pid 1972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1972] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1971] <... futex resumed>) = 0 [pid 1972] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1972] <... mount resumed>) = 0 [pid 1972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1971] <... futex resumed>) = 0 [pid 1972] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1972] <... mount resumed>) = 0 [pid 1971] <... futex resumed>) = 0 [pid 1971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1971] <... futex resumed>) = 0 [pid 1971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1971] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1972] umount2("./file0", MNT_DETACH [pid 1971] <... futex resumed>) = 0 [pid 1971] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1971] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1971] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1973], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1973 [pid 1971] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1971] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1973 attached [pid 1973] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1973] umount2("./file0", MNT_DETACH) = 0 [pid 1973] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1971] <... futex resumed>) = 0 [pid 1973] <... futex resumed>) = 1 [pid 1973] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1972] <... umount2 resumed>) = 0 [pid 1972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1971] exit_group(0) = ? [pid 1972] <... futex resumed>) = ? [pid 1973] <... futex resumed>) = ? [pid 1972] +++ exited with 0 +++ [pid 1973] +++ exited with 0 +++ [pid 1971] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1971, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1974 attached , child_tidptr=0x5555564465d0) = 1974 [pid 1974] set_robust_list(0x5555564465e0, 24) = 0 [pid 1974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1974] setpgid(0, 0) = 0 [pid 1974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1974] write(3, "1000", 4) = 4 [pid 1974] close(3) = 0 [pid 1974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1974] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1974] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1975], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1975 ./strace-static-x86_64: Process 1975 attached [pid 1975] set_robust_list(0x7fc84e09f9e0, 24 [pid 1974] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1974] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1975] <... set_robust_list resumed>) = 0 [pid 1975] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1975] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1974] <... futex resumed>) = 0 [pid 1974] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1974] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1975] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1975] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1974] <... futex resumed>) = 0 [pid 1974] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1974] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1975] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1975] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1974] <... futex resumed>) = 0 [pid 1974] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1974] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1974] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1974] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1975] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 1976 attached [pid 1976] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1975] <... umount2 resumed>) = 0 [pid 1974] <... clone resumed>, parent_tid=[1976], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1976 [pid 1976] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1975] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1974] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1975] <... futex resumed>) = 0 [pid 1974] <... futex resumed>) = 1 [pid 1976] <... futex resumed>) = 0 [pid 1976] umount2("./file0", MNT_DETACH [pid 1975] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1974] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1976] <... umount2 resumed>) = 0 [pid 1976] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1976] <... futex resumed>) = 0 [pid 1974] exit_group(0 [pid 1976] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1975] <... futex resumed>) = ? [pid 1974] <... exit_group resumed>) = ? [pid 1976] <... futex resumed>) = ? [pid 1976] +++ exited with 0 +++ [pid 1975] +++ exited with 0 +++ [pid 1974] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1974, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1977 attached , child_tidptr=0x5555564465d0) = 1977 [pid 1977] set_robust_list(0x5555564465e0, 24) = 0 [pid 1977] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1977] setpgid(0, 0) = 0 [pid 1977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1977] write(3, "1000", 4) = 4 [pid 1977] close(3) = 0 [pid 1977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1977] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1977] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1977] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1978 attached , parent_tid=[1978], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1978 [pid 1977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1977] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1978] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1978] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1977] <... futex resumed>) = 0 [pid 1977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1977] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1978] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1977] <... futex resumed>) = 0 [pid 1977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1977] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1978] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1977] <... futex resumed>) = 0 [pid 1977] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1977] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1977] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1977] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1977] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1978] umount2("./file0", MNT_DETACH [pid 1977] <... clone resumed>, parent_tid=[1979], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1979 [pid 1977] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1978] <... umount2 resumed>) = 0 [pid 1977] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1979 attached [pid 1979] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1979] umount2("./file0", MNT_DETACH [pid 1978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1978] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1979] <... umount2 resumed>) = 0 [pid 1979] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1977] <... futex resumed>) = 0 [pid 1979] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1977] exit_group(0) = ? [pid 1979] <... futex resumed>) = ? [pid 1979] +++ exited with 0 +++ [pid 1978] <... futex resumed>) = ? [pid 1978] +++ exited with 0 +++ [pid 1977] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1977, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1980 ./strace-static-x86_64: Process 1980 attached [pid 1980] set_robust_list(0x5555564465e0, 24) = 0 [pid 1980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1980] setpgid(0, 0) = 0 [pid 1980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1980] write(3, "1000", 4) = 4 [pid 1980] close(3) = 0 [pid 1980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1980] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1980] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1981 attached , parent_tid=[1981], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1981 [pid 1980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1980] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1981] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1981] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1980] <... futex resumed>) = 0 [pid 1980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1980] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1981] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1981] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1980] <... futex resumed>) = 0 [pid 1980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1981] <... futex resumed>) = 0 [pid 1981] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1981] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1980] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 1980] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1981] <... futex resumed>) = 0 [pid 1981] umount2("./file0", MNT_DETACH [pid 1980] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1981] <... umount2 resumed>) = 0 [pid 1980] <... futex resumed>) = 0 [pid 1981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1981] <... futex resumed>) = 0 [pid 1980] <... mmap resumed>) = 0x7fc84e05e000 [pid 1981] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1980] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1980] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1982 attached , parent_tid=[1982], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1982 [pid 1982] set_robust_list(0x7fc84e07e9e0, 24 [pid 1980] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1982] <... set_robust_list resumed>) = 0 [pid 1982] umount2("./file0", MNT_DETACH [pid 1980] <... futex resumed>) = 0 [pid 1982] <... umount2 resumed>) = 0 [pid 1980] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1982] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1982] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1980] <... futex resumed>) = 0 [pid 1980] exit_group(0 [pid 1981] <... futex resumed>) = ? [pid 1980] <... exit_group resumed>) = ? [pid 1982] <... futex resumed>) = ? [pid 1982] +++ exited with 0 +++ [pid 1981] +++ exited with 0 +++ [pid 1980] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1980, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1983 attached , child_tidptr=0x5555564465d0) = 1983 [pid 1983] set_robust_list(0x5555564465e0, 24) = 0 [pid 1983] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1983] setpgid(0, 0) = 0 [pid 1983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1983] write(3, "1000", 4) = 4 [pid 1983] close(3) = 0 [pid 1983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1983] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1983] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1984 attached , parent_tid=[1984], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1984 [pid 1983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1984] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1984] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1983] <... futex resumed>) = 0 [pid 1983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1984] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1983] <... futex resumed>) = 0 [pid 1983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1984] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1983] <... futex resumed>) = 0 [pid 1983] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1983] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1984] umount2("./file0", MNT_DETACH [pid 1983] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1985], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1985 [pid 1983] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1983] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1985 attached [pid 1985] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1985] umount2("./file0", MNT_DETACH) = 0 [pid 1985] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1983] <... futex resumed>) = 0 [pid 1985] <... futex resumed>) = 1 [pid 1985] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1984] <... umount2 resumed>) = 0 [pid 1984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1984] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1983] exit_group(0) = ? [pid 1984] <... futex resumed>) = ? [pid 1985] <... futex resumed>) = ? [pid 1985] +++ exited with 0 +++ [pid 1984] +++ exited with 0 +++ [pid 1983] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1983, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1986 attached , child_tidptr=0x5555564465d0) = 1986 [pid 1986] set_robust_list(0x5555564465e0, 24) = 0 [pid 1986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1986] setpgid(0, 0) = 0 [pid 1986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1986] write(3, "1000", 4) = 4 [pid 1986] close(3) = 0 [pid 1986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1986] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1986] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1987 attached [pid 1987] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1987] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1986] <... clone resumed>, parent_tid=[1987], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1987 [pid 1986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1987] <... futex resumed>) = 0 [pid 1986] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1987] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1986] <... futex resumed>) = 0 [pid 1986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1986] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1987] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1986] <... futex resumed>) = 0 [pid 1986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1986] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1987] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1986] <... futex resumed>) = 0 [pid 1986] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1986] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1986] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1986] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1988], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1988 [pid 1986] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1986] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1988 attached [pid 1988] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1988] umount2("./file0", MNT_DETACH [pid 1987] umount2("./file0", MNT_DETACH [pid 1988] <... umount2 resumed>) = 0 [pid 1988] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1986] <... futex resumed>) = 0 [pid 1988] <... futex resumed>) = 1 [pid 1988] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1987] <... umount2 resumed>) = 0 [pid 1987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1987] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1986] exit_group(0) = ? [pid 1988] <... futex resumed>) = ? [pid 1987] <... futex resumed>) = ? [pid 1988] +++ exited with 0 +++ [pid 1987] +++ exited with 0 +++ [pid 1986] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1986, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1989 attached , child_tidptr=0x5555564465d0) = 1989 [pid 1989] set_robust_list(0x5555564465e0, 24) = 0 [pid 1989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1989] setpgid(0, 0) = 0 [pid 1989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1989] write(3, "1000", 4) = 4 [pid 1989] close(3) = 0 [pid 1989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1989] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1989] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1989] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1990], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1990 [pid 1989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1989] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1990 attached [pid 1990] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1990] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1989] <... futex resumed>) = 0 [pid 1990] mount(NULL, "./file0", "ramfs", 0, NULL [pid 1989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1990] <... mount resumed>) = 0 [pid 1989] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1989] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1990] <... futex resumed>) = 0 [pid 1989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1990] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1989] <... futex resumed>) = 0 [pid 1989] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1990] <... mount resumed>) = 0 [pid 1990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1989] <... futex resumed>) = 0 [pid 1990] umount2("./file0", MNT_DETACH [pid 1989] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1990] <... umount2 resumed>) = 0 [pid 1989] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1989] <... futex resumed>) = 0 [pid 1990] <... futex resumed>) = 0 [pid 1989] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1990] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1989] <... mmap resumed>) = 0x7fc84e05e000 [pid 1989] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1989] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1991 attached , parent_tid=[1991], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1991 [pid 1991] set_robust_list(0x7fc84e07e9e0, 24 [pid 1989] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1989] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1991] <... set_robust_list resumed>) = 0 [pid 1991] umount2("./file0", MNT_DETACH) = 0 [pid 1991] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1989] <... futex resumed>) = 0 [pid 1991] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1989] exit_group(0 [pid 1991] <... futex resumed>) = ? [pid 1990] <... futex resumed>) = ? [pid 1989] <... exit_group resumed>) = ? [pid 1991] +++ exited with 0 +++ [pid 1990] +++ exited with 0 +++ [pid 1989] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1989, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1992 attached , child_tidptr=0x5555564465d0) = 1992 [pid 1992] set_robust_list(0x5555564465e0, 24) = 0 [pid 1992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1992] setpgid(0, 0) = 0 [pid 1992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1992] write(3, "1000", 4) = 4 [pid 1992] close(3) = 0 [pid 1992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1992] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1992] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1993 attached , parent_tid=[1993], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1993 [pid 1993] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1993] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1993] <... futex resumed>) = 0 [pid 1993] mkdir("./file0", 000 [pid 1992] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1993] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 1993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1992] <... futex resumed>) = 0 [pid 1992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1992] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1993] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1992] <... futex resumed>) = 0 [pid 1993] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1992] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1993] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1993] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1992] <... futex resumed>) = 0 [pid 1992] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1992] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1992] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1992] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1993] umount2("./file0", MNT_DETACH [pid 1992] <... clone resumed>, parent_tid=[1994], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1994 [pid 1992] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1992] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1994 attached [pid 1993] <... umount2 resumed>) = 0 [pid 1994] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1994] umount2("./file0", MNT_DETACH [pid 1993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1994] <... umount2 resumed>) = 0 [pid 1993] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1994] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1992] <... futex resumed>) = 0 [pid 1992] exit_group(0) = ? [pid 1994] <... futex resumed>) = ? [pid 1993] <... futex resumed>) = ? [pid 1994] +++ exited with 0 +++ [pid 1993] +++ exited with 0 +++ [pid 1992] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1992, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1995 attached , child_tidptr=0x5555564465d0) = 1995 [pid 1995] set_robust_list(0x5555564465e0, 24) = 0 [pid 1995] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1995] setpgid(0, 0) = 0 [pid 1995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1995] write(3, "1000", 4) = 4 [pid 1995] close(3) = 0 [pid 1995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1995] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1995] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1995] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 1996 attached , parent_tid=[1996], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1996 [pid 1996] set_robust_list(0x7fc84e09f9e0, 24 [pid 1995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1996] <... set_robust_list resumed>) = 0 [pid 1995] <... futex resumed>) = 0 [pid 1995] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1996] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1995] <... futex resumed>) = 0 [pid 1995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1995] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1996] <... futex resumed>) = 1 [pid 1996] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1995] <... futex resumed>) = 0 [pid 1995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1995] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1996] <... futex resumed>) = 1 [pid 1996] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 1996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1995] <... futex resumed>) = 0 [pid 1995] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1995] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1996] <... futex resumed>) = 1 [pid 1995] <... futex resumed>) = 0 [pid 1996] umount2("./file0", MNT_DETACH [pid 1995] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1996] <... umount2 resumed>) = 0 [pid 1995] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1996] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1995] <... mprotect resumed>) = 0 [pid 1995] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1997], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 1997 [pid 1996] <... futex resumed>) = 0 [pid 1995] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1996] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1995] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1997 attached [pid 1995] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1997] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 1997] umount2("./file0", MNT_DETACH) = 0 [pid 1997] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1995] <... futex resumed>) = 0 [pid 1995] exit_group(0) = ? [pid 1996] <... futex resumed>) = ? [pid 1996] +++ exited with 0 +++ [pid 1997] <... futex resumed>) = ? [pid 1997] +++ exited with 0 +++ [pid 1995] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1995, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 1998 ./strace-static-x86_64: Process 1998 attached [pid 1998] set_robust_list(0x5555564465e0, 24) = 0 [pid 1998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1998] setpgid(0, 0) = 0 [pid 1998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1998] write(3, "1000", 4) = 4 [pid 1998] close(3) = 0 [pid 1998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 1998] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1998] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1999], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 1999 [pid 1998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1998] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1999 attached [pid 1999] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 1999] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 1999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1998] <... futex resumed>) = 0 [pid 1998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1998] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1999] <... futex resumed>) = 1 [pid 1999] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 1999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1998] <... futex resumed>) = 0 [pid 1999] <... futex resumed>) = 1 [pid 1998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1999] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 1998] <... futex resumed>) = 0 [pid 1998] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1999] <... mount resumed>) = 0 [pid 1999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1998] <... futex resumed>) = 0 [pid 1999] <... futex resumed>) = 1 [pid 1998] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1999] umount2("./file0", MNT_DETACH [pid 1998] <... futex resumed>) = 0 [pid 1998] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 1998] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 1999] <... umount2 resumed>) = 0 [pid 1998] <... mprotect resumed>) = 0 [pid 1999] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 1998] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 1999] <... futex resumed>) = 0 [pid 1999] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2000 attached [pid 2000] set_robust_list(0x7fc84e07e9e0, 24 [pid 1998] <... clone resumed>, parent_tid=[2000], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2000 [pid 2000] <... set_robust_list resumed>) = 0 [pid 1998] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2000] umount2("./file0", MNT_DETACH [pid 1998] <... futex resumed>) = 0 [pid 1998] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2000] <... umount2 resumed>) = 0 [pid 2000] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1998] <... futex resumed>) = 0 [pid 2000] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1998] exit_group(0) = ? [pid 1999] <... futex resumed>) = ? [pid 1999] +++ exited with 0 +++ [pid 2000] <... futex resumed>) = ? [pid 2000] +++ exited with 0 +++ [pid 1998] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1998, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2001 attached , child_tidptr=0x5555564465d0) = 2001 [pid 2001] set_robust_list(0x5555564465e0, 24) = 0 [pid 2001] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2001] setpgid(0, 0) = 0 [pid 2001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2001] write(3, "1000", 4) = 4 [pid 2001] close(3) = 0 [pid 2001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2001] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2001] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2001] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2002 attached [pid 2002] set_robust_list(0x7fc84e09f9e0, 24 [pid 2001] <... clone resumed>, parent_tid=[2002], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2002 [pid 2002] <... set_robust_list resumed>) = 0 [pid 2001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2002] mkdir("./file0", 000 [pid 2001] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2002] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2001] <... futex resumed>) = 0 [pid 2001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2001] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2002] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2001] <... futex resumed>) = 0 [pid 2001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2001] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2002] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2001] <... futex resumed>) = 0 [pid 2001] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2001] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2001] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2001] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2001] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2002] umount2("./file0", MNT_DETACH [pid 2001] <... clone resumed>, parent_tid=[2003], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2003 [pid 2001] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2001] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2003 attached [pid 2003] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2003] umount2("./file0", MNT_DETACH) = 0 [pid 2002] <... umount2 resumed>) = 0 [pid 2003] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2001] <... futex resumed>) = 0 [pid 2003] <... futex resumed>) = 1 [pid 2002] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2003] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2002] <... futex resumed>) = 0 [pid 2002] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2001] exit_group(0) = ? [pid 2002] <... futex resumed>) = ? [pid 2002] +++ exited with 0 +++ [pid 2003] <... futex resumed>) = ? [pid 2003] +++ exited with 0 +++ [pid 2001] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2001, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2004 ./strace-static-x86_64: Process 2004 attached [pid 2004] set_robust_list(0x5555564465e0, 24) = 0 [pid 2004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2004] setpgid(0, 0) = 0 [pid 2004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2004] write(3, "1000", 4) = 4 [pid 2004] close(3) = 0 [pid 2004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2004] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2004] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2005 attached [pid 2005] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2005] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2004] <... clone resumed>, parent_tid=[2005], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2005 [pid 2004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2005] <... futex resumed>) = 0 [pid 2004] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2005] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2004] <... futex resumed>) = 0 [pid 2005] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2005] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2004] <... futex resumed>) = 0 [pid 2005] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2004] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2005] <... mount resumed>) = 0 [pid 2005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2004] <... futex resumed>) = 0 [pid 2005] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2005] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2004] <... futex resumed>) = 0 [pid 2005] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2004] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2005] <... mount resumed>) = 0 [pid 2005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2004] <... futex resumed>) = 0 [pid 2004] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2004] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2004] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2004] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2005] umount2("./file0", MNT_DETACH [pid 2004] <... clone resumed>, parent_tid=[2006], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2006 [pid 2004] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2005] <... umount2 resumed>) = 0 [pid 2004] <... futex resumed>) = 0 [pid 2005] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2004] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2006 attached [pid 2005] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2006] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2006] umount2("./file0", MNT_DETACH) = 0 [pid 2006] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2004] <... futex resumed>) = 0 [pid 2004] exit_group(0 [pid 2006] ????() = 0xe7 [pid 2004] <... exit_group resumed>) = ? [pid 2005] <... futex resumed>) = ? [pid 2005] +++ exited with 0 +++ [pid 2006] +++ exited with 0 +++ [pid 2004] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2004, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2007 attached , child_tidptr=0x5555564465d0) = 2007 [pid 2007] set_robust_list(0x5555564465e0, 24) = 0 [pid 2007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2007] setpgid(0, 0) = 0 [pid 2007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2007] write(3, "1000", 4) = 4 [pid 2007] close(3) = 0 [pid 2007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2007] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2007] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2007] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2008 attached , parent_tid=[2008], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2008 [pid 2008] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2008] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2008] <... futex resumed>) = 0 [pid 2007] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2008] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2007] <... futex resumed>) = 0 [pid 2008] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2008] <... mount resumed>) = 0 [pid 2007] <... futex resumed>) = 0 [pid 2008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2007] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2008] <... futex resumed>) = 0 [pid 2007] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2008] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2007] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2008] <... mount resumed>) = 0 [pid 2008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2007] <... futex resumed>) = 0 [pid 2008] umount2("./file0", MNT_DETACH [pid 2007] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2007] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2008] <... umount2 resumed>) = 0 [pid 2008] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2007] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2008] <... futex resumed>) = 0 [pid 2007] <... mmap resumed>) = 0x7fc84e05e000 [pid 2008] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2007] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2007] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2009 attached , parent_tid=[2009], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2009 [pid 2009] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2009] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2007] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2009] <... futex resumed>) = 0 [pid 2009] umount2("./file0", MNT_DETACH [pid 2007] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2009] <... umount2 resumed>) = 0 [pid 2009] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2007] <... futex resumed>) = 0 [pid 2007] exit_group(0) = ? [pid 2008] <... futex resumed>) = ? [pid 2008] +++ exited with 0 +++ [pid 2009] +++ exited with 0 +++ [pid 2007] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2007, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2010 attached , child_tidptr=0x5555564465d0) = 2010 [pid 2010] set_robust_list(0x5555564465e0, 24) = 0 [pid 2010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2010] setpgid(0, 0) = 0 [pid 2010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2010] write(3, "1000", 4) = 4 [pid 2010] close(3) = 0 [pid 2010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2010] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2010] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2011 attached , parent_tid=[2011], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2011 [pid 2010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2010] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2011] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2011] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2010] <... futex resumed>) = 0 [pid 2011] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2010] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2011] <... futex resumed>) = 0 [pid 2011] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2010] <... futex resumed>) = 0 [pid 2010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2010] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2011] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2010] <... futex resumed>) = 0 [pid 2010] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2010] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2010] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2010] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2011] umount2("./file0", MNT_DETACH) = 0 [pid 2010] <... clone resumed>, parent_tid=[2012], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2012 [pid 2011] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2010] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2010] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2012 attached [pid 2012] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2012] umount2("./file0", MNT_DETACH [pid 2011] <... futex resumed>) = 0 [pid 2011] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2012] <... umount2 resumed>) = 0 [pid 2012] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2010] <... futex resumed>) = 0 [pid 2010] exit_group(0) = ? [pid 2011] <... futex resumed>) = ? [pid 2011] +++ exited with 0 +++ [pid 2012] <... futex resumed>) = ? [pid 2012] +++ exited with 0 +++ [pid 2010] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2010, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2013 attached , child_tidptr=0x5555564465d0) = 2013 [pid 2013] set_robust_list(0x5555564465e0, 24) = 0 [pid 2013] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2013] setpgid(0, 0) = 0 [pid 2013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2013] write(3, "1000", 4) = 4 [pid 2013] close(3) = 0 [pid 2013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2013] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2013] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2013] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2014], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2014 [pid 2013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2013] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2014 attached [pid 2014] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2014] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2013] <... futex resumed>) = 0 [pid 2014] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2014] <... mount resumed>) = 0 [pid 2013] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2013] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2014] <... futex resumed>) = 0 [pid 2013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2014] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2013] <... futex resumed>) = 0 [pid 2013] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2014] <... mount resumed>) = 0 [pid 2014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2013] <... futex resumed>) = 0 [pid 2014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2013] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2014] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2013] <... futex resumed>) = 0 [pid 2014] umount2("./file0", MNT_DETACH [pid 2013] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2014] <... umount2 resumed>) = 0 [pid 2013] <... futex resumed>) = 0 [pid 2014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2014] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2013] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2013] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2013] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2015 attached , parent_tid=[2015], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2015 [pid 2015] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2015] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2013] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2015] <... futex resumed>) = 0 [pid 2013] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2015] umount2("./file0", MNT_DETACH) = 0 [pid 2015] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2013] <... futex resumed>) = 0 [pid 2013] exit_group(0) = ? [pid 2014] <... futex resumed>) = ? [pid 2015] <... futex resumed>) = ? [pid 2015] +++ exited with 0 +++ [pid 2014] +++ exited with 0 +++ [pid 2013] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2013, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2016 attached , child_tidptr=0x5555564465d0) = 2016 [pid 2016] set_robust_list(0x5555564465e0, 24) = 0 [pid 2016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2016] setpgid(0, 0) = 0 [pid 2016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2016] write(3, "1000", 4) = 4 [pid 2016] close(3) = 0 [pid 2016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2016] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2016] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2017 attached , parent_tid=[2017], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2017 [pid 2017] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2017] <... futex resumed>) = 0 [pid 2017] mkdir("./file0", 000 [pid 2016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2017] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2016] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2017] <... futex resumed>) = 0 [pid 2017] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2017] <... mount resumed>) = 0 [pid 2017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2016] <... futex resumed>) = 0 [pid 2016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2016] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2017] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2016] <... futex resumed>) = 0 [pid 2016] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2016] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2016] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2016] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2017] umount2("./file0", MNT_DETACH [pid 2016] <... clone resumed>, parent_tid=[2018], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2018 [pid 2016] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2016] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2018 attached [pid 2018] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2018] umount2("./file0", MNT_DETACH) = 0 [pid 2017] <... umount2 resumed>) = 0 [pid 2018] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2016] <... futex resumed>) = 0 [pid 2018] <... futex resumed>) = 1 [pid 2017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2018] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2017] <... futex resumed>) = 0 [pid 2017] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2016] exit_group(0) = ? [pid 2018] <... futex resumed>) = ? [pid 2017] <... futex resumed>) = ? [pid 2018] +++ exited with 0 +++ [pid 2017] +++ exited with 0 +++ [pid 2016] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2016, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2019 attached , child_tidptr=0x5555564465d0) = 2019 [pid 2019] set_robust_list(0x5555564465e0, 24) = 0 [pid 2019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2019] setpgid(0, 0) = 0 [pid 2019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2019] write(3, "1000", 4) = 4 [pid 2019] close(3) = 0 [pid 2019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2019] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2019] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2020], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2020 [pid 2019] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2020 attached [pid 2020] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2020] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2020] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2019] <... futex resumed>) = 0 [pid 2019] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2020] <... futex resumed>) = 1 [pid 2020] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2020] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2019] <... futex resumed>) = 0 [pid 2019] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2020] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2020] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2019] <... futex resumed>) = 0 [pid 2019] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2019] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2019] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2021], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2021 [pid 2020] umount2("./file0", MNT_DETACH [pid 2019] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2019] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2021 attached [pid 2021] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2021] umount2("./file0", MNT_DETACH [pid 2020] <... umount2 resumed>) = 0 [pid 2020] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2021] <... umount2 resumed>) = 0 [pid 2021] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2019] <... futex resumed>) = 0 [pid 2019] exit_group(0) = ? [pid 2020] <... futex resumed>) = 231 [pid 2021] <... futex resumed>) = ? [pid 2021] +++ exited with 0 +++ [pid 2020] +++ exited with 0 +++ [pid 2019] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2019, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2022 ./strace-static-x86_64: Process 2022 attached [pid 2022] set_robust_list(0x5555564465e0, 24) = 0 [pid 2022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2022] setpgid(0, 0) = 0 [pid 2022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2022] write(3, "1000", 4) = 4 [pid 2022] close(3) = 0 [pid 2022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2022] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2022] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2023 attached [pid 2023] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2023] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2022] <... clone resumed>, parent_tid=[2023], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2023 [pid 2022] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2023] <... futex resumed>) = 0 [pid 2023] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2023] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2023] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2022] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2022] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2023] <... futex resumed>) = 0 [pid 2023] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2022] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2023] <... mount resumed>) = 0 [pid 2023] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2022] <... futex resumed>) = 0 [pid 2023] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2022] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2023] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2022] <... futex resumed>) = 0 [pid 2022] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2023] <... mount resumed>) = 0 [pid 2023] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2022] <... futex resumed>) = 0 [pid 2023] umount2("./file0", MNT_DETACH [pid 2022] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2022] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2023] <... umount2 resumed>) = 0 [pid 2022] <... mmap resumed>) = 0x7fc84e05e000 [pid 2023] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2022] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2023] <... futex resumed>) = 0 [pid 2022] <... mprotect resumed>) = 0 [pid 2023] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2022] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2024 attached , parent_tid=[2024], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2024 [pid 2024] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2024] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2022] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2024] <... futex resumed>) = 0 [pid 2022] <... futex resumed>) = 1 [pid 2024] umount2("./file0", MNT_DETACH [pid 2022] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2024] <... umount2 resumed>) = 0 [pid 2024] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2022] <... futex resumed>) = 0 [pid 2022] exit_group(0) = ? [pid 2024] +++ exited with 0 +++ [pid 2023] <... futex resumed>) = ? [pid 2023] +++ exited with 0 +++ [pid 2022] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2022, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2025 attached , child_tidptr=0x5555564465d0) = 2025 [pid 2025] set_robust_list(0x5555564465e0, 24) = 0 [pid 2025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2025] setpgid(0, 0) = 0 [pid 2025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2025] write(3, "1000", 4) = 4 [pid 2025] close(3) = 0 [pid 2025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2025] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2025] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2026 attached , parent_tid=[2026], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2026 [pid 2025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2025] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2026] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2026] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2025] <... futex resumed>) = 0 [pid 2025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2025] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2026] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2025] <... futex resumed>) = 0 [pid 2025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2025] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2026] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2025] <... futex resumed>) = 0 [pid 2025] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2026] umount2("./file0", MNT_DETACH [pid 2025] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2025] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2025] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2026] <... umount2 resumed>) = 0 [pid 2025] <... clone resumed>, parent_tid=[2027], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2027 ./strace-static-x86_64: Process 2027 attached [pid 2027] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2027] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2025] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2026] <... futex resumed>) = 0 [pid 2025] <... futex resumed>) = 1 [pid 2027] <... futex resumed>) = 0 [pid 2026] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2025] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2027] umount2("./file0", MNT_DETACH) = 0 [pid 2027] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2027] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2025] <... futex resumed>) = 0 [pid 2025] exit_group(0 [pid 2026] <... futex resumed>) = ? [pid 2025] <... exit_group resumed>) = ? [pid 2026] +++ exited with 0 +++ [pid 2027] <... futex resumed>) = ? [pid 2027] +++ exited with 0 +++ [pid 2025] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2025, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2028 attached , child_tidptr=0x5555564465d0) = 2028 [pid 2028] set_robust_list(0x5555564465e0, 24) = 0 [pid 2028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2028] setpgid(0, 0) = 0 [pid 2028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2028] write(3, "1000", 4) = 4 [pid 2028] close(3) = 0 [pid 2028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2028] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2028] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2029 attached , parent_tid=[2029], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2029 [pid 2028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2029] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2029] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2028] <... futex resumed>) = 0 [pid 2028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2029] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2028] <... futex resumed>) = 0 [pid 2028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2029] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2028] <... futex resumed>) = 0 [pid 2028] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2028] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2028] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2029] umount2("./file0", MNT_DETACH [pid 2028] <... clone resumed>, parent_tid=[2030], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2030 [pid 2028] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2028] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2030 attached [pid 2030] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2030] umount2("./file0", MNT_DETACH) = 0 [pid 2030] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2028] <... futex resumed>) = 0 [pid 2029] <... umount2 resumed>) = 0 [pid 2030] <... futex resumed>) = 1 [pid 2030] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2029] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2028] exit_group(0) = ? [pid 2030] <... futex resumed>) = ? [pid 2029] <... futex resumed>) = ? [pid 2030] +++ exited with 0 +++ [pid 2029] +++ exited with 0 +++ [pid 2028] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2028, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2031 ./strace-static-x86_64: Process 2031 attached [pid 2031] set_robust_list(0x5555564465e0, 24) = 0 [pid 2031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2031] setpgid(0, 0) = 0 [pid 2031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2031] write(3, "1000", 4) = 4 [pid 2031] close(3) = 0 [pid 2031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2031] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2031] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2031] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2032 attached , parent_tid=[2032], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2032 [pid 2031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2032] set_robust_list(0x7fc84e09f9e0, 24 [pid 2031] <... futex resumed>) = 0 [pid 2032] <... set_robust_list resumed>) = 0 [pid 2031] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2032] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2031] <... futex resumed>) = 0 [pid 2031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2032] <... futex resumed>) = 0 [pid 2032] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2031] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2032] <... futex resumed>) = 0 [pid 2032] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2031] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2031] <... futex resumed>) = 0 [pid 2031] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2031] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2031] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2031] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2031] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2032] umount2("./file0", MNT_DETACH [pid 2031] <... clone resumed>, parent_tid=[2033], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2033 [pid 2031] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2032] <... umount2 resumed>) = 0 [pid 2031] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2033 attached [pid 2033] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2033] umount2("./file0", MNT_DETACH) = 0 [pid 2033] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2031] <... futex resumed>) = 0 [pid 2033] <... futex resumed>) = 1 [pid 2032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2033] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2032] <... futex resumed>) = 0 [pid 2032] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2031] exit_group(0) = ? [pid 2032] <... futex resumed>) = ? [pid 2032] +++ exited with 0 +++ [pid 2033] <... futex resumed>) = ? [pid 2033] +++ exited with 0 +++ [pid 2031] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2031, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2034 attached , child_tidptr=0x5555564465d0) = 2034 [pid 2034] set_robust_list(0x5555564465e0, 24) = 0 [pid 2034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2034] setpgid(0, 0) = 0 [pid 2034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2034] write(3, "1000", 4) = 4 [pid 2034] close(3) = 0 [pid 2034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2034] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2034] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2035 attached , parent_tid=[2035], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2035 [pid 2035] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2035] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2034] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2035] <... futex resumed>) = 0 [pid 2035] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2035] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2034] <... futex resumed>) = 0 [pid 2034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2035] <... futex resumed>) = 0 [pid 2035] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2034] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2035] <... mount resumed>) = 0 [pid 2035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2034] <... futex resumed>) = 0 [pid 2034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2034] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2035] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2034] <... futex resumed>) = 0 [pid 2035] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2034] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2034] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2034] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2034] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2035] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2034] <... clone resumed>, parent_tid=[2036], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2036 [pid 2035] umount2("./file0", MNT_DETACH [pid 2034] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2036 attached [pid 2034] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2036] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2036] umount2("./file0", MNT_DETACH [pid 2035] <... umount2 resumed>) = 0 [pid 2035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2035] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2036] <... umount2 resumed>) = 0 [pid 2036] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2034] <... futex resumed>) = 0 [pid 2034] exit_group(0 [pid 2036] ????( [pid 2034] <... exit_group resumed>) = ? [pid 2035] <... futex resumed>) = ? [pid 2035] +++ exited with 0 +++ [pid 2036] <... ???? resumed>) = ? [pid 2036] +++ exited with 0 +++ [pid 2034] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2034, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2037 ./strace-static-x86_64: Process 2037 attached [pid 2037] set_robust_list(0x5555564465e0, 24) = 0 [pid 2037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2037] setpgid(0, 0) = 0 [pid 2037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2037] write(3, "1000", 4) = 4 [pid 2037] close(3) = 0 [pid 2037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2037] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2037] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2037] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2038 attached , parent_tid=[2038], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2038 [pid 2038] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2038] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2038] <... futex resumed>) = 0 [pid 2037] <... futex resumed>) = 1 [pid 2038] mkdir("./file0", 000 [pid 2037] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2038] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2038] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2037] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2038] <... futex resumed>) = 0 [pid 2038] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2037] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2037] <... futex resumed>) = 0 [pid 2037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2037] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2038] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2037] <... futex resumed>) = 0 [pid 2038] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2037] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2037] <... futex resumed>) = 0 [pid 2038] umount2("./file0", MNT_DETACH [pid 2037] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2038] <... umount2 resumed>) = 0 [pid 2037] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2037] <... mmap resumed>) = 0x7fc84e05e000 [pid 2038] <... futex resumed>) = 0 [pid 2037] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2038] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2037] <... mprotect resumed>) = 0 [pid 2037] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2039 attached , parent_tid=[2039], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2039 [pid 2039] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2039] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2037] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2039] <... futex resumed>) = 0 [pid 2039] umount2("./file0", MNT_DETACH) = 0 [pid 2037] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2039] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2039] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2037] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2037] exit_group(0) = ? [pid 2038] <... futex resumed>) = ? [pid 2039] <... futex resumed>) = ? [pid 2039] +++ exited with 0 +++ [pid 2038] +++ exited with 0 +++ [pid 2037] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2037, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2040 ./strace-static-x86_64: Process 2040 attached [pid 2040] set_robust_list(0x5555564465e0, 24) = 0 [pid 2040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2040] setpgid(0, 0) = 0 [pid 2040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2040] write(3, "1000", 4) = 4 [pid 2040] close(3) = 0 [pid 2040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2040] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2040] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2041 attached , parent_tid=[2041], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2041 [pid 2040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2041] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2041] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2040] <... futex resumed>) = 0 [pid 2040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2041] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2040] <... futex resumed>) = 0 [pid 2040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2041] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2040] <... futex resumed>) = 0 [pid 2040] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2040] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2040] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2041] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2042 attached [pid 2040] <... clone resumed>, parent_tid=[2042], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2042 [pid 2040] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2040] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2042] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2041] <... umount2 resumed>) = 0 [pid 2042] umount2("./file0", MNT_DETACH [pid 2041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2041] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2042] <... umount2 resumed>) = 0 [pid 2042] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2040] <... futex resumed>) = 0 [pid 2040] exit_group(0) = ? [pid 2041] <... futex resumed>) = ? [pid 2041] +++ exited with 0 +++ [pid 2042] +++ exited with 0 +++ [pid 2040] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2040, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2043 ./strace-static-x86_64: Process 2043 attached [pid 2043] set_robust_list(0x5555564465e0, 24) = 0 [pid 2043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2043] setpgid(0, 0) = 0 [pid 2043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2043] write(3, "1000", 4) = 4 [pid 2043] close(3) = 0 [pid 2043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2043] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2043] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2043] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2044], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2044 [pid 2043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2043] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2044 attached [pid 2044] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2044] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2043] <... futex resumed>) = 0 [pid 2043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2043] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2044] <... futex resumed>) = 1 [pid 2044] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2043] <... futex resumed>) = 0 [pid 2044] <... futex resumed>) = 1 [pid 2043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2044] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2043] <... futex resumed>) = 0 [pid 2043] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2044] <... mount resumed>) = 0 [pid 2044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2043] <... futex resumed>) = 0 [pid 2043] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2043] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2043] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2043] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2043] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2044] umount2("./file0", MNT_DETACH [pid 2043] <... clone resumed>, parent_tid=[2045], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2045 [pid 2044] <... umount2 resumed>) = 0 [pid 2043] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2043] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2045 attached [pid 2045] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2045] umount2("./file0", MNT_DETACH [pid 2044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2045] <... umount2 resumed>) = 0 [pid 2044] <... futex resumed>) = 0 [pid 2045] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2043] <... futex resumed>) = 0 [pid 2043] exit_group(0) = ? [pid 2044] +++ exited with 0 +++ [pid 2045] <... futex resumed>) = ? [pid 2045] +++ exited with 0 +++ [pid 2043] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2043, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2046 attached , child_tidptr=0x5555564465d0) = 2046 [pid 2046] set_robust_list(0x5555564465e0, 24) = 0 [pid 2046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2046] setpgid(0, 0) = 0 [pid 2046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2046] write(3, "1000", 4) = 4 [pid 2046] close(3) = 0 [pid 2046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2046] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2046] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2047 attached , parent_tid=[2047], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2047 [pid 2047] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2047] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2047] <... futex resumed>) = 0 [pid 2047] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2047] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2047] <... futex resumed>) = 0 [pid 2047] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2047] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2047] <... futex resumed>) = 0 [pid 2047] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2046] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2047] <... mount resumed>) = 0 [pid 2047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2047] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2046] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2047] <... futex resumed>) = 0 [pid 2047] umount2("./file0", MNT_DETACH [pid 2046] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2047] <... umount2 resumed>) = 0 [pid 2047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2047] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] <... futex resumed>) = 0 [pid 2046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2046] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2046] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2048 attached , parent_tid=[2048], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2048 [pid 2048] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2048] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2048] <... futex resumed>) = 0 [pid 2048] umount2("./file0", MNT_DETACH [pid 2046] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2048] <... umount2 resumed>) = 0 [pid 2048] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2048] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2046] <... futex resumed>) = 0 [pid 2046] exit_group(0 [pid 2047] <... futex resumed>) = ? [pid 2046] <... exit_group resumed>) = ? [pid 2047] +++ exited with 0 +++ [pid 2048] <... futex resumed>) = ? [pid 2048] +++ exited with 0 +++ [pid 2046] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2046, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2049 ./strace-static-x86_64: Process 2049 attached [pid 2049] set_robust_list(0x5555564465e0, 24) = 0 [pid 2049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2049] setpgid(0, 0) = 0 [pid 2049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2049] write(3, "1000", 4) = 4 [pid 2049] close(3) = 0 [pid 2049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2049] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2049] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2049] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2050], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2050 [pid 2049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2049] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2050 attached [pid 2050] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2050] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2049] <... futex resumed>) = 0 [pid 2049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2049] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2050] <... futex resumed>) = 1 [pid 2050] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2049] <... futex resumed>) = 0 [pid 2050] <... futex resumed>) = 1 [pid 2049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2050] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2049] <... futex resumed>) = 0 [pid 2049] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2050] <... mount resumed>) = 0 [pid 2050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2049] <... futex resumed>) = 0 [pid 2049] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2049] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2049] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2049] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2050] umount2("./file0", MNT_DETACH [pid 2049] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2051 attached , parent_tid=[2051], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2051 [pid 2049] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2051] set_robust_list(0x7fc84e07e9e0, 24 [pid 2049] <... futex resumed>) = 0 [pid 2049] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2051] <... set_robust_list resumed>) = 0 [pid 2050] <... umount2 resumed>) = 0 [pid 2051] umount2("./file0", MNT_DETACH [pid 2050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2051] <... umount2 resumed>) = 0 [pid 2050] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2051] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2049] <... futex resumed>) = 0 [pid 2051] <... futex resumed>) = 1 [pid 2049] exit_group(0 [pid 2051] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2049] <... exit_group resumed>) = ? [pid 2051] <... futex resumed>) = ? [pid 2050] <... futex resumed>) = ? [pid 2051] +++ exited with 0 +++ [pid 2050] +++ exited with 0 +++ [pid 2049] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2049, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2052 ./strace-static-x86_64: Process 2052 attached [pid 2052] set_robust_list(0x5555564465e0, 24) = 0 [pid 2052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2052] setpgid(0, 0) = 0 [pid 2052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2052] write(3, "1000", 4) = 4 [pid 2052] close(3) = 0 [pid 2052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2052] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2052] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2053 attached , parent_tid=[2053], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2053 [pid 2052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2053] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2053] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2052] <... futex resumed>) = 0 [pid 2052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2053] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2052] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2053] <... mount resumed>) = 0 [pid 2053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2052] <... futex resumed>) = 0 [pid 2052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2053] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2052] <... futex resumed>) = 0 [pid 2052] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2053] umount2("./file0", MNT_DETACH [pid 2052] <... mmap resumed>) = 0x7fc84e05e000 [pid 2052] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2052] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2053] <... umount2 resumed>) = 0 [pid 2053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] <... clone resumed>, parent_tid=[2054], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2054 [pid 2053] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2052] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2052] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2054 attached [pid 2054] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2054] umount2("./file0", MNT_DETACH) = 0 [pid 2054] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2052] <... futex resumed>) = 0 [pid 2052] exit_group(0) = ? [pid 2053] <... futex resumed>) = ? [pid 2053] +++ exited with 0 +++ [pid 2054] +++ exited with 0 +++ [pid 2052] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2052, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2055 ./strace-static-x86_64: Process 2055 attached [pid 2055] set_robust_list(0x5555564465e0, 24) = 0 [pid 2055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2055] setpgid(0, 0) = 0 [pid 2055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2055] write(3, "1000", 4) = 4 [pid 2055] close(3) = 0 [pid 2055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2055] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2055] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2055] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2056 attached , parent_tid=[2056], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2056 [pid 2055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2055] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2056] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2056] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2055] <... futex resumed>) = 0 [pid 2056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2055] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2056] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2056] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2055] <... futex resumed>) = 0 [pid 2055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2056] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2055] <... futex resumed>) = 0 [pid 2056] <... mount resumed>) = 0 [pid 2055] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2055] <... futex resumed>) = 0 [pid 2056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 2055] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2055] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2055] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2055] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2055] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2057], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2057 [pid 2055] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2055] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2057 attached [pid 2057] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2057] umount2("./file0", MNT_DETACH [pid 2056] umount2("./file0", MNT_DETACH [pid 2057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 2057] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2055] <... futex resumed>) = 0 [pid 2057] <... futex resumed>) = 1 [pid 2057] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2056] <... umount2 resumed>) = 0 [pid 2056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2056] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2055] exit_group(0) = ? [pid 2056] <... futex resumed>) = ? [pid 2056] +++ exited with 0 +++ [pid 2057] <... futex resumed>) = ? [pid 2057] +++ exited with 0 +++ [pid 2055] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2055, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2058 attached , child_tidptr=0x5555564465d0) = 2058 [pid 2058] set_robust_list(0x5555564465e0, 24) = 0 [pid 2058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2058] setpgid(0, 0) = 0 [pid 2058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2058] write(3, "1000", 4) = 4 [pid 2058] close(3) = 0 [pid 2058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2058] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2058] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2059 attached , parent_tid=[2059], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2059 [pid 2058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2059] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2059] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2058] <... futex resumed>) = 0 [pid 2058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2059] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2058] <... futex resumed>) = 0 [pid 2058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2059] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2058] <... futex resumed>) = 0 [pid 2058] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2058] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2058] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2059] <... futex resumed>) = 1 [pid 2058] <... clone resumed>, parent_tid=[2060], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2060 [pid 2058] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2058] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2060 attached [pid 2060] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2060] umount2("./file0", MNT_DETACH [pid 2059] umount2("./file0", MNT_DETACH [pid 2060] <... umount2 resumed>) = 0 [pid 2060] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2058] <... futex resumed>) = 0 [pid 2060] <... futex resumed>) = 1 [pid 2060] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2059] <... umount2 resumed>) = 0 [pid 2059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2059] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2058] exit_group(0) = ? [pid 2060] <... futex resumed>) = ? [pid 2059] <... futex resumed>) = ? [pid 2060] +++ exited with 0 +++ [pid 2059] +++ exited with 0 +++ [pid 2058] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2058, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2061 attached , child_tidptr=0x5555564465d0) = 2061 [pid 2061] set_robust_list(0x5555564465e0, 24) = 0 [pid 2061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2061] setpgid(0, 0) = 0 [pid 2061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2061] write(3, "1000", 4) = 4 [pid 2061] close(3) = 0 [pid 2061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2061] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2061] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2061] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2062 attached , parent_tid=[2062], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2062 [pid 2062] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2062] <... futex resumed>) = 0 [pid 2062] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2061] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2061] <... futex resumed>) = 0 [pid 2061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2061] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2062] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2061] <... futex resumed>) = 0 [pid 2061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2061] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2062] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2061] <... futex resumed>) = 0 [pid 2061] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2061] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2061] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2061] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2061] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2062] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2061] <... clone resumed>, parent_tid=[2063], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2063 [pid 2061] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2061] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2063 attached [pid 2063] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2063] umount2("./file0", MNT_DETACH [pid 2062] umount2("./file0", MNT_DETACH [pid 2063] <... umount2 resumed>) = 0 [pid 2063] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2062] <... umount2 resumed>) = 0 [pid 2061] <... futex resumed>) = 0 [pid 2063] <... futex resumed>) = 1 [pid 2063] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2062] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2061] exit_group(0) = ? [pid 2063] <... futex resumed>) = ? [pid 2062] <... futex resumed>) = ? [pid 2063] +++ exited with 0 +++ [pid 2062] +++ exited with 0 +++ [pid 2061] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2061, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2064 ./strace-static-x86_64: Process 2064 attached [pid 2064] set_robust_list(0x5555564465e0, 24) = 0 [pid 2064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2064] setpgid(0, 0) = 0 [pid 2064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2064] write(3, "1000", 4) = 4 [pid 2064] close(3) = 0 [pid 2064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2064] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2064] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2065 attached , parent_tid=[2065], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2065 [pid 2065] set_robust_list(0x7fc84e09f9e0, 24 [pid 2064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2065] <... set_robust_list resumed>) = 0 [pid 2064] <... futex resumed>) = 0 [pid 2064] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2065] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2064] <... futex resumed>) = 0 [pid 2064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2064] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2065] <... futex resumed>) = 1 [pid 2065] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2064] <... futex resumed>) = 0 [pid 2065] <... futex resumed>) = 1 [pid 2064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2065] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2064] <... futex resumed>) = 0 [pid 2064] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2065] <... mount resumed>) = 0 [pid 2065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2064] <... futex resumed>) = 0 [pid 2065] <... futex resumed>) = 1 [pid 2064] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2065] umount2("./file0", MNT_DETACH [pid 2064] <... futex resumed>) = 0 [pid 2064] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2064] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2064] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2065] <... umount2 resumed>) = 0 [pid 2065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2066 attached ) = 0 [pid 2066] set_robust_list(0x7fc84e07e9e0, 24 [pid 2065] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2066] <... set_robust_list resumed>) = 0 [pid 2066] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2064] <... clone resumed>, parent_tid=[2066], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2066 [pid 2066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2064] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2066] umount2("./file0", MNT_DETACH [pid 2064] <... futex resumed>) = 0 [pid 2064] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2066] <... umount2 resumed>) = 0 [pid 2066] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2064] <... futex resumed>) = 0 [pid 2066] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2064] exit_group(0 [pid 2065] <... futex resumed>) = ? [pid 2064] <... exit_group resumed>) = ? [pid 2065] +++ exited with 0 +++ [pid 2066] <... futex resumed>) = ? [pid 2066] +++ exited with 0 +++ [pid 2064] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2064, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2067 ./strace-static-x86_64: Process 2067 attached [pid 2067] set_robust_list(0x5555564465e0, 24) = 0 [pid 2067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2067] setpgid(0, 0) = 0 [pid 2067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2067] write(3, "1000", 4) = 4 [pid 2067] close(3) = 0 [pid 2067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2067] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2067] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2068 attached [pid 2068] set_robust_list(0x7fc84e09f9e0, 24 [pid 2067] <... clone resumed>, parent_tid=[2068], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2068 [pid 2068] <... set_robust_list resumed>) = 0 [pid 2067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2068] mkdir("./file0", 000 [pid 2067] <... futex resumed>) = 0 [pid 2068] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2067] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2068] <... futex resumed>) = 0 [pid 2067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2068] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2067] <... futex resumed>) = 0 [pid 2067] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2068] <... mount resumed>) = 0 [pid 2068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2067] <... futex resumed>) = 0 [pid 2068] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2067] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2068] <... mount resumed>) = 0 [pid 2068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2067] <... futex resumed>) = 0 [pid 2067] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2067] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2067] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2067] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2068] umount2("./file0", MNT_DETACH [pid 2067] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2069], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2069 [pid 2067] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2068] <... umount2 resumed>) = 0 [pid 2067] <... futex resumed>) = 0 [pid 2067] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2069 attached [pid 2069] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2069] umount2("./file0", MNT_DETACH) = 0 [pid 2069] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2067] <... futex resumed>) = 0 [pid 2069] <... futex resumed>) = 1 [pid 2068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2069] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2068] <... futex resumed>) = 0 [pid 2068] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2067] exit_group(0) = ? [pid 2069] <... futex resumed>) = ? [pid 2068] <... futex resumed>) = ? [pid 2069] +++ exited with 0 +++ [pid 2068] +++ exited with 0 +++ [pid 2067] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2067, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2070 attached , child_tidptr=0x5555564465d0) = 2070 [pid 2070] set_robust_list(0x5555564465e0, 24) = 0 [pid 2070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2070] setpgid(0, 0) = 0 [pid 2070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2070] write(3, "1000", 4) = 4 [pid 2070] close(3) = 0 [pid 2070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2070] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2070] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2071 attached [pid 2071] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2071] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... clone resumed>, parent_tid=[2071], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2071 [pid 2070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2070] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2071] <... futex resumed>) = 0 [pid 2071] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2071] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... futex resumed>) = 0 [pid 2070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2071] <... futex resumed>) = 0 [pid 2071] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2070] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2071] <... mount resumed>) = 0 [pid 2071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2071] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2071] <... futex resumed>) = 0 [pid 2071] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2070] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2071] <... mount resumed>) = 0 [pid 2071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2071] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2070] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2071] <... futex resumed>) = 0 [pid 2071] umount2("./file0", MNT_DETACH [pid 2070] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2071] <... umount2 resumed>) = 0 [pid 2071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2071] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... futex resumed>) = 0 [pid 2070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2070] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2070] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2072 attached [pid 2072] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2072] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... clone resumed>, parent_tid=[2072], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2072 [pid 2070] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2072] <... futex resumed>) = 0 [pid 2072] umount2("./file0", MNT_DETACH [pid 2070] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2072] <... umount2 resumed>) = 0 [pid 2072] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2072] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2070] exit_group(0 [pid 2071] <... futex resumed>) = ? [pid 2070] <... exit_group resumed>) = ? [pid 2071] +++ exited with 0 +++ [pid 2072] <... futex resumed>) = ? [pid 2072] +++ exited with 0 +++ [pid 2070] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2070, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2073 ./strace-static-x86_64: Process 2073 attached [pid 2073] set_robust_list(0x5555564465e0, 24) = 0 [pid 2073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2073] setpgid(0, 0) = 0 [pid 2073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2073] write(3, "1000", 4) = 4 [pid 2073] close(3) = 0 [pid 2073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2073] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2073] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2073] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2074 attached [pid 2074] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2074] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2073] <... clone resumed>, parent_tid=[2074], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2074 [pid 2073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2074] <... futex resumed>) = 0 [pid 2073] <... futex resumed>) = 1 [pid 2074] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2073] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2074] <... futex resumed>) = 0 [pid 2074] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2074] <... futex resumed>) = 0 [pid 2074] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2073] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2074] <... mount resumed>) = 0 [pid 2074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2074] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2073] <... futex resumed>) = 0 [pid 2073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2074] <... futex resumed>) = 0 [pid 2074] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2073] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2074] <... mount resumed>) = 0 [pid 2074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2074] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2073] <... futex resumed>) = 0 [pid 2073] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2074] <... futex resumed>) = 0 [pid 2074] umount2("./file0", MNT_DETACH [pid 2073] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2074] <... umount2 resumed>) = 0 [pid 2073] <... futex resumed>) = 0 [pid 2074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2073] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2074] <... futex resumed>) = 0 [pid 2074] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2073] <... mmap resumed>) = 0x7fc84e05e000 [pid 2073] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2073] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2075 attached [pid 2075] set_robust_list(0x7fc84e07e9e0, 24 [pid 2073] <... clone resumed>, parent_tid=[2075], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2075 [pid 2075] <... set_robust_list resumed>) = 0 [pid 2075] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2073] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2075] <... futex resumed>) = 0 [pid 2075] umount2("./file0", MNT_DETACH [pid 2073] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2075] <... umount2 resumed>) = 0 [pid 2075] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2075] <... futex resumed>) = 0 [pid 2073] exit_group(0 [pid 2074] <... futex resumed>) = ? [pid 2073] <... exit_group resumed>) = ? [pid 2074] +++ exited with 0 +++ [pid 2075] +++ exited with 0 +++ [pid 2073] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2073, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2076 attached , child_tidptr=0x5555564465d0) = 2076 [pid 2076] set_robust_list(0x5555564465e0, 24) = 0 [pid 2076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2076] setpgid(0, 0) = 0 [pid 2076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2076] write(3, "1000", 4) = 4 [pid 2076] close(3) = 0 [pid 2076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2076] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2076] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2077 attached , parent_tid=[2077], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2077 [pid 2077] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2077] <... futex resumed>) = 0 [pid 2077] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2076] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2077] <... futex resumed>) = 0 [pid 2077] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2076] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2077] <... futex resumed>) = 0 [pid 2077] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2076] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2077] <... mount resumed>) = 0 [pid 2077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2076] <... futex resumed>) = 0 [pid 2076] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2077] umount2("./file0", MNT_DETACH [pid 2076] <... futex resumed>) = 0 [pid 2076] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2076] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2076] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2078], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2078 [pid 2077] <... umount2 resumed>) = 0 [pid 2076] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2076] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2078 attached [pid 2078] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2078] umount2("./file0", MNT_DETACH [pid 2077] <... futex resumed>) = 0 [pid 2078] <... umount2 resumed>) = 0 [pid 2077] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2078] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2076] <... futex resumed>) = 0 [pid 2076] exit_group(0) = ? [pid 2078] <... futex resumed>) = ? [pid 2077] <... futex resumed>) = ? [pid 2077] +++ exited with 0 +++ [pid 2078] +++ exited with 0 +++ [pid 2076] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2076, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2079 attached , child_tidptr=0x5555564465d0) = 2079 [pid 2079] set_robust_list(0x5555564465e0, 24) = 0 [pid 2079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2079] setpgid(0, 0) = 0 [pid 2079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2079] write(3, "1000", 4) = 4 [pid 2079] close(3) = 0 [pid 2079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2079] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2079] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2080], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2080 [pid 2079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2080 attached [pid 2080] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2080] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2079] <... futex resumed>) = 0 [pid 2079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2080] <... futex resumed>) = 1 [pid 2080] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2079] <... futex resumed>) = 0 [pid 2079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2080] <... futex resumed>) = 1 [pid 2080] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2079] <... futex resumed>) = 0 [pid 2079] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2079] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2079] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2081], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2081 [pid 2079] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2079] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2080] <... futex resumed>) = 1 [pid 2080] umount2("./file0", MNT_DETACH) = 0 ./strace-static-x86_64: Process 2081 attached [pid 2080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2080] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2081] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2081] umount2("./file0", MNT_DETACH) = 0 [pid 2081] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2079] <... futex resumed>) = 0 [pid 2081] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2079] exit_group(0) = ? [pid 2080] <... futex resumed>) = ? [pid 2080] +++ exited with 0 +++ [pid 2081] <... futex resumed>) = ? [pid 2081] +++ exited with 0 +++ [pid 2079] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2079, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2082 ./strace-static-x86_64: Process 2082 attached [pid 2082] set_robust_list(0x5555564465e0, 24) = 0 [pid 2082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2082] setpgid(0, 0) = 0 [pid 2082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2082] write(3, "1000", 4) = 4 [pid 2082] close(3) = 0 [pid 2082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2082] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2082] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2083], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2083 ./strace-static-x86_64: Process 2083 attached [pid 2083] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2083] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2083] <... futex resumed>) = 0 [pid 2083] mkdir("./file0", 000 [pid 2082] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2083] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2082] <... futex resumed>) = 0 [pid 2083] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2082] <... futex resumed>) = 0 [pid 2083] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2082] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2083] <... mount resumed>) = 0 [pid 2083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2082] <... futex resumed>) = 0 [pid 2083] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2083] <... mount resumed>) = 0 [pid 2083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2082] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2083] <... futex resumed>) = 0 [pid 2082] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2082] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2083] umount2("./file0", MNT_DETACH [pid 2082] <... futex resumed>) = 0 [pid 2083] <... umount2 resumed>) = 0 [pid 2082] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2082] <... futex resumed>) = 0 [pid 2083] <... futex resumed>) = 0 [pid 2082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2083] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2082] <... mmap resumed>) = 0x7fc84e05e000 [pid 2082] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2082] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2084 attached , parent_tid=[2084], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2084 [pid 2084] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2084] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2082] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2084] <... futex resumed>) = 0 [pid 2084] umount2("./file0", MNT_DETACH [pid 2082] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2084] <... umount2 resumed>) = 0 [pid 2084] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2082] <... futex resumed>) = 0 [pid 2082] exit_group(0) = ? [pid 2083] <... futex resumed>) = ? [pid 2084] +++ exited with 0 +++ [pid 2083] +++ exited with 0 +++ [pid 2082] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2082, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2085 ./strace-static-x86_64: Process 2085 attached [pid 2085] set_robust_list(0x5555564465e0, 24) = 0 [pid 2085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2085] setpgid(0, 0) = 0 [pid 2085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2085] write(3, "1000", 4) = 4 [pid 2085] close(3) = 0 [pid 2085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2085] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2085] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2086 attached , parent_tid=[2086], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2086 [pid 2085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2085] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2086] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2086] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2085] <... futex resumed>) = 0 [pid 2085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2085] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2086] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2085] <... futex resumed>) = 0 [pid 2085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2085] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2086] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2085] <... futex resumed>) = 0 [pid 2085] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2085] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2086] umount2("./file0", MNT_DETACH [pid 2085] <... futex resumed>) = 0 [pid 2085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2085] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2085] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2087], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2087 [pid 2085] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2085] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2087 attached [pid 2086] <... umount2 resumed>) = 0 [pid 2087] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2087] umount2("./file0", MNT_DETACH) = 0 [pid 2086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2087] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2085] <... futex resumed>) = 0 [pid 2085] exit_group(0) = ? [pid 2086] <... futex resumed>) = ? [pid 2087] <... futex resumed>) = ? [pid 2087] +++ exited with 0 +++ [pid 2086] +++ exited with 0 +++ [pid 2085] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2085, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2088 attached , child_tidptr=0x5555564465d0) = 2088 [pid 2088] set_robust_list(0x5555564465e0, 24) = 0 [pid 2088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2088] setpgid(0, 0) = 0 [pid 2088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2088] write(3, "1000", 4) = 4 [pid 2088] close(3) = 0 [pid 2088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2088] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2088] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2089 attached [pid 2089] set_robust_list(0x7fc84e09f9e0, 24 [pid 2088] <... clone resumed>, parent_tid=[2089], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2089 [pid 2089] <... set_robust_list resumed>) = 0 [pid 2088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2089] mkdir("./file0", 000 [pid 2088] <... futex resumed>) = 0 [pid 2089] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2088] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2089] <... futex resumed>) = 0 [pid 2088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2089] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2088] <... futex resumed>) = 0 [pid 2088] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2089] <... mount resumed>) = 0 [pid 2089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2088] <... futex resumed>) = 0 [pid 2088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2088] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2089] <... futex resumed>) = 1 [pid 2089] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2088] <... futex resumed>) = 0 [pid 2088] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2088] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2088] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2088] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2090], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2090 [pid 2088] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2088] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2089] <... futex resumed>) = 1 [pid 2089] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2090 attached ) = 0 [pid 2089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2089] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2090] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2090] umount2("./file0", MNT_DETACH) = 0 [pid 2090] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2088] <... futex resumed>) = 0 [pid 2088] exit_group(0 [pid 2089] <... futex resumed>) = ? [pid 2088] <... exit_group resumed>) = ? [pid 2089] +++ exited with 0 +++ [pid 2090] <... futex resumed>) = ? [pid 2090] +++ exited with 0 +++ [pid 2088] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2088, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2091 ./strace-static-x86_64: Process 2091 attached [pid 2091] set_robust_list(0x5555564465e0, 24) = 0 [pid 2091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2091] setpgid(0, 0) = 0 [pid 2091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2091] write(3, "1000", 4) = 4 [pid 2091] close(3) = 0 [pid 2091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2091] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2091] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2091] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2092 attached [pid 2092] set_robust_list(0x7fc84e09f9e0, 24 [pid 2091] <... clone resumed>, parent_tid=[2092], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2092 [pid 2092] <... set_robust_list resumed>) = 0 [pid 2091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2092] mkdir("./file0", 000 [pid 2091] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2092] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2091] <... futex resumed>) = 0 [pid 2091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2091] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2092] <... futex resumed>) = 1 [pid 2092] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2091] <... futex resumed>) = 0 [pid 2091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2091] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2092] <... futex resumed>) = 1 [pid 2092] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2091] <... futex resumed>) = 0 [pid 2091] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2091] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2091] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2091] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2091] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2093 attached [pid 2093] set_robust_list(0x7fc84e07e9e0, 24 [pid 2091] <... clone resumed>, parent_tid=[2093], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2093 [pid 2093] <... set_robust_list resumed>) = 0 [pid 2091] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2093] umount2("./file0", MNT_DETACH [pid 2091] <... futex resumed>) = 0 [pid 2091] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2092] umount2("./file0", MNT_DETACH [pid 2093] <... umount2 resumed>) = 0 [pid 2092] <... umount2 resumed>) = 0 [pid 2093] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2091] <... futex resumed>) = 0 [pid 2093] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2092] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2091] exit_group(0) = ? [pid 2093] <... futex resumed>) = ? [pid 2093] +++ exited with 0 +++ [pid 2092] <... futex resumed>) = ? [pid 2092] +++ exited with 0 +++ [pid 2091] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2091, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2094 attached , child_tidptr=0x5555564465d0) = 2094 [pid 2094] set_robust_list(0x5555564465e0, 24) = 0 [pid 2094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2094] setpgid(0, 0) = 0 [pid 2094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2094] write(3, "1000", 4) = 4 [pid 2094] close(3) = 0 [pid 2094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2094] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2094] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2095 attached , parent_tid=[2095], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2095 [pid 2095] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2095] <... futex resumed>) = 0 [pid 2094] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2095] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2094] <... futex resumed>) = 0 [pid 2094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2094] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2095] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2094] <... futex resumed>) = 0 [pid 2095] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2095] <... mount resumed>) = 0 [pid 2094] <... futex resumed>) = 0 [pid 2095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2094] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2095] <... futex resumed>) = 0 [pid 2094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2094] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2095] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2094] <... futex resumed>) = 0 [pid 2095] umount2("./file0", MNT_DETACH [pid 2094] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2095] <... umount2 resumed>) = 0 [pid 2094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2094] <... mmap resumed>) = 0x7fc84e05e000 [pid 2095] <... futex resumed>) = 0 [pid 2094] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2095] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2094] <... mprotect resumed>) = 0 [pid 2094] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2096 attached [pid 2096] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2096] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2094] <... clone resumed>, parent_tid=[2096], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2096 [pid 2094] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2096] <... futex resumed>) = 0 [pid 2096] umount2("./file0", MNT_DETACH [pid 2094] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2096] <... umount2 resumed>) = 0 [pid 2096] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2094] <... futex resumed>) = 0 [pid 2094] exit_group(0) = ? [pid 2095] <... futex resumed>) = ? [pid 2095] +++ exited with 0 +++ [pid 2096] +++ exited with 0 +++ [pid 2094] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2094, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2097 ./strace-static-x86_64: Process 2097 attached [pid 2097] set_robust_list(0x5555564465e0, 24) = 0 [pid 2097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2097] setpgid(0, 0) = 0 [pid 2097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2097] write(3, "1000", 4) = 4 [pid 2097] close(3) = 0 [pid 2097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2097] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2097] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2097] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2098 attached , parent_tid=[2098], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2098 [pid 2097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2097] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2098] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2098] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2098] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2097] <... futex resumed>) = 0 [pid 2097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2098] <... futex resumed>) = 0 [pid 2097] <... futex resumed>) = 1 [pid 2098] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2098] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2097] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2098] <... futex resumed>) = 0 [pid 2097] <... futex resumed>) = 1 [pid 2098] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2097] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2097] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2098] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2097] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2098] <... futex resumed>) = 0 [pid 2097] <... futex resumed>) = 1 [pid 2098] umount2("./file0", MNT_DETACH) = 0 [pid 2097] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2097] <... futex resumed>) = 0 [pid 2098] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2097] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2097] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2097] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2100 attached [pid 2100] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2100] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2097] <... clone resumed>, parent_tid=[2100], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2100 [pid 2097] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2100] <... futex resumed>) = 0 [pid 2100] umount2("./file0", MNT_DETACH [pid 2097] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2100] <... umount2 resumed>) = 0 [pid 2100] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2097] <... futex resumed>) = 0 [pid 2097] exit_group(0 [pid 2098] <... futex resumed>) = ? [pid 2098] +++ exited with 0 +++ [pid 2097] <... exit_group resumed>) = ? [pid 2100] +++ exited with 0 +++ [pid 2097] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2097, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2101 ./strace-static-x86_64: Process 2101 attached [pid 2101] set_robust_list(0x5555564465e0, 24) = 0 [pid 2101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2101] setpgid(0, 0) = 0 [pid 2101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2101] write(3, "1000", 4) = 4 [pid 2101] close(3) = 0 [pid 2101] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2101] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2101] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2102 attached , parent_tid=[2102], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2102 [pid 2102] set_robust_list(0x7fc84e09f9e0, 24 [pid 2101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2102] <... set_robust_list resumed>) = 0 [pid 2101] <... futex resumed>) = 0 [pid 2101] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2102] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2101] <... futex resumed>) = 0 [pid 2102] <... futex resumed>) = 1 [pid 2101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2102] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2101] <... futex resumed>) = 0 [pid 2101] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2102] <... mount resumed>) = 0 [pid 2102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2101] <... futex resumed>) = 0 [pid 2102] <... futex resumed>) = 1 [pid 2101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2102] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2101] <... futex resumed>) = 0 [pid 2101] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2102] <... mount resumed>) = 0 [pid 2102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2101] <... futex resumed>) = 0 [pid 2102] umount2("./file0", MNT_DETACH [pid 2101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2101] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2101] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2101] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2103 attached [pid 2103] set_robust_list(0x7fc84e07e9e0, 24 [pid 2101] <... clone resumed>, parent_tid=[2103], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2103 [pid 2103] <... set_robust_list resumed>) = 0 [pid 2101] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2103] umount2("./file0", MNT_DETACH [pid 2101] <... futex resumed>) = 0 [pid 2101] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2103] <... umount2 resumed>) = 0 [pid 2103] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2101] <... futex resumed>) = 0 [pid 2103] <... futex resumed>) = 1 [pid 2103] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2102] <... umount2 resumed>) = 0 [pid 2102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2102] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2101] exit_group(0) = ? [pid 2102] <... futex resumed>) = ? [pid 2102] +++ exited with 0 +++ [pid 2103] <... futex resumed>) = ? [pid 2103] +++ exited with 0 +++ [pid 2101] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2101, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2104 ./strace-static-x86_64: Process 2104 attached [pid 2104] set_robust_list(0x5555564465e0, 24) = 0 [pid 2104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2104] setpgid(0, 0) = 0 [pid 2104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2104] write(3, "1000", 4) = 4 [pid 2104] close(3) = 0 [pid 2104] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2104] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2104] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2105], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2105 [pid 2104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2104] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2105 attached [pid 2105] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2105] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2104] <... futex resumed>) = 0 [pid 2104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2104] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2105] <... futex resumed>) = 1 [pid 2105] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2104] <... futex resumed>) = 0 [pid 2105] <... futex resumed>) = 1 [pid 2104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2105] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2104] <... futex resumed>) = 0 [pid 2104] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2105] <... mount resumed>) = 0 [pid 2105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2104] <... futex resumed>) = 0 [pid 2105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2105] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2104] <... futex resumed>) = 0 [pid 2105] umount2("./file0", MNT_DETACH [pid 2104] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2105] <... umount2 resumed>) = 0 [pid 2104] <... mmap resumed>) = 0x7fc84e05e000 [pid 2104] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2104] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2104] <... clone resumed>, parent_tid=[2106], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2106 [pid 2104] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2104] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2106 attached [pid 2106] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2106] umount2("./file0", MNT_DETACH [pid 2105] <... futex resumed>) = 0 [pid 2106] <... umount2 resumed>) = 0 [pid 2105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2106] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2104] <... futex resumed>) = 0 [pid 2104] exit_group(0) = ? [pid 2106] <... futex resumed>) = ? [pid 2105] <... futex resumed>) = ? [pid 2105] +++ exited with 0 +++ [pid 2106] +++ exited with 0 +++ [pid 2104] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2104, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2107 ./strace-static-x86_64: Process 2107 attached [pid 2107] set_robust_list(0x5555564465e0, 24) = 0 [pid 2107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2107] setpgid(0, 0) = 0 [pid 2107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2107] write(3, "1000", 4) = 4 [pid 2107] close(3) = 0 [pid 2107] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2107] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2107] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2108], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2108 [pid 2107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2107] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2108 attached [pid 2108] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2108] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2107] <... futex resumed>) = 0 [pid 2107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2107] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2108] <... futex resumed>) = 1 [pid 2108] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2107] <... futex resumed>) = 0 [pid 2108] <... futex resumed>) = 1 [pid 2107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2108] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2107] <... futex resumed>) = 0 [pid 2107] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2108] <... mount resumed>) = 0 [pid 2108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2107] <... futex resumed>) = 0 [pid 2107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2107] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2108] umount2("./file0", MNT_DETACH [pid 2107] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2107] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2108] <... umount2 resumed>) = 0 [pid 2107] <... clone resumed>, parent_tid=[2109], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2109 [pid 2108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2107] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2107] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2109 attached [pid 2109] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2109] umount2("./file0", MNT_DETACH [pid 2108] <... futex resumed>) = 0 [pid 2109] <... umount2 resumed>) = 0 [pid 2109] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2107] <... futex resumed>) = 0 [pid 2107] exit_group(0 [pid 2108] ????( [pid 2107] <... exit_group resumed>) = ? [pid 2108] <... ???? resumed>) = 0xe7 [pid 2108] +++ exited with 0 +++ [pid 2109] <... futex resumed>) = ? [pid 2109] +++ exited with 0 +++ [pid 2107] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2107, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2110 attached , child_tidptr=0x5555564465d0) = 2110 [pid 2110] set_robust_list(0x5555564465e0, 24) = 0 [pid 2110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2110] setpgid(0, 0) = 0 [pid 2110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2110] write(3, "1000", 4) = 4 [pid 2110] close(3) = 0 [pid 2110] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2110] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2110] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2111], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2111 [pid 2110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2110] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2111 attached [pid 2111] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2111] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2110] <... futex resumed>) = 0 [pid 2110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2110] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2111] <... futex resumed>) = 1 [pid 2111] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2110] <... futex resumed>) = 0 [pid 2110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2110] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2111] <... futex resumed>) = 1 [pid 2111] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2110] <... futex resumed>) = 0 [pid 2110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2111] umount2("./file0", MNT_DETACH [pid 2110] <... futex resumed>) = 0 [pid 2110] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2110] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2110] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2111] <... umount2 resumed>) = 0 [pid 2110] <... clone resumed>, parent_tid=[2112], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2112 [pid 2110] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2110] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2112 attached [pid 2112] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2112] umount2("./file0", MNT_DETACH [pid 2111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2112] <... umount2 resumed>) = 0 [pid 2111] <... futex resumed>) = 0 [pid 2112] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2110] <... futex resumed>) = 0 [pid 2110] exit_group(0) = ? [pid 2112] <... futex resumed>) = ? [pid 2111] +++ exited with 0 +++ [pid 2112] +++ exited with 0 +++ [pid 2110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2110, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2113 ./strace-static-x86_64: Process 2113 attached [pid 2113] set_robust_list(0x5555564465e0, 24) = 0 [pid 2113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2113] setpgid(0, 0) = 0 [pid 2113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2113] write(3, "1000", 4) = 4 [pid 2113] close(3) = 0 [pid 2113] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2113] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2113] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2114], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2114 [pid 2113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2113] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2114 attached [pid 2114] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2114] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2113] <... futex resumed>) = 0 [pid 2113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2113] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2114] <... futex resumed>) = 1 [pid 2114] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2113] <... futex resumed>) = 0 [pid 2114] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2114] <... mount resumed>) = 0 [pid 2113] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2113] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2114] <... futex resumed>) = 0 [pid 2113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2114] umount2("./file0", MNT_DETACH [pid 2113] <... futex resumed>) = 0 [pid 2113] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2114] <... umount2 resumed>) = 0 [pid 2113] <... mmap resumed>) = 0x7fc84e05e000 [pid 2114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2113] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2114] <... futex resumed>) = 0 [pid 2113] <... mprotect resumed>) = 0 [pid 2114] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2113] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2115 attached , parent_tid=[2115], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2115 [pid 2113] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2113] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2115] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2115] umount2("./file0", MNT_DETACH) = 0 [pid 2115] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2113] <... futex resumed>) = 0 [pid 2113] exit_group(0) = ? [pid 2114] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 2114] +++ exited with 0 +++ [pid 2115] +++ exited with 0 +++ [pid 2113] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2113, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2116 attached , child_tidptr=0x5555564465d0) = 2116 [pid 2116] set_robust_list(0x5555564465e0, 24) = 0 [pid 2116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2116] setpgid(0, 0) = 0 [pid 2116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2116] write(3, "1000", 4) = 4 [pid 2116] close(3) = 0 [pid 2116] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2116] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2116] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2117 attached [pid 2117] set_robust_list(0x7fc84e09f9e0, 24 [pid 2116] <... clone resumed>, parent_tid=[2117], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2117 [pid 2117] <... set_robust_list resumed>) = 0 [pid 2116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2116] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2117] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2116] <... futex resumed>) = 0 [pid 2117] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2117] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2116] <... futex resumed>) = 0 [pid 2116] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2117] <... mount resumed>) = 0 [pid 2117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2117] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2116] <... futex resumed>) = 0 [pid 2116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2117] <... futex resumed>) = 0 [pid 2117] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2116] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2117] <... mount resumed>) = 0 [pid 2117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2117] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2116] <... futex resumed>) = 0 [pid 2116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2117] <... futex resumed>) = 0 [pid 2117] umount2("./file0", MNT_DETACH [pid 2116] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2117] <... umount2 resumed>) = 0 [pid 2116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2117] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2116] <... mmap resumed>) = 0x7fc84e05e000 [pid 2116] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2116] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2118 attached , parent_tid=[2118], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2118 [pid 2118] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2116] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2118] umount2("./file0", MNT_DETACH [pid 2116] <... futex resumed>) = 0 [pid 2116] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2118] <... umount2 resumed>) = 0 [pid 2118] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2116] <... futex resumed>) = 0 [pid 2118] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2116] exit_group(0 [pid 2118] <... futex resumed>) = ? [pid 2116] <... exit_group resumed>) = ? [pid 2117] <... futex resumed>) = ? [pid 2117] +++ exited with 0 +++ [pid 2118] +++ exited with 0 +++ [pid 2116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2116, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2119 ./strace-static-x86_64: Process 2119 attached [pid 2119] set_robust_list(0x5555564465e0, 24) = 0 [pid 2119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2119] setpgid(0, 0) = 0 [pid 2119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2119] write(3, "1000", 4) = 4 [pid 2119] close(3) = 0 [pid 2119] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2119] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2119] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2120], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2120 ./strace-static-x86_64: Process 2120 attached [pid 2120] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2120] mkdir("./file0", 000 [pid 2119] <... futex resumed>) = 0 [pid 2120] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2119] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2120] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2120] <... futex resumed>) = 0 [pid 2120] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2119] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2120] <... mount resumed>) = 0 [pid 2120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2119] <... futex resumed>) = 0 [pid 2119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2119] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2120] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2119] <... futex resumed>) = 0 [pid 2119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2119] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2119] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2119] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2121], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2121 [pid 2120] umount2("./file0", MNT_DETACH [pid 2119] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2119] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2121 attached [pid 2121] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2121] umount2("./file0", MNT_DETACH) = 0 [pid 2121] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2119] <... futex resumed>) = 0 [pid 2121] <... futex resumed>) = 1 [pid 2121] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2120] <... umount2 resumed>) = 0 [pid 2120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2120] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2119] exit_group(0) = ? [pid 2120] <... futex resumed>) = ? [pid 2120] +++ exited with 0 +++ [pid 2121] <... futex resumed>) = ? [pid 2121] +++ exited with 0 +++ [pid 2119] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2119, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2122 attached , child_tidptr=0x5555564465d0) = 2122 [pid 2122] set_robust_list(0x5555564465e0, 24) = 0 [pid 2122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2122] setpgid(0, 0) = 0 [pid 2122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2122] write(3, "1000", 4) = 4 [pid 2122] close(3) = 0 [pid 2122] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2122] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2122] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2123], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2123 [pid 2122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2123 attached [pid 2123] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2123] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2122] <... futex resumed>) = 0 [pid 2122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2123] <... futex resumed>) = 1 [pid 2123] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2122] <... futex resumed>) = 0 [pid 2122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2123] <... futex resumed>) = 1 [pid 2123] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2122] <... futex resumed>) = 0 [pid 2122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2122] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2122] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2124 attached [pid 2123] umount2("./file0", MNT_DETACH [pid 2122] <... clone resumed>, parent_tid=[2124], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2124 [pid 2122] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2122] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2124] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2123] <... umount2 resumed>) = 0 [pid 2124] umount2("./file0", MNT_DETACH [pid 2123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2124] <... umount2 resumed>) = 0 [pid 2123] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2124] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2124] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2122] <... futex resumed>) = 0 [pid 2122] exit_group(0) = ? [pid 2124] <... futex resumed>) = ? [pid 2123] <... futex resumed>) = ? [pid 2123] +++ exited with 0 +++ [pid 2124] +++ exited with 0 +++ [pid 2122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2122, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2125 attached , child_tidptr=0x5555564465d0) = 2125 [pid 2125] set_robust_list(0x5555564465e0, 24) = 0 [pid 2125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2125] setpgid(0, 0) = 0 [pid 2125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2125] write(3, "1000", 4) = 4 [pid 2125] close(3) = 0 [pid 2125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2125] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2125] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2126 attached [pid 2126] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2126] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2125] <... clone resumed>, parent_tid=[2126], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2126 [pid 2125] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2126] <... futex resumed>) = 0 [pid 2126] mkdir("./file0", 000 [pid 2125] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2126] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2126] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2126] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2125] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2126] <... mount resumed>) = 0 [pid 2125] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2126] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2126] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2125] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2126] <... futex resumed>) = 0 [pid 2126] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2125] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2126] <... mount resumed>) = 0 [pid 2126] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2125] <... futex resumed>) = 0 [pid 2125] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2125] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2125] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2126] umount2("./file0", MNT_DETACH [pid 2125] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2126] <... umount2 resumed>) = 0 [pid 2125] <... clone resumed>, parent_tid=[2127], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2127 [pid 2125] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2125] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2127 attached [pid 2126] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2127] set_robust_list(0x7fc84e07e9e0, 24 [pid 2126] <... futex resumed>) = 0 [pid 2127] <... set_robust_list resumed>) = 0 [pid 2126] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2127] umount2("./file0", MNT_DETACH) = 0 [pid 2127] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2125] <... futex resumed>) = 0 [pid 2125] exit_group(0 [pid 2126] <... futex resumed>) = ? [pid 2126] +++ exited with 0 +++ [pid 2127] +++ exited with 0 +++ [pid 2125] <... exit_group resumed>) = ? [pid 2125] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2125, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2128 attached , child_tidptr=0x5555564465d0) = 2128 [pid 2128] set_robust_list(0x5555564465e0, 24) = 0 [pid 2128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2128] setpgid(0, 0) = 0 [pid 2128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2128] write(3, "1000", 4) = 4 [pid 2128] close(3) = 0 [pid 2128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2128] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2128] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2129 attached , parent_tid=[2129], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2129 [pid 2128] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2128] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2129] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2129] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2129] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2129] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2128] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2128] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2129] <... futex resumed>) = 0 [pid 2128] <... futex resumed>) = 1 [pid 2129] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2128] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2129] <... mount resumed>) = 0 [pid 2129] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2128] <... futex resumed>) = 0 [pid 2129] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2128] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2129] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2128] <... futex resumed>) = 0 [pid 2129] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2128] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2129] <... mount resumed>) = 0 [pid 2129] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2128] <... futex resumed>) = 0 [pid 2129] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2128] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2129] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2128] <... futex resumed>) = 0 [pid 2129] umount2("./file0", MNT_DETACH [pid 2128] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2129] <... umount2 resumed>) = 0 [pid 2129] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2128] <... futex resumed>) = 0 [pid 2129] <... futex resumed>) = 0 [pid 2128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2129] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2128] <... mmap resumed>) = 0x7fc84e05e000 [pid 2128] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2128] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2130 attached , parent_tid=[2130], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2130 [pid 2128] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2128] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2130] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2130] umount2("./file0", MNT_DETACH) = 0 [pid 2130] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2128] <... futex resumed>) = 0 [pid 2128] exit_group(0 [pid 2129] <... futex resumed>) = ? [pid 2128] <... exit_group resumed>) = ? [pid 2129] +++ exited with 0 +++ [pid 2130] +++ exited with 0 +++ [pid 2128] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2128, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2131 ./strace-static-x86_64: Process 2131 attached [pid 2131] set_robust_list(0x5555564465e0, 24) = 0 [pid 2131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2131] setpgid(0, 0) = 0 [pid 2131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2131] write(3, "1000", 4) = 4 [pid 2131] close(3) = 0 [pid 2131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2131] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2131] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2132 attached , parent_tid=[2132], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2132 [pid 2132] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2131] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2132] mkdir("./file0", 000 [pid 2131] <... futex resumed>) = 0 [pid 2131] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2132] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2132] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2131] <... futex resumed>) = 0 [pid 2131] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2132] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2131] <... futex resumed>) = 0 [pid 2131] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2132] <... mount resumed>) = 0 [pid 2132] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2131] <... futex resumed>) = 0 [pid 2131] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2131] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2132] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2132] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2131] <... futex resumed>) = 0 [pid 2131] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2131] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2132] umount2("./file0", MNT_DETACH [pid 2131] <... mmap resumed>) = 0x7fc84e05e000 [pid 2131] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2132] <... umount2 resumed>) = 0 [pid 2131] <... mprotect resumed>) = 0 [pid 2131] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2133], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2133 [pid 2132] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2131] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2131] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2133 attached [pid 2133] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2133] umount2("./file0", MNT_DETACH [pid 2132] <... futex resumed>) = 0 [pid 2133] <... umount2 resumed>) = 0 [pid 2132] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2133] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2131] <... futex resumed>) = 0 [pid 2131] exit_group(0) = ? [pid 2132] <... futex resumed>) = ? [pid 2133] <... futex resumed>) = ? [pid 2133] +++ exited with 0 +++ [pid 2132] +++ exited with 0 +++ [pid 2131] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2131, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2134 ./strace-static-x86_64: Process 2134 attached [pid 2134] set_robust_list(0x5555564465e0, 24) = 0 [pid 2134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2134] setpgid(0, 0) = 0 [pid 2134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2134] write(3, "1000", 4) = 4 [pid 2134] close(3) = 0 [pid 2134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2134] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2134] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2135 attached , parent_tid=[2135], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2135 [pid 2134] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2134] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2135] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2135] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2135] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2134] <... futex resumed>) = 0 [pid 2135] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2134] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2135] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2134] <... futex resumed>) = 0 [pid 2135] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2134] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2135] <... mount resumed>) = 0 [pid 2135] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2134] <... futex resumed>) = 0 [pid 2134] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2134] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2135] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2135] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2134] <... futex resumed>) = 0 [pid 2134] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2134] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2135] umount2("./file0", MNT_DETACH [pid 2134] <... mmap resumed>) = 0x7fc84e05e000 [pid 2134] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2134] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2136], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2136 [pid 2134] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2134] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2136 attached [pid 2135] <... umount2 resumed>) = 0 [pid 2135] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2136] set_robust_list(0x7fc84e07e9e0, 24 [pid 2135] <... futex resumed>) = 0 [pid 2136] <... set_robust_list resumed>) = 0 [pid 2135] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2136] umount2("./file0", MNT_DETACH) = 0 [pid 2136] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2136] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2134] <... futex resumed>) = 0 [pid 2134] exit_group(0) = ? [pid 2136] <... futex resumed>) = ? [pid 2135] <... futex resumed>) = ? [pid 2135] +++ exited with 0 +++ [pid 2136] +++ exited with 0 +++ [pid 2134] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2134, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2137 ./strace-static-x86_64: Process 2137 attached [pid 2137] set_robust_list(0x5555564465e0, 24) = 0 [pid 2137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2137] setpgid(0, 0) = 0 [pid 2137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2137] write(3, "1000", 4) = 4 [pid 2137] close(3) = 0 [pid 2137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2137] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2137] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2138 attached , parent_tid=[2138], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2138 [pid 2138] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2138] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2137] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2138] <... futex resumed>) = 0 [pid 2137] <... futex resumed>) = 1 [pid 2138] mkdir("./file0", 000 [pid 2137] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2138] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2138] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2137] <... futex resumed>) = 0 [pid 2137] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2137] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2138] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2138] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2137] <... futex resumed>) = 0 [pid 2137] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2137] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2138] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2138] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2137] <... futex resumed>) = 0 [pid 2137] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2137] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2137] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2137] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2138] umount2("./file0", MNT_DETACH) = 0 [pid 2137] <... clone resumed>, parent_tid=[2139], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2139 [pid 2137] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2137] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2139 attached [pid 2139] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2139] umount2("./file0", MNT_DETACH [pid 2138] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2139] <... umount2 resumed>) = 0 [pid 2139] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2137] <... futex resumed>) = 0 [pid 2137] exit_group(0) = ? [pid 2138] <... futex resumed>) = ? [pid 2139] <... futex resumed>) = ? [pid 2138] +++ exited with 0 +++ [pid 2139] +++ exited with 0 +++ [pid 2137] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2137, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2140 ./strace-static-x86_64: Process 2140 attached [pid 2140] set_robust_list(0x5555564465e0, 24) = 0 [pid 2140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2140] setpgid(0, 0) = 0 [pid 2140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2140] write(3, "1000", 4) = 4 [pid 2140] close(3) = 0 [pid 2140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2140] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2140] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2141], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2141 [pid 2140] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2140] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2141 attached [pid 2141] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2141] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2141] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2140] <... futex resumed>) = 0 [pid 2140] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2140] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2141] <... futex resumed>) = 1 [pid 2141] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2141] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2140] <... futex resumed>) = 0 [pid 2141] <... futex resumed>) = 1 [pid 2140] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2141] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2140] <... futex resumed>) = 0 [pid 2140] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2141] <... mount resumed>) = 0 [pid 2141] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2140] <... futex resumed>) = 0 [pid 2140] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2140] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2140] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2141] umount2("./file0", MNT_DETACH [pid 2140] <... mprotect resumed>) = 0 [pid 2140] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2142], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2142 ./strace-static-x86_64: Process 2142 attached [pid 2140] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2141] <... umount2 resumed>) = 0 [pid 2140] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2142] set_robust_list(0x7fc84e07e9e0, 24 [pid 2141] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2142] <... set_robust_list resumed>) = 0 [pid 2141] <... futex resumed>) = 0 [pid 2142] umount2("./file0", MNT_DETACH [pid 2141] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2142] <... umount2 resumed>) = 0 [pid 2142] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2140] <... futex resumed>) = 0 [pid 2140] exit_group(0) = ? [pid 2141] <... futex resumed>) = ? [pid 2141] +++ exited with 0 +++ [pid 2142] +++ exited with 0 +++ [pid 2140] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2140, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2143 attached , child_tidptr=0x5555564465d0) = 2143 [pid 2143] set_robust_list(0x5555564465e0, 24) = 0 [pid 2143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2143] setpgid(0, 0) = 0 [pid 2143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2143] write(3, "1000", 4) = 4 [pid 2143] close(3) = 0 [pid 2143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2143] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2143] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2143] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2144 attached , parent_tid=[2144], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2144 [pid 2144] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2144] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2143] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2144] <... futex resumed>) = 0 [pid 2143] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2144] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2144] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2143] <... futex resumed>) = 0 [pid 2143] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2143] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2144] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2144] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2143] <... futex resumed>) = 0 [pid 2144] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2143] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2143] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2144] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2144] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2143] <... futex resumed>) = 0 [pid 2143] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2143] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2143] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2143] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2144] umount2("./file0", MNT_DETACH [pid 2143] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2144] <... umount2 resumed>) = 0 [pid 2143] <... clone resumed>, parent_tid=[2145], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2145 [pid 2144] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2145 attached [pid 2145] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2145] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2144] <... futex resumed>) = 0 [pid 2143] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2144] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2143] <... futex resumed>) = 1 [pid 2145] <... futex resumed>) = 0 [pid 2145] umount2("./file0", MNT_DETACH [pid 2143] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2145] <... umount2 resumed>) = 0 [pid 2145] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2145] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2143] <... futex resumed>) = 0 [pid 2143] exit_group(0) = ? [pid 2144] <... futex resumed>) = ? [pid 2145] <... futex resumed>) = ? [pid 2144] +++ exited with 0 +++ [pid 2145] +++ exited with 0 +++ [pid 2143] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2143, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2146 ./strace-static-x86_64: Process 2146 attached [pid 2146] set_robust_list(0x5555564465e0, 24) = 0 [pid 2146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2146] setpgid(0, 0) = 0 [pid 2146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2146] write(3, "1000", 4) = 4 [pid 2146] close(3) = 0 [pid 2146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2146] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2146] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2147], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2147 [pid 2146] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2146] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2147 attached [pid 2147] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2147] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2147] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2146] <... futex resumed>) = 0 [pid 2146] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2146] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2147] <... futex resumed>) = 1 [pid 2147] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2147] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2146] <... futex resumed>) = 0 [pid 2147] <... futex resumed>) = 1 [pid 2146] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2147] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2146] <... futex resumed>) = 0 [pid 2146] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2147] <... mount resumed>) = 0 [pid 2147] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2146] <... futex resumed>) = 0 [pid 2147] <... futex resumed>) = 1 [pid 2146] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2147] umount2("./file0", MNT_DETACH [pid 2146] <... futex resumed>) = 0 [pid 2146] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2146] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2146] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2147] <... umount2 resumed>) = 0 [pid 2147] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2148 attached ) = 0 [pid 2148] set_robust_list(0x7fc84e07e9e0, 24 [pid 2146] <... clone resumed>, parent_tid=[2148], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2148 [pid 2147] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2148] <... set_robust_list resumed>) = 0 [pid 2146] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2148] umount2("./file0", MNT_DETACH [pid 2146] <... futex resumed>) = 0 [pid 2146] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2148] <... umount2 resumed>) = 0 [pid 2148] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2146] <... futex resumed>) = 0 [pid 2148] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2146] exit_group(0 [pid 2147] <... futex resumed>) = ? [pid 2146] <... exit_group resumed>) = ? [pid 2147] +++ exited with 0 +++ [pid 2148] <... futex resumed>) = ? [pid 2148] +++ exited with 0 +++ [pid 2146] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2146, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2149 attached , child_tidptr=0x5555564465d0) = 2149 [pid 2149] set_robust_list(0x5555564465e0, 24) = 0 [pid 2149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2149] setpgid(0, 0) = 0 [pid 2149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2149] write(3, "1000", 4) = 4 [pid 2149] close(3) = 0 [pid 2149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2149] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2149] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2150], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2150 [pid 2149] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2149] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2150 attached [pid 2150] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2150] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2150] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2149] <... futex resumed>) = 0 [pid 2150] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2149] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2150] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2149] <... futex resumed>) = 0 [pid 2150] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2149] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2150] <... mount resumed>) = 0 [pid 2150] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2149] <... futex resumed>) = 0 [pid 2150] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2149] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2149] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2150] <... mount resumed>) = 0 [pid 2150] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2149] <... futex resumed>) = 0 [pid 2150] <... futex resumed>) = 1 [pid 2149] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2150] umount2("./file0", MNT_DETACH [pid 2149] <... futex resumed>) = 0 [pid 2149] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2149] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2150] <... umount2 resumed>) = 0 [pid 2149] <... mprotect resumed>) = 0 [pid 2150] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2149] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2150] <... futex resumed>) = 0 [pid 2150] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2151 attached [pid 2151] set_robust_list(0x7fc84e07e9e0, 24 [pid 2149] <... clone resumed>, parent_tid=[2151], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2151 [pid 2151] <... set_robust_list resumed>) = 0 [pid 2149] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2151] umount2("./file0", MNT_DETACH [pid 2149] <... futex resumed>) = 0 [pid 2149] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2151] <... umount2 resumed>) = 0 [pid 2151] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2149] <... futex resumed>) = 0 [pid 2151] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2149] exit_group(0) = ? [pid 2150] <... futex resumed>) = ? [pid 2151] <... futex resumed>) = ? [pid 2150] +++ exited with 0 +++ [pid 2151] +++ exited with 0 +++ [pid 2149] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2149, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2152 ./strace-static-x86_64: Process 2152 attached [pid 2152] set_robust_list(0x5555564465e0, 24) = 0 [pid 2152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2152] setpgid(0, 0) = 0 [pid 2152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2152] write(3, "1000", 4) = 4 [pid 2152] close(3) = 0 [pid 2152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2152] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2152] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2153 attached , parent_tid=[2153], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2153 [pid 2153] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2153] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2152] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2153] <... futex resumed>) = 0 [pid 2152] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2153] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2153] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2152] <... futex resumed>) = 0 [pid 2153] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2152] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2152] <... futex resumed>) = 0 [pid 2153] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2152] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2153] <... mount resumed>) = 0 [pid 2153] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2152] <... futex resumed>) = 0 [pid 2153] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2152] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2152] <... futex resumed>) = 0 [pid 2153] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2152] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2153] <... mount resumed>) = 0 [pid 2153] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2152] <... futex resumed>) = 0 [pid 2152] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2152] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2152] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2152] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2153] umount2("./file0", MNT_DETACH [pid 2152] <... clone resumed>, parent_tid=[2154], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2154 [pid 2152] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2154 attached [pid 2153] <... umount2 resumed>) = 0 [pid 2152] <... futex resumed>) = 0 [pid 2152] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2154] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2154] umount2("./file0", MNT_DETACH [pid 2153] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2153] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2154] <... umount2 resumed>) = 0 [pid 2154] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2152] <... futex resumed>) = 0 [pid 2154] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2152] exit_group(0 [pid 2154] <... futex resumed>) = ? [pid 2153] <... futex resumed>) = ? [pid 2152] <... exit_group resumed>) = ? [pid 2153] +++ exited with 0 +++ [pid 2154] +++ exited with 0 +++ [pid 2152] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2152, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2155 attached , child_tidptr=0x5555564465d0) = 2155 [pid 2155] set_robust_list(0x5555564465e0, 24) = 0 [pid 2155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2155] setpgid(0, 0) = 0 [pid 2155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2155] write(3, "1000", 4) = 4 [pid 2155] close(3) = 0 [pid 2155] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2155] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2155] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2155] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2156], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2156 [pid 2155] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2156 attached [pid 2155] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2156] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2156] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2156] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2155] <... futex resumed>) = 0 [pid 2155] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2156] <... futex resumed>) = 0 [pid 2155] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2156] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2155] <... futex resumed>) = 0 [pid 2155] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2155] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2156] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2155] <... futex resumed>) = 0 [pid 2155] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2155] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2155] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2155] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2155] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2156] umount2("./file0", MNT_DETACH [pid 2155] <... clone resumed>, parent_tid=[2157], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2157 ./strace-static-x86_64: Process 2157 attached [pid 2155] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2157] set_robust_list(0x7fc84e07e9e0, 24 [pid 2155] <... futex resumed>) = 0 [pid 2157] <... set_robust_list resumed>) = 0 [pid 2155] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2157] umount2("./file0", MNT_DETACH) = 0 [pid 2157] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2155] <... futex resumed>) = 0 [pid 2157] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2156] <... umount2 resumed>) = 0 [pid 2156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2156] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2155] exit_group(0) = ? [pid 2157] <... futex resumed>) = ? [pid 2156] <... futex resumed>) = ? [pid 2157] +++ exited with 0 +++ [pid 2156] +++ exited with 0 +++ [pid 2155] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2155, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2158 ./strace-static-x86_64: Process 2158 attached [pid 2158] set_robust_list(0x5555564465e0, 24) = 0 [pid 2158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2158] setpgid(0, 0) = 0 [pid 2158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2158] write(3, "1000", 4) = 4 [pid 2158] close(3) = 0 [pid 2158] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2158] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2158] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2159 attached , parent_tid=[2159], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2159 [pid 2159] set_robust_list(0x7fc84e09f9e0, 24 [pid 2158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2159] <... set_robust_list resumed>) = 0 [pid 2158] <... futex resumed>) = 0 [pid 2158] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2159] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2158] <... futex resumed>) = 0 [pid 2158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2158] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2159] <... futex resumed>) = 1 [pid 2159] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2158] <... futex resumed>) = 0 [pid 2158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2158] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2159] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2158] <... futex resumed>) = 0 [pid 2158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2159] umount2("./file0", MNT_DETACH [pid 2158] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2158] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2159] <... umount2 resumed>) = 0 [pid 2158] <... mprotect resumed>) = 0 [pid 2158] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2160 attached ) = 0 [pid 2158] <... clone resumed>, parent_tid=[2160], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2160 [pid 2160] set_robust_list(0x7fc84e07e9e0, 24 [pid 2159] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2158] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2158] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2160] <... set_robust_list resumed>) = 0 [pid 2160] umount2("./file0", MNT_DETACH) = 0 [pid 2160] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2158] <... futex resumed>) = 0 [pid 2160] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2158] exit_group(0 [pid 2159] <... futex resumed>) = ? [pid 2158] <... exit_group resumed>) = ? [pid 2160] <... futex resumed>) = ? [pid 2160] +++ exited with 0 +++ [pid 2159] +++ exited with 0 +++ [pid 2158] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2158, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2161 attached , child_tidptr=0x5555564465d0) = 2161 [pid 2161] set_robust_list(0x5555564465e0, 24) = 0 [pid 2161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2161] setpgid(0, 0) = 0 [pid 2161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2161] write(3, "1000", 4) = 4 [pid 2161] close(3) = 0 [pid 2161] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2161] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2161] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2161] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2162 attached [pid 2162] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] <... clone resumed>, parent_tid=[2162], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2162 [pid 2161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2162] <... futex resumed>) = 0 [pid 2162] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2162] <... futex resumed>) = 0 [pid 2162] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2161] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2162] <... mount resumed>) = 0 [pid 2162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] <... futex resumed>) = 0 [pid 2161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2162] <... futex resumed>) = 0 [pid 2161] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2162] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] <... futex resumed>) = 0 [pid 2161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2161] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2162] <... futex resumed>) = 0 [pid 2162] umount2("./file0", MNT_DETACH [pid 2161] <... futex resumed>) = 0 [pid 2162] <... umount2 resumed>) = 0 [pid 2162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2161] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2161] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2163 attached [pid 2163] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2163] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] <... clone resumed>, parent_tid=[2163], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2163 [pid 2161] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2163] <... futex resumed>) = 0 [pid 2161] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2163] umount2("./file0", MNT_DETACH) = 0 [pid 2163] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2161] <... futex resumed>) = 0 [pid 2163] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2161] exit_group(0 [pid 2162] <... futex resumed>) = ? [pid 2161] <... exit_group resumed>) = ? [pid 2163] <... futex resumed>) = ? [pid 2162] +++ exited with 0 +++ [pid 2163] +++ exited with 0 +++ [pid 2161] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2161, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2164 attached , child_tidptr=0x5555564465d0) = 2164 [pid 2164] set_robust_list(0x5555564465e0, 24) = 0 [pid 2164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2164] setpgid(0, 0) = 0 [pid 2164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2164] write(3, "1000", 4) = 4 [pid 2164] close(3) = 0 [pid 2164] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2164] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2164] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2165], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2165 [pid 2164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2164] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2165 attached [pid 2165] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2165] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2164] <... futex resumed>) = 0 [pid 2164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2164] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2165] <... futex resumed>) = 1 [pid 2165] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2164] <... futex resumed>) = 0 [pid 2164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2164] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2165] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2164] <... futex resumed>) = 0 [pid 2164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2164] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2165] umount2("./file0", MNT_DETACH [pid 2164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2164] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2164] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2165] <... umount2 resumed>) = 0 [pid 2164] <... clone resumed>, parent_tid=[2166], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2166 [pid 2164] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2164] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2166 attached [pid 2166] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2166] umount2("./file0", MNT_DETACH [pid 2165] <... futex resumed>) = 0 [pid 2166] <... umount2 resumed>) = 0 [pid 2166] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2164] <... futex resumed>) = 0 [pid 2166] <... futex resumed>) = 1 [pid 2164] exit_group(0 [pid 2166] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2164] <... exit_group resumed>) = ? [pid 2166] <... futex resumed>) = ? [pid 2166] +++ exited with 0 +++ [pid 2165] +++ exited with 0 +++ [pid 2164] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2164, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2167 ./strace-static-x86_64: Process 2167 attached [pid 2167] set_robust_list(0x5555564465e0, 24) = 0 [pid 2167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2167] setpgid(0, 0) = 0 [pid 2167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2167] write(3, "1000", 4) = 4 [pid 2167] close(3) = 0 [pid 2167] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2167] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2167] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2167] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2168 attached [pid 2168] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2167] <... clone resumed>, parent_tid=[2168], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2168 [pid 2167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2168] <... futex resumed>) = 0 [pid 2168] mkdir("./file0", 000 [pid 2167] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2168] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2167] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2168] <... futex resumed>) = 0 [pid 2168] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2167] <... futex resumed>) = 0 [pid 2167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2168] <... futex resumed>) = 0 [pid 2167] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2168] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2167] <... futex resumed>) = 0 [pid 2167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2167] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2168] <... futex resumed>) = 0 [pid 2168] umount2("./file0", MNT_DETACH [pid 2167] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2168] <... umount2 resumed>) = 0 [pid 2168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2167] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2167] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2169 attached [pid 2169] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2169] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2167] <... clone resumed>, parent_tid=[2169], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2169 [pid 2167] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2169] <... futex resumed>) = 0 [pid 2167] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2169] umount2("./file0", MNT_DETACH) = 0 [pid 2169] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2167] <... futex resumed>) = 0 [pid 2167] exit_group(0) = ? [pid 2168] <... futex resumed>) = ? [pid 2168] +++ exited with 0 +++ [pid 2169] +++ exited with 0 +++ [pid 2167] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2167, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2170 ./strace-static-x86_64: Process 2170 attached [pid 2170] set_robust_list(0x5555564465e0, 24) = 0 [pid 2170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2170] setpgid(0, 0) = 0 [pid 2170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2170] write(3, "1000", 4) = 4 [pid 2170] close(3) = 0 [pid 2170] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2170] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2170] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2171 attached , parent_tid=[2171], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2171 [pid 2170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2170] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2171] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2171] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2170] <... futex resumed>) = 0 [pid 2171] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2170] <... futex resumed>) = 0 [pid 2171] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2170] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2171] <... mount resumed>) = 0 [pid 2171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2170] <... futex resumed>) = 0 [pid 2170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2171] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2170] <... futex resumed>) = 0 [pid 2170] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2171] <... mount resumed>) = 0 [pid 2171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2170] <... futex resumed>) = 0 [pid 2170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2171] umount2("./file0", MNT_DETACH [pid 2170] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2170] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2171] <... umount2 resumed>) = 0 [pid 2170] <... mprotect resumed>) = 0 [pid 2170] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2172 attached [pid 2172] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2172] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2171] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2170] <... clone resumed>, parent_tid=[2172], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2172 [pid 2170] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2172] <... futex resumed>) = 0 [pid 2172] umount2("./file0", MNT_DETACH [pid 2170] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2172] <... umount2 resumed>) = 0 [pid 2172] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2172] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2170] <... futex resumed>) = 0 [pid 2170] exit_group(0) = ? [pid 2171] <... futex resumed>) = ? [pid 2171] +++ exited with 0 +++ [pid 2172] <... futex resumed>) = ? [pid 2172] +++ exited with 0 +++ [pid 2170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2170, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2173 attached , child_tidptr=0x5555564465d0) = 2173 [pid 2173] set_robust_list(0x5555564465e0, 24) = 0 [pid 2173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2173] setpgid(0, 0) = 0 [pid 2173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2173] write(3, "1000", 4) = 4 [pid 2173] close(3) = 0 [pid 2173] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2173] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2173] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2173] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2174 attached , parent_tid=[2174], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2174 [pid 2174] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2174] <... futex resumed>) = 0 [pid 2173] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2174] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2173] <... futex resumed>) = 0 [pid 2173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2174] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2173] <... futex resumed>) = 0 [pid 2174] <... mount resumed>) = 0 [pid 2173] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2173] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2174] <... futex resumed>) = 0 [pid 2173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2174] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2173] <... futex resumed>) = 0 [pid 2174] <... mount resumed>) = 0 [pid 2173] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2173] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2174] <... futex resumed>) = 0 [pid 2174] umount2("./file0", MNT_DETACH [pid 2173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2174] <... umount2 resumed>) = 0 [pid 2173] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2173] <... futex resumed>) = 0 [pid 2174] <... futex resumed>) = 0 [pid 2173] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2173] <... mmap resumed>) = 0x7fc84e05e000 [pid 2173] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2173] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2175 attached , parent_tid=[2175], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2175 [pid 2175] set_robust_list(0x7fc84e07e9e0, 24 [pid 2173] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2175] <... set_robust_list resumed>) = 0 [pid 2173] <... futex resumed>) = 0 [pid 2175] umount2("./file0", MNT_DETACH [pid 2173] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2175] <... umount2 resumed>) = 0 [pid 2175] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2173] <... futex resumed>) = 0 [pid 2175] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2173] exit_group(0) = ? [pid 2174] <... futex resumed>) = 231 [pid 2175] <... futex resumed>) = ? [pid 2174] +++ exited with 0 +++ [pid 2175] +++ exited with 0 +++ [pid 2173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2173, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2176 ./strace-static-x86_64: Process 2176 attached [pid 2176] set_robust_list(0x5555564465e0, 24) = 0 [pid 2176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2176] setpgid(0, 0) = 0 [pid 2176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2176] write(3, "1000", 4) = 4 [pid 2176] close(3) = 0 [pid 2176] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2176] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2176] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2177 attached , parent_tid=[2177], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2177 [pid 2176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2177] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2177] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2176] <... futex resumed>) = 0 [pid 2176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2177] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2176] <... futex resumed>) = 0 [pid 2176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2177] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2176] <... futex resumed>) = 0 [pid 2176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2176] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2177] umount2("./file0", MNT_DETACH [pid 2176] <... futex resumed>) = 0 [pid 2176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2176] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2176] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2178], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2178 [pid 2177] <... umount2 resumed>) = 0 [pid 2176] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2176] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2178 attached [pid 2178] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2178] umount2("./file0", MNT_DETACH [pid 2177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2178] <... umount2 resumed>) = 0 [pid 2177] <... futex resumed>) = 0 [pid 2177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2178] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2176] <... futex resumed>) = 0 [pid 2178] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2176] exit_group(0) = ? [pid 2177] <... futex resumed>) = ? [pid 2177] +++ exited with 0 +++ [pid 2178] <... futex resumed>) = ? [pid 2178] +++ exited with 0 +++ [pid 2176] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2176, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2179 ./strace-static-x86_64: Process 2179 attached [pid 2179] set_robust_list(0x5555564465e0, 24) = 0 [pid 2179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2179] setpgid(0, 0) = 0 [pid 2179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2179] write(3, "1000", 4) = 4 [pid 2179] close(3) = 0 [pid 2179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2179] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2179] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2179] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2180 attached , parent_tid=[2180], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2180 [pid 2180] set_robust_list(0x7fc84e09f9e0, 24 [pid 2179] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2180] <... set_robust_list resumed>) = 0 [pid 2180] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2180] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2179] <... futex resumed>) = 0 [pid 2180] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2179] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2179] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2180] <... futex resumed>) = 0 [pid 2180] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2179] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2180] <... mount resumed>) = 0 [pid 2180] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2180] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2179] <... futex resumed>) = 0 [pid 2179] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2180] <... futex resumed>) = 0 [pid 2180] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2179] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2180] <... mount resumed>) = 0 [pid 2180] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2180] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2179] <... futex resumed>) = 0 [pid 2179] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2180] <... futex resumed>) = 0 [pid 2180] umount2("./file0", MNT_DETACH [pid 2179] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2180] <... umount2 resumed>) = 0 [pid 2180] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2179] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2180] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2179] <... mmap resumed>) = 0x7fc84e05e000 [pid 2179] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2179] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2181 attached , parent_tid=[2181], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2181 [pid 2181] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2181] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2179] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2181] <... futex resumed>) = 0 [pid 2179] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2181] umount2("./file0", MNT_DETACH) = 0 [pid 2181] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2181] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2179] <... futex resumed>) = 0 [pid 2179] exit_group(0 [pid 2181] <... futex resumed>) = ? [pid 2180] <... futex resumed>) = ? [pid 2179] <... exit_group resumed>) = ? [pid 2180] +++ exited with 0 +++ [pid 2181] +++ exited with 0 +++ [pid 2179] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2179, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2182 attached , child_tidptr=0x5555564465d0) = 2182 [pid 2182] set_robust_list(0x5555564465e0, 24) = 0 [pid 2182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2182] setpgid(0, 0) = 0 [pid 2182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2182] write(3, "1000", 4) = 4 [pid 2182] close(3) = 0 [pid 2182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2182] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2182] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2182] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2183 attached , parent_tid=[2183], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2183 [pid 2182] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2182] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2183] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2183] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2183] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2182] <... futex resumed>) = 0 [pid 2183] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 2182] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2183] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2182] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2183] <... mount resumed>) = 0 [pid 2183] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2182] <... futex resumed>) = 0 [pid 2182] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2182] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2183] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2183] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2182] <... futex resumed>) = 0 [pid 2183] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2182] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2182] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2182] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2182] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2182] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2183] <... futex resumed>) = 0 [pid 2182] <... clone resumed>, parent_tid=[2184], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2184 [pid 2182] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2182] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2184 attached [pid 2184] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2184] umount2("./file0", MNT_DETACH [pid 2183] umount2("./file0", MNT_DETACH [pid 2184] <... umount2 resumed>) = 0 [pid 2184] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2182] <... futex resumed>) = 0 [pid 2184] <... futex resumed>) = 1 [pid 2184] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2183] <... umount2 resumed>) = 0 [pid 2183] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2183] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2182] exit_group(0) = ? [pid 2184] <... futex resumed>) = ? [pid 2183] <... futex resumed>) = ? [pid 2184] +++ exited with 0 +++ [pid 2183] +++ exited with 0 +++ [pid 2182] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2182, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2185 attached , child_tidptr=0x5555564465d0) = 2185 [pid 2185] set_robust_list(0x5555564465e0, 24) = 0 [pid 2185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2185] setpgid(0, 0) = 0 [pid 2185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2185] write(3, "1000", 4) = 4 [pid 2185] close(3) = 0 [pid 2185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2185] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2185] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2186 attached , parent_tid=[2186], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2186 [pid 2185] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2185] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2186] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2186] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2186] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2185] <... futex resumed>) = 0 [pid 2185] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2185] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2186] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2186] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2185] <... futex resumed>) = 0 [pid 2186] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2185] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2186] <... mount resumed>) = 0 [pid 2185] <... futex resumed>) = 0 [pid 2186] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2185] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2186] <... futex resumed>) = 0 [pid 2185] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2186] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2185] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2186] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2185] <... futex resumed>) = 0 [pid 2186] umount2("./file0", MNT_DETACH [pid 2185] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2185] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2185] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2187 attached , parent_tid=[2187], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2187 [pid 2185] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2185] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2186] <... umount2 resumed>) = 0 [pid 2186] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2186] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2187] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2187] umount2("./file0", MNT_DETACH) = 0 [pid 2187] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2185] <... futex resumed>) = 0 [pid 2187] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2185] exit_group(0 [pid 2186] <... futex resumed>) = ? [pid 2185] <... exit_group resumed>) = ? [pid 2186] +++ exited with 0 +++ [pid 2187] <... futex resumed>) = ? [pid 2187] +++ exited with 0 +++ [pid 2185] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2185, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2188 attached , child_tidptr=0x5555564465d0) = 2188 [pid 2188] set_robust_list(0x5555564465e0, 24) = 0 [pid 2188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2188] setpgid(0, 0) = 0 [pid 2188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2188] write(3, "1000", 4) = 4 [pid 2188] close(3) = 0 [pid 2188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2188] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2188] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2188] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2189], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2189 [pid 2188] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2188] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2189 attached [pid 2189] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2189] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2189] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2188] <... futex resumed>) = 0 [pid 2188] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2188] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2189] <... futex resumed>) = 1 [pid 2189] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2189] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2188] <... futex resumed>) = 0 [pid 2189] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2188] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2188] <... futex resumed>) = 0 [pid 2189] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2188] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2189] <... mount resumed>) = 0 [pid 2189] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2188] <... futex resumed>) = 0 [pid 2188] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2188] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2189] umount2("./file0", MNT_DETACH [pid 2188] <... futex resumed>) = 0 [pid 2188] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2188] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2188] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2190], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2190 [pid 2188] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2189] <... umount2 resumed>) = 0 [pid 2188] <... futex resumed>) = 0 [pid 2188] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2190 attached [pid 2190] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2190] umount2("./file0", MNT_DETACH [pid 2189] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2190] <... umount2 resumed>) = 0 [pid 2190] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2188] <... futex resumed>) = 0 [pid 2188] exit_group(0) = ? [pid 2189] <... futex resumed>) = ? [pid 2189] +++ exited with 0 +++ [pid 2190] <... futex resumed>) = ? [pid 2190] +++ exited with 0 +++ [pid 2188] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2188, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2191 ./strace-static-x86_64: Process 2191 attached [pid 2191] set_robust_list(0x5555564465e0, 24) = 0 [pid 2191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2191] setpgid(0, 0) = 0 [pid 2191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2191] write(3, "1000", 4) = 4 [pid 2191] close(3) = 0 [pid 2191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2191] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2191] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2191] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2192 attached , parent_tid=[2192], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2192 [pid 2192] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2192] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2191] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2192] <... futex resumed>) = 0 [pid 2192] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2192] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2191] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2192] <... futex resumed>) = 0 [pid 2192] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2191] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2192] <... futex resumed>) = 0 [pid 2192] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2191] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2192] <... mount resumed>) = 0 [pid 2192] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2191] <... futex resumed>) = 0 [pid 2192] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 2191] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2191] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2192] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2192] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2191] <... futex resumed>) = 0 [pid 2191] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2192] umount2("./file0", MNT_DETACH [pid 2191] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2191] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2191] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2191] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2193], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2193 [pid 2192] <... umount2 resumed>) = 0 [pid 2191] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2191] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2193 attached [pid 2193] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2192] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2193] umount2("./file0", MNT_DETACH [pid 2192] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2193] <... umount2 resumed>) = 0 [pid 2193] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2191] <... futex resumed>) = 0 [pid 2191] exit_group(0) = ? [pid 2193] +++ exited with 0 +++ [pid 2192] <... futex resumed>) = ? [pid 2192] +++ exited with 0 +++ [pid 2191] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2191, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2194 attached , child_tidptr=0x5555564465d0) = 2194 [pid 2194] set_robust_list(0x5555564465e0, 24) = 0 [pid 2194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2194] setpgid(0, 0) = 0 [pid 2194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2194] write(3, "1000", 4) = 4 [pid 2194] close(3) = 0 [pid 2194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2194] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2194] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2195 attached , parent_tid=[2195], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2195 [pid 2195] set_robust_list(0x7fc84e09f9e0, 24 [pid 2194] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2195] <... set_robust_list resumed>) = 0 [pid 2194] <... futex resumed>) = 0 [pid 2194] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2195] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2195] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2194] <... futex resumed>) = 0 [pid 2194] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2194] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2195] <... futex resumed>) = 1 [pid 2195] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2195] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2194] <... futex resumed>) = 0 [pid 2194] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2194] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2195] <... futex resumed>) = 1 [pid 2195] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2195] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2194] <... futex resumed>) = 0 [pid 2195] <... futex resumed>) = 1 [pid 2194] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2195] umount2("./file0", MNT_DETACH [pid 2194] <... futex resumed>) = 0 [pid 2194] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2194] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2195] <... umount2 resumed>) = 0 [pid 2194] <... mprotect resumed>) = 0 [pid 2195] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2194] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2195] <... futex resumed>) = 0 [pid 2195] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2196 attached [pid 2194] <... clone resumed>, parent_tid=[2196], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2196 [pid 2196] set_robust_list(0x7fc84e07e9e0, 24 [pid 2194] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2194] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2196] <... set_robust_list resumed>) = 0 [pid 2196] umount2("./file0", MNT_DETACH) = 0 [pid 2196] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2194] <... futex resumed>) = 0 [pid 2196] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2194] exit_group(0) = ? [pid 2195] <... futex resumed>) = 231 [pid 2196] <... futex resumed>) = ? [pid 2195] +++ exited with 0 +++ [pid 2196] +++ exited with 0 +++ [pid 2194] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2194, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2197 ./strace-static-x86_64: Process 2197 attached [pid 2197] set_robust_list(0x5555564465e0, 24) = 0 [pid 2197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2197] setpgid(0, 0) = 0 [pid 2197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2197] write(3, "1000", 4) = 4 [pid 2197] close(3) = 0 [pid 2197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2197] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2197] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2197] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2198], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2198 [pid 2197] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2197] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2198 attached [pid 2198] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2198] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2198] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2197] <... futex resumed>) = 0 [pid 2197] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2197] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2198] <... futex resumed>) = 1 [pid 2198] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2198] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2197] <... futex resumed>) = 0 [pid 2197] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2197] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2198] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2198] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2197] <... futex resumed>) = 0 [pid 2197] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2197] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2197] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2197] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2198] umount2("./file0", MNT_DETACH [pid 2197] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2199], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2199 [pid 2198] <... umount2 resumed>) = 0 [pid 2197] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2199 attached ) = 0 [pid 2199] set_robust_list(0x7fc84e07e9e0, 24 [pid 2197] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2199] <... set_robust_list resumed>) = 0 [pid 2199] umount2("./file0", MNT_DETACH [pid 2198] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2199] <... umount2 resumed>) = 0 [pid 2199] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2197] <... futex resumed>) = 0 [pid 2199] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2197] exit_group(0) = ? [pid 2199] <... futex resumed>) = ? [pid 2198] <... futex resumed>) = ? [pid 2199] +++ exited with 0 +++ [pid 2198] +++ exited with 0 +++ [pid 2197] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2197, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2200 attached , child_tidptr=0x5555564465d0) = 2200 [pid 2200] set_robust_list(0x5555564465e0, 24) = 0 [pid 2200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2200] setpgid(0, 0) = 0 [pid 2200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2200] write(3, "1000", 4) = 4 [pid 2200] close(3) = 0 [pid 2200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2200] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2200] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2201 attached , parent_tid=[2201], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2201 [pid 2200] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2200] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2201] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2201] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2201] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2200] <... futex resumed>) = 0 [pid 2200] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2200] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2201] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2201] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2200] <... futex resumed>) = 0 [pid 2201] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2200] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2201] <... mount resumed>) = 0 [pid 2200] <... futex resumed>) = 0 [pid 2201] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2200] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2201] <... futex resumed>) = 0 [pid 2200] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2201] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2200] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2200] <... futex resumed>) = 0 [pid 2201] umount2("./file0", MNT_DETACH [pid 2200] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2200] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2200] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2202], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2202 [pid 2200] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2202 attached [pid 2201] <... umount2 resumed>) = 0 [pid 2202] set_robust_list(0x7fc84e07e9e0, 24 [pid 2201] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2202] <... set_robust_list resumed>) = 0 [pid 2201] <... futex resumed>) = 0 [pid 2202] umount2("./file0", MNT_DETACH [pid 2201] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2202] <... umount2 resumed>) = 0 [pid 2202] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2202] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2200] <... futex resumed>) = 1 [pid 2202] <... futex resumed>) = 0 [pid 2202] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2200] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2200] exit_group(0 [pid 2201] <... futex resumed>) = ? [pid 2200] <... exit_group resumed>) = ? [pid 2201] +++ exited with 0 +++ [pid 2202] <... futex resumed>) = ? [pid 2202] +++ exited with 0 +++ [pid 2200] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2200, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2203 ./strace-static-x86_64: Process 2203 attached [pid 2203] set_robust_list(0x5555564465e0, 24) = 0 [pid 2203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2203] setpgid(0, 0) = 0 [pid 2203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2203] write(3, "1000", 4) = 4 [pid 2203] close(3) = 0 [pid 2203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2203] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2203] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2203] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2204 attached , parent_tid=[2204], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2204 [pid 2204] set_robust_list(0x7fc84e09f9e0, 24 [pid 2203] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2204] <... set_robust_list resumed>) = 0 [pid 2204] mkdir("./file0", 000 [pid 2203] <... futex resumed>) = 0 [pid 2204] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2204] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2204] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2203] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2203] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2203] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2204] <... futex resumed>) = 0 [pid 2204] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2204] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2203] <... futex resumed>) = 0 [pid 2204] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2203] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2204] <... mount resumed>) = 0 [pid 2203] <... futex resumed>) = 0 [pid 2204] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2204] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2203] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2203] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2204] <... futex resumed>) = 0 [pid 2204] umount2("./file0", MNT_DETACH) = 0 [pid 2203] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2204] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2204] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2203] <... futex resumed>) = 0 [pid 2203] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2203] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2203] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2205 attached [pid 2205] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2205] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2203] <... clone resumed>, parent_tid=[2205], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2205 [pid 2203] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2205] <... futex resumed>) = 0 [pid 2203] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2205] umount2("./file0", MNT_DETACH) = 0 [pid 2205] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2203] <... futex resumed>) = 0 [pid 2203] exit_group(0) = ? [pid 2204] <... futex resumed>) = ? [pid 2204] +++ exited with 0 +++ [pid 2205] +++ exited with 0 +++ [pid 2203] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2203, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2206 attached , child_tidptr=0x5555564465d0) = 2206 [pid 2206] set_robust_list(0x5555564465e0, 24) = 0 [pid 2206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2206] setpgid(0, 0) = 0 [pid 2206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2206] write(3, "1000", 4) = 4 [pid 2206] close(3) = 0 [pid 2206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2206] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2206] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2207 attached [pid 2207] set_robust_list(0x7fc84e09f9e0, 24 [pid 2206] <... clone resumed>, parent_tid=[2207], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2207 [pid 2207] <... set_robust_list resumed>) = 0 [pid 2207] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2206] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2207] <... futex resumed>) = 0 [pid 2207] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2206] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2207] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2207] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2206] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2207] <... futex resumed>) = 0 [pid 2206] <... futex resumed>) = 1 [pid 2207] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2206] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2207] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2207] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2206] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2207] <... futex resumed>) = 0 [pid 2206] <... futex resumed>) = 1 [pid 2207] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2206] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2207] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2207] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2206] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2207] <... futex resumed>) = 0 [pid 2206] <... futex resumed>) = 1 [pid 2207] umount2("./file0", MNT_DETACH [pid 2206] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2207] <... umount2 resumed>) = 0 [pid 2206] <... futex resumed>) = 0 [pid 2207] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2207] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2206] <... mmap resumed>) = 0x7fc84e05e000 [pid 2206] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2206] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2208 attached , parent_tid=[2208], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2208 [pid 2208] set_robust_list(0x7fc84e07e9e0, 24 [pid 2206] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2208] <... set_robust_list resumed>) = 0 [pid 2208] umount2("./file0", MNT_DETACH [pid 2206] <... futex resumed>) = 0 [pid 2206] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2208] <... umount2 resumed>) = 0 [pid 2208] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2206] <... futex resumed>) = 0 [pid 2208] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2206] exit_group(0 [pid 2207] <... futex resumed>) = ? [pid 2206] <... exit_group resumed>) = ? [pid 2207] +++ exited with 0 +++ [pid 2208] <... futex resumed>) = ? [pid 2208] +++ exited with 0 +++ [pid 2206] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2206, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2209 ./strace-static-x86_64: Process 2209 attached [pid 2209] set_robust_list(0x5555564465e0, 24) = 0 [pid 2209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2209] setpgid(0, 0) = 0 [pid 2209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2209] write(3, "1000", 4) = 4 [pid 2209] close(3) = 0 [pid 2209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2209] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2209] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2210 attached , parent_tid=[2210], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2210 [pid 2209] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2210] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2210] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2210] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2209] <... futex resumed>) = 0 [pid 2209] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2210] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2210] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2209] <... futex resumed>) = 0 [pid 2209] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2210] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2210] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2209] <... futex resumed>) = 0 [pid 2209] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2209] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2209] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2210] umount2("./file0", MNT_DETACH [pid 2209] <... clone resumed>, parent_tid=[2211], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2211 [pid 2209] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2209] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2211 attached [pid 2211] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2211] umount2("./file0", MNT_DETACH) = 0 [pid 2211] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2209] <... futex resumed>) = 0 [pid 2210] <... umount2 resumed>) = 0 [pid 2211] <... futex resumed>) = 1 [pid 2211] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2210] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2210] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2209] exit_group(0) = ? [pid 2211] <... futex resumed>) = ? [pid 2211] +++ exited with 0 +++ [pid 2210] <... futex resumed>) = ? [pid 2210] +++ exited with 0 +++ [pid 2209] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2209, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2212 ./strace-static-x86_64: Process 2212 attached [pid 2212] set_robust_list(0x5555564465e0, 24) = 0 [pid 2212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2212] setpgid(0, 0) = 0 [pid 2212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2212] write(3, "1000", 4) = 4 [pid 2212] close(3) = 0 [pid 2212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2212] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2212] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2213 attached , parent_tid=[2213], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2213 [pid 2213] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2213] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2212] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2213] <... futex resumed>) = 0 [pid 2212] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2213] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2213] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2212] <... futex resumed>) = 0 [pid 2213] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2212] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2212] <... futex resumed>) = 0 [pid 2213] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2212] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2213] <... mount resumed>) = 0 [pid 2213] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2212] <... futex resumed>) = 0 [pid 2213] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2212] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2213] <... mount resumed>) = 0 [pid 2212] <... futex resumed>) = 0 [pid 2213] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2212] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2213] <... futex resumed>) = 0 [pid 2213] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2212] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2212] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2213] <... futex resumed>) = 0 [pid 2213] umount2("./file0", MNT_DETACH [pid 2212] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2213] <... umount2 resumed>) = 0 [pid 2213] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2213] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2212] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2212] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2214 attached , parent_tid=[2214], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2214 [pid 2214] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2214] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2212] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2214] <... futex resumed>) = 0 [pid 2212] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2214] umount2("./file0", MNT_DETACH) = 0 [pid 2214] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2212] <... futex resumed>) = 0 [pid 2214] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2212] exit_group(0 [pid 2213] <... futex resumed>) = ? [pid 2212] <... exit_group resumed>) = ? [pid 2213] +++ exited with 0 +++ [pid 2214] <... futex resumed>) = ? [pid 2214] +++ exited with 0 +++ [pid 2212] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2212, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2215 attached , child_tidptr=0x5555564465d0) = 2215 [pid 2215] set_robust_list(0x5555564465e0, 24) = 0 [pid 2215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2215] setpgid(0, 0) = 0 [pid 2215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2215] write(3, "1000", 4) = 4 [pid 2215] close(3) = 0 [pid 2215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2215] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2215] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2215] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2216 attached , parent_tid=[2216], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2216 [pid 2215] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2215] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2216] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2216] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2216] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2215] <... futex resumed>) = 0 [pid 2215] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2215] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2216] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2216] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2215] <... futex resumed>) = 0 [pid 2215] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2216] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2215] <... futex resumed>) = 0 [pid 2215] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2216] <... mount resumed>) = 0 [pid 2216] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2216] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2215] <... futex resumed>) = 0 [pid 2215] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2215] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2216] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2215] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2215] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2215] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2216] umount2("./file0", MNT_DETACH [pid 2215] <... clone resumed>, parent_tid=[2217], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2217 ./strace-static-x86_64: Process 2217 attached [pid 2215] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2217] set_robust_list(0x7fc84e07e9e0, 24 [pid 2215] <... futex resumed>) = 0 [pid 2217] <... set_robust_list resumed>) = 0 [pid 2215] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2217] umount2("./file0", MNT_DETACH [pid 2216] <... umount2 resumed>) = 0 [pid 2216] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2216] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2217] <... umount2 resumed>) = 0 [pid 2217] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2215] <... futex resumed>) = 0 [pid 2217] <... futex resumed>) = 1 [pid 2217] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2215] exit_group(0 [pid 2217] <... futex resumed>) = 231 [pid 2215] <... exit_group resumed>) = ? [pid 2216] <... futex resumed>) = ? [pid 2216] +++ exited with 0 +++ [pid 2217] +++ exited with 0 +++ [pid 2215] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2215, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2218 ./strace-static-x86_64: Process 2218 attached [pid 2218] set_robust_list(0x5555564465e0, 24) = 0 [pid 2218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2218] setpgid(0, 0) = 0 [pid 2218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2218] write(3, "1000", 4) = 4 [pid 2218] close(3) = 0 [pid 2218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2218] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2218] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2219], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2219 [pid 2218] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2218] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2219 attached [pid 2219] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2219] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2219] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2218] <... futex resumed>) = 0 [pid 2219] <... futex resumed>) = 1 [pid 2218] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2219] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2218] <... futex resumed>) = 0 [pid 2218] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2219] <... mount resumed>) = 0 [pid 2219] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2218] <... futex resumed>) = 0 [pid 2219] <... futex resumed>) = 1 [pid 2218] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2219] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2218] <... futex resumed>) = 0 [pid 2218] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2219] <... mount resumed>) = 0 [pid 2219] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2218] <... futex resumed>) = 0 [pid 2219] <... futex resumed>) = 1 [pid 2218] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2219] umount2("./file0", MNT_DETACH [pid 2218] <... futex resumed>) = 0 [pid 2218] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2219] <... umount2 resumed>) = 0 [pid 2218] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2219] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2218] <... mprotect resumed>) = 0 [pid 2219] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2218] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2220 attached [pid 2220] set_robust_list(0x7fc84e07e9e0, 24 [pid 2218] <... clone resumed>, parent_tid=[2220], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2220 [pid 2220] <... set_robust_list resumed>) = 0 [pid 2218] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2220] umount2("./file0", MNT_DETACH [pid 2218] <... futex resumed>) = 0 [pid 2218] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2220] <... umount2 resumed>) = 0 [pid 2220] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2218] <... futex resumed>) = 0 [pid 2220] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2218] exit_group(0 [pid 2219] <... futex resumed>) = ? [pid 2218] <... exit_group resumed>) = ? [pid 2219] +++ exited with 0 +++ [pid 2220] <... futex resumed>) = ? [pid 2220] +++ exited with 0 +++ [pid 2218] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2218, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2221 ./strace-static-x86_64: Process 2221 attached [pid 2221] set_robust_list(0x5555564465e0, 24) = 0 [pid 2221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2221] setpgid(0, 0) = 0 [pid 2221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2221] write(3, "1000", 4) = 4 [pid 2221] close(3) = 0 [pid 2221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2221] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2221] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2222], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2222 [pid 2221] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2222 attached [pid 2222] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2222] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2222] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2221] <... futex resumed>) = 0 [pid 2221] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2222] <... futex resumed>) = 1 [pid 2222] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2222] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2221] <... futex resumed>) = 0 [pid 2221] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2222] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2222] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2221] <... futex resumed>) = 0 [pid 2221] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2221] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2221] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2223], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2223 [pid 2222] umount2("./file0", MNT_DETACH [pid 2221] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2221] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2223 attached [pid 2223] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2223] umount2("./file0", MNT_DETACH [pid 2222] <... umount2 resumed>) = 0 [pid 2223] <... umount2 resumed>) = 0 [pid 2223] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2221] <... futex resumed>) = 0 [pid 2223] <... futex resumed>) = 1 [pid 2222] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2223] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2222] <... futex resumed>) = 0 [pid 2222] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2221] exit_group(0) = ? [pid 2223] <... futex resumed>) = 231 [pid 2222] <... futex resumed>) = ? [pid 2222] +++ exited with 0 +++ [pid 2223] +++ exited with 0 +++ [pid 2221] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2221, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2224 ./strace-static-x86_64: Process 2224 attached [pid 2224] set_robust_list(0x5555564465e0, 24) = 0 [pid 2224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2224] setpgid(0, 0) = 0 [pid 2224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2224] write(3, "1000", 4) = 4 [pid 2224] close(3) = 0 [pid 2224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2224] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2224] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2225 attached , parent_tid=[2225], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2225 [pid 2225] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2225] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2224] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2225] <... futex resumed>) = 0 [pid 2224] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2225] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2225] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2224] <... futex resumed>) = 0 [pid 2224] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2224] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2225] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2225] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2224] <... futex resumed>) = 0 [pid 2225] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2224] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2224] <... futex resumed>) = 0 [pid 2225] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2224] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2225] <... mount resumed>) = 0 [pid 2225] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2224] <... futex resumed>) = 0 [pid 2224] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2224] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2225] umount2("./file0", MNT_DETACH [pid 2224] <... futex resumed>) = 0 [pid 2224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2224] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2224] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2226], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2226 [pid 2224] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2224] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2226 attached [pid 2226] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2226] umount2("./file0", MNT_DETACH) = 0 [pid 2226] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2224] <... futex resumed>) = 0 [pid 2226] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2225] <... umount2 resumed>) = 0 [pid 2225] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2225] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2224] exit_group(0) = ? [pid 2226] <... futex resumed>) = ? [pid 2225] <... futex resumed>) = ? [pid 2226] +++ exited with 0 +++ [pid 2225] +++ exited with 0 +++ [pid 2224] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2224, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2227 attached , child_tidptr=0x5555564465d0) = 2227 [pid 2227] set_robust_list(0x5555564465e0, 24) = 0 [pid 2227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2227] setpgid(0, 0) = 0 [pid 2227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2227] write(3, "1000", 4) = 4 [pid 2227] close(3) = 0 [pid 2227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2227] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2227] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2227] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2228], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2228 [pid 2227] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2227] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2228 attached [pid 2228] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2228] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2228] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2227] <... futex resumed>) = 0 [pid 2227] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2227] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2228] <... futex resumed>) = 1 [pid 2228] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2228] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2227] <... futex resumed>) = 0 [pid 2227] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2227] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2228] <... futex resumed>) = 1 [pid 2228] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2228] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2227] <... futex resumed>) = 0 [pid 2228] umount2("./file0", MNT_DETACH [pid 2227] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2228] <... umount2 resumed>) = 0 [pid 2227] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2227] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2227] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2227] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2228] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2227] <... clone resumed>, parent_tid=[2229], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2229 [pid 2227] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2227] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2229 attached [pid 2229] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2229] umount2("./file0", MNT_DETACH [pid 2228] <... futex resumed>) = 0 [pid 2229] <... umount2 resumed>) = 0 [pid 2229] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2227] <... futex resumed>) = 0 [pid 2227] exit_group(0) = ? [pid 2229] <... futex resumed>) = ? [pid 2229] +++ exited with 0 +++ [pid 2228] +++ exited with 0 +++ [pid 2227] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2227, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2230 ./strace-static-x86_64: Process 2230 attached [pid 2230] set_robust_list(0x5555564465e0, 24) = 0 [pid 2230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2230] setpgid(0, 0) = 0 [pid 2230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2230] write(3, "1000", 4) = 4 [pid 2230] close(3) = 0 [pid 2230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2230] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2230] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2231 attached , parent_tid=[2231], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2231 [pid 2231] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2231] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2230] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2231] <... futex resumed>) = 0 [pid 2231] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2230] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2231] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2231] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2230] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2230] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2231] <... futex resumed>) = 0 [pid 2231] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2230] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2231] <... mount resumed>) = 0 [pid 2231] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2231] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2230] <... futex resumed>) = 0 [pid 2230] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2231] <... futex resumed>) = 0 [pid 2231] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2230] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2231] <... mount resumed>) = 0 [pid 2231] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2230] <... futex resumed>) = 0 [pid 2230] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2230] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2230] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2230] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2231] umount2("./file0", MNT_DETACH [pid 2230] <... clone resumed>, parent_tid=[2232], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2232 [pid 2230] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2230] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2232 attached [pid 2232] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2232] umount2("./file0", MNT_DETACH) = 0 [pid 2232] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2230] <... futex resumed>) = 0 [pid 2232] <... futex resumed>) = 1 [pid 2232] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2231] <... umount2 resumed>) = 0 [pid 2231] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2231] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2230] exit_group(0) = ? [pid 2232] <... futex resumed>) = ? [pid 2231] <... futex resumed>) = ? [pid 2232] +++ exited with 0 +++ [pid 2231] +++ exited with 0 +++ [pid 2230] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2230, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2233 ./strace-static-x86_64: Process 2233 attached [pid 2233] set_robust_list(0x5555564465e0, 24) = 0 [pid 2233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2233] setpgid(0, 0) = 0 [pid 2233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2233] write(3, "1000", 4) = 4 [pid 2233] close(3) = 0 [pid 2233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2233] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2233] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2233] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2234], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2234 [pid 2233] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2233] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2234 attached [pid 2234] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2234] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2234] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2233] <... futex resumed>) = 0 [pid 2233] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2233] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2234] <... futex resumed>) = 1 [pid 2234] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2234] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2233] <... futex resumed>) = 0 [pid 2234] <... futex resumed>) = 1 [pid 2233] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2234] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2233] <... futex resumed>) = 0 [pid 2233] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2234] <... mount resumed>) = 0 [pid 2234] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2233] <... futex resumed>) = 0 [pid 2234] <... futex resumed>) = 1 [pid 2233] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2234] umount2("./file0", MNT_DETACH [pid 2233] <... futex resumed>) = 0 [pid 2233] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2233] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2233] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2234] <... umount2 resumed>) = 0 [pid 2233] <... mprotect resumed>) = 0 [pid 2234] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2233] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2234] <... futex resumed>) = 0 [pid 2234] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2235 attached [pid 2235] set_robust_list(0x7fc84e07e9e0, 24 [pid 2233] <... clone resumed>, parent_tid=[2235], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2235 [pid 2233] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2235] <... set_robust_list resumed>) = 0 [pid 2233] <... futex resumed>) = 0 [pid 2235] umount2("./file0", MNT_DETACH [pid 2233] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2235] <... umount2 resumed>) = 0 [pid 2235] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2233] <... futex resumed>) = 0 [pid 2235] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2233] exit_group(0) = ? [pid 2234] <... futex resumed>) = ? [pid 2234] +++ exited with 0 +++ [pid 2235] <... futex resumed>) = ? [pid 2235] +++ exited with 0 +++ [pid 2233] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2233, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2236 attached , child_tidptr=0x5555564465d0) = 2236 [pid 2236] set_robust_list(0x5555564465e0, 24) = 0 [pid 2236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2236] setpgid(0, 0) = 0 [pid 2236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2236] write(3, "1000", 4) = 4 [pid 2236] close(3) = 0 [pid 2236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2236] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2236] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2237 attached , parent_tid=[2237], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2237 [pid 2236] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2237] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2237] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2237] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2236] <... futex resumed>) = 0 [pid 2237] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2236] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2237] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2237] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2237] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2236] <... futex resumed>) = 0 [pid 2236] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2237] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2237] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2236] <... futex resumed>) = 0 [pid 2236] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2237] umount2("./file0", MNT_DETACH [pid 2236] <... mmap resumed>) = 0x7fc84e05e000 [pid 2236] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2237] <... umount2 resumed>) = 0 [pid 2237] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2236] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2237] <... futex resumed>) = 0 [pid 2237] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2236] <... clone resumed>, parent_tid=[2238], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2238 [pid 2236] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2236] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2238 attached [pid 2238] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2238] umount2("./file0", MNT_DETACH) = 0 [pid 2238] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2236] <... futex resumed>) = 0 [pid 2238] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2236] exit_group(0) = ? [pid 2237] <... futex resumed>) = ? [pid 2237] +++ exited with 0 +++ [pid 2238] <... futex resumed>) = ? [pid 2238] +++ exited with 0 +++ [pid 2236] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2236, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2239 attached , child_tidptr=0x5555564465d0) = 2239 [pid 2239] set_robust_list(0x5555564465e0, 24) = 0 [pid 2239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2239] setpgid(0, 0) = 0 [pid 2239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2239] write(3, "1000", 4) = 4 [pid 2239] close(3) = 0 [pid 2239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2239] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2239] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2239] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2240 attached , parent_tid=[2240], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2240 [pid 2240] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2240] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2239] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2240] <... futex resumed>) = 0 [pid 2240] mkdir("./file0", 000 [pid 2239] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2240] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2240] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2240] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2239] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2240] <... futex resumed>) = 0 [pid 2240] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2239] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2240] <... mount resumed>) = 0 [pid 2240] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2239] <... futex resumed>) = 0 [pid 2240] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2239] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2239] <... futex resumed>) = 0 [pid 2240] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2239] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2240] <... mount resumed>) = 0 [pid 2240] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2239] <... futex resumed>) = 0 [pid 2240] umount2("./file0", MNT_DETACH [pid 2239] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2239] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2240] <... umount2 resumed>) = 0 [pid 2239] <... futex resumed>) = 0 [pid 2240] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2239] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2240] <... futex resumed>) = 0 [pid 2239] <... mmap resumed>) = 0x7fc84e05e000 [pid 2240] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2239] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2239] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2241 attached [pid 2241] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2241] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2239] <... clone resumed>, parent_tid=[2241], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2241 [pid 2239] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2241] <... futex resumed>) = 0 [pid 2239] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2241] umount2("./file0", MNT_DETACH) = 0 [pid 2241] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2239] <... futex resumed>) = 0 [pid 2241] <... futex resumed>) = 1 [pid 2239] exit_group(0) = ? [pid 2240] <... futex resumed>) = ? [pid 2241] +++ exited with 0 +++ [pid 2240] +++ exited with 0 +++ [pid 2239] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2239, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2242 attached , child_tidptr=0x5555564465d0) = 2242 [pid 2242] set_robust_list(0x5555564465e0, 24) = 0 [pid 2242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2242] setpgid(0, 0) = 0 [pid 2242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2242] write(3, "1000", 4) = 4 [pid 2242] close(3) = 0 [pid 2242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2242] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2242] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2243 attached , parent_tid=[2243], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2243 [pid 2242] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2243] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2243] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2243] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2242] <... futex resumed>) = 0 [pid 2242] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2243] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2243] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2242] <... futex resumed>) = 0 [pid 2242] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2243] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2243] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2242] <... futex resumed>) = 0 [pid 2242] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2242] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2242] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2244], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2244 ./strace-static-x86_64: Process 2244 attached [pid 2242] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2242] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2243] umount2("./file0", MNT_DETACH [pid 2244] set_robust_list(0x7fc84e07e9e0, 24 [pid 2243] <... umount2 resumed>) = 0 [pid 2244] <... set_robust_list resumed>) = 0 [pid 2244] umount2("./file0", MNT_DETACH [pid 2243] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2244] <... umount2 resumed>) = 0 [pid 2243] <... futex resumed>) = 0 [pid 2244] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2242] <... futex resumed>) = 0 [pid 2242] exit_group(0) = ? [pid 2244] +++ exited with 0 +++ [pid 2243] +++ exited with 0 +++ [pid 2242] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2242, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2245 attached , child_tidptr=0x5555564465d0) = 2245 [pid 2245] set_robust_list(0x5555564465e0, 24) = 0 [pid 2245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2245] setpgid(0, 0) = 0 [pid 2245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2245] write(3, "1000", 4) = 4 [pid 2245] close(3) = 0 [pid 2245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2245] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2245] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2246 attached , parent_tid=[2246], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2246 [pid 2245] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2245] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2246] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2246] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2245] <... futex resumed>) = 0 [pid 2245] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2245] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2246] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2245] <... futex resumed>) = 0 [pid 2246] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2245] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2246] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2245] <... futex resumed>) = 0 [pid 2246] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2245] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2246] <... mount resumed>) = 0 [pid 2246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2245] <... futex resumed>) = 0 [pid 2245] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2245] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2245] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2245] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2246] umount2("./file0", MNT_DETACH [pid 2245] <... clone resumed>, parent_tid=[2247], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2247 [pid 2245] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2245] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2247 attached [pid 2247] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2247] umount2("./file0", MNT_DETACH [pid 2246] <... umount2 resumed>) = 0 [pid 2246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2247] <... umount2 resumed>) = 0 [pid 2246] <... futex resumed>) = 0 [pid 2247] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2246] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2245] <... futex resumed>) = 0 [pid 2247] <... futex resumed>) = 1 [pid 2245] exit_group(0 [pid 2247] ????( [pid 2245] <... exit_group resumed>) = ? [pid 2247] <... ???? resumed>) = ? [pid 2247] +++ exited with 0 +++ [pid 2246] <... futex resumed>) = ? [pid 2246] +++ exited with 0 +++ [pid 2245] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2245, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2248 ./strace-static-x86_64: Process 2248 attached [pid 2248] set_robust_list(0x5555564465e0, 24) = 0 [pid 2248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2248] setpgid(0, 0) = 0 [pid 2248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2248] write(3, "1000", 4) = 4 [pid 2248] close(3) = 0 [pid 2248] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2248] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2248] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2249], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2249 [pid 2248] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2248] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2249 attached [pid 2249] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2249] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2249] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2248] <... futex resumed>) = 0 [pid 2248] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2249] <... futex resumed>) = 0 [pid 2249] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2248] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2249] <... mount resumed>) = 0 [pid 2249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2249] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2248] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2248] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2249] <... futex resumed>) = 0 [pid 2248] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2249] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2248] <... futex resumed>) = 0 [pid 2248] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2248] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2248] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2248] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2250], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2250 [pid 2248] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2248] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2250 attached [pid 2249] umount2("./file0", MNT_DETACH [pid 2250] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2250] umount2("./file0", MNT_DETACH) = 0 [pid 2250] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2248] <... futex resumed>) = 0 [pid 2250] <... futex resumed>) = 1 [pid 2250] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2249] <... umount2 resumed>) = 0 [pid 2249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2249] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2248] exit_group(0) = ? [pid 2249] <... futex resumed>) = ? [pid 2249] +++ exited with 0 +++ [pid 2250] <... futex resumed>) = ? [pid 2250] +++ exited with 0 +++ [pid 2248] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2248, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2251 ./strace-static-x86_64: Process 2251 attached [pid 2251] set_robust_list(0x5555564465e0, 24) = 0 [pid 2251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2251] setpgid(0, 0) = 0 [pid 2251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2251] write(3, "1000", 4) = 4 [pid 2251] close(3) = 0 [pid 2251] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2251] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2251] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2251] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2252 attached , parent_tid=[2252], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2252 [pid 2251] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2251] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2252] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2252] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2251] <... futex resumed>) = 0 [pid 2252] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2251] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2251] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2252] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2252] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2251] <... futex resumed>) = 0 [pid 2251] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2251] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2252] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2251] <... futex resumed>) = 0 [pid 2251] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2251] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2251] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2252] umount2("./file0", MNT_DETACH [pid 2251] <... mmap resumed>) = 0x7fc84e05e000 [pid 2251] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2251] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2253], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2253 ./strace-static-x86_64: Process 2253 attached [pid 2251] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2252] <... umount2 resumed>) = 0 [pid 2251] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2253] set_robust_list(0x7fc84e07e9e0, 24 [pid 2252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2253] <... set_robust_list resumed>) = 0 [pid 2252] <... futex resumed>) = 0 [pid 2253] umount2("./file0", MNT_DETACH [pid 2252] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2253] <... umount2 resumed>) = 0 [pid 2253] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2251] <... futex resumed>) = 0 [pid 2251] exit_group(0) = ? [pid 2252] <... futex resumed>) = ? [pid 2252] +++ exited with 0 +++ [pid 2253] +++ exited with 0 +++ [pid 2251] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2251, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2254 ./strace-static-x86_64: Process 2254 attached [pid 2254] set_robust_list(0x5555564465e0, 24) = 0 [pid 2254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2254] setpgid(0, 0) = 0 [pid 2254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2254] write(3, "1000", 4) = 4 [pid 2254] close(3) = 0 [pid 2254] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2254] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2254] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2255 attached , parent_tid=[2255], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2255 [pid 2254] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2254] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2255] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2255] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2254] <... futex resumed>) = 0 [pid 2254] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2254] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2255] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2254] <... futex resumed>) = 0 [pid 2254] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2255] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2254] <... futex resumed>) = 0 [pid 2254] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2255] <... mount resumed>) = 0 [pid 2255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2254] <... futex resumed>) = 0 [pid 2255] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2254] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2254] <... futex resumed>) = 0 [pid 2254] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2254] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2254] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2255] umount2("./file0", MNT_DETACH [pid 2254] <... clone resumed>, parent_tid=[2256], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2256 [pid 2254] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2254] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2255] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2256 attached [pid 2256] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2256] umount2("./file0", MNT_DETACH [pid 2255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2256] <... umount2 resumed>) = 0 [pid 2256] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2254] <... futex resumed>) = 0 [pid 2254] exit_group(0) = ? [pid 2256] <... futex resumed>) = ? [pid 2256] +++ exited with 0 +++ [pid 2255] <... futex resumed>) = ? [pid 2255] +++ exited with 0 +++ [pid 2254] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2254, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2257 attached , child_tidptr=0x5555564465d0) = 2257 [pid 2257] set_robust_list(0x5555564465e0, 24) = 0 [pid 2257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2257] setpgid(0, 0) = 0 [pid 2257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2257] write(3, "1000", 4) = 4 [pid 2257] close(3) = 0 [pid 2257] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2257] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2257] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2258 attached , parent_tid=[2258], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2258 [pid 2257] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2258] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2258] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2257] <... futex resumed>) = 0 [pid 2257] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2258] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2257] <... futex resumed>) = 0 [pid 2257] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2258] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2257] <... futex resumed>) = 0 [pid 2257] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2257] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2257] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2259], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2259 [pid 2258] umount2("./file0", MNT_DETACH [pid 2257] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2257] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2259 attached [pid 2259] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2259] umount2("./file0", MNT_DETACH) = 0 [pid 2258] <... umount2 resumed>) = 0 [pid 2259] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2257] <... futex resumed>) = 0 [pid 2259] <... futex resumed>) = 1 [pid 2258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2259] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2258] <... futex resumed>) = 0 [pid 2258] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2257] exit_group(0) = ? [pid 2259] <... futex resumed>) = ? [pid 2258] <... futex resumed>) = ? [pid 2259] +++ exited with 0 +++ [pid 2258] +++ exited with 0 +++ [pid 2257] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2257, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2260 attached , child_tidptr=0x5555564465d0) = 2260 [pid 2260] set_robust_list(0x5555564465e0, 24) = 0 [pid 2260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2260] setpgid(0, 0) = 0 [pid 2260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2260] write(3, "1000", 4) = 4 [pid 2260] close(3) = 0 [pid 2260] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2260] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2260] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2261 attached , parent_tid=[2261], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2261 [pid 2261] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2261] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2261] <... futex resumed>) = 0 [pid 2261] mkdir("./file0", 000 [pid 2260] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2261] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2261] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2260] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2261] <... futex resumed>) = 0 [pid 2261] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2260] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2261] <... mount resumed>) = 0 [pid 2261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2261] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2260] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2261] <... futex resumed>) = 0 [pid 2261] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2260] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2261] <... futex resumed>) = 0 [pid 2261] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2261] <... futex resumed>) = 0 [pid 2261] umount2("./file0", MNT_DETACH [pid 2260] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2261] <... umount2 resumed>) = 0 [pid 2261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2261] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] <... futex resumed>) = 0 [pid 2260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2260] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2260] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2262 attached , parent_tid=[2262], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2262 [pid 2262] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2262] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2262] <... futex resumed>) = 0 [pid 2262] umount2("./file0", MNT_DETACH [pid 2260] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2262] <... umount2 resumed>) = 0 [pid 2262] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2262] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2260] <... futex resumed>) = 0 [pid 2260] exit_group(0 [pid 2261] <... futex resumed>) = ? [pid 2260] <... exit_group resumed>) = ? [pid 2261] +++ exited with 0 +++ [pid 2262] <... futex resumed>) = ? [pid 2262] +++ exited with 0 +++ [pid 2260] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2260, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2263 ./strace-static-x86_64: Process 2263 attached [pid 2263] set_robust_list(0x5555564465e0, 24) = 0 [pid 2263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2263] setpgid(0, 0) = 0 [pid 2263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2263] write(3, "1000", 4) = 4 [pid 2263] close(3) = 0 [pid 2263] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2263] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2263] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2263] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2264 attached [pid 2264] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2264] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] <... clone resumed>, parent_tid=[2264], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2264 [pid 2263] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2264] <... futex resumed>) = 0 [pid 2264] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2264] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2263] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2264] <... futex resumed>) = 0 [pid 2264] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2263] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2264] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2263] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2264] <... futex resumed>) = 0 [pid 2264] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2263] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2264] <... mount resumed>) = 0 [pid 2264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2264] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] <... futex resumed>) = 0 [pid 2263] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2264] <... futex resumed>) = 0 [pid 2264] umount2("./file0", MNT_DETACH [pid 2263] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2264] <... umount2 resumed>) = 0 [pid 2264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2264] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] <... futex resumed>) = 0 [pid 2263] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2263] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2263] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2265 attached [pid 2265] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2263] <... clone resumed>, parent_tid=[2265], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2265 [pid 2265] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2265] <... futex resumed>) = 0 [pid 2265] umount2("./file0", MNT_DETACH) = 0 [pid 2263] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2265] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2265] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2263] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2263] exit_group(0 [pid 2264] <... futex resumed>) = ? [pid 2263] <... exit_group resumed>) = ? [pid 2264] +++ exited with 0 +++ [pid 2265] <... futex resumed>) = ? [pid 2265] +++ exited with 0 +++ [pid 2263] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2263, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2266 ./strace-static-x86_64: Process 2266 attached [pid 2266] set_robust_list(0x5555564465e0, 24) = 0 [pid 2266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2266] setpgid(0, 0) = 0 [pid 2266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2266] write(3, "1000", 4) = 4 [pid 2266] close(3) = 0 [pid 2266] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2266] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2266] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2267 attached , parent_tid=[2267], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2267 [pid 2266] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2267] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2267] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2266] <... futex resumed>) = 0 [pid 2266] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2267] <... futex resumed>) = 1 [pid 2267] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2266] <... futex resumed>) = 0 [pid 2266] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2267] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2266] <... futex resumed>) = 0 [pid 2266] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2266] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2266] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2267] umount2("./file0", MNT_DETACH [pid 2266] <... clone resumed>, parent_tid=[2268], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2268 [pid 2266] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2266] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2268 attached [pid 2268] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2268] umount2("./file0", MNT_DETACH) = 0 [pid 2268] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2266] <... futex resumed>) = 0 [pid 2268] <... futex resumed>) = 1 [pid 2267] <... umount2 resumed>) = 0 [pid 2268] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2267] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2266] exit_group(0) = ? [pid 2268] <... futex resumed>) = 231 [pid 2268] +++ exited with 0 +++ [pid 2267] <... futex resumed>) = ? [pid 2267] +++ exited with 0 +++ [pid 2266] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2266, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2269 ./strace-static-x86_64: Process 2269 attached [pid 2269] set_robust_list(0x5555564465e0, 24) = 0 [pid 2269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2269] setpgid(0, 0) = 0 [pid 2269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2269] write(3, "1000", 4) = 4 [pid 2269] close(3) = 0 [pid 2269] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2269] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2269] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2269] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2270], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2270 [pid 2269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2269] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2270 attached [pid 2270] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2270] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2269] <... futex resumed>) = 0 [pid 2270] <... futex resumed>) = 1 [pid 2269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2270] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2269] <... futex resumed>) = 0 [pid 2269] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2270] <... mount resumed>) = 0 [pid 2270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2269] <... futex resumed>) = 0 [pid 2270] <... futex resumed>) = 1 [pid 2269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2270] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2269] <... futex resumed>) = 0 [pid 2269] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2270] <... mount resumed>) = 0 [pid 2270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2269] <... futex resumed>) = 0 [pid 2269] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2270] umount2("./file0", MNT_DETACH [pid 2269] <... futex resumed>) = 0 [pid 2269] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2269] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2269] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2270] <... umount2 resumed>) = 0 [pid 2269] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2271 attached ) = 0 [pid 2271] set_robust_list(0x7fc84e07e9e0, 24 [pid 2270] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2271] <... set_robust_list resumed>) = 0 [pid 2271] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2269] <... clone resumed>, parent_tid=[2271], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2271 [pid 2269] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2269] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2271] umount2("./file0", MNT_DETACH) = 0 [pid 2271] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2269] <... futex resumed>) = 0 [pid 2271] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2269] exit_group(0 [pid 2270] <... futex resumed>) = ? [pid 2269] <... exit_group resumed>) = ? [pid 2270] +++ exited with 0 +++ [pid 2271] <... futex resumed>) = ? [pid 2271] +++ exited with 0 +++ [pid 2269] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2269, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2272 ./strace-static-x86_64: Process 2272 attached [pid 2272] set_robust_list(0x5555564465e0, 24) = 0 [pid 2272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2272] setpgid(0, 0) = 0 [pid 2272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2272] write(3, "1000", 4) = 4 [pid 2272] close(3) = 0 [pid 2272] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2272] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2272] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2273 attached , parent_tid=[2273], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2273 [pid 2272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2273] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2273] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2272] <... futex resumed>) = 0 [pid 2272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2273] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2272] <... futex resumed>) = 0 [pid 2272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2273] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2272] <... futex resumed>) = 0 [pid 2272] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2272] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2273] umount2("./file0", MNT_DETACH [pid 2272] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2273] <... umount2 resumed>) = 0 [pid 2272] <... clone resumed>, parent_tid=[2274], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2274 [pid 2272] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2272] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2274 attached [pid 2274] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2274] umount2("./file0", MNT_DETACH [pid 2273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2273] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2274] <... umount2 resumed>) = 0 [pid 2274] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2272] <... futex resumed>) = 0 [pid 2272] exit_group(0) = ? [pid 2273] <... futex resumed>) = ? [pid 2273] +++ exited with 0 +++ [pid 2274] <... futex resumed>) = ? [pid 2274] +++ exited with 0 +++ [pid 2272] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2272, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2275 attached , child_tidptr=0x5555564465d0) = 2275 [pid 2275] set_robust_list(0x5555564465e0, 24) = 0 [pid 2275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2275] setpgid(0, 0) = 0 [pid 2275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2275] write(3, "1000", 4) = 4 [pid 2275] close(3) = 0 [pid 2275] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2275] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2275] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2275] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2276], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2276 [pid 2275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2275] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2276 attached [pid 2276] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2276] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2275] <... futex resumed>) = 0 [pid 2275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2275] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2276] <... futex resumed>) = 1 [pid 2276] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2275] <... futex resumed>) = 0 [pid 2275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2275] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2276] <... futex resumed>) = 1 [pid 2276] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2275] <... futex resumed>) = 0 [pid 2275] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2276] umount2("./file0", MNT_DETACH [pid 2275] <... futex resumed>) = 0 [pid 2275] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2275] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2275] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2276] <... umount2 resumed>) = 0 [pid 2275] <... mprotect resumed>) = 0 [pid 2276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2275] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2277], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2277 [pid 2276] <... futex resumed>) = 0 [pid 2275] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2276] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2277 attached [pid 2275] <... futex resumed>) = 0 [pid 2277] set_robust_list(0x7fc84e07e9e0, 24 [pid 2275] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2277] <... set_robust_list resumed>) = 0 [pid 2277] umount2("./file0", MNT_DETACH) = 0 [pid 2277] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2275] <... futex resumed>) = 0 [pid 2275] exit_group(0) = ? [pid 2276] <... futex resumed>) = ? [pid 2277] <... futex resumed>) = ? [pid 2277] +++ exited with 0 +++ [pid 2276] +++ exited with 0 +++ [pid 2275] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2275, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2278 ./strace-static-x86_64: Process 2278 attached [pid 2278] set_robust_list(0x5555564465e0, 24) = 0 [pid 2278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2278] setpgid(0, 0) = 0 [pid 2278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2278] write(3, "1000", 4) = 4 [pid 2278] close(3) = 0 [pid 2278] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2278] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2278] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2279 attached , parent_tid=[2279], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2279 [pid 2279] set_robust_list(0x7fc84e09f9e0, 24 [pid 2278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2279] <... set_robust_list resumed>) = 0 [pid 2278] <... futex resumed>) = 0 [pid 2279] mkdir("./file0", 000 [pid 2278] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2279] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2278] <... futex resumed>) = 0 [pid 2278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2278] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2279] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2278] <... futex resumed>) = 0 [pid 2278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2278] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2279] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2278] <... futex resumed>) = 0 [pid 2278] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2278] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2278] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2278] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2280], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2280 [pid 2278] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2278] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2280 attached [pid 2279] umount2("./file0", MNT_DETACH [pid 2280] set_robust_list(0x7fc84e07e9e0, 24 [pid 2279] <... umount2 resumed>) = 0 [pid 2280] <... set_robust_list resumed>) = 0 [pid 2279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2280] umount2("./file0", MNT_DETACH [pid 2279] <... futex resumed>) = 0 [pid 2280] <... umount2 resumed>) = 0 [pid 2279] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2280] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2278] <... futex resumed>) = 0 [pid 2280] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2278] exit_group(0 [pid 2279] <... futex resumed>) = ? [pid 2278] <... exit_group resumed>) = ? [pid 2280] <... futex resumed>) = ? [pid 2279] +++ exited with 0 +++ [pid 2280] +++ exited with 0 +++ [pid 2278] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2278, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2281 attached , child_tidptr=0x5555564465d0) = 2281 [pid 2281] set_robust_list(0x5555564465e0, 24) = 0 [pid 2281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2281] setpgid(0, 0) = 0 [pid 2281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2281] write(3, "1000", 4) = 4 [pid 2281] close(3) = 0 [pid 2281] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2281] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2281] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2281] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2282], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2282 [pid 2281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2281] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2282 attached [pid 2282] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2282] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2281] <... futex resumed>) = 0 [pid 2281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2281] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2282] <... futex resumed>) = 1 [pid 2282] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2281] <... futex resumed>) = 0 [pid 2282] <... futex resumed>) = 1 [pid 2281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2282] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2281] <... futex resumed>) = 0 [pid 2281] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2282] <... mount resumed>) = 0 [pid 2282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2281] <... futex resumed>) = 0 [pid 2282] umount2("./file0", MNT_DETACH [pid 2281] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2281] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2281] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2281] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2281] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2282] <... umount2 resumed>) = 0 [pid 2281] <... clone resumed>, parent_tid=[2283], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2283 [pid 2281] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2281] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2283 attached [pid 2282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2283] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2283] umount2("./file0", MNT_DETACH [pid 2282] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2283] <... umount2 resumed>) = 0 [pid 2283] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2281] <... futex resumed>) = 0 [pid 2281] exit_group(0) = ? [pid 2282] <... futex resumed>) = ? [pid 2283] <... futex resumed>) = ? [pid 2283] +++ exited with 0 +++ [pid 2282] +++ exited with 0 +++ [pid 2281] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2281, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2284 attached , child_tidptr=0x5555564465d0) = 2284 [pid 2284] set_robust_list(0x5555564465e0, 24) = 0 [pid 2284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2284] setpgid(0, 0) = 0 [pid 2284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2284] write(3, "1000", 4) = 4 [pid 2284] close(3) = 0 [pid 2284] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2284] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2284] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2285 attached , parent_tid=[2285], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2285 [pid 2284] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2284] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2285] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2285] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2284] <... futex resumed>) = 0 [pid 2284] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2284] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2285] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2284] <... futex resumed>) = 0 [pid 2285] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2284] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2285] <... futex resumed>) = 0 [pid 2285] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2284] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2285] <... mount resumed>) = 0 [pid 2285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2284] <... futex resumed>) = 0 [pid 2285] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2284] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2284] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2284] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2284] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2286], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2286 [pid 2284] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2285] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2284] <... futex resumed>) = 0 [pid 2284] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2286 attached [pid 2286] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2286] umount2("./file0", MNT_DETACH [pid 2285] umount2("./file0", MNT_DETACH) = 0 [pid 2285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2286] <... umount2 resumed>) = 0 [pid 2286] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2284] <... futex resumed>) = 0 [pid 2284] exit_group(0 [pid 2285] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2284] <... exit_group resumed>) = ? [pid 2285] <... futex resumed>) = ? [pid 2286] <... futex resumed>) = ? [pid 2286] +++ exited with 0 +++ [pid 2285] +++ exited with 0 +++ [pid 2284] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2284, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2287 ./strace-static-x86_64: Process 2287 attached [pid 2287] set_robust_list(0x5555564465e0, 24) = 0 [pid 2287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2287] setpgid(0, 0) = 0 [pid 2287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2287] write(3, "1000", 4) = 4 [pid 2287] close(3) = 0 [pid 2287] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2287] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2287] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2288], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2288 [pid 2287] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2287] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2288 attached [pid 2288] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2288] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2287] <... futex resumed>) = 0 [pid 2287] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2287] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2288] <... futex resumed>) = 1 [pid 2288] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2287] <... futex resumed>) = 0 [pid 2288] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2287] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2287] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2288] <... mount resumed>) = 0 [pid 2288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2287] <... futex resumed>) = 0 [pid 2287] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2287] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2287] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2287] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2288] umount2("./file0", MNT_DETACH [pid 2287] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2289 attached [pid 2289] set_robust_list(0x7fc84e07e9e0, 24 [pid 2287] <... clone resumed>, parent_tid=[2289], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2289 [pid 2289] <... set_robust_list resumed>) = 0 [pid 2287] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2289] umount2("./file0", MNT_DETACH [pid 2287] <... futex resumed>) = 0 [pid 2287] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2288] <... umount2 resumed>) = 0 [pid 2289] <... umount2 resumed>) = 0 [pid 2289] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2287] <... futex resumed>) = 0 [pid 2289] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2288] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2287] exit_group(0) = ? [pid 2289] <... futex resumed>) = ? [pid 2288] <... futex resumed>) = ? [pid 2289] +++ exited with 0 +++ [pid 2288] +++ exited with 0 +++ [pid 2287] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2287, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2290 ./strace-static-x86_64: Process 2290 attached [pid 2290] set_robust_list(0x5555564465e0, 24) = 0 [pid 2290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2290] setpgid(0, 0) = 0 [pid 2290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2290] write(3, "1000", 4) = 4 [pid 2290] close(3) = 0 [pid 2290] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2290] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2290] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2291 attached [pid 2291] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2291] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2290] <... clone resumed>, parent_tid=[2291], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2291 [pid 2290] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2291] <... futex resumed>) = 0 [pid 2290] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2291] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2290] <... futex resumed>) = 0 [pid 2290] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2290] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2291] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2290] <... futex resumed>) = 0 [pid 2291] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2290] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2290] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2291] <... mount resumed>) = 0 [pid 2291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2290] <... futex resumed>) = 0 [pid 2291] umount2("./file0", MNT_DETACH [pid 2290] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2290] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2291] <... umount2 resumed>) = 0 [pid 2291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2291] <... futex resumed>) = 0 [pid 2290] <... mmap resumed>) = 0x7fc84e05e000 [pid 2291] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2290] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2290] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2292 attached , parent_tid=[2292], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2292 [pid 2290] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2290] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2292] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2292] umount2("./file0", MNT_DETACH) = 0 [pid 2292] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2290] <... futex resumed>) = 0 [pid 2290] exit_group(0) = ? [pid 2291] <... futex resumed>) = ? [pid 2291] +++ exited with 0 +++ [pid 2292] +++ exited with 0 +++ [pid 2290] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2290, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2293 attached , child_tidptr=0x5555564465d0) = 2293 [pid 2293] set_robust_list(0x5555564465e0, 24) = 0 [pid 2293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2293] setpgid(0, 0) = 0 [pid 2293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2293] write(3, "1000", 4) = 4 [pid 2293] close(3) = 0 [pid 2293] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2293] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2293] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2294], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2294 [pid 2293] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2293] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2294 attached [pid 2294] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2294] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2293] <... futex resumed>) = 0 [pid 2293] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2293] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2294] <... futex resumed>) = 1 [pid 2294] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2293] <... futex resumed>) = 0 [pid 2293] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2293] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2294] <... futex resumed>) = 1 [pid 2294] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2293] <... futex resumed>) = 0 [pid 2294] umount2("./file0", MNT_DETACH [pid 2293] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2294] <... umount2 resumed>) = 0 [pid 2293] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2294] <... futex resumed>) = 0 [pid 2293] <... mmap resumed>) = 0x7fc84e05e000 [pid 2294] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2293] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2293] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2295 attached [pid 2295] set_robust_list(0x7fc84e07e9e0, 24 [pid 2293] <... clone resumed>, parent_tid=[2295], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2295 [pid 2295] <... set_robust_list resumed>) = 0 [pid 2293] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2295] umount2("./file0", MNT_DETACH [pid 2293] <... futex resumed>) = 0 [pid 2293] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2295] <... umount2 resumed>) = 0 [pid 2295] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2295] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2293] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2293] exit_group(0) = ? [pid 2294] <... futex resumed>) = ? [pid 2295] <... futex resumed>) = ? [pid 2295] +++ exited with 0 +++ [pid 2294] +++ exited with 0 +++ [pid 2293] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2293, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2296 ./strace-static-x86_64: Process 2296 attached [pid 2296] set_robust_list(0x5555564465e0, 24) = 0 [pid 2296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2296] setpgid(0, 0) = 0 [pid 2296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2296] write(3, "1000", 4) = 4 [pid 2296] close(3) = 0 [pid 2296] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2296] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2296] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2297], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2297 [pid 2296] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2296] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2297 attached [pid 2297] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2297] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2296] <... futex resumed>) = 0 [pid 2296] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2296] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2297] <... futex resumed>) = 1 [pid 2297] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2296] <... futex resumed>) = 0 [pid 2297] <... futex resumed>) = 1 [pid 2296] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2297] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2296] <... futex resumed>) = 0 [pid 2296] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2297] <... mount resumed>) = 0 [pid 2297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2296] <... futex resumed>) = 0 [pid 2296] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2296] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2296] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2297] umount2("./file0", MNT_DETACH [pid 2296] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2298], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2298 [pid 2296] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2296] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2298 attached [pid 2298] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2298] umount2("./file0", MNT_DETACH [pid 2297] <... umount2 resumed>) = 0 [pid 2298] <... umount2 resumed>) = 0 [pid 2298] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2296] <... futex resumed>) = 0 [pid 2297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2298] <... futex resumed>) = 1 [pid 2298] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2297] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2296] exit_group(0) = ? [pid 2298] <... futex resumed>) = ? [pid 2298] +++ exited with 0 +++ [pid 2297] <... futex resumed>) = ? [pid 2297] +++ exited with 0 +++ [pid 2296] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2296, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2299 attached , child_tidptr=0x5555564465d0) = 2299 [pid 2299] set_robust_list(0x5555564465e0, 24) = 0 [pid 2299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2299] setpgid(0, 0) = 0 [pid 2299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2299] write(3, "1000", 4) = 4 [pid 2299] close(3) = 0 [pid 2299] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2299] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2299] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2299] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2300 attached [pid 2300] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2300] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2299] <... clone resumed>, parent_tid=[2300], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2300 [pid 2299] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2300] <... futex resumed>) = 0 [pid 2300] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2300] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2299] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2299] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2300] <... futex resumed>) = 0 [pid 2300] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2300] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2299] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2299] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2300] <... futex resumed>) = 0 [pid 2300] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2299] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2300] <... mount resumed>) = 0 [pid 2300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2300] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2299] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2299] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2299] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2300] <... futex resumed>) = 0 [pid 2300] umount2("./file0", MNT_DETACH [pid 2299] <... mmap resumed>) = 0x7fc84e05e000 [pid 2299] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2299] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2301], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2301 [pid 2299] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2300] <... umount2 resumed>) = 0 [pid 2299] <... futex resumed>) = 0 [pid 2300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2299] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2300] <... futex resumed>) = 0 [pid 2300] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2301 attached [pid 2301] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2301] umount2("./file0", MNT_DETACH) = 0 [pid 2301] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2299] <... futex resumed>) = 0 [pid 2301] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2299] exit_group(0) = ? [pid 2300] <... futex resumed>) = ? [pid 2300] +++ exited with 0 +++ [pid 2301] <... futex resumed>) = ? [pid 2301] +++ exited with 0 +++ [pid 2299] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2299, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2302 ./strace-static-x86_64: Process 2302 attached [pid 2302] set_robust_list(0x5555564465e0, 24) = 0 [pid 2302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2302] setpgid(0, 0) = 0 [pid 2302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2302] write(3, "1000", 4) = 4 [pid 2302] close(3) = 0 [pid 2302] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2302] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2302] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2303 attached , parent_tid=[2303], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2303 [pid 2303] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2303] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2303] <... futex resumed>) = 0 [pid 2303] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2303] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2302] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2303] <... futex resumed>) = 0 [pid 2303] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2302] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2303] <... mount resumed>) = 0 [pid 2303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2303] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] <... futex resumed>) = 0 [pid 2302] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2303] <... futex resumed>) = 0 [pid 2302] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2303] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2303] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] <... futex resumed>) = 0 [pid 2302] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2303] <... futex resumed>) = 0 [pid 2303] umount2("./file0", MNT_DETACH [pid 2302] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2303] <... umount2 resumed>) = 0 [pid 2303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2303] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2302] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2302] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2304 attached , parent_tid=[2304], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2304 [pid 2304] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2304] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2304] <... futex resumed>) = 0 [pid 2304] umount2("./file0", MNT_DETACH) = 0 [pid 2302] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2304] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2304] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2302] exit_group(0 [pid 2303] <... futex resumed>) = ? [pid 2302] <... exit_group resumed>) = ? [pid 2303] +++ exited with 0 +++ [pid 2304] <... futex resumed>) = ? [pid 2304] +++ exited with 0 +++ [pid 2302] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2302, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2305 ./strace-static-x86_64: Process 2305 attached [pid 2305] set_robust_list(0x5555564465e0, 24) = 0 [pid 2305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2305] setpgid(0, 0) = 0 [pid 2305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2305] write(3, "1000", 4) = 4 [pid 2305] close(3) = 0 [pid 2305] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2305] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2305] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2306], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2306 [pid 2305] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2305] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2306 attached [pid 2306] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2306] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2305] <... futex resumed>) = 0 [pid 2305] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2305] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2306] <... futex resumed>) = 1 [pid 2306] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2305] <... futex resumed>) = 0 [pid 2305] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2305] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2306] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2305] <... futex resumed>) = 0 [pid 2305] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2306] umount2("./file0", MNT_DETACH [pid 2305] <... futex resumed>) = 0 [pid 2305] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2305] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2305] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2307], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2307 [pid 2305] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2305] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2306] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2307 attached [pid 2306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2307] set_robust_list(0x7fc84e07e9e0, 24 [pid 2306] <... futex resumed>) = 0 [pid 2307] <... set_robust_list resumed>) = 0 [pid 2306] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2307] umount2("./file0", MNT_DETACH) = 0 [pid 2307] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2305] <... futex resumed>) = 0 [pid 2307] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2305] exit_group(0) = ? [pid 2306] <... futex resumed>) = ? [pid 2307] <... futex resumed>) = 231 [pid 2306] +++ exited with 0 +++ [pid 2307] +++ exited with 0 +++ [pid 2305] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2305, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2308 ./strace-static-x86_64: Process 2308 attached [pid 2308] set_robust_list(0x5555564465e0, 24) = 0 [pid 2308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2308] setpgid(0, 0) = 0 [pid 2308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2308] write(3, "1000", 4) = 4 [pid 2308] close(3) = 0 [pid 2308] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2308] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2308] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2309 attached , parent_tid=[2309], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2309 [pid 2309] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2309] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2308] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2309] <... futex resumed>) = 0 [pid 2308] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2309] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2308] <... futex resumed>) = 0 [pid 2308] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2308] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2309] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2308] <... futex resumed>) = 0 [pid 2309] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2308] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2308] <... futex resumed>) = 0 [pid 2309] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2308] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2309] <... mount resumed>) = 0 [pid 2309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2308] <... futex resumed>) = 0 [pid 2309] umount2("./file0", MNT_DETACH [pid 2308] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2308] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2309] <... umount2 resumed>) = 0 [pid 2308] <... futex resumed>) = 0 [pid 2309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2309] <... futex resumed>) = 0 [pid 2308] <... mmap resumed>) = 0x7fc84e05e000 [pid 2309] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2308] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2308] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2310 attached , parent_tid=[2310], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2310 [pid 2310] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2310] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2308] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2310] <... futex resumed>) = 0 [pid 2308] <... futex resumed>) = 1 [pid 2310] umount2("./file0", MNT_DETACH [pid 2308] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2310] <... umount2 resumed>) = 0 [pid 2310] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2310] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2308] exit_group(0) = ? [pid 2309] <... futex resumed>) = ? [pid 2310] <... futex resumed>) = ? [pid 2310] +++ exited with 0 +++ [pid 2309] +++ exited with 0 +++ [pid 2308] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2308, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2311 attached , child_tidptr=0x5555564465d0) = 2311 [pid 2311] set_robust_list(0x5555564465e0, 24) = 0 [pid 2311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2311] setpgid(0, 0) = 0 [pid 2311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2311] write(3, "1000", 4) = 4 [pid 2311] close(3) = 0 [pid 2311] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2311] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2311] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2312], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2312 ./strace-static-x86_64: Process 2312 attached [pid 2312] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2312] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2311] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2312] <... futex resumed>) = 0 [pid 2312] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2312] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2311] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2311] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2312] <... futex resumed>) = 0 [pid 2311] <... futex resumed>) = 1 [pid 2312] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2311] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2312] <... mount resumed>) = 0 [pid 2312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2312] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2311] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2312] <... futex resumed>) = 0 [pid 2312] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2311] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2312] <... mount resumed>) = 0 [pid 2312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2311] <... futex resumed>) = 0 [pid 2311] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2311] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2311] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2312] umount2("./file0", MNT_DETACH [pid 2311] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2312] <... umount2 resumed>) = 0 [pid 2311] <... clone resumed>, parent_tid=[2313], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2313 [pid 2312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2311] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2311] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2313 attached [pid 2313] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2313] umount2("./file0", MNT_DETACH [pid 2312] <... futex resumed>) = 0 [pid 2313] <... umount2 resumed>) = 0 [pid 2313] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2311] <... futex resumed>) = 0 [pid 2312] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2311] exit_group(0) = ? [pid 2312] <... futex resumed>) = ? [pid 2313] <... futex resumed>) = ? [pid 2313] +++ exited with 0 +++ [pid 2312] +++ exited with 0 +++ [pid 2311] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2311, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2314 attached , child_tidptr=0x5555564465d0) = 2314 [pid 2314] set_robust_list(0x5555564465e0, 24) = 0 [pid 2314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2314] setpgid(0, 0) = 0 [pid 2314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2314] write(3, "1000", 4) = 4 [pid 2314] close(3) = 0 [pid 2314] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2314] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2314] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2315 attached , parent_tid=[2315], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2315 [pid 2314] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2314] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2315] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2315] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2315] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2314] <... futex resumed>) = 0 [pid 2314] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2314] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2315] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2315] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2314] <... futex resumed>) = 0 [pid 2314] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2314] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2315] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2314] <... futex resumed>) = 0 [pid 2314] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2314] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2315] umount2("./file0", MNT_DETACH [pid 2314] <... mmap resumed>) = 0x7fc84e05e000 [pid 2314] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2314] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2316], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2316 [pid 2314] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2315] <... umount2 resumed>) = 0 [pid 2315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2314] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2315] <... futex resumed>) = 0 [pid 2315] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2316 attached [pid 2316] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2316] umount2("./file0", MNT_DETACH) = 0 [pid 2316] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2314] <... futex resumed>) = 0 [pid 2314] exit_group(0) = ? [pid 2315] <... futex resumed>) = ? [pid 2315] +++ exited with 0 +++ [pid 2316] <... futex resumed>) = ? [pid 2316] +++ exited with 0 +++ [pid 2314] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2314, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2317 attached , child_tidptr=0x5555564465d0) = 2317 [pid 2317] set_robust_list(0x5555564465e0, 24) = 0 [pid 2317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2317] setpgid(0, 0) = 0 [pid 2317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2317] write(3, "1000", 4) = 4 [pid 2317] close(3) = 0 [pid 2317] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2317] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2317] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2318], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2318 [pid 2317] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2318 attached [pid 2318] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2318] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2317] <... futex resumed>) = 0 [pid 2317] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2318] <... futex resumed>) = 1 [pid 2318] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2317] <... futex resumed>) = 0 [pid 2317] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2318] <... futex resumed>) = 1 [pid 2318] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2317] <... futex resumed>) = 0 [pid 2317] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2317] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2317] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2319], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2319 [pid 2318] umount2("./file0", MNT_DETACH [pid 2317] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2317] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2319 attached [pid 2318] <... umount2 resumed>) = 0 [pid 2319] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2319] umount2("./file0", MNT_DETACH [pid 2318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2319] <... umount2 resumed>) = 0 [pid 2318] <... futex resumed>) = 0 [pid 2319] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2317] <... futex resumed>) = 0 [pid 2317] exit_group(0) = ? [pid 2319] <... futex resumed>) = ? [pid 2318] +++ exited with 0 +++ [pid 2319] +++ exited with 0 +++ [pid 2317] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2317, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2320 attached , child_tidptr=0x5555564465d0) = 2320 [pid 2320] set_robust_list(0x5555564465e0, 24) = 0 [pid 2320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2320] setpgid(0, 0) = 0 [pid 2320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2320] write(3, "1000", 4) = 4 [pid 2320] close(3) = 0 [pid 2320] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2320] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2320] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2321], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2321 ./strace-static-x86_64: Process 2321 attached [pid 2320] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2320] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2321] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2321] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2320] <... futex resumed>) = 0 [pid 2320] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2320] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2321] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2320] <... futex resumed>) = 0 [pid 2320] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2320] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2321] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2320] <... futex resumed>) = 0 [pid 2320] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2320] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2320] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2320] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2321] umount2("./file0", MNT_DETACH) = 0 [pid 2320] <... clone resumed>, parent_tid=[2322], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2322 [pid 2320] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2320] <... futex resumed>) = 0 [pid 2320] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2322 attached [pid 2322] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2322] umount2("./file0", MNT_DETACH [pid 2321] <... futex resumed>) = 0 [pid 2322] <... umount2 resumed>) = 0 [pid 2322] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2320] <... futex resumed>) = 0 [pid 2320] exit_group(0) = ? [pid 2321] +++ exited with 0 +++ [pid 2322] <... futex resumed>) = ? [pid 2322] +++ exited with 0 +++ [pid 2320] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2320, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2323 attached , child_tidptr=0x5555564465d0) = 2323 [pid 2323] set_robust_list(0x5555564465e0, 24) = 0 [pid 2323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2323] setpgid(0, 0) = 0 [pid 2323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2323] write(3, "1000", 4) = 4 [pid 2323] close(3) = 0 [pid 2323] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2323] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2323] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2324 attached , parent_tid=[2324], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2324 [pid 2323] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2324] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2324] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2323] <... futex resumed>) = 0 [pid 2323] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2324] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2323] <... futex resumed>) = 0 [pid 2323] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2324] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2323] <... futex resumed>) = 0 [pid 2323] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2324] umount2("./file0", MNT_DETACH [pid 2323] <... mmap resumed>) = 0x7fc84e05e000 [pid 2323] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2323] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2325], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2325 [pid 2323] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2323] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2325 attached [pid 2325] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2325] umount2("./file0", MNT_DETACH) = 0 [pid 2325] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2323] <... futex resumed>) = 0 [pid 2324] <... umount2 resumed>) = 0 [pid 2325] <... futex resumed>) = 1 [pid 2325] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2324] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2323] exit_group(0) = ? [pid 2324] <... futex resumed>) = ? [pid 2325] <... futex resumed>) = ? [pid 2324] +++ exited with 0 +++ [pid 2325] +++ exited with 0 +++ [pid 2323] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2323, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2326 attached , child_tidptr=0x5555564465d0) = 2326 [pid 2326] set_robust_list(0x5555564465e0, 24) = 0 [pid 2326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2326] setpgid(0, 0) = 0 [pid 2326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2326] write(3, "1000", 4) = 4 [pid 2326] close(3) = 0 [pid 2326] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2326] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2326] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2327 attached [pid 2327] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2327] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2326] <... clone resumed>, parent_tid=[2327], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2327 [pid 2326] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2327] <... futex resumed>) = 0 [pid 2326] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2327] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2326] <... futex resumed>) = 0 [pid 2326] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2326] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2327] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2327] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2326] <... futex resumed>) = 0 [pid 2326] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2327] <... futex resumed>) = 0 [pid 2327] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2326] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2327] <... mount resumed>) = 0 [pid 2327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2327] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2326] <... futex resumed>) = 0 [pid 2326] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2327] <... futex resumed>) = 0 [pid 2327] umount2("./file0", MNT_DETACH [pid 2326] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2327] <... umount2 resumed>) = 0 [pid 2326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2327] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2326] <... mmap resumed>) = 0x7fc84e05e000 [pid 2326] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2326] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2328 attached , parent_tid=[2328], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2328 [pid 2328] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2328] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2326] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2328] <... futex resumed>) = 0 [pid 2328] umount2("./file0", MNT_DETACH [pid 2326] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2328] <... umount2 resumed>) = 0 [pid 2328] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2328] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2326] exit_group(0) = ? [pid 2327] <... futex resumed>) = ? [pid 2328] <... futex resumed>) = 231 [pid 2327] +++ exited with 0 +++ [pid 2328] +++ exited with 0 +++ [pid 2326] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2326, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2329 ./strace-static-x86_64: Process 2329 attached [pid 2329] set_robust_list(0x5555564465e0, 24) = 0 [pid 2329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2329] setpgid(0, 0) = 0 [pid 2329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2329] write(3, "1000", 4) = 4 [pid 2329] close(3) = 0 [pid 2329] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2329] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2329] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2330], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2330 ./strace-static-x86_64: Process 2330 attached [pid 2329] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2329] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2330] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2330] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2329] <... futex resumed>) = 0 [pid 2330] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2329] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2330] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2329] <... futex resumed>) = 0 [pid 2330] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2329] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2330] <... mount resumed>) = 0 [pid 2330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2329] <... futex resumed>) = 0 [pid 2329] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2329] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2330] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2329] <... futex resumed>) = 0 [pid 2329] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2329] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2329] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2329] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2330] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2331 attached [pid 2329] <... clone resumed>, parent_tid=[2331], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2331 [pid 2330] <... umount2 resumed>) = 0 [pid 2329] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2329] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2331] set_robust_list(0x7fc84e07e9e0, 24 [pid 2330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2331] <... set_robust_list resumed>) = 0 [pid 2330] <... futex resumed>) = 0 [pid 2331] umount2("./file0", MNT_DETACH [pid 2330] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2331] <... umount2 resumed>) = 0 [pid 2331] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2329] <... futex resumed>) = 0 [pid 2329] exit_group(0) = ? [pid 2330] <... futex resumed>) = ? [pid 2331] +++ exited with 0 +++ [pid 2330] +++ exited with 0 +++ [pid 2329] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2329, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2332 ./strace-static-x86_64: Process 2332 attached [pid 2332] set_robust_list(0x5555564465e0, 24) = 0 [pid 2332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2332] setpgid(0, 0) = 0 [pid 2332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2332] write(3, "1000", 4) = 4 [pid 2332] close(3) = 0 [pid 2332] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2332] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2332] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2333 attached , parent_tid=[2333], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2333 [pid 2332] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2332] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2333] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2333] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2332] <... futex resumed>) = 0 [pid 2333] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2332] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2332] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2333] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2332] <... futex resumed>) = 0 [pid 2332] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2332] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2333] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2332] <... futex resumed>) = 0 [pid 2332] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2333] umount2("./file0", MNT_DETACH [pid 2332] <... futex resumed>) = 0 [pid 2332] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2332] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2332] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2333] <... umount2 resumed>) = 0 [pid 2333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2334 attached [pid 2334] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2334] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2333] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2332] <... clone resumed>, parent_tid=[2334], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2334 [pid 2332] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2332] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2334] <... futex resumed>) = 0 [pid 2334] umount2("./file0", MNT_DETACH) = 0 [pid 2334] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2332] <... futex resumed>) = 0 [pid 2332] exit_group(0) = ? [pid 2333] <... futex resumed>) = ? [pid 2333] +++ exited with 0 +++ [pid 2334] +++ exited with 0 +++ [pid 2332] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2332, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2335 attached , child_tidptr=0x5555564465d0) = 2335 [pid 2335] set_robust_list(0x5555564465e0, 24) = 0 [pid 2335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2335] setpgid(0, 0) = 0 [pid 2335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2335] write(3, "1000", 4) = 4 [pid 2335] close(3) = 0 [pid 2335] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2335] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2335] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2336 attached , parent_tid=[2336], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2336 [pid 2336] set_robust_list(0x7fc84e09f9e0, 24 [pid 2335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2336] <... set_robust_list resumed>) = 0 [pid 2336] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2335] <... futex resumed>) = 0 [pid 2335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2336] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2335] <... futex resumed>) = 0 [pid 2335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2336] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2335] <... futex resumed>) = 0 [pid 2335] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2336] umount2("./file0", MNT_DETACH [pid 2335] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2335] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2337], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2337 [pid 2335] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2335] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2337 attached [pid 2337] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2337] umount2("./file0", MNT_DETACH) = 0 [pid 2336] <... umount2 resumed>) = 0 [pid 2337] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2337] <... futex resumed>) = 1 [pid 2336] <... futex resumed>) = 0 [pid 2335] <... futex resumed>) = 0 [pid 2337] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2336] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2335] exit_group(0) = ? [pid 2337] <... futex resumed>) = 231 [pid 2336] <... futex resumed>) = ? [pid 2337] +++ exited with 0 +++ [pid 2336] +++ exited with 0 +++ [pid 2335] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2335, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2338 ./strace-static-x86_64: Process 2338 attached [pid 2338] set_robust_list(0x5555564465e0, 24) = 0 [pid 2338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2338] setpgid(0, 0) = 0 [pid 2338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2338] write(3, "1000", 4) = 4 [pid 2338] close(3) = 0 [pid 2338] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2338] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2338] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2339 attached , parent_tid=[2339], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2339 [pid 2339] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2339] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2339] <... futex resumed>) = 0 [pid 2339] mkdir("./file0", 000 [pid 2338] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2339] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2339] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2339] <... futex resumed>) = 0 [pid 2338] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2339] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2338] <... futex resumed>) = 0 [pid 2338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2338] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2339] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2338] <... futex resumed>) = 0 [pid 2338] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2338] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2338] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2338] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2340], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2340 [pid 2339] umount2("./file0", MNT_DETACH [pid 2338] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2338] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2340 attached [pid 2340] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2340] umount2("./file0", MNT_DETACH) = 0 [pid 2340] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2338] <... futex resumed>) = 0 [pid 2340] <... futex resumed>) = 1 [pid 2340] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2339] <... umount2 resumed>) = 0 [pid 2339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2339] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2338] exit_group(0) = ? [pid 2340] <... futex resumed>) = 231 [pid 2340] +++ exited with 0 +++ [pid 2339] <... futex resumed>) = ? [pid 2339] +++ exited with 0 +++ [pid 2338] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2338, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2341 ./strace-static-x86_64: Process 2341 attached [pid 2341] set_robust_list(0x5555564465e0, 24) = 0 [pid 2341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2341] setpgid(0, 0) = 0 [pid 2341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2341] write(3, "1000", 4) = 4 [pid 2341] close(3) = 0 [pid 2341] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2341] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2341] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2342 attached [pid 2342] set_robust_list(0x7fc84e09f9e0, 24 [pid 2341] <... clone resumed>, parent_tid=[2342], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2342 [pid 2341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2342] <... set_robust_list resumed>) = 0 [pid 2341] <... futex resumed>) = 0 [pid 2341] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2342] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2341] <... futex resumed>) = 0 [pid 2341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2341] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2342] <... futex resumed>) = 1 [pid 2342] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2341] <... futex resumed>) = 0 [pid 2341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2341] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2342] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2341] <... futex resumed>) = 0 [pid 2342] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2341] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2341] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2341] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2341] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2343], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2343 [pid 2341] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2341] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2343 attached [pid 2342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2343] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2343] umount2("./file0", MNT_DETACH [pid 2342] umount2("./file0", MNT_DETACH) = 0 [pid 2342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2342] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2343] <... umount2 resumed>) = 0 [pid 2343] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2341] <... futex resumed>) = 0 [pid 2341] exit_group(0 [pid 2342] <... futex resumed>) = ? [pid 2341] <... exit_group resumed>) = ? [pid 2342] +++ exited with 0 +++ [pid 2343] <... futex resumed>) = ? [pid 2343] +++ exited with 0 +++ [pid 2341] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2341, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2344 attached , child_tidptr=0x5555564465d0) = 2344 [pid 2344] set_robust_list(0x5555564465e0, 24) = 0 [pid 2344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2344] setpgid(0, 0) = 0 [pid 2344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2344] write(3, "1000", 4) = 4 [pid 2344] close(3) = 0 [pid 2344] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2344] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2344] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2345 attached , parent_tid=[2345], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2345 [pid 2345] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2345] mkdir("./file0", 000 [pid 2344] <... futex resumed>) = 0 [pid 2345] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2345] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2344] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2345] <... futex resumed>) = 0 [pid 2344] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2345] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2345] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2344] <... futex resumed>) = 0 [pid 2344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2345] <... futex resumed>) = 0 [pid 2345] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2344] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2345] <... mount resumed>) = 0 [pid 2345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2345] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2344] <... futex resumed>) = 0 [pid 2344] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2345] <... futex resumed>) = 0 [pid 2345] umount2("./file0", MNT_DETACH [pid 2344] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2345] <... umount2 resumed>) = 0 [pid 2344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2345] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2344] <... mmap resumed>) = 0x7fc84e05e000 [pid 2344] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2344] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2346 attached , parent_tid=[2346], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2346 [pid 2346] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2346] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2344] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2346] <... futex resumed>) = 0 [pid 2346] umount2("./file0", MNT_DETACH [pid 2344] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2346] <... umount2 resumed>) = 0 [pid 2346] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2346] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2344] exit_group(0) = ? [pid 2345] <... futex resumed>) = ? [pid 2346] <... futex resumed>) = ? [pid 2345] +++ exited with 0 +++ [pid 2346] +++ exited with 0 +++ [pid 2344] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2344, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2347 ./strace-static-x86_64: Process 2347 attached [pid 2347] set_robust_list(0x5555564465e0, 24) = 0 [pid 2347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2347] setpgid(0, 0) = 0 [pid 2347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2347] write(3, "1000", 4) = 4 [pid 2347] close(3) = 0 [pid 2347] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2347] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2347] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2348 attached , parent_tid=[2348], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2348 [pid 2348] set_robust_list(0x7fc84e09f9e0, 24 [pid 2347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2348] <... set_robust_list resumed>) = 0 [pid 2347] <... futex resumed>) = 0 [pid 2347] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2348] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2347] <... futex resumed>) = 0 [pid 2347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2347] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2348] <... futex resumed>) = 1 [pid 2348] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2347] <... futex resumed>) = 0 [pid 2348] <... futex resumed>) = 1 [pid 2347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2348] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2347] <... futex resumed>) = 0 [pid 2347] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2348] <... mount resumed>) = 0 [pid 2348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2347] <... futex resumed>) = 0 [pid 2348] <... futex resumed>) = 1 [pid 2348] umount2("./file0", MNT_DETACH [pid 2347] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2347] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2348] <... umount2 resumed>) = 0 [pid 2347] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2347] <... mprotect resumed>) = 0 [pid 2348] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2347] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2349 attached , parent_tid=[2349], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2349 [pid 2349] set_robust_list(0x7fc84e07e9e0, 24 [pid 2347] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2349] <... set_robust_list resumed>) = 0 [pid 2347] <... futex resumed>) = 0 [pid 2349] umount2("./file0", MNT_DETACH [pid 2347] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2349] <... umount2 resumed>) = 0 [pid 2349] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2347] <... futex resumed>) = 0 [pid 2347] exit_group(0 [pid 2348] <... futex resumed>) = ? [pid 2347] <... exit_group resumed>) = ? [pid 2348] +++ exited with 0 +++ [pid 2349] <... futex resumed>) = ? [pid 2349] +++ exited with 0 +++ [pid 2347] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2347, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2350 attached , child_tidptr=0x5555564465d0) = 2350 [pid 2350] set_robust_list(0x5555564465e0, 24) = 0 [pid 2350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2350] setpgid(0, 0) = 0 [pid 2350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2350] write(3, "1000", 4) = 4 [pid 2350] close(3) = 0 [pid 2350] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2350] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2350] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2351], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2351 [pid 2350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2351 attached [pid 2351] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2351] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2350] <... futex resumed>) = 0 [pid 2350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2351] <... futex resumed>) = 1 [pid 2351] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2350] <... futex resumed>) = 0 [pid 2351] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2351] <... mount resumed>) = 0 [pid 2351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2350] <... futex resumed>) = 0 [pid 2350] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2350] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2350] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2352 attached [pid 2351] <... futex resumed>) = 1 [pid 2350] <... clone resumed>, parent_tid=[2352], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2352 [pid 2351] umount2("./file0", MNT_DETACH [pid 2350] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2350] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2352] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2352] umount2("./file0", MNT_DETACH) = 0 [pid 2352] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2350] <... futex resumed>) = 0 [pid 2351] <... umount2 resumed>) = 0 [pid 2352] <... futex resumed>) = 1 [pid 2352] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2351] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2350] exit_group(0) = ? [pid 2352] <... futex resumed>) = ? [pid 2351] <... futex resumed>) = ? [pid 2352] +++ exited with 0 +++ [pid 2351] +++ exited with 0 +++ [pid 2350] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2350, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2353 attached , child_tidptr=0x5555564465d0) = 2353 [pid 2353] set_robust_list(0x5555564465e0, 24) = 0 [pid 2353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2353] setpgid(0, 0) = 0 [pid 2353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2353] write(3, "1000", 4) = 4 [pid 2353] close(3) = 0 [pid 2353] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2353] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2353] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2354 attached , parent_tid=[2354], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2354 [pid 2354] set_robust_list(0x7fc84e09f9e0, 24 [pid 2353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2354] <... set_robust_list resumed>) = 0 [pid 2354] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2353] <... futex resumed>) = 0 [pid 2354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2354] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2353] <... futex resumed>) = 0 [pid 2353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2354] <... mount resumed>) = 0 [pid 2354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2353] <... futex resumed>) = 0 [pid 2353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2353] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2354] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2353] <... futex resumed>) = 0 [pid 2353] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2353] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2353] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2353] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2355], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2355 [pid 2353] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2353] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2355 attached [pid 2355] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2355] umount2("./file0", MNT_DETACH [pid 2354] umount2("./file0", MNT_DETACH) = 0 [pid 2354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2354] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2355] <... umount2 resumed>) = 0 [pid 2355] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2353] <... futex resumed>) = 0 [pid 2353] exit_group(0) = ? [pid 2355] +++ exited with 0 +++ [pid 2354] <... futex resumed>) = ? [pid 2354] +++ exited with 0 +++ [pid 2353] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2353, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2356 attached , child_tidptr=0x5555564465d0) = 2356 [pid 2356] set_robust_list(0x5555564465e0, 24) = 0 [pid 2356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2356] setpgid(0, 0) = 0 [pid 2356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2356] write(3, "1000", 4) = 4 [pid 2356] close(3) = 0 [pid 2356] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2356] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2356] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2357], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2357 [pid 2356] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2356] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2357 attached [pid 2357] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2357] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2356] <... futex resumed>) = 0 [pid 2356] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2356] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2357] <... futex resumed>) = 1 [pid 2357] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2356] <... futex resumed>) = 0 [pid 2357] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2356] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2357] <... mount resumed>) = 0 [pid 2356] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2356] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2357] <... futex resumed>) = 0 [pid 2356] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2357] umount2("./file0", MNT_DETACH [pid 2356] <... futex resumed>) = 0 [pid 2356] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2357] <... umount2 resumed>) = 0 [pid 2356] <... mmap resumed>) = 0x7fc84e05e000 [pid 2356] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2356] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2356] <... clone resumed>, parent_tid=[2358], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2358 [pid 2357] <... futex resumed>) = 0 [pid 2356] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2356] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2358 attached [pid 2357] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2358] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2358] umount2("./file0", MNT_DETACH) = 0 [pid 2358] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2356] <... futex resumed>) = 0 [pid 2358] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2356] exit_group(0) = ? [pid 2358] <... futex resumed>) = ? [pid 2358] +++ exited with 0 +++ [pid 2357] <... futex resumed>) = ? [pid 2357] +++ exited with 0 +++ [pid 2356] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2356, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2359 ./strace-static-x86_64: Process 2359 attached [pid 2359] set_robust_list(0x5555564465e0, 24) = 0 [pid 2359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2359] setpgid(0, 0) = 0 [pid 2359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2359] write(3, "1000", 4) = 4 [pid 2359] close(3) = 0 [pid 2359] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2359] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2359] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2360 attached , parent_tid=[2360], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2360 [pid 2359] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2359] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2360] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2360] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2360] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2359] <... futex resumed>) = 0 [pid 2359] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2360] <... futex resumed>) = 0 [pid 2360] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2359] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2360] <... mount resumed>) = 0 [pid 2360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2359] <... futex resumed>) = 0 [pid 2360] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2359] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2360] <... mount resumed>) = 0 [pid 2359] <... futex resumed>) = 0 [pid 2359] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2360] umount2("./file0", MNT_DETACH [pid 2359] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2359] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2360] <... umount2 resumed>) = 0 [pid 2359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2359] <... mmap resumed>) = 0x7fc84e05e000 [pid 2360] <... futex resumed>) = 0 [pid 2359] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2360] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2359] <... mprotect resumed>) = 0 [pid 2359] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2361 attached , parent_tid=[2361], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2361 [pid 2359] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2361] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2361] umount2("./file0", MNT_DETACH [pid 2359] <... futex resumed>) = 0 [pid 2361] <... umount2 resumed>) = 0 [pid 2359] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2361] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2361] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2359] exit_group(0) = ? [pid 2360] <... futex resumed>) = ? [pid 2361] <... futex resumed>) = ? [pid 2361] +++ exited with 0 +++ [pid 2360] +++ exited with 0 +++ [pid 2359] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2359, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2362 ./strace-static-x86_64: Process 2362 attached [pid 2362] set_robust_list(0x5555564465e0, 24) = 0 [pid 2362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2362] setpgid(0, 0) = 0 [pid 2362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2362] write(3, "1000", 4) = 4 [pid 2362] close(3) = 0 [pid 2362] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2362] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2362] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2363], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2363 [pid 2362] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2362] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2363 attached [pid 2363] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2363] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2362] <... futex resumed>) = 0 [pid 2362] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2363] <... futex resumed>) = 1 [pid 2362] <... futex resumed>) = 0 [pid 2363] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2362] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2363] <... mount resumed>) = 0 [pid 2363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2362] <... futex resumed>) = 0 [pid 2362] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2362] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2363] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2362] <... futex resumed>) = 0 [pid 2362] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2362] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2362] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2362] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2364], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2364 [pid 2363] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2364 attached [pid 2364] set_robust_list(0x7fc84e07e9e0, 24 [pid 2362] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2362] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2364] <... set_robust_list resumed>) = 0 [pid 2363] <... umount2 resumed>) = 0 [pid 2364] umount2("./file0", MNT_DETACH [pid 2363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2364] <... umount2 resumed>) = 0 [pid 2363] <... futex resumed>) = 0 [pid 2364] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2362] <... futex resumed>) = 0 [pid 2362] exit_group(0) = ? [pid 2364] <... futex resumed>) = ? [pid 2364] +++ exited with 0 +++ [pid 2363] +++ exited with 0 +++ [pid 2362] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2362, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2365 ./strace-static-x86_64: Process 2365 attached [pid 2365] set_robust_list(0x5555564465e0, 24) = 0 [pid 2365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2365] setpgid(0, 0) = 0 [pid 2365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2365] write(3, "1000", 4) = 4 [pid 2365] close(3) = 0 [pid 2365] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2365] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2365] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2366 attached , parent_tid=[2366], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2366 [pid 2366] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2366] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2365] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2366] <... futex resumed>) = 0 [pid 2365] <... futex resumed>) = 1 [pid 2365] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2366] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2366] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2365] <... futex resumed>) = 0 [pid 2365] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2366] <... futex resumed>) = 0 [pid 2366] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2365] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2366] <... mount resumed>) = 0 [pid 2366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2365] <... futex resumed>) = 0 [pid 2366] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2365] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2365] <... futex resumed>) = 0 [pid 2366] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2365] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2366] <... mount resumed>) = 0 [pid 2366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2365] <... futex resumed>) = 0 [pid 2365] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2366] umount2("./file0", MNT_DETACH [pid 2365] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2365] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2365] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2366] <... umount2 resumed>) = 0 [pid 2366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2365] <... clone resumed>, parent_tid=[2367], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2367 [pid 2366] <... futex resumed>) = 0 [pid 2365] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2366] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2365] <... futex resumed>) = 0 [pid 2365] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2367 attached [pid 2367] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2367] umount2("./file0", MNT_DETACH) = 0 [pid 2367] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2365] <... futex resumed>) = 0 [pid 2365] exit_group(0) = ? [pid 2366] <... futex resumed>) = ? [pid 2366] +++ exited with 0 +++ [pid 2367] +++ exited with 0 +++ [pid 2365] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2365, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2368 attached , child_tidptr=0x5555564465d0) = 2368 [pid 2368] set_robust_list(0x5555564465e0, 24) = 0 [pid 2368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2368] setpgid(0, 0) = 0 [pid 2368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2368] write(3, "1000", 4) = 4 [pid 2368] close(3) = 0 [pid 2368] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2368] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2368] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2369 attached , parent_tid=[2369], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2369 [pid 2369] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2369] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2369] <... futex resumed>) = 0 [pid 2369] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2369] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2368] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2369] <... futex resumed>) = 0 [pid 2369] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2368] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2369] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2368] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2369] <... futex resumed>) = 0 [pid 2369] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2368] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2369] <... mount resumed>) = 0 [pid 2369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2369] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2368] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2369] <... futex resumed>) = 0 [pid 2369] umount2("./file0", MNT_DETACH [pid 2368] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2369] <... umount2 resumed>) = 0 [pid 2369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2369] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] <... futex resumed>) = 0 [pid 2368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2368] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2368] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2370 attached , parent_tid=[2370], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2370 [pid 2370] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2370] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2370] <... futex resumed>) = 0 [pid 2370] umount2("./file0", MNT_DETACH [pid 2368] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2370] <... umount2 resumed>) = 0 [pid 2370] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2368] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2370] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2368] exit_group(0 [pid 2369] <... futex resumed>) = ? [pid 2369] +++ exited with 0 +++ [pid 2370] <... futex resumed>) = ? [pid 2370] +++ exited with 0 +++ [pid 2368] <... exit_group resumed>) = ? [pid 2368] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2368, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2371 attached , child_tidptr=0x5555564465d0) = 2371 [pid 2371] set_robust_list(0x5555564465e0, 24) = 0 [pid 2371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2371] setpgid(0, 0) = 0 [pid 2371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2371] write(3, "1000", 4) = 4 [pid 2371] close(3) = 0 [pid 2371] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2371] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2371] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2372 attached , parent_tid=[2372], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2372 [pid 2371] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2371] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2372] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2372] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2371] <... futex resumed>) = 0 [pid 2372] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 2371] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2372] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2371] <... futex resumed>) = 0 [pid 2371] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2372] <... mount resumed>) = 0 [pid 2372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2371] <... futex resumed>) = 0 [pid 2371] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2371] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2372] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2371] <... futex resumed>) = 0 [pid 2371] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2371] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2371] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2372] umount2("./file0", MNT_DETACH [pid 2371] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2373], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2373 [pid 2371] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2371] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2373 attached [pid 2373] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2373] umount2("./file0", MNT_DETACH [pid 2372] <... umount2 resumed>) = 0 [pid 2373] <... umount2 resumed>) = 0 [pid 2373] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2371] <... futex resumed>) = 0 [pid 2373] <... futex resumed>) = 1 [pid 2373] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2372] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2371] exit_group(0) = ? [pid 2372] <... futex resumed>) = ? [pid 2373] <... futex resumed>) = ? [pid 2372] +++ exited with 0 +++ [pid 2373] +++ exited with 0 +++ [pid 2371] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2371, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2374 ./strace-static-x86_64: Process 2374 attached [pid 2374] set_robust_list(0x5555564465e0, 24) = 0 [pid 2374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2374] setpgid(0, 0) = 0 [pid 2374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2374] write(3, "1000", 4) = 4 [pid 2374] close(3) = 0 [pid 2374] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2374] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2374] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2375 attached [pid 2375] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2374] <... clone resumed>, parent_tid=[2375], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2375 [pid 2374] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2375] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2374] <... futex resumed>) = 0 [pid 2374] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2375] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2374] <... futex resumed>) = 0 [pid 2374] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2375] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2374] <... futex resumed>) = 0 [pid 2374] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2374] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2375] umount2("./file0", MNT_DETACH) = 0 [pid 2375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2374] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2376], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2376 [pid 2374] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2374] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2376 attached [pid 2376] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2376] umount2("./file0", MNT_DETACH [pid 2375] <... futex resumed>) = 0 [pid 2376] <... umount2 resumed>) = 0 [pid 2375] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2376] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2374] <... futex resumed>) = 0 [pid 2374] exit_group(0 [pid 2375] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 2374] <... exit_group resumed>) = ? [pid 2376] <... futex resumed>) = ? [pid 2375] +++ exited with 0 +++ [pid 2376] +++ exited with 0 +++ [pid 2374] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2374, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2377 attached , child_tidptr=0x5555564465d0) = 2377 [pid 2377] set_robust_list(0x5555564465e0, 24) = 0 [pid 2377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2377] setpgid(0, 0) = 0 [pid 2377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2377] write(3, "1000", 4) = 4 [pid 2377] close(3) = 0 [pid 2377] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2377] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2377] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2377] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2378 attached , parent_tid=[2378], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2378 [pid 2377] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2378] set_robust_list(0x7fc84e09f9e0, 24 [pid 2377] <... futex resumed>) = 0 [pid 2378] <... set_robust_list resumed>) = 0 [pid 2377] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2378] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2378] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2377] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2378] <... futex resumed>) = 0 [pid 2377] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2378] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2377] <... futex resumed>) = 0 [pid 2378] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2377] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2378] <... futex resumed>) = 0 [pid 2378] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2377] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2378] <... mount resumed>) = 0 [pid 2378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2378] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2377] <... futex resumed>) = 0 [pid 2377] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2378] <... futex resumed>) = 0 [pid 2377] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2378] umount2("./file0", MNT_DETACH [pid 2377] <... futex resumed>) = 0 [pid 2377] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2378] <... umount2 resumed>) = 0 [pid 2377] <... mmap resumed>) = 0x7fc84e05e000 [pid 2378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2377] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2378] <... futex resumed>) = 0 [pid 2377] <... mprotect resumed>) = 0 [pid 2378] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2377] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2379 attached , parent_tid=[2379], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2379 [pid 2379] set_robust_list(0x7fc84e07e9e0, 24 [pid 2377] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2379] <... set_robust_list resumed>) = 0 [pid 2377] <... futex resumed>) = 0 [pid 2379] umount2("./file0", MNT_DETACH [pid 2377] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2379] <... umount2 resumed>) = 0 [pid 2379] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2377] <... futex resumed>) = 0 [pid 2379] <... futex resumed>) = 1 [pid 2377] exit_group(0 [pid 2379] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2377] <... exit_group resumed>) = ? [pid 2378] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2379] <... futex resumed>) = ? [pid 2378] +++ exited with 0 +++ [pid 2379] +++ exited with 0 +++ [pid 2377] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2377, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2380 attached , child_tidptr=0x5555564465d0) = 2380 [pid 2380] set_robust_list(0x5555564465e0, 24) = 0 [pid 2380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2380] setpgid(0, 0) = 0 [pid 2380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2380] write(3, "1000", 4) = 4 [pid 2380] close(3) = 0 [pid 2380] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2380] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2380] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2381], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2381 [pid 2380] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2380] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2381 attached [pid 2381] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2381] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2380] <... futex resumed>) = 0 [pid 2380] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2380] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2381] <... futex resumed>) = 1 [pid 2381] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2380] <... futex resumed>) = 0 [pid 2381] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2380] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2380] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2381] <... mount resumed>) = 0 [pid 2381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2380] <... futex resumed>) = 0 [pid 2381] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2380] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2380] <... futex resumed>) = 0 [pid 2381] umount2("./file0", MNT_DETACH [pid 2380] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2381] <... umount2 resumed>) = 0 [pid 2380] <... futex resumed>) = 0 [pid 2380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2380] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2380] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2381] <... futex resumed>) = 0 [pid 2381] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2380] <... clone resumed>, parent_tid=[2382], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2382 [pid 2380] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2380] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2382 attached [pid 2382] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2382] umount2("./file0", MNT_DETACH) = 0 [pid 2382] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2380] <... futex resumed>) = 0 [pid 2382] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2380] exit_group(0) = ? [pid 2381] <... futex resumed>) = ? [pid 2381] +++ exited with 0 +++ [pid 2382] <... futex resumed>) = ? [pid 2382] +++ exited with 0 +++ [pid 2380] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2380, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2383 attached , child_tidptr=0x5555564465d0) = 2383 [pid 2383] set_robust_list(0x5555564465e0, 24) = 0 [pid 2383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2383] setpgid(0, 0) = 0 [pid 2383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2383] write(3, "1000", 4) = 4 [pid 2383] close(3) = 0 [pid 2383] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2383] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2383] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2383] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2384 attached [pid 2384] set_robust_list(0x7fc84e09f9e0, 24 [pid 2383] <... clone resumed>, parent_tid=[2384], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2384 [pid 2384] <... set_robust_list resumed>) = 0 [pid 2383] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2384] mkdir("./file0", 000 [pid 2383] <... futex resumed>) = 0 [pid 2384] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2383] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2383] <... futex resumed>) = 0 [pid 2384] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2383] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2383] <... futex resumed>) = 0 [pid 2384] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2383] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2384] <... mount resumed>) = 0 [pid 2384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2383] <... futex resumed>) = 0 [pid 2384] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2383] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2383] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2384] <... mount resumed>) = 0 [pid 2384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2383] <... futex resumed>) = 0 [pid 2383] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2384] umount2("./file0", MNT_DETACH [pid 2383] <... futex resumed>) = 0 [pid 2383] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2383] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2383] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2383] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2385], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2385 [pid 2383] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2383] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2385 attached [pid 2385] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2385] umount2("./file0", MNT_DETACH) = 0 [pid 2385] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2383] <... futex resumed>) = 0 [pid 2384] <... umount2 resumed>) = 0 [pid 2385] <... futex resumed>) = 1 [pid 2385] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2384] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2383] exit_group(0 [pid 2384] <... futex resumed>) = 230 [pid 2383] <... exit_group resumed>) = ? [pid 2385] <... futex resumed>) = ? [pid 2384] +++ exited with 0 +++ [pid 2385] +++ exited with 0 +++ [pid 2383] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2383, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2387 attached , child_tidptr=0x5555564465d0) = 2387 [pid 2387] set_robust_list(0x5555564465e0, 24) = 0 [pid 2387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2387] setpgid(0, 0) = 0 [pid 2387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2387] write(3, "1000", 4) = 4 [pid 2387] close(3) = 0 [pid 2387] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2387] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2387] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2388 attached , parent_tid=[2388], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2388 [pid 2387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2388] set_robust_list(0x7fc84e09f9e0, 24 [pid 2387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2388] <... set_robust_list resumed>) = 0 [pid 2388] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2387] <... futex resumed>) = 0 [pid 2388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2387] <... futex resumed>) = 0 [pid 2388] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2388] <... mount resumed>) = 0 [pid 2388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2387] <... futex resumed>) = 0 [pid 2388] <... futex resumed>) = 1 [pid 2387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2388] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2387] <... futex resumed>) = 0 [pid 2387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2388] <... mount resumed>) = 0 [pid 2388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2387] <... futex resumed>) = 0 [pid 2387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2387] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2387] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2387] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2388] umount2("./file0", MNT_DETACH [pid 2387] <... clone resumed>, parent_tid=[2389], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2389 [pid 2387] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2387] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2389 attached [pid 2389] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2389] umount2("./file0", MNT_DETACH [pid 2388] <... umount2 resumed>) = 0 [pid 2389] <... umount2 resumed>) = 0 [pid 2388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2389] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2387] <... futex resumed>) = 0 [pid 2387] exit_group(0) = ? [pid 2389] <... futex resumed>) = ? [pid 2388] <... futex resumed>) = ? [pid 2389] +++ exited with 0 +++ [pid 2388] +++ exited with 0 +++ [pid 2387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2390 attached , child_tidptr=0x5555564465d0) = 2390 [pid 2390] set_robust_list(0x5555564465e0, 24) = 0 [pid 2390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2390] setpgid(0, 0) = 0 [pid 2390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2390] write(3, "1000", 4) = 4 [pid 2390] close(3) = 0 [pid 2390] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2390] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2390] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2391 attached , parent_tid=[2391], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2391 [pid 2391] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2391] <... futex resumed>) = 0 [pid 2390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2391] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2390] <... futex resumed>) = 0 [pid 2390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2391] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2390] <... futex resumed>) = 0 [pid 2391] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2391] <... mount resumed>) = 0 [pid 2391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2390] <... futex resumed>) = 0 [pid 2391] umount2("./file0", MNT_DETACH [pid 2390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2390] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2391] <... umount2 resumed>) = 0 [pid 2391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2390] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2391] <... futex resumed>) = 0 [pid 2390] <... mprotect resumed>) = 0 [pid 2391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2390] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2392 attached , parent_tid=[2392], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2392 [pid 2390] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2390] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2392] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2392] umount2("./file0", MNT_DETACH) = 0 [pid 2392] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2392] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2390] <... futex resumed>) = 0 [pid 2390] exit_group(0) = ? [pid 2391] <... futex resumed>) = ? [pid 2392] <... futex resumed>) = ? [pid 2391] +++ exited with 0 +++ [pid 2392] +++ exited with 0 +++ [pid 2390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2393 ./strace-static-x86_64: Process 2393 attached [pid 2393] set_robust_list(0x5555564465e0, 24) = 0 [pid 2393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2393] setpgid(0, 0) = 0 [pid 2393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2393] write(3, "1000", 4) = 4 [pid 2393] close(3) = 0 [pid 2393] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2393] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2393] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2394], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2394 [pid 2393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2394 attached [pid 2394] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2394] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2393] <... futex resumed>) = 0 [pid 2393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2394] <... futex resumed>) = 1 [pid 2394] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2393] <... futex resumed>) = 0 [pid 2393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2394] <... futex resumed>) = 1 [pid 2393] <... futex resumed>) = 0 [pid 2394] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2394] <... mount resumed>) = 0 [pid 2394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2393] <... futex resumed>) = 0 [pid 2394] umount2("./file0", MNT_DETACH [pid 2393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2393] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2393] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2394] <... umount2 resumed>) = 0 [pid 2393] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2393] <... clone resumed>, parent_tid=[2395], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2395 [pid 2393] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2393] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2395 attached [pid 2395] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2395] umount2("./file0", MNT_DETACH) = 0 [pid 2395] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2393] <... futex resumed>) = 0 [pid 2395] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2393] exit_group(0 [pid 2395] <... futex resumed>) = ? [pid 2393] <... exit_group resumed>) = ? [pid 2394] <... futex resumed>) = ? [pid 2394] +++ exited with 0 +++ [pid 2395] +++ exited with 0 +++ [pid 2393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2396 ./strace-static-x86_64: Process 2396 attached [pid 2396] set_robust_list(0x5555564465e0, 24) = 0 [pid 2396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2396] setpgid(0, 0) = 0 [pid 2396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2396] write(3, "1000", 4) = 4 [pid 2396] close(3) = 0 [pid 2396] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2396] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2396] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2397 attached , parent_tid=[2397], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2397 [pid 2396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2397] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2397] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2396] <... futex resumed>) = 0 [pid 2396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2397] <... futex resumed>) = 1 [pid 2397] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2396] <... futex resumed>) = 0 [pid 2397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2396] <... futex resumed>) = 0 [pid 2396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2397] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2396] <... futex resumed>) = 0 [pid 2396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2396] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2396] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2396] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2397] umount2("./file0", MNT_DETACH [pid 2396] <... clone resumed>, parent_tid=[2398], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2398 [pid 2396] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2396] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2398 attached [pid 2398] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2398] umount2("./file0", MNT_DETACH [pid 2397] <... umount2 resumed>) = 0 [pid 2398] <... umount2 resumed>) = 0 [pid 2397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2398] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2396] <... futex resumed>) = 0 [pid 2396] exit_group(0) = ? [pid 2398] <... futex resumed>) = ? [pid 2397] <... futex resumed>) = ? [pid 2398] +++ exited with 0 +++ [pid 2397] +++ exited with 0 +++ [pid 2396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2399 attached , child_tidptr=0x5555564465d0) = 2399 [pid 2399] set_robust_list(0x5555564465e0, 24) = 0 [pid 2399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2399] setpgid(0, 0) = 0 [pid 2399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2399] write(3, "1000", 4) = 4 [pid 2399] close(3) = 0 [pid 2399] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2399] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2399] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2400 attached , parent_tid=[2400], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2400 [pid 2399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2400] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2400] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2399] <... futex resumed>) = 0 [pid 2399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2400] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2399] <... futex resumed>) = 0 [pid 2399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2400] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2399] <... futex resumed>) = 0 [pid 2399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2399] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2399] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2399] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2399] <... clone resumed>, parent_tid=[2401], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2401 [pid 2400] umount2("./file0", MNT_DETACH [pid 2399] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2401 attached [pid 2399] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2401] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2401] umount2("./file0", MNT_DETACH) = 0 [pid 2400] <... umount2 resumed>) = 0 [pid 2401] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2399] <... futex resumed>) = 0 [pid 2401] <... futex resumed>) = 1 [pid 2401] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2399] exit_group(0) = ? [pid 2401] <... futex resumed>) = ? [pid 2400] <... futex resumed>) = 231 [pid 2401] +++ exited with 0 +++ [pid 2400] +++ exited with 0 +++ [pid 2399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2402 ./strace-static-x86_64: Process 2402 attached [pid 2402] set_robust_list(0x5555564465e0, 24) = 0 [pid 2402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2402] setpgid(0, 0) = 0 [pid 2402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2402] write(3, "1000", 4) = 4 [pid 2402] close(3) = 0 [pid 2402] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2402] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2402] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2403 attached , parent_tid=[2403], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2403 [pid 2402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2403] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2403] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2402] <... futex resumed>) = 0 [pid 2402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2403] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2402] <... futex resumed>) = 0 [pid 2402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2403] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2402] <... futex resumed>) = 0 [pid 2402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2402] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2402] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2404], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2404 [pid 2402] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2402] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2403] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2404 attached ) = 0 [pid 2404] set_robust_list(0x7fc84e07e9e0, 24 [pid 2403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2404] <... set_robust_list resumed>) = 0 [pid 2403] <... futex resumed>) = 0 [pid 2404] umount2("./file0", MNT_DETACH [pid 2403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2404] <... umount2 resumed>) = 0 [pid 2404] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2402] <... futex resumed>) = 0 [pid 2402] exit_group(0 [pid 2404] <... futex resumed>) = ? [pid 2403] <... futex resumed>) = ? [pid 2402] <... exit_group resumed>) = ? [pid 2404] +++ exited with 0 +++ [pid 2403] +++ exited with 0 +++ [pid 2402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2405 ./strace-static-x86_64: Process 2405 attached [pid 2405] set_robust_list(0x5555564465e0, 24) = 0 [pid 2405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2405] setpgid(0, 0) = 0 [pid 2405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2405] write(3, "1000", 4) = 4 [pid 2405] close(3) = 0 [pid 2405] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2405] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2405] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2406], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2406 [pid 2405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2406 attached [pid 2406] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2406] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2405] <... futex resumed>) = 0 [pid 2405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2406] <... futex resumed>) = 1 [pid 2406] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2405] <... futex resumed>) = 0 [pid 2405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2406] <... futex resumed>) = 1 [pid 2406] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2405] <... futex resumed>) = 0 [pid 2405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2406] umount2("./file0", MNT_DETACH [pid 2405] <... futex resumed>) = 0 [pid 2405] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2406] <... umount2 resumed>) = 0 [pid 2405] <... futex resumed>) = 0 [pid 2405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2405] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2405] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2407 attached , parent_tid=[2407], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2407 [pid 2407] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2407] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2405] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2405] <... futex resumed>) = 1 [pid 2405] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2407] <... futex resumed>) = 0 [pid 2407] umount2("./file0", MNT_DETACH [pid 2406] <... futex resumed>) = 0 [pid 2407] <... umount2 resumed>) = 0 [pid 2407] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2405] <... futex resumed>) = 0 [pid 2407] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2405] exit_group(0) = ? [pid 2407] <... futex resumed>) = ? [pid 2407] +++ exited with 0 +++ [pid 2406] +++ exited with 0 +++ [pid 2405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2408 ./strace-static-x86_64: Process 2408 attached [pid 2408] set_robust_list(0x5555564465e0, 24) = 0 [pid 2408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2408] setpgid(0, 0) = 0 [pid 2408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2408] write(3, "1000", 4) = 4 [pid 2408] close(3) = 0 [pid 2408] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2408] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2408] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2409 attached , parent_tid=[2409], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2409 [pid 2409] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2409] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2408] <... futex resumed>) = 1 [pid 2409] <... futex resumed>) = 0 [pid 2409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2409] <... futex resumed>) = 0 [pid 2409] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2408] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2409] <... futex resumed>) = 0 [pid 2409] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2409] <... mount resumed>) = 0 [pid 2409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2408] <... futex resumed>) = 0 [pid 2408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2408] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2409] umount2("./file0", MNT_DETACH [pid 2408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2408] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2409] <... umount2 resumed>) = 0 [pid 2408] <... mprotect resumed>) = 0 [pid 2408] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2410], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2410 [pid 2408] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2408] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2409] <... futex resumed>) = 0 ./strace-static-x86_64: Process 2410 attached [pid 2410] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2410] umount2("./file0", MNT_DETACH [pid 2409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2410] <... umount2 resumed>) = 0 [pid 2410] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2408] <... futex resumed>) = 0 [pid 2410] <... futex resumed>) = 1 [pid 2408] exit_group(0 [pid 2410] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 2408] <... exit_group resumed>) = ? [pid 2409] <... futex resumed>) = ? [pid 2409] +++ exited with 0 +++ [pid 2410] +++ exited with 0 +++ [pid 2408] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2411 attached , child_tidptr=0x5555564465d0) = 2411 [pid 2411] set_robust_list(0x5555564465e0, 24) = 0 [pid 2411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2411] setpgid(0, 0) = 0 [pid 2411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2411] write(3, "1000", 4) = 4 [pid 2411] close(3) = 0 [pid 2411] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2411] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2411] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2412 attached [pid 2412] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2411] <... clone resumed>, parent_tid=[2412], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2412 [pid 2411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2412] <... futex resumed>) = 0 [pid 2411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2412] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2411] <... futex resumed>) = 0 [pid 2411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2412] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2411] <... futex resumed>) = 0 [pid 2411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2412] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2411] <... futex resumed>) = 0 [pid 2411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2411] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2411] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2411] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2412] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2413 attached [pid 2411] <... clone resumed>, parent_tid=[2413], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2413 [pid 2411] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2411] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2412] <... umount2 resumed>) = 0 [pid 2412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2413] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2413] umount2("./file0", MNT_DETACH) = 0 [pid 2413] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2411] <... futex resumed>) = 0 [pid 2411] exit_group(0) = ? [pid 2412] <... futex resumed>) = ? [pid 2412] +++ exited with 0 +++ [pid 2413] +++ exited with 0 +++ [pid 2411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2414 ./strace-static-x86_64: Process 2414 attached [pid 2414] set_robust_list(0x5555564465e0, 24) = 0 [pid 2414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2414] setpgid(0, 0) = 0 [pid 2414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2414] write(3, "1000", 4) = 4 [pid 2414] close(3) = 0 [pid 2414] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2414] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2414] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2415 attached , parent_tid=[2415], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2415 [pid 2415] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2415] <... futex resumed>) = 0 [pid 2414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2415] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] <... futex resumed>) = 0 [pid 2414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2415] <... futex resumed>) = 0 [pid 2415] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2415] <... futex resumed>) = 0 [pid 2415] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2415] <... futex resumed>) = 0 [pid 2415] umount2("./file0", MNT_DETACH) = 0 [pid 2414] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] <... futex resumed>) = 0 [pid 2414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2414] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2414] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2416 attached [pid 2416] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2416] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] <... clone resumed>, parent_tid=[2416], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2416 [pid 2414] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2416] <... futex resumed>) = 0 [pid 2416] umount2("./file0", MNT_DETACH) = 0 [pid 2416] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2416] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2414] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2414] exit_group(0 [pid 2415] <... futex resumed>) = ? [pid 2414] <... exit_group resumed>) = ? [pid 2415] +++ exited with 0 +++ [pid 2416] <... futex resumed>) = ? [pid 2416] +++ exited with 0 +++ [pid 2414] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2417 attached , child_tidptr=0x5555564465d0) = 2417 [pid 2417] set_robust_list(0x5555564465e0, 24) = 0 [pid 2417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2417] setpgid(0, 0) = 0 [pid 2417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2417] write(3, "1000", 4) = 4 [pid 2417] close(3) = 0 [pid 2417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2417] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2417] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2418 attached , parent_tid=[2418], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2418 [pid 2417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2418] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2418] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2417] <... futex resumed>) = 0 [pid 2418] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2418] <... mount resumed>) = 0 [pid 2418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2417] <... futex resumed>) = 0 [pid 2417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2418] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2417] <... futex resumed>) = 0 [pid 2418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2417] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2417] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2418] umount2("./file0", MNT_DETACH [pid 2417] <... clone resumed>, parent_tid=[2419], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2419 [pid 2417] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2417] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2419 attached [pid 2419] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2419] umount2("./file0", MNT_DETACH [pid 2418] <... umount2 resumed>) = 0 [pid 2419] <... umount2 resumed>) = 0 [pid 2419] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2417] <... futex resumed>) = 0 [pid 2419] <... futex resumed>) = 1 [pid 2418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2419] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2418] <... futex resumed>) = 0 [pid 2418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2417] exit_group(0) = ? [pid 2419] <... futex resumed>) = ? [pid 2418] <... futex resumed>) = 231 [pid 2419] +++ exited with 0 +++ [pid 2418] +++ exited with 0 +++ [pid 2417] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2420 ./strace-static-x86_64: Process 2420 attached [pid 2420] set_robust_list(0x5555564465e0, 24) = 0 [pid 2420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2420] setpgid(0, 0) = 0 [pid 2420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2420] write(3, "1000", 4) = 4 [pid 2420] close(3) = 0 [pid 2420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2420] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2420] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2421 attached , parent_tid=[2421], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2421 [pid 2421] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2421] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2420] <... futex resumed>) = 1 [pid 2421] <... futex resumed>) = 0 [pid 2421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2421] <... futex resumed>) = 0 [pid 2421] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2421] <... futex resumed>) = 0 [pid 2421] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2421] <... mount resumed>) = 0 [pid 2421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2421] <... futex resumed>) = 0 [pid 2421] umount2("./file0", MNT_DETACH) = 0 [pid 2421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2421] <... futex resumed>) = 0 [pid 2420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2421] umount2("./file0", MNT_DETACH) = 0 [pid 2421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2420] <... futex resumed>) = 0 [pid 2420] exit_group(0) = ? [pid 2421] <... futex resumed>) = ? [pid 2421] +++ exited with 0 +++ [pid 2420] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2420, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2422 ./strace-static-x86_64: Process 2422 attached [pid 2422] set_robust_list(0x5555564465e0, 24) = 0 [pid 2422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2422] setpgid(0, 0) = 0 [pid 2422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2422] write(3, "1000", 4) = 4 [pid 2422] close(3) = 0 [pid 2422] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2422] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2422] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2423], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2423 ./strace-static-x86_64: Process 2423 attached [pid 2423] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2423] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2422] <... futex resumed>) = 0 [pid 2423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2423] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2422] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2422] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2423] <... futex resumed>) = 0 [pid 2423] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2422] <... futex resumed>) = 0 [pid 2422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2422] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2423] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2422] <... futex resumed>) = 0 [pid 2422] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2422] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2422] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2423] umount2("./file0", MNT_DETACH [pid 2422] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2424], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2424 [pid 2422] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2422] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2424 attached [pid 2424] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2424] umount2("./file0", MNT_DETACH) = 0 [pid 2424] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2422] <... futex resumed>) = 0 [pid 2424] <... futex resumed>) = 1 [pid 2424] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2423] <... umount2 resumed>) = 0 [pid 2423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2423] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2422] exit_group(0) = ? [pid 2424] <... futex resumed>) = ? [pid 2424] +++ exited with 0 +++ [pid 2423] <... futex resumed>) = ? [pid 2423] +++ exited with 0 +++ [pid 2422] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2422, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2425 ./strace-static-x86_64: Process 2425 attached [pid 2425] set_robust_list(0x5555564465e0, 24) = 0 [pid 2425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2425] setpgid(0, 0) = 0 [pid 2425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2425] write(3, "1000", 4) = 4 [pid 2425] close(3) = 0 [pid 2425] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2425] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2425] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2426 attached , parent_tid=[2426], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2426 [pid 2426] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2426] <... futex resumed>) = 0 [pid 2426] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2425] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2426] <... futex resumed>) = 0 [pid 2426] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2425] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2426] <... futex resumed>) = 0 [pid 2426] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2425] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2426] <... mount resumed>) = 0 [pid 2426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2425] <... futex resumed>) = 0 [pid 2425] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2425] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2426] umount2("./file0", MNT_DETACH [pid 2425] <... mmap resumed>) = 0x7fc84e05e000 [pid 2426] <... umount2 resumed>) = 0 [pid 2426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2426] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2425] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2425] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2427 attached , parent_tid=[2427], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2427 [pid 2427] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2427] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2425] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2427] <... futex resumed>) = 0 [pid 2427] umount2("./file0", MNT_DETACH) = 0 [pid 2427] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2425] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2427] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2425] exit_group(0 [pid 2426] <... futex resumed>) = ? [pid 2425] <... exit_group resumed>) = ? [pid 2426] +++ exited with 0 +++ [pid 2427] <... futex resumed>) = ? [pid 2427] +++ exited with 0 +++ [pid 2425] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2425, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2428 attached , child_tidptr=0x5555564465d0) = 2428 [pid 2428] set_robust_list(0x5555564465e0, 24) = 0 [pid 2428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2428] setpgid(0, 0) = 0 [pid 2428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2428] write(3, "1000", 4) = 4 [pid 2428] close(3) = 0 [pid 2428] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2428] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2428] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2429 attached , parent_tid=[2429], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2429 [pid 2429] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2429] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] <... futex resumed>) = 1 [pid 2429] <... futex resumed>) = 0 [pid 2429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2429] <... futex resumed>) = 0 [pid 2429] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2429] <... futex resumed>) = 0 [pid 2429] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2428] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2429] <... mount resumed>) = 0 [pid 2429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2429] <... futex resumed>) = 0 [pid 2429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2429] <... futex resumed>) = 0 [pid 2429] umount2("./file0", MNT_DETACH [pid 2428] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2429] <... umount2 resumed>) = 0 [pid 2429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2429] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] <... futex resumed>) = 0 [pid 2428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2428] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2428] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2430 attached [pid 2430] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2430] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] <... clone resumed>, parent_tid=[2430], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2430 [pid 2428] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2430] <... futex resumed>) = 0 [pid 2430] umount2("./file0", MNT_DETACH [pid 2428] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2430] <... umount2 resumed>) = 0 [pid 2430] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2430] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2428] exit_group(0 [pid 2429] <... futex resumed>) = ? [pid 2428] <... exit_group resumed>) = ? [pid 2429] +++ exited with 0 +++ [pid 2430] <... futex resumed>) = ? [pid 2430] +++ exited with 0 +++ [pid 2428] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2428, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2431 attached , child_tidptr=0x5555564465d0) = 2431 [pid 2431] set_robust_list(0x5555564465e0, 24) = 0 [pid 2431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2431] setpgid(0, 0) = 0 [pid 2431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2431] write(3, "1000", 4) = 4 [pid 2431] close(3) = 0 [pid 2431] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2431] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2431] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2432], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2432 [pid 2431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2432 attached [pid 2432] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2432] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2431] <... futex resumed>) = 0 [pid 2431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2432] <... futex resumed>) = 1 [pid 2432] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2431] <... futex resumed>) = 0 [pid 2431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2432] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2431] <... futex resumed>) = 0 [pid 2431] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2431] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2431] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2433], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2433 [pid 2432] umount2("./file0", MNT_DETACH [pid 2431] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2431] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2433 attached [pid 2433] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2433] umount2("./file0", MNT_DETACH [pid 2432] <... umount2 resumed>) = 0 [pid 2433] <... umount2 resumed>) = 0 [pid 2433] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2431] <... futex resumed>) = 0 [pid 2433] <... futex resumed>) = 1 [pid 2433] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2432] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2431] exit_group(0) = ? [pid 2433] <... futex resumed>) = ? [pid 2432] <... futex resumed>) = ? [pid 2433] +++ exited with 0 +++ [pid 2432] +++ exited with 0 +++ [pid 2431] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2431, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2434 ./strace-static-x86_64: Process 2434 attached [pid 2434] set_robust_list(0x5555564465e0, 24) = 0 [pid 2434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2434] setpgid(0, 0) = 0 [pid 2434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2434] write(3, "1000", 4) = 4 [pid 2434] close(3) = 0 [pid 2434] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2434] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2434] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2435 attached , parent_tid=[2435], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2435 [pid 2434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2435] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2435] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2434] <... futex resumed>) = 0 [pid 2434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2435] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2434] <... futex resumed>) = 0 [pid 2434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2435] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2434] <... futex resumed>) = 0 [pid 2434] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2434] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2434] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2435] umount2("./file0", MNT_DETACH [pid 2434] <... clone resumed>, parent_tid=[2436], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2436 [pid 2434] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2434] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2436 attached [pid 2436] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2436] umount2("./file0", MNT_DETACH) = 0 [pid 2436] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2434] <... futex resumed>) = 0 [pid 2436] <... futex resumed>) = 1 [pid 2436] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2435] <... umount2 resumed>) = 0 [pid 2435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2435] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2434] exit_group(0) = ? [pid 2436] <... futex resumed>) = ? [pid 2435] <... futex resumed>) = ? [pid 2435] +++ exited with 0 +++ [pid 2436] +++ exited with 0 +++ [pid 2434] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2434, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2437 ./strace-static-x86_64: Process 2437 attached [pid 2437] set_robust_list(0x5555564465e0, 24) = 0 [pid 2437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2437] setpgid(0, 0) = 0 [pid 2437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2437] write(3, "1000", 4) = 4 [pid 2437] close(3) = 0 [pid 2437] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2437] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2437] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2437] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2438 attached [pid 2438] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2437] <... clone resumed>, parent_tid=[2438], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2438 [pid 2437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2438] <... futex resumed>) = 0 [pid 2438] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2437] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2437] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2438] <... futex resumed>) = 0 [pid 2438] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2437] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2438] <... futex resumed>) = 0 [pid 2438] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2437] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2438] <... mount resumed>) = 0 [pid 2438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2437] <... futex resumed>) = 0 [pid 2437] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2438] <... futex resumed>) = 0 [pid 2438] umount2("./file0", MNT_DETACH [pid 2437] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2437] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2438] <... umount2 resumed>) = 0 [pid 2438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2438] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2437] <... mmap resumed>) = 0x7fc84e05e000 [pid 2437] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2437] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2439 attached , parent_tid=[2439], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2439 [pid 2439] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2439] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2437] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2439] <... futex resumed>) = 0 [pid 2437] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2439] umount2("./file0", MNT_DETACH) = 0 [pid 2439] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2437] <... futex resumed>) = 0 [pid 2437] exit_group(0) = ? [pid 2438] <... futex resumed>) = ? [pid 2438] +++ exited with 0 +++ [pid 2439] +++ exited with 0 +++ [pid 2437] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2437, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2440 attached , child_tidptr=0x5555564465d0) = 2440 [pid 2440] set_robust_list(0x5555564465e0, 24) = 0 [pid 2440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2440] setpgid(0, 0) = 0 [pid 2440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2440] write(3, "1000", 4) = 4 [pid 2440] close(3) = 0 [pid 2440] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2440] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2440] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2441 attached , parent_tid=[2441], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2441 [pid 2441] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2441] <... futex resumed>) = 0 [pid 2441] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2441] <... futex resumed>) = 0 [pid 2441] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2440] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2441] <... mount resumed>) = 0 [pid 2441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2441] <... futex resumed>) = 0 [pid 2441] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2440] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2441] <... mount resumed>) = 0 [pid 2441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] <... futex resumed>) = 0 [pid 2440] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2441] <... futex resumed>) = 0 [pid 2441] umount2("./file0", MNT_DETACH [pid 2440] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2441] <... umount2 resumed>) = 0 [pid 2440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2441] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] <... mmap resumed>) = 0x7fc84e05e000 [pid 2440] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2440] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2442 attached , parent_tid=[2442], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2442 [pid 2442] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2442] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2442] <... futex resumed>) = 0 [pid 2442] umount2("./file0", MNT_DETACH) = 0 [pid 2442] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2442] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2440] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2440] exit_group(0) = ? [pid 2441] <... futex resumed>) = ? [pid 2442] <... futex resumed>) = 231 [pid 2441] +++ exited with 0 +++ [pid 2442] +++ exited with 0 +++ [pid 2440] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2440, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2443 attached , child_tidptr=0x5555564465d0) = 2443 [pid 2443] set_robust_list(0x5555564465e0, 24) = 0 [pid 2443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2443] setpgid(0, 0) = 0 [pid 2443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2443] write(3, "1000", 4) = 4 [pid 2443] close(3) = 0 [pid 2443] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2443] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2443] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2444 attached , parent_tid=[2444], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2444 [pid 2443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2443] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2444] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2444] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2444] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2443] <... futex resumed>) = 0 [pid 2443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2443] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2444] <... futex resumed>) = 0 [pid 2444] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2443] <... futex resumed>) = 0 [pid 2443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2443] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2444] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2443] <... futex resumed>) = 0 [pid 2443] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2443] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2443] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2443] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2445], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2445 [pid 2444] umount2("./file0", MNT_DETACH [pid 2443] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2443] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2445 attached [pid 2445] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2445] umount2("./file0", MNT_DETACH) = 0 [pid 2445] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2443] <... futex resumed>) = 0 [pid 2445] <... futex resumed>) = 1 [pid 2445] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2444] <... umount2 resumed>) = 0 [pid 2444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2444] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2443] exit_group(0) = ? [pid 2445] <... futex resumed>) = 231 [pid 2445] +++ exited with 0 +++ [pid 2444] <... futex resumed>) = ? [pid 2444] +++ exited with 0 +++ [pid 2443] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2443, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2446 attached , child_tidptr=0x5555564465d0) = 2446 [pid 2446] set_robust_list(0x5555564465e0, 24) = 0 [pid 2446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2446] setpgid(0, 0) = 0 [pid 2446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2446] write(3, "1000", 4) = 4 [pid 2446] close(3) = 0 [pid 2446] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2446] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2446] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2447 attached , parent_tid=[2447], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2447 [pid 2447] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2447] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2447] <... futex resumed>) = 0 [pid 2447] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2447] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2446] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2447] <... futex resumed>) = 0 [pid 2446] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2447] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2446] <... futex resumed>) = 0 [pid 2446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2446] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2447] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2446] <... futex resumed>) = 0 [pid 2446] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2446] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2446] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2446] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2447] umount2("./file0", MNT_DETACH [pid 2446] <... clone resumed>, parent_tid=[2448], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2448 [pid 2446] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2446] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2448 attached [pid 2448] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2448] umount2("./file0", MNT_DETACH) = 0 [pid 2448] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2446] <... futex resumed>) = 0 [pid 2448] <... futex resumed>) = 1 [pid 2448] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2447] <... umount2 resumed>) = 0 [pid 2447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2447] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2446] exit_group(0) = ? [pid 2447] <... futex resumed>) = ? [pid 2447] +++ exited with 0 +++ [pid 2448] <... futex resumed>) = ? [pid 2448] +++ exited with 0 +++ [pid 2446] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2446, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2449 attached , child_tidptr=0x5555564465d0) = 2449 [pid 2449] set_robust_list(0x5555564465e0, 24) = 0 [pid 2449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2449] setpgid(0, 0) = 0 [pid 2449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2449] write(3, "1000", 4) = 4 [pid 2449] close(3) = 0 [pid 2449] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2449] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2449] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2450 attached , parent_tid=[2450], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2450 [pid 2449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2450] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2450] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2449] <... futex resumed>) = 0 [pid 2449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2450] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2449] <... futex resumed>) = 0 [pid 2450] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2450] <... futex resumed>) = 0 [pid 2450] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2449] <... futex resumed>) = 1 [pid 2449] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2450] <... mount resumed>) = 0 [pid 2450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2450] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2449] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2450] <... futex resumed>) = 0 [pid 2450] umount2("./file0", MNT_DETACH [pid 2449] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2450] <... umount2 resumed>) = 0 [pid 2450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2450] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2449] <... futex resumed>) = 0 [pid 2449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2449] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2449] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2451 attached [pid 2451] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2451] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2449] <... clone resumed>, parent_tid=[2451], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2451 [pid 2449] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2451] <... futex resumed>) = 0 [pid 2451] umount2("./file0", MNT_DETACH [pid 2449] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2451] <... umount2 resumed>) = 0 [pid 2451] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2451] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2449] exit_group(0 [pid 2450] <... futex resumed>) = ? [pid 2449] <... exit_group resumed>) = ? [pid 2450] +++ exited with 0 +++ [pid 2451] <... futex resumed>) = ? [pid 2451] +++ exited with 0 +++ [pid 2449] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2449, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2452 attached , child_tidptr=0x5555564465d0) = 2452 [pid 2452] set_robust_list(0x5555564465e0, 24) = 0 [pid 2452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2452] setpgid(0, 0) = 0 [pid 2452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2452] write(3, "1000", 4) = 4 [pid 2452] close(3) = 0 [pid 2452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2452] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2452] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2453 attached , parent_tid=[2453], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2453 [pid 2453] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2453] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2453] <... futex resumed>) = 0 [pid 2452] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2453] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2452] <... futex resumed>) = 0 [pid 2453] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2453] <... mount resumed>) = 0 [pid 2452] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2453] <... futex resumed>) = 0 [pid 2452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2453] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2452] <... futex resumed>) = 0 [pid 2453] <... mount resumed>) = 0 [pid 2452] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2453] <... futex resumed>) = 0 [pid 2452] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2453] umount2("./file0", MNT_DETACH [pid 2452] <... futex resumed>) = 0 [pid 2452] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2453] <... umount2 resumed>) = 0 [pid 2452] <... futex resumed>) = 0 [pid 2453] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2453] <... futex resumed>) = 0 [pid 2452] <... mmap resumed>) = 0x7fc84e05e000 [pid 2453] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2452] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2452] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2454 attached , parent_tid=[2454], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2454 [pid 2454] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2454] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2452] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2454] <... futex resumed>) = 0 [pid 2452] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2454] umount2("./file0", MNT_DETACH) = 0 [pid 2454] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2454] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2452] <... futex resumed>) = 0 [pid 2452] exit_group(0 [pid 2453] <... futex resumed>) = ? [pid 2452] <... exit_group resumed>) = ? [pid 2454] <... futex resumed>) = ? [pid 2454] +++ exited with 0 +++ [pid 2453] +++ exited with 0 +++ [pid 2452] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2452, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2455 attached , child_tidptr=0x5555564465d0) = 2455 [pid 2455] set_robust_list(0x5555564465e0, 24) = 0 [pid 2455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2455] setpgid(0, 0) = 0 [pid 2455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2455] write(3, "1000", 4) = 4 [pid 2455] close(3) = 0 [pid 2455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2455] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2455] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2456], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2456 [pid 2455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2456 attached [pid 2456] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2456] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2455] <... futex resumed>) = 0 [pid 2455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2456] <... futex resumed>) = 1 [pid 2456] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2455] <... futex resumed>) = 0 [pid 2455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2456] <... futex resumed>) = 1 [pid 2456] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2455] <... futex resumed>) = 0 [pid 2456] umount2("./file0", MNT_DETACH [pid 2455] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2455] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2455] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2457 attached , parent_tid=[2457], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2457 [pid 2455] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2455] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2457] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2457] umount2("./file0", MNT_DETACH [pid 2456] <... umount2 resumed>) = 0 [pid 2456] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2457] <... umount2 resumed>) = 0 [pid 2456] <... futex resumed>) = 0 [pid 2457] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2455] <... futex resumed>) = 0 [pid 2457] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2455] exit_group(0) = ? [pid 2457] <... futex resumed>) = ? [pid 2457] +++ exited with 0 +++ [pid 2456] +++ exited with 0 +++ [pid 2455] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2455, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2458 attached , child_tidptr=0x5555564465d0) = 2458 [pid 2458] set_robust_list(0x5555564465e0, 24) = 0 [pid 2458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2458] setpgid(0, 0) = 0 [pid 2458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2458] write(3, "1000", 4) = 4 [pid 2458] close(3) = 0 [pid 2458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2458] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2458] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2459 attached , parent_tid=[2459], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2459 [pid 2459] set_robust_list(0x7fc84e09f9e0, 24 [pid 2458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2459] <... set_robust_list resumed>) = 0 [pid 2458] <... futex resumed>) = 0 [pid 2458] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2459] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2458] <... futex resumed>) = 0 [pid 2459] <... futex resumed>) = 1 [pid 2458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2459] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2458] <... futex resumed>) = 0 [pid 2458] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2459] <... mount resumed>) = 0 [pid 2459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2458] <... futex resumed>) = 0 [pid 2459] <... futex resumed>) = 1 [pid 2458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2458] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2459] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2458] <... futex resumed>) = 0 [pid 2459] <... futex resumed>) = 1 [pid 2458] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2459] umount2("./file0", MNT_DETACH [pid 2458] <... futex resumed>) = 0 [pid 2458] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2458] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2459] <... umount2 resumed>) = 0 [pid 2458] <... mprotect resumed>) = 0 [pid 2459] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2458] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2460 attached , parent_tid=[2460], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2460 [pid 2460] set_robust_list(0x7fc84e07e9e0, 24 [pid 2458] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2460] <... set_robust_list resumed>) = 0 [pid 2458] <... futex resumed>) = 0 [pid 2460] umount2("./file0", MNT_DETACH [pid 2458] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2460] <... umount2 resumed>) = 0 [pid 2460] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2458] <... futex resumed>) = 0 [pid 2460] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2458] exit_group(0) = ? [pid 2460] <... futex resumed>) = ? [pid 2460] +++ exited with 0 +++ [pid 2459] <... futex resumed>) = ? [pid 2459] +++ exited with 0 +++ [pid 2458] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2458, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2461 ./strace-static-x86_64: Process 2461 attached [pid 2461] set_robust_list(0x5555564465e0, 24) = 0 [pid 2461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2461] setpgid(0, 0) = 0 [pid 2461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2461] write(3, "1000", 4) = 4 [pid 2461] close(3) = 0 [pid 2461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2461] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2461] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2461] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2462 attached [pid 2462] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2462] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2461] <... clone resumed>, parent_tid=[2462], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2462 [pid 2461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2462] <... futex resumed>) = 0 [pid 2462] mkdir("./file0", 000 [pid 2461] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2462] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2462] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2461] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2462] <... futex resumed>) = 0 [pid 2462] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2461] <... futex resumed>) = 0 [pid 2461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2462] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2461] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2462] <... mount resumed>) = 0 [pid 2462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2461] <... futex resumed>) = 0 [pid 2461] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2461] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2461] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2461] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2461] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2463], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2463 [pid 2461] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2461] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2462] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2463 attached [pid 2463] set_robust_list(0x7fc84e07e9e0, 24 [pid 2462] <... umount2 resumed>) = 0 [pid 2462] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2462] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2463] <... set_robust_list resumed>) = 0 [pid 2463] umount2("./file0", MNT_DETACH) = 0 [pid 2463] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2461] <... futex resumed>) = 0 [pid 2463] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2461] exit_group(0) = ? [pid 2462] <... futex resumed>) = ? [pid 2462] +++ exited with 0 +++ [pid 2463] <... futex resumed>) = ? [pid 2463] +++ exited with 0 +++ [pid 2461] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2461, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2464 ./strace-static-x86_64: Process 2464 attached [pid 2464] set_robust_list(0x5555564465e0, 24) = 0 [pid 2464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2464] setpgid(0, 0) = 0 [pid 2464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2464] write(3, "1000", 4) = 4 [pid 2464] close(3) = 0 [pid 2464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2464] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2464] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2465 attached , parent_tid=[2465], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2465 [pid 2465] set_robust_list(0x7fc84e09f9e0, 24 [pid 2464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2465] <... set_robust_list resumed>) = 0 [pid 2464] <... futex resumed>) = 0 [pid 2465] mkdir("./file0", 000 [pid 2464] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2465] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2464] <... futex resumed>) = 0 [pid 2464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2464] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2465] <... futex resumed>) = 1 [pid 2465] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2464] <... futex resumed>) = 0 [pid 2464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2464] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2465] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2464] <... futex resumed>) = 0 [pid 2464] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2464] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2464] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2464] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2465] umount2("./file0", MNT_DETACH [pid 2464] <... clone resumed>, parent_tid=[2466], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2466 [pid 2464] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2464] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2466 attached [pid 2466] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2466] umount2("./file0", MNT_DETACH [pid 2465] <... umount2 resumed>) = 0 [pid 2465] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2466] <... umount2 resumed>) = 0 [pid 2465] <... futex resumed>) = 0 [pid 2466] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2464] <... futex resumed>) = 0 [pid 2465] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2464] exit_group(0) = ? [pid 2465] <... futex resumed>) = ? [pid 2466] +++ exited with 0 +++ [pid 2465] +++ exited with 0 +++ [pid 2464] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2464, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2467 ./strace-static-x86_64: Process 2467 attached [pid 2467] set_robust_list(0x5555564465e0, 24) = 0 [pid 2467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2467] setpgid(0, 0) = 0 [pid 2467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2467] write(3, "1000", 4) = 4 [pid 2467] close(3) = 0 [pid 2467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2467] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2467] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2468 attached , parent_tid=[2468], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2468 [pid 2467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2468] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2468] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2467] <... futex resumed>) = 0 [pid 2467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2468] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2468] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2467] <... futex resumed>) = 0 [pid 2467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2468] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2467] <... futex resumed>) = 0 [pid 2468] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2467] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2467] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2467] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2468] umount2("./file0", MNT_DETACH [pid 2467] <... clone resumed>, parent_tid=[2469], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2469 [pid 2467] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2467] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2469 attached [pid 2469] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2469] umount2("./file0", MNT_DETACH [pid 2468] <... umount2 resumed>) = 0 [pid 2469] <... umount2 resumed>) = 0 [pid 2468] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2469] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2467] <... futex resumed>) = 0 [pid 2467] exit_group(0 [pid 2468] <... futex resumed>) = 0 [pid 2468] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2467] <... exit_group resumed>) = ? [pid 2468] <... futex resumed>) = ? [pid 2469] <... futex resumed>) = ? [pid 2468] +++ exited with 0 +++ [pid 2469] +++ exited with 0 +++ [pid 2467] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2467, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2470 ./strace-static-x86_64: Process 2470 attached [pid 2470] set_robust_list(0x5555564465e0, 24) = 0 [pid 2470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2470] setpgid(0, 0) = 0 [pid 2470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2470] write(3, "1000", 4) = 4 [pid 2470] close(3) = 0 [pid 2470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2470] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2470] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2471], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2471 ./strace-static-x86_64: Process 2471 attached [pid 2470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2470] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2471] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2471] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2470] <... futex resumed>) = 0 [pid 2470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2471] <... futex resumed>) = 0 [pid 2471] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2470] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2471] <... mount resumed>) = 0 [pid 2471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2470] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2471] <... futex resumed>) = 0 [pid 2471] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2470] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2471] <... mount resumed>) = 0 [pid 2471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2470] <... futex resumed>) = 0 [pid 2470] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2471] <... futex resumed>) = 0 [pid 2471] umount2("./file0", MNT_DETACH [pid 2470] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2471] <... umount2 resumed>) = 0 [pid 2471] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2471] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2470] <... futex resumed>) = 0 [pid 2470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2470] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2470] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2472 attached [pid 2472] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2472] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2470] <... clone resumed>, parent_tid=[2472], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2472 [pid 2470] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2472] <... futex resumed>) = 0 [pid 2472] umount2("./file0", MNT_DETACH [pid 2470] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2472] <... umount2 resumed>) = 0 [pid 2472] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2472] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2470] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2470] exit_group(0 [pid 2471] <... futex resumed>) = ? [pid 2470] <... exit_group resumed>) = ? [pid 2471] +++ exited with 0 +++ [pid 2472] <... futex resumed>) = ? [pid 2472] +++ exited with 0 +++ [pid 2470] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2470, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2473 ./strace-static-x86_64: Process 2473 attached [pid 2473] set_robust_list(0x5555564465e0, 24) = 0 [pid 2473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2473] setpgid(0, 0) = 0 [pid 2473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2473] write(3, "1000", 4) = 4 [pid 2473] close(3) = 0 [pid 2473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2473] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2473] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2473] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2474 attached , parent_tid=[2474], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2474 [pid 2474] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2474] <... futex resumed>) = 0 [pid 2473] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2474] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2473] <... futex resumed>) = 0 [pid 2473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2473] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2474] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2473] <... futex resumed>) = 0 [pid 2474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2474] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2473] <... futex resumed>) = 0 [pid 2474] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2473] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2474] <... mount resumed>) = 0 [pid 2474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2473] <... futex resumed>) = 0 [pid 2474] umount2("./file0", MNT_DETACH [pid 2473] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2473] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2473] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2474] <... umount2 resumed>) = 0 [pid 2474] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2473] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2474] <... futex resumed>) = 0 [pid 2474] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2473] <... mprotect resumed>) = 0 [pid 2473] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2475 attached , parent_tid=[2475], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2475 [pid 2475] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2475] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2473] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2475] <... futex resumed>) = 0 [pid 2475] umount2("./file0", MNT_DETACH [pid 2473] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2475] <... umount2 resumed>) = 0 [pid 2475] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2475] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2473] <... futex resumed>) = 0 [pid 2473] exit_group(0 [pid 2474] <... futex resumed>) = ? [pid 2473] <... exit_group resumed>) = ? [pid 2474] +++ exited with 0 +++ [pid 2475] <... futex resumed>) = ? [pid 2475] +++ exited with 0 +++ [pid 2473] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2473, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2476 attached , child_tidptr=0x5555564465d0) = 2476 [pid 2476] set_robust_list(0x5555564465e0, 24) = 0 [pid 2476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2476] setpgid(0, 0) = 0 [pid 2476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2476] write(3, "1000", 4) = 4 [pid 2476] close(3) = 0 [pid 2476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2476] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2476] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2477], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2477 ./strace-static-x86_64: Process 2477 attached [pid 2477] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2477] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2477] <... futex resumed>) = 0 [pid 2476] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2477] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2476] <... futex resumed>) = 0 [pid 2477] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2476] <... futex resumed>) = 0 [pid 2477] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2476] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2477] <... mount resumed>) = 0 [pid 2477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2476] <... futex resumed>) = 0 [pid 2477] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2477] <... mount resumed>) = 0 [pid 2476] <... futex resumed>) = 0 [pid 2477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2476] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2477] <... futex resumed>) = 0 [pid 2476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2477] umount2("./file0", MNT_DETACH [pid 2476] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2476] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2477] <... umount2 resumed>) = 0 [pid 2476] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2477] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2476] <... mprotect resumed>) = 0 [pid 2477] <... futex resumed>) = 0 [pid 2477] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2476] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2478 attached , parent_tid=[2478], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2478 [pid 2476] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2478] set_robust_list(0x7fc84e07e9e0, 24 [pid 2476] <... futex resumed>) = 0 [pid 2476] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2478] <... set_robust_list resumed>) = 0 [pid 2478] umount2("./file0", MNT_DETACH) = 0 [pid 2478] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2476] <... futex resumed>) = 0 [pid 2476] exit_group(0) = ? [pid 2477] <... futex resumed>) = ? [pid 2478] +++ exited with 0 +++ [pid 2477] +++ exited with 0 +++ [pid 2476] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2476, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2479 attached , child_tidptr=0x5555564465d0) = 2479 [pid 2479] set_robust_list(0x5555564465e0, 24) = 0 [pid 2479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2479] setpgid(0, 0) = 0 [pid 2479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2479] write(3, "1000", 4) = 4 [pid 2479] close(3) = 0 [pid 2479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2479] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2479] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2479] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2480 attached , parent_tid=[2480], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2480 [pid 2480] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2480] mkdir("./file0", 000 [pid 2479] <... futex resumed>) = 0 [pid 2479] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2480] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2479] <... futex resumed>) = 0 [pid 2480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2480] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2479] <... futex resumed>) = 0 [pid 2480] <... mount resumed>) = 0 [pid 2480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2479] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2480] <... futex resumed>) = 0 [pid 2479] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2480] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2479] <... futex resumed>) = 0 [pid 2479] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2480] <... futex resumed>) = 0 [pid 2479] <... futex resumed>) = 1 [pid 2480] umount2("./file0", MNT_DETACH [pid 2479] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2480] <... umount2 resumed>) = 0 [pid 2479] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2480] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2479] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2480] <... futex resumed>) = 0 [pid 2479] <... mprotect resumed>) = 0 [pid 2480] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2479] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2481 attached , parent_tid=[2481], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2481 [pid 2481] set_robust_list(0x7fc84e07e9e0, 24 [pid 2479] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2481] <... set_robust_list resumed>) = 0 [pid 2479] <... futex resumed>) = 0 [pid 2481] umount2("./file0", MNT_DETACH [pid 2479] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2481] <... umount2 resumed>) = 0 [pid 2481] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2479] <... futex resumed>) = 0 [pid 2481] <... futex resumed>) = 1 [pid 2479] exit_group(0 [pid 2481] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2479] <... exit_group resumed>) = ? [pid 2480] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2481] <... futex resumed>) = ? [pid 2480] +++ exited with 0 +++ [pid 2481] +++ exited with 0 +++ [pid 2479] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2479, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2482 ./strace-static-x86_64: Process 2482 attached [pid 2482] set_robust_list(0x5555564465e0, 24) = 0 [pid 2482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2482] setpgid(0, 0) = 0 [pid 2482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2482] write(3, "1000", 4) = 4 [pid 2482] close(3) = 0 [pid 2482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2482] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2482] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2483 attached , parent_tid=[2483], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2483 [pid 2483] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2483] <... futex resumed>) = 0 [pid 2482] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2483] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2482] <... futex resumed>) = 0 [pid 2482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2483] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2482] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2483] <... mount resumed>) = 0 [pid 2483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2482] <... futex resumed>) = 0 [pid 2482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2483] <... futex resumed>) = 0 [pid 2483] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2482] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2483] <... mount resumed>) = 0 [pid 2483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2482] <... futex resumed>) = 0 [pid 2482] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2483] <... futex resumed>) = 0 [pid 2482] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2483] umount2("./file0", MNT_DETACH [pid 2482] <... futex resumed>) = 0 [pid 2482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2483] <... umount2 resumed>) = 0 [pid 2482] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2483] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2483] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2482] <... mprotect resumed>) = 0 [pid 2482] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2484], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2484 ./strace-static-x86_64: Process 2484 attached [pid 2482] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2484] set_robust_list(0x7fc84e07e9e0, 24 [pid 2482] <... futex resumed>) = 0 [pid 2484] <... set_robust_list resumed>) = 0 [pid 2482] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2484] umount2("./file0", MNT_DETACH) = 0 [pid 2484] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2482] <... futex resumed>) = 0 [pid 2484] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2482] exit_group(0 [pid 2483] <... futex resumed>) = ? [pid 2482] <... exit_group resumed>) = ? [pid 2484] <... futex resumed>) = ? [pid 2483] +++ exited with 0 +++ [pid 2484] +++ exited with 0 +++ [pid 2482] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2482, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2485 attached , child_tidptr=0x5555564465d0) = 2485 [pid 2485] set_robust_list(0x5555564465e0, 24) = 0 [pid 2485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2485] setpgid(0, 0) = 0 [pid 2485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2485] write(3, "1000", 4) = 4 [pid 2485] close(3) = 0 [pid 2485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2485] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2485] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2486], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2486 [pid 2485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2485] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2486 attached [pid 2486] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2486] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2485] <... futex resumed>) = 0 [pid 2485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2485] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2486] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2486] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2485] <... futex resumed>) = 0 [pid 2485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2485] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2486] <... futex resumed>) = 0 [pid 2486] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2485] <... futex resumed>) = 0 [pid 2486] umount2("./file0", MNT_DETACH [pid 2485] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2485] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2486] <... umount2 resumed>) = 0 [pid 2485] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2486] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2485] <... mprotect resumed>) = 0 [pid 2486] <... futex resumed>) = 0 [pid 2485] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2486] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2487 attached [pid 2487] set_robust_list(0x7fc84e07e9e0, 24 [pid 2485] <... clone resumed>, parent_tid=[2487], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2487 [pid 2487] <... set_robust_list resumed>) = 0 [pid 2485] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2487] umount2("./file0", MNT_DETACH [pid 2485] <... futex resumed>) = 0 [pid 2485] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2487] <... umount2 resumed>) = 0 [pid 2487] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2485] <... futex resumed>) = 0 [pid 2485] exit_group(0) = ? [pid 2486] <... futex resumed>) = ? [pid 2486] +++ exited with 0 +++ [pid 2487] +++ exited with 0 +++ [pid 2485] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2485, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2488 ./strace-static-x86_64: Process 2488 attached [pid 2488] set_robust_list(0x5555564465e0, 24) = 0 [pid 2488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2488] setpgid(0, 0) = 0 [pid 2488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2488] write(3, "1000", 4) = 4 [pid 2488] close(3) = 0 [pid 2488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2488] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2488] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2489 attached , parent_tid=[2489], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2489 [pid 2489] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2489] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2489] <... futex resumed>) = 0 [pid 2489] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2489] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2488] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2489] <... futex resumed>) = 0 [pid 2489] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2488] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2489] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2489] <... futex resumed>) = 0 [pid 2489] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2488] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2489] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2488] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2489] <... futex resumed>) = 0 [pid 2488] <... futex resumed>) = 1 [pid 2489] umount2("./file0", MNT_DETACH [pid 2488] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2488] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2489] <... umount2 resumed>) = 0 [pid 2489] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2488] <... mprotect resumed>) = 0 [pid 2489] <... futex resumed>) = 0 [pid 2488] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2489] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2490 attached [pid 2488] <... clone resumed>, parent_tid=[2490], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2490 [pid 2490] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2490] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2488] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2490] <... futex resumed>) = 0 [pid 2490] umount2("./file0", MNT_DETACH [pid 2488] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2490] <... umount2 resumed>) = 0 [pid 2490] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2490] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2488] exit_group(0 [pid 2489] <... futex resumed>) = ? [pid 2488] <... exit_group resumed>) = ? [pid 2490] <... futex resumed>) = ? [pid 2490] +++ exited with 0 +++ [pid 2489] +++ exited with 0 +++ [pid 2488] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2488, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2491 ./strace-static-x86_64: Process 2491 attached [pid 2491] set_robust_list(0x5555564465e0, 24) = 0 [pid 2491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2491] setpgid(0, 0) = 0 [pid 2491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2491] write(3, "1000", 4) = 4 [pid 2491] close(3) = 0 [pid 2491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2491] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2491] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2491] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2492 attached , parent_tid=[2492], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2492 [pid 2491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2492] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2492] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2491] <... futex resumed>) = 0 [pid 2492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2491] <... futex resumed>) = 0 [pid 2492] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2492] <... mount resumed>) = 0 [pid 2492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2491] <... futex resumed>) = 0 [pid 2492] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2491] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2492] <... mount resumed>) = 0 [pid 2492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2491] <... futex resumed>) = 0 [pid 2491] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2491] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2491] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2491] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2491] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2493 attached [pid 2492] umount2("./file0", MNT_DETACH [pid 2491] <... clone resumed>, parent_tid=[2493], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2493 [pid 2491] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2491] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2493] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2493] umount2("./file0", MNT_DETACH) = 0 [pid 2492] <... umount2 resumed>) = 0 [pid 2493] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2491] <... futex resumed>) = 0 [pid 2493] <... futex resumed>) = 1 [pid 2493] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2492] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2492] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2491] exit_group(0) = ? [pid 2493] <... futex resumed>) = ? [pid 2492] <... futex resumed>) = 231 [pid 2493] +++ exited with 0 +++ [pid 2492] +++ exited with 0 +++ [pid 2491] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2491, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2494 ./strace-static-x86_64: Process 2494 attached [pid 2494] set_robust_list(0x5555564465e0, 24) = 0 [pid 2494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2494] setpgid(0, 0) = 0 [pid 2494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2494] write(3, "1000", 4) = 4 [pid 2494] close(3) = 0 [pid 2494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2494] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2494] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2495 attached , parent_tid=[2495], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2495 [pid 2494] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2494] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2495] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2495] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2495] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2494] <... futex resumed>) = 0 [pid 2495] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2494] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2495] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2495] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2494] <... futex resumed>) = 0 [pid 2495] <... mount resumed>) = 0 [pid 2494] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2495] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2494] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2494] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2494] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2495] <... futex resumed>) = 1 [pid 2494] <... futex resumed>) = 0 [pid 2494] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2495] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2495] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2494] <... futex resumed>) = 0 [pid 2494] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2494] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2495] umount2("./file0", MNT_DETACH [pid 2494] <... mmap resumed>) = 0x7fc84e05e000 [pid 2494] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2494] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2496], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2496 [pid 2494] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2494] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2496 attached [pid 2496] set_robust_list(0x7fc84e07e9e0, 24 [pid 2495] <... umount2 resumed>) = 0 [pid 2496] <... set_robust_list resumed>) = 0 [pid 2496] umount2("./file0", MNT_DETACH [pid 2495] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2495] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2496] <... umount2 resumed>) = 0 [pid 2496] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2494] <... futex resumed>) = 0 [pid 2494] exit_group(0) = ? [pid 2495] <... futex resumed>) = ? [pid 2496] <... futex resumed>) = ? [pid 2496] +++ exited with 0 +++ [pid 2495] +++ exited with 0 +++ [pid 2494] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2494, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2497 ./strace-static-x86_64: Process 2497 attached [pid 2497] set_robust_list(0x5555564465e0, 24) = 0 [pid 2497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2497] setpgid(0, 0) = 0 [pid 2497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2497] write(3, "1000", 4) = 4 [pid 2497] close(3) = 0 [pid 2497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2497] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2497] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2497] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2498 attached , parent_tid=[2498], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2498 [pid 2498] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2498] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2497] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2498] <... futex resumed>) = 0 [pid 2497] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2498] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2498] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2497] <... futex resumed>) = 0 [pid 2497] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2497] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2498] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2498] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2497] <... futex resumed>) = 0 [pid 2497] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2497] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2498] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2498] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2497] <... futex resumed>) = 0 [pid 2498] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2497] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2498] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2497] <... futex resumed>) = 0 [pid 2498] umount2("./file0", MNT_DETACH [pid 2497] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2498] <... umount2 resumed>) = 0 [pid 2497] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2498] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2497] <... mmap resumed>) = 0x7fc84e05e000 [pid 2498] <... futex resumed>) = 0 [pid 2497] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2498] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2497] <... mprotect resumed>) = 0 [pid 2497] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2499 attached , parent_tid=[2499], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2499 [pid 2499] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2499] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2497] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2499] <... futex resumed>) = 0 [pid 2499] umount2("./file0", MNT_DETACH [pid 2497] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2499] <... umount2 resumed>) = 0 [pid 2499] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2499] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2497] <... futex resumed>) = 0 [pid 2497] exit_group(0) = ? [pid 2498] <... futex resumed>) = ? [pid 2499] <... futex resumed>) = ? [pid 2498] +++ exited with 0 +++ [pid 2499] +++ exited with 0 +++ [pid 2497] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2497, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2500 attached , child_tidptr=0x5555564465d0) = 2500 [pid 2500] set_robust_list(0x5555564465e0, 24) = 0 [pid 2500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2500] setpgid(0, 0) = 0 [pid 2500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2500] write(3, "1000", 4) = 4 [pid 2500] close(3) = 0 [pid 2500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2500] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2500] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2501 attached , parent_tid=[2501], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2501 [pid 2501] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2501] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2500] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2501] <... futex resumed>) = 0 [pid 2501] mkdir("./file0", 000 [pid 2500] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2501] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2501] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2500] <... futex resumed>) = 0 [pid 2500] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2500] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2501] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2501] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2500] <... futex resumed>) = 0 [pid 2500] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2500] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2501] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2501] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2500] <... futex resumed>) = 0 [pid 2500] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2500] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2500] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2500] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2501] umount2("./file0", MNT_DETACH [pid 2500] <... clone resumed>, parent_tid=[2502], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2502 [pid 2500] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2501] <... umount2 resumed>) = 0 [pid 2500] <... futex resumed>) = 0 [pid 2500] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2502 attached [pid 2502] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2502] umount2("./file0", MNT_DETACH [pid 2501] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2502] <... umount2 resumed>) = 0 [pid 2501] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2502] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2500] <... futex resumed>) = 0 [pid 2502] <... futex resumed>) = 1 [pid 2500] exit_group(0 [pid 2502] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 2500] <... exit_group resumed>) = ? [pid 2501] <... futex resumed>) = ? [pid 2501] +++ exited with 0 +++ [pid 2502] +++ exited with 0 +++ [pid 2500] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2500, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2503 attached , child_tidptr=0x5555564465d0) = 2503 [pid 2503] set_robust_list(0x5555564465e0, 24) = 0 [pid 2503] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2503] setpgid(0, 0) = 0 [pid 2503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2503] write(3, "1000", 4) = 4 [pid 2503] close(3) = 0 [pid 2503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2503] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2503] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2503] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2504 attached , parent_tid=[2504], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2504 [pid 2504] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2504] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2503] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2504] <... futex resumed>) = 0 [pid 2503] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2504] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2504] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2503] <... futex resumed>) = 0 [pid 2504] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2503] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2503] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2504] <... mount resumed>) = 0 [pid 2504] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2503] <... futex resumed>) = 0 [pid 2503] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2503] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2504] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2504] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2503] <... futex resumed>) = 0 [pid 2503] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2503] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2503] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2503] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2503] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2505], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2505 [pid 2503] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2503] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2505 attached [pid 2505] set_robust_list(0x7fc84e07e9e0, 24 [pid 2504] umount2("./file0", MNT_DETACH [pid 2505] <... set_robust_list resumed>) = 0 [pid 2505] umount2("./file0", MNT_DETACH) = 0 [pid 2505] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2504] <... umount2 resumed>) = 0 [pid 2503] <... futex resumed>) = 0 [pid 2505] <... futex resumed>) = 1 [pid 2504] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2505] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2504] <... futex resumed>) = 0 [pid 2504] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2503] exit_group(0) = ? [pid 2505] <... futex resumed>) = ? [pid 2504] <... futex resumed>) = ? [pid 2505] +++ exited with 0 +++ [pid 2504] +++ exited with 0 +++ [pid 2503] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2503, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2506 attached , child_tidptr=0x5555564465d0) = 2506 [pid 2506] set_robust_list(0x5555564465e0, 24) = 0 [pid 2506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2506] setpgid(0, 0) = 0 [pid 2506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2506] write(3, "1000", 4) = 4 [pid 2506] close(3) = 0 [pid 2506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2506] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2506] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2506] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2507 attached , parent_tid=[2507], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2507 [pid 2507] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2507] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2506] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2507] <... futex resumed>) = 0 [pid 2507] mkdir("./file0", 000 [pid 2506] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2507] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2507] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2507] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2506] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2506] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2507] <... futex resumed>) = 0 [pid 2507] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2506] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2507] <... mount resumed>) = 0 [pid 2507] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2506] <... futex resumed>) = 0 [pid 2506] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2506] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2507] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2507] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2506] <... futex resumed>) = 0 [pid 2506] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2506] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2506] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2506] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2506] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2507] umount2("./file0", MNT_DETACH [pid 2506] <... clone resumed>, parent_tid=[2508], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2508 [pid 2506] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2506] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2508 attached [pid 2508] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2508] umount2("./file0", MNT_DETACH) = 0 [pid 2507] <... umount2 resumed>) = 0 [pid 2507] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2507] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2508] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2506] <... futex resumed>) = 0 [pid 2506] exit_group(0) = ? [pid 2507] <... futex resumed>) = ? [pid 2507] +++ exited with 0 +++ [pid 2508] +++ exited with 0 +++ [pid 2506] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2506, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2509 attached , child_tidptr=0x5555564465d0) = 2509 [pid 2509] set_robust_list(0x5555564465e0, 24) = 0 [pid 2509] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2509] setpgid(0, 0) = 0 [pid 2509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2509] write(3, "1000", 4) = 4 [pid 2509] close(3) = 0 [pid 2509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2509] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2509] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2510], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2510 ./strace-static-x86_64: Process 2510 attached [pid 2509] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2510] set_robust_list(0x7fc84e09f9e0, 24 [pid 2509] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2510] <... set_robust_list resumed>) = 0 [pid 2510] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2510] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2510] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2509] <... futex resumed>) = 0 [pid 2509] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2510] <... futex resumed>) = 0 [pid 2509] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2510] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2510] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2510] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2509] <... futex resumed>) = 0 [pid 2509] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2510] <... futex resumed>) = 0 [pid 2509] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2510] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2510] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2510] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2509] <... futex resumed>) = 0 [pid 2509] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2510] <... futex resumed>) = 0 [pid 2509] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2510] umount2("./file0", MNT_DETACH [pid 2509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2509] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2510] <... umount2 resumed>) = 0 [pid 2509] <... mprotect resumed>) = 0 [pid 2510] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2509] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2510] <... futex resumed>) = 0 [pid 2510] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2511 attached [pid 2509] <... clone resumed>, parent_tid=[2511], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2511 [pid 2511] set_robust_list(0x7fc84e07e9e0, 24 [pid 2509] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2511] <... set_robust_list resumed>) = 0 [pid 2509] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2511] umount2("./file0", MNT_DETACH) = 0 [pid 2511] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2509] <... futex resumed>) = 0 [pid 2511] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2509] exit_group(0) = ? [pid 2510] <... futex resumed>) = ? [pid 2510] +++ exited with 0 +++ [pid 2511] <... futex resumed>) = ? [pid 2511] +++ exited with 0 +++ [pid 2509] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2509, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2512 attached , child_tidptr=0x5555564465d0) = 2512 [pid 2512] set_robust_list(0x5555564465e0, 24) = 0 [pid 2512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2512] setpgid(0, 0) = 0 [pid 2512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2512] write(3, "1000", 4) = 4 [pid 2512] close(3) = 0 [pid 2512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2512] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2512] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2512] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2513 attached , parent_tid=[2513], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2513 [pid 2513] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2513] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2512] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2513] <... futex resumed>) = 0 [pid 2512] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2513] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2513] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2512] <... futex resumed>) = 0 [pid 2512] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2512] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2513] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2513] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2512] <... futex resumed>) = 0 [pid 2513] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2512] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2512] <... futex resumed>) = 0 [pid 2513] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2512] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2513] <... mount resumed>) = 0 [pid 2513] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2512] <... futex resumed>) = 0 [pid 2512] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2513] umount2("./file0", MNT_DETACH [pid 2512] <... futex resumed>) = 0 [pid 2512] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2513] <... umount2 resumed>) = 0 [pid 2512] <... futex resumed>) = 0 [pid 2513] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2512] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2513] <... futex resumed>) = 0 [pid 2512] <... mmap resumed>) = 0x7fc84e05e000 [pid 2513] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2512] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2512] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2514 attached , parent_tid=[2514], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2514 [pid 2514] set_robust_list(0x7fc84e07e9e0, 24 [pid 2512] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2514] <... set_robust_list resumed>) = 0 [pid 2512] <... futex resumed>) = 0 [pid 2514] umount2("./file0", MNT_DETACH [pid 2512] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2514] <... umount2 resumed>) = 0 [pid 2514] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2512] <... futex resumed>) = 0 [pid 2514] <... futex resumed>) = 1 [pid 2512] exit_group(0 [pid 2514] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2512] <... exit_group resumed>) = ? [pid 2513] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2514] <... futex resumed>) = ? [pid 2513] +++ exited with 0 +++ [pid 2514] +++ exited with 0 +++ [pid 2512] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2512, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2515 ./strace-static-x86_64: Process 2515 attached [pid 2515] set_robust_list(0x5555564465e0, 24) = 0 [pid 2515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2515] setpgid(0, 0) = 0 [pid 2515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2515] write(3, "1000", 4) = 4 [pid 2515] close(3) = 0 [pid 2515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2515] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2515] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2515] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2516 attached [pid 2516] set_robust_list(0x7fc84e09f9e0, 24 [pid 2515] <... clone resumed>, parent_tid=[2516], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2516 [pid 2516] <... set_robust_list resumed>) = 0 [pid 2516] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2515] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2516] <... futex resumed>) = 0 [pid 2515] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2516] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2516] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2515] <... futex resumed>) = 0 [pid 2516] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2515] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2516] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2515] <... futex resumed>) = 0 [pid 2516] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2515] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2516] <... mount resumed>) = 0 [pid 2516] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2515] <... futex resumed>) = 0 [pid 2515] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2515] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2516] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2516] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2515] <... futex resumed>) = 0 [pid 2515] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2515] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2516] umount2("./file0", MNT_DETACH [pid 2515] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2516] <... umount2 resumed>) = 0 [pid 2515] <... mmap resumed>) = 0x7fc84e05e000 [pid 2515] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2515] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2516] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2515] <... clone resumed>, parent_tid=[2517], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2517 [pid 2515] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2515] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2517 attached [pid 2517] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2517] umount2("./file0", MNT_DETACH [pid 2516] <... futex resumed>) = 0 [pid 2516] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2517] <... umount2 resumed>) = 0 [pid 2517] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2515] <... futex resumed>) = 0 [pid 2515] exit_group(0) = ? [pid 2516] <... futex resumed>) = ? [pid 2516] +++ exited with 0 +++ [pid 2517] +++ exited with 0 +++ [pid 2515] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2515, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2518 ./strace-static-x86_64: Process 2518 attached [pid 2518] set_robust_list(0x5555564465e0, 24) = 0 [pid 2518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2518] setpgid(0, 0) = 0 [pid 2518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2518] write(3, "1000", 4) = 4 [pid 2518] close(3) = 0 [pid 2518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2518] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2518] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2519 attached , parent_tid=[2519], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2519 [pid 2519] set_robust_list(0x7fc84e09f9e0, 24 [pid 2518] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2518] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2519] <... set_robust_list resumed>) = 0 [pid 2519] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2519] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2518] <... futex resumed>) = 0 [pid 2519] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2518] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2519] <... futex resumed>) = 0 [pid 2519] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2518] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2519] <... mount resumed>) = 0 [pid 2519] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2519] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2518] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2519] <... futex resumed>) = 0 [pid 2519] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2518] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2519] <... mount resumed>) = 0 [pid 2519] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2519] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2518] <... futex resumed>) = 0 [pid 2518] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2519] <... futex resumed>) = 0 [pid 2519] umount2("./file0", MNT_DETACH [pid 2518] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2519] <... umount2 resumed>) = 0 [pid 2518] <... futex resumed>) = 0 [pid 2519] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2519] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2518] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2518] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2520 attached , parent_tid=[2520], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2520 [pid 2520] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2520] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2518] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2520] <... futex resumed>) = 0 [pid 2518] <... futex resumed>) = 1 [pid 2520] umount2("./file0", MNT_DETACH [pid 2518] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2520] <... umount2 resumed>) = 0 [pid 2520] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2518] <... futex resumed>) = 0 [pid 2518] exit_group(0 [pid 2519] <... futex resumed>) = ? [pid 2519] +++ exited with 0 +++ [pid 2518] <... exit_group resumed>) = ? [pid 2520] +++ exited with 0 +++ [pid 2518] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2518, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2521 ./strace-static-x86_64: Process 2521 attached [pid 2521] set_robust_list(0x5555564465e0, 24) = 0 [pid 2521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2521] setpgid(0, 0) = 0 [pid 2521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2521] write(3, "1000", 4) = 4 [pid 2521] close(3) = 0 [pid 2521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2521] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2521] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2522], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2522 ./strace-static-x86_64: Process 2522 attached [pid 2521] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2522] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2522] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2522] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2521] <... futex resumed>) = 0 [pid 2521] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2522] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2522] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2521] <... futex resumed>) = 0 [pid 2521] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2522] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2522] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2521] <... futex resumed>) = 0 [pid 2521] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2522] umount2("./file0", MNT_DETACH [pid 2521] <... mmap resumed>) = 0x7fc84e05e000 [pid 2521] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2521] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2522] <... umount2 resumed>) = 0 [pid 2522] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2522] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2523 attached [pid 2521] <... clone resumed>, parent_tid=[2523], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2523 [pid 2521] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2521] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2523] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2523] umount2("./file0", MNT_DETACH) = 0 [pid 2523] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2521] <... futex resumed>) = 0 [pid 2521] exit_group(0) = ? [pid 2522] <... futex resumed>) = ? [pid 2522] +++ exited with 0 +++ [pid 2523] +++ exited with 0 +++ [pid 2521] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2521, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2524 attached , child_tidptr=0x5555564465d0) = 2524 [pid 2524] set_robust_list(0x5555564465e0, 24) = 0 [pid 2524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2524] setpgid(0, 0) = 0 [pid 2524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2524] write(3, "1000", 4) = 4 [pid 2524] close(3) = 0 [pid 2524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2524] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2524] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2525], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2525 [pid 2524] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2525 attached [pid 2525] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2525] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2525] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2524] <... futex resumed>) = 0 [pid 2524] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2525] <... futex resumed>) = 1 [pid 2525] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2525] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2524] <... futex resumed>) = 0 [pid 2524] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2525] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2525] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2524] <... futex resumed>) = 0 [pid 2524] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2524] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2524] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2526], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2526 [pid 2524] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2524] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2526 attached [pid 2526] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2526] umount2("./file0", MNT_DETACH [pid 2525] umount2("./file0", MNT_DETACH [pid 2526] <... umount2 resumed>) = 0 [pid 2526] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2524] <... futex resumed>) = 0 [pid 2526] <... futex resumed>) = 1 [pid 2526] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2525] <... umount2 resumed>) = 0 [pid 2525] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2525] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2524] exit_group(0) = ? [pid 2525] <... futex resumed>) = ? [pid 2525] +++ exited with 0 +++ [pid 2526] <... futex resumed>) = ? [pid 2526] +++ exited with 0 +++ [pid 2524] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2524, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2527 ./strace-static-x86_64: Process 2527 attached [pid 2527] set_robust_list(0x5555564465e0, 24) = 0 [pid 2527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2527] setpgid(0, 0) = 0 [pid 2527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2527] write(3, "1000", 4) = 4 [pid 2527] close(3) = 0 [pid 2527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2527] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2527] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2527] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2528 attached , parent_tid=[2528], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2528 [pid 2528] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2528] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2527] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2528] <... futex resumed>) = 0 [pid 2528] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2528] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2527] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2528] <... futex resumed>) = 0 [pid 2528] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2527] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2527] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2528] <... futex resumed>) = 0 [pid 2528] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2528] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2527] <... futex resumed>) = 0 [pid 2527] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2527] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2528] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2528] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2527] <... futex resumed>) = 0 [pid 2527] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2527] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2527] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2527] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2527] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2528] umount2("./file0", MNT_DETACH [pid 2527] <... clone resumed>, parent_tid=[2529], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2529 [pid 2528] <... umount2 resumed>) = 0 [pid 2527] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2527] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2529 attached [pid 2529] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2529] umount2("./file0", MNT_DETACH [pid 2528] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2529] <... umount2 resumed>) = 0 [pid 2528] <... futex resumed>) = 0 [pid 2529] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2528] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2527] <... futex resumed>) = 0 [pid 2527] exit_group(0 [pid 2528] <... futex resumed>) = ? [pid 2527] <... exit_group resumed>) = ? [pid 2528] +++ exited with 0 +++ [pid 2529] <... futex resumed>) = ? [pid 2529] +++ exited with 0 +++ [pid 2527] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2527, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2530 ./strace-static-x86_64: Process 2530 attached [pid 2530] set_robust_list(0x5555564465e0, 24) = 0 [pid 2530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2530] setpgid(0, 0) = 0 [pid 2530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2530] write(3, "1000", 4) = 4 [pid 2530] close(3) = 0 [pid 2530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2530] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2530] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2531 attached , parent_tid=[2531], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2531 [pid 2531] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2531] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2531] <... futex resumed>) = 0 [pid 2531] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2531] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2531] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2530] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2531] <... futex resumed>) = 0 [pid 2531] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2531] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2531] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2530] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2531] <... futex resumed>) = 0 [pid 2531] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2530] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2531] <... mount resumed>) = 0 [pid 2531] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2531] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2530] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2531] <... futex resumed>) = 0 [pid 2531] umount2("./file0", MNT_DETACH [pid 2530] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2531] <... umount2 resumed>) = 0 [pid 2530] <... futex resumed>) = 0 [pid 2531] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2531] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2530] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2530] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2532 attached , parent_tid=[2532], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2532 [pid 2532] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2532] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2532] <... futex resumed>) = 0 [pid 2532] umount2("./file0", MNT_DETACH) = 0 [pid 2532] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2532] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2530] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2530] exit_group(0 [pid 2531] <... futex resumed>) = ? [pid 2530] <... exit_group resumed>) = ? [pid 2531] +++ exited with 0 +++ [pid 2532] <... futex resumed>) = ? [pid 2532] +++ exited with 0 +++ [pid 2530] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2530, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2533 ./strace-static-x86_64: Process 2533 attached [pid 2533] set_robust_list(0x5555564465e0, 24) = 0 [pid 2533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2533] setpgid(0, 0) = 0 [pid 2533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2533] write(3, "1000", 4) = 4 [pid 2533] close(3) = 0 [pid 2533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2533] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2533] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2533] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2534], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2534 [pid 2533] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2533] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2534 attached [pid 2534] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2534] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2534] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2533] <... futex resumed>) = 0 [pid 2533] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2533] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2534] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2534] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2533] <... futex resumed>) = 0 [pid 2533] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2533] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2534] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2534] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2533] <... futex resumed>) = 0 [pid 2533] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2534] umount2("./file0", MNT_DETACH [pid 2533] <... futex resumed>) = 0 [pid 2533] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2533] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2533] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2533] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2535], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2535 [pid 2533] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2534] <... umount2 resumed>) = 0 [pid 2533] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2535 attached [pid 2535] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2535] umount2("./file0", MNT_DETACH) = 0 [pid 2534] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2535] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2533] <... futex resumed>) = 0 [pid 2533] exit_group(0 [pid 2534] <... futex resumed>) = 0 [pid 2533] <... exit_group resumed>) = ? [pid 2535] <... futex resumed>) = ? [pid 2535] +++ exited with 0 +++ [pid 2534] +++ exited with 0 +++ [pid 2533] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2533, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2536 ./strace-static-x86_64: Process 2536 attached [pid 2536] set_robust_list(0x5555564465e0, 24) = 0 [pid 2536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2536] setpgid(0, 0) = 0 [pid 2536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2536] write(3, "1000", 4) = 4 [pid 2536] close(3) = 0 [pid 2536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2536] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2536] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2536] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2537], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2537 ./strace-static-x86_64: Process 2537 attached [pid 2537] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2537] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2536] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2537] <... futex resumed>) = 0 [pid 2537] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2537] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2537] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2536] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2536] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2537] <... futex resumed>) = 0 [pid 2536] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2537] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2537] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2537] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2536] <... futex resumed>) = 0 [pid 2536] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2537] <... futex resumed>) = 0 [pid 2536] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2537] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2537] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2536] <... futex resumed>) = 0 [pid 2537] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2536] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2536] <... futex resumed>) = 0 [pid 2537] umount2("./file0", MNT_DETACH [pid 2536] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2537] <... umount2 resumed>) = 0 [pid 2536] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2537] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2536] <... mmap resumed>) = 0x7fc84e05e000 [pid 2537] <... futex resumed>) = 0 [pid 2536] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2537] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2536] <... mprotect resumed>) = 0 [pid 2536] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2538], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2538 [pid 2536] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2536] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2538 attached [pid 2538] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2538] umount2("./file0", MNT_DETACH) = 0 [pid 2538] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2536] <... futex resumed>) = 0 [pid 2536] exit_group(0) = ? [pid 2537] <... futex resumed>) = ? [pid 2537] +++ exited with 0 +++ [pid 2538] +++ exited with 0 +++ [pid 2536] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2536, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2539 attached [pid 2539] set_robust_list(0x5555564465e0, 24 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 2539 [pid 2539] <... set_robust_list resumed>) = 0 [pid 2539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2539] setpgid(0, 0) = 0 [pid 2539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2539] write(3, "1000", 4) = 4 [pid 2539] close(3) = 0 [pid 2539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2539] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2539] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2539] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2540 attached , parent_tid=[2540], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2540 [pid 2539] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2539] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2540] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2540] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2540] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2539] <... futex resumed>) = 0 [pid 2539] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2539] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2540] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2540] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2539] <... futex resumed>) = 0 [pid 2539] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2539] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2540] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2540] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2539] <... futex resumed>) = 0 [pid 2539] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2539] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2539] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2539] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2539] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2541 attached , parent_tid=[2541], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2541 [pid 2541] set_robust_list(0x7fc84e07e9e0, 24 [pid 2539] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2541] <... set_robust_list resumed>) = 0 [pid 2539] <... futex resumed>) = 0 [pid 2541] umount2("./file0", MNT_DETACH [pid 2539] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2540] umount2("./file0", MNT_DETACH) = 0 [pid 2540] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2541] <... umount2 resumed>) = 0 [pid 2541] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2539] <... futex resumed>) = 0 [pid 2541] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2539] exit_group(0) = ? [pid 2541] <... futex resumed>) = ? [pid 2541] +++ exited with 0 +++ [pid 2540] <... futex resumed>) = ? [pid 2540] +++ exited with 0 +++ [pid 2539] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2539, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2542 ./strace-static-x86_64: Process 2542 attached [pid 2542] set_robust_list(0x5555564465e0, 24) = 0 [pid 2542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2542] setpgid(0, 0) = 0 [pid 2542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2542] write(3, "1000", 4) = 4 [pid 2542] close(3) = 0 [pid 2542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2542] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2542] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2543 attached , parent_tid=[2543], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2543 [pid 2543] set_robust_list(0x7fc84e09f9e0, 24 [pid 2542] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2543] <... set_robust_list resumed>) = 0 [pid 2542] <... futex resumed>) = 0 [pid 2543] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2543] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2543] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2542] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2542] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2543] <... futex resumed>) = 0 [pid 2542] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2543] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2543] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2542] <... futex resumed>) = 0 [pid 2542] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2542] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2543] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2543] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2542] <... futex resumed>) = 0 [pid 2542] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2542] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2542] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2542] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2543] umount2("./file0", MNT_DETACH [pid 2542] <... clone resumed>, parent_tid=[2544], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2544 [pid 2542] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2542] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2544 attached [pid 2544] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2544] umount2("./file0", MNT_DETACH) = 0 [pid 2544] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2542] <... futex resumed>) = 0 [pid 2544] <... futex resumed>) = 1 [pid 2544] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2543] <... umount2 resumed>) = 0 [pid 2543] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2543] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2542] exit_group(0) = ? [pid 2543] <... futex resumed>) = 231 [pid 2544] <... futex resumed>) = ? [pid 2543] +++ exited with 0 +++ [pid 2544] +++ exited with 0 +++ [pid 2542] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2542, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2545 ./strace-static-x86_64: Process 2545 attached [pid 2545] set_robust_list(0x5555564465e0, 24) = 0 [pid 2545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2545] setpgid(0, 0) = 0 [pid 2545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2545] write(3, "1000", 4) = 4 [pid 2545] close(3) = 0 [pid 2545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2545] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2545] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2546], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2546 [pid 2545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2545] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2546 attached [pid 2546] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2546] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2545] <... futex resumed>) = 0 [pid 2545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2545] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2546] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2546] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2545] <... futex resumed>) = 0 [pid 2545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2545] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2546] <... futex resumed>) = 0 [pid 2546] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2545] <... futex resumed>) = 0 [pid 2546] umount2("./file0", MNT_DETACH [pid 2545] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2545] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2546] <... umount2 resumed>) = 0 [pid 2546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2545] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2546] <... futex resumed>) = 0 [pid 2545] <... mprotect resumed>) = 0 [pid 2545] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2546] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2547 attached [pid 2545] <... clone resumed>, parent_tid=[2547], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2547 [pid 2547] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2547] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2545] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2547] <... futex resumed>) = 0 [pid 2547] umount2("./file0", MNT_DETACH) = 0 [pid 2547] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2547] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2545] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2545] exit_group(0) = ? [pid 2546] <... futex resumed>) = ? [pid 2547] <... futex resumed>) = ? [pid 2547] +++ exited with 0 +++ [pid 2546] +++ exited with 0 +++ [pid 2545] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2545, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2548 attached , child_tidptr=0x5555564465d0) = 2548 [pid 2548] set_robust_list(0x5555564465e0, 24) = 0 [pid 2548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2548] setpgid(0, 0) = 0 [pid 2548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2548] write(3, "1000", 4) = 4 [pid 2548] close(3) = 0 [pid 2548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2548] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2548] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2549 attached , parent_tid=[2549], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2549 [pid 2549] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2549] mkdir("./file0", 000 [pid 2548] <... futex resumed>) = 0 [pid 2549] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2549] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2548] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2549] <... futex resumed>) = 0 [pid 2548] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2549] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2549] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2548] <... futex resumed>) = 0 [pid 2548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2549] <... futex resumed>) = 0 [pid 2548] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2549] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2548] <... futex resumed>) = 0 [pid 2548] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2549] <... futex resumed>) = 1 [pid 2548] <... futex resumed>) = 0 [pid 2549] umount2("./file0", MNT_DETACH [pid 2548] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2549] <... umount2 resumed>) = 0 [pid 2548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2549] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2548] <... mmap resumed>) = 0x7fc84e05e000 [pid 2548] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2548] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2550 attached [pid 2550] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2550] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2548] <... clone resumed>, parent_tid=[2550], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2550 [pid 2548] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2550] <... futex resumed>) = 0 [pid 2550] umount2("./file0", MNT_DETACH [pid 2548] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2550] <... umount2 resumed>) = 0 [pid 2550] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2550] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2548] <... futex resumed>) = 0 [pid 2548] exit_group(0) = ? [pid 2549] <... futex resumed>) = ? [pid 2549] +++ exited with 0 +++ [pid 2550] <... futex resumed>) = ? [pid 2550] +++ exited with 0 +++ [pid 2548] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2548, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2551 ./strace-static-x86_64: Process 2551 attached [pid 2551] set_robust_list(0x5555564465e0, 24) = 0 [pid 2551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2551] setpgid(0, 0) = 0 [pid 2551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2551] write(3, "1000", 4) = 4 [pid 2551] close(3) = 0 [pid 2551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2551] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2551] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2551] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2552 attached , parent_tid=[2552], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2552 [pid 2551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2551] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2552] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2552] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2551] <... futex resumed>) = 0 [pid 2551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2552] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2551] <... futex resumed>) = 0 [pid 2551] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2552] <... mount resumed>) = 0 [pid 2552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2551] <... futex resumed>) = 0 [pid 2551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2552] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2551] <... futex resumed>) = 0 [pid 2551] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2552] <... mount resumed>) = 0 [pid 2552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2551] <... futex resumed>) = 0 [pid 2551] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2551] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2552] umount2("./file0", MNT_DETACH [pid 2551] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2551] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2552] <... umount2 resumed>) = 0 [pid 2551] <... mprotect resumed>) = 0 [pid 2551] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2553], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2553 ./strace-static-x86_64: Process 2553 attached [pid 2552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2551] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2551] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2553] set_robust_list(0x7fc84e07e9e0, 24 [pid 2552] <... futex resumed>) = 0 [pid 2553] <... set_robust_list resumed>) = 0 [pid 2552] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2553] umount2("./file0", MNT_DETACH) = 0 [pid 2553] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2551] <... futex resumed>) = 0 [pid 2551] exit_group(0) = ? [pid 2552] <... futex resumed>) = ? [pid 2553] <... futex resumed>) = ? [pid 2553] +++ exited with 0 +++ [pid 2552] +++ exited with 0 +++ [pid 2551] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2551, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2554 ./strace-static-x86_64: Process 2554 attached [pid 2554] set_robust_list(0x5555564465e0, 24) = 0 [pid 2554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2554] setpgid(0, 0) = 0 [pid 2554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2554] write(3, "1000", 4) = 4 [pid 2554] close(3) = 0 [pid 2554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2554] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2554] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2555 attached , parent_tid=[2555], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2555 [pid 2555] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2555] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2555] <... futex resumed>) = 0 [pid 2555] mkdir("./file0", 000 [pid 2554] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2555] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2555] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2555] <... futex resumed>) = 0 [pid 2555] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2554] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2555] <... mount resumed>) = 0 [pid 2555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2555] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] <... futex resumed>) = 0 [pid 2554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2555] <... futex resumed>) = 0 [pid 2555] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2554] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2555] <... mount resumed>) = 0 [pid 2555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2555] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] <... futex resumed>) = 0 [pid 2554] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2555] <... futex resumed>) = 0 [pid 2555] umount2("./file0", MNT_DETACH [pid 2554] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2555] <... umount2 resumed>) = 0 [pid 2555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2555] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2554] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2554] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2556 attached , parent_tid=[2556], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2556 [pid 2556] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2556] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2556] <... futex resumed>) = 0 [pid 2556] umount2("./file0", MNT_DETACH [pid 2554] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2556] <... umount2 resumed>) = 0 [pid 2556] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2556] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2554] exit_group(0 [pid 2555] <... futex resumed>) = ? [pid 2554] <... exit_group resumed>) = ? [pid 2555] +++ exited with 0 +++ [pid 2556] <... futex resumed>) = ? [pid 2556] +++ exited with 0 +++ [pid 2554] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2554, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2557 attached , child_tidptr=0x5555564465d0) = 2557 [pid 2557] set_robust_list(0x5555564465e0, 24) = 0 [pid 2557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2557] setpgid(0, 0) = 0 [pid 2557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2557] write(3, "1000", 4) = 4 [pid 2557] close(3) = 0 [pid 2557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2557] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2557] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2557] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2558 attached , parent_tid=[2558], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2558 [pid 2558] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2558] <... futex resumed>) = 0 [pid 2557] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2558] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2557] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2558] <... futex resumed>) = 0 [pid 2558] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2557] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2558] <... mount resumed>) = 0 [pid 2558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2557] <... futex resumed>) = 0 [pid 2557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2558] <... futex resumed>) = 0 [pid 2557] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2558] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2557] <... futex resumed>) = 0 [pid 2558] umount2("./file0", MNT_DETACH [pid 2557] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2557] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2558] <... umount2 resumed>) = 0 [pid 2557] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2557] <... mmap resumed>) = 0x7fc84e05e000 [pid 2558] <... futex resumed>) = 0 [pid 2557] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2558] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2557] <... mprotect resumed>) = 0 [pid 2557] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2559 attached [pid 2559] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2559] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2557] <... clone resumed>, parent_tid=[2559], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2559 [pid 2557] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2559] <... futex resumed>) = 0 [pid 2557] <... futex resumed>) = 1 [pid 2559] umount2("./file0", MNT_DETACH [pid 2557] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2559] <... umount2 resumed>) = 0 [pid 2559] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2557] <... futex resumed>) = 0 [pid 2557] exit_group(0) = ? [pid 2558] <... futex resumed>) = ? [pid 2559] +++ exited with 0 +++ [pid 2558] +++ exited with 0 +++ [pid 2557] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2557, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2560 ./strace-static-x86_64: Process 2560 attached [pid 2560] set_robust_list(0x5555564465e0, 24) = 0 [pid 2560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2560] setpgid(0, 0) = 0 [pid 2560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2560] write(3, "1000", 4) = 4 [pid 2560] close(3) = 0 [pid 2560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2560] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2560] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2561 attached , parent_tid=[2561], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2561 [pid 2561] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2561] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2561] <... futex resumed>) = 0 [pid 2561] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2561] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2560] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2561] <... futex resumed>) = 0 [pid 2561] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2560] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2561] <... mount resumed>) = 0 [pid 2561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2561] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2561] <... futex resumed>) = 0 [pid 2561] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2560] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2561] <... mount resumed>) = 0 [pid 2561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2560] <... futex resumed>) = 0 [pid 2560] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2560] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2561] umount2("./file0", MNT_DETACH [pid 2560] <... futex resumed>) = 0 [pid 2560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2560] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2560] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2561] <... umount2 resumed>) = 0 [pid 2560] <... clone resumed>, parent_tid=[2562], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2562 [pid 2560] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2560] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2562 attached [pid 2562] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2562] umount2("./file0", MNT_DETACH [pid 2561] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2562] <... umount2 resumed>) = 0 [pid 2562] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2560] <... futex resumed>) = 0 [pid 2560] exit_group(0) = ? [pid 2562] <... futex resumed>) = ? [pid 2562] +++ exited with 0 +++ [pid 2561] <... futex resumed>) = ? [pid 2561] +++ exited with 0 +++ [pid 2560] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2560, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2563 ./strace-static-x86_64: Process 2563 attached [pid 2563] set_robust_list(0x5555564465e0, 24) = 0 [pid 2563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2563] setpgid(0, 0) = 0 [pid 2563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2563] write(3, "1000", 4) = 4 [pid 2563] close(3) = 0 [pid 2563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2563] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2563] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2563] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2564 attached [pid 2564] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2564] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2563] <... clone resumed>, parent_tid=[2564], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2564 [pid 2563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2564] <... futex resumed>) = 0 [pid 2564] mkdir("./file0", 000 [pid 2563] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2564] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2564] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2563] <... futex resumed>) = 0 [pid 2563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2564] <... futex resumed>) = 0 [pid 2564] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2563] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2564] <... mount resumed>) = 0 [pid 2564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2564] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2563] <... futex resumed>) = 0 [pid 2563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2564] <... futex resumed>) = 0 [pid 2564] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2563] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2564] <... mount resumed>) = 0 [pid 2564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2563] <... futex resumed>) = 0 [pid 2563] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2563] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2563] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2563] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2563] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2565], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2565 [pid 2563] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2563] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2565 attached [pid 2565] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2565] umount2("./file0", MNT_DETACH [pid 2564] umount2("./file0", MNT_DETACH [pid 2565] <... umount2 resumed>) = 0 [pid 2565] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2563] <... futex resumed>) = 0 [pid 2565] <... futex resumed>) = 1 [pid 2565] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2564] <... umount2 resumed>) = 0 [pid 2564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2564] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2563] exit_group(0) = ? [pid 2564] <... futex resumed>) = ? [pid 2565] <... futex resumed>) = ? [pid 2565] +++ exited with 0 +++ [pid 2564] +++ exited with 0 +++ [pid 2563] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2563, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2566 ./strace-static-x86_64: Process 2566 attached [pid 2566] set_robust_list(0x5555564465e0, 24) = 0 [pid 2566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2566] setpgid(0, 0) = 0 [pid 2566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2566] write(3, "1000", 4) = 4 [pid 2566] close(3) = 0 [pid 2566] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2566] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2566] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2567 attached , parent_tid=[2567], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2567 [pid 2567] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2567] <... futex resumed>) = 0 [pid 2567] mkdir("./file0", 000 [pid 2566] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2567] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2566] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2567] <... futex resumed>) = 0 [pid 2566] <... futex resumed>) = 1 [pid 2567] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2566] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2567] <... futex resumed>) = 0 [pid 2567] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2566] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2567] <... mount resumed>) = 0 [pid 2567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2566] <... futex resumed>) = 0 [pid 2566] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2567] <... futex resumed>) = 0 [pid 2567] umount2("./file0", MNT_DETACH [pid 2566] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2566] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2567] <... umount2 resumed>) = 0 [pid 2566] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2568], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2568 [pid 2566] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2566] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2568 attached [pid 2568] set_robust_list(0x7fc84e07e9e0, 24 [pid 2567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2568] <... set_robust_list resumed>) = 0 [pid 2567] <... futex resumed>) = 0 [pid 2568] umount2("./file0", MNT_DETACH [pid 2567] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2568] <... umount2 resumed>) = 0 [pid 2568] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2566] <... futex resumed>) = 0 [pid 2566] exit_group(0) = ? [pid 2568] <... futex resumed>) = ? [pid 2567] <... futex resumed>) = ? [pid 2568] +++ exited with 0 +++ [pid 2567] +++ exited with 0 +++ [pid 2566] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2566, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2569 attached , child_tidptr=0x5555564465d0) = 2569 [pid 2569] set_robust_list(0x5555564465e0, 24) = 0 [pid 2569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2569] setpgid(0, 0) = 0 [pid 2569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2569] write(3, "1000", 4) = 4 [pid 2569] close(3) = 0 [pid 2569] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2569] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2569] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2569] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2570 attached , parent_tid=[2570], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2570 [pid 2570] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2570] <... futex resumed>) = 0 [pid 2570] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2569] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2570] <... futex resumed>) = 0 [pid 2570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2569] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2569] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2570] <... futex resumed>) = 0 [pid 2570] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2569] <... futex resumed>) = 0 [pid 2569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2569] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2570] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2569] <... futex resumed>) = 0 [pid 2569] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2569] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2569] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2569] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2569] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2570] umount2("./file0", MNT_DETACH) = 0 [pid 2570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2569] <... clone resumed>, parent_tid=[2571], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2571 [pid 2569] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2569] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2571 attached [pid 2570] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2571] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2571] umount2("./file0", MNT_DETACH) = 0 [pid 2571] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2569] <... futex resumed>) = 0 [pid 2571] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2569] exit_group(0) = ? [pid 2571] <... futex resumed>) = ? [pid 2571] +++ exited with 0 +++ [pid 2570] <... futex resumed>) = ? [pid 2570] +++ exited with 0 +++ [pid 2569] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2569, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2572 ./strace-static-x86_64: Process 2572 attached [pid 2572] set_robust_list(0x5555564465e0, 24) = 0 [pid 2572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2572] setpgid(0, 0) = 0 [pid 2572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2572] write(3, "1000", 4) = 4 [pid 2572] close(3) = 0 [pid 2572] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2572] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2572] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2573 attached , parent_tid=[2573], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2573 [pid 2573] set_robust_list(0x7fc84e09f9e0, 24 [pid 2572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2573] <... set_robust_list resumed>) = 0 [pid 2572] <... futex resumed>) = 0 [pid 2572] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2573] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2572] <... futex resumed>) = 0 [pid 2573] <... futex resumed>) = 1 [pid 2572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2573] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2572] <... futex resumed>) = 0 [pid 2572] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2573] <... mount resumed>) = 0 [pid 2573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2572] <... futex resumed>) = 0 [pid 2573] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2572] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2573] <... mount resumed>) = 0 [pid 2573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2572] <... futex resumed>) = 0 [pid 2573] umount2("./file0", MNT_DETACH [pid 2572] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2572] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2572] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2573] <... umount2 resumed>) = 0 [pid 2572] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2573] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2574 attached [pid 2574] set_robust_list(0x7fc84e07e9e0, 24 [pid 2572] <... clone resumed>, parent_tid=[2574], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2574 [pid 2572] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2574] <... set_robust_list resumed>) = 0 [pid 2572] <... futex resumed>) = 0 [pid 2574] umount2("./file0", MNT_DETACH [pid 2572] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2574] <... umount2 resumed>) = 0 [pid 2574] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2572] <... futex resumed>) = 0 [pid 2574] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2572] exit_group(0) = ? [pid 2573] <... futex resumed>) = ? [pid 2573] +++ exited with 0 +++ [pid 2574] <... futex resumed>) = ? [pid 2574] +++ exited with 0 +++ [pid 2572] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2572, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2575 ./strace-static-x86_64: Process 2575 attached [pid 2575] set_robust_list(0x5555564465e0, 24) = 0 [pid 2575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2575] setpgid(0, 0) = 0 [pid 2575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2575] write(3, "1000", 4) = 4 [pid 2575] close(3) = 0 [pid 2575] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2575] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2575] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2575] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2576 attached , parent_tid=[2576], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2576 [pid 2576] set_robust_list(0x7fc84e09f9e0, 24 [pid 2575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2576] <... set_robust_list resumed>) = 0 [pid 2575] <... futex resumed>) = 0 [pid 2575] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2576] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2575] <... futex resumed>) = 0 [pid 2576] <... futex resumed>) = 1 [pid 2576] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2575] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2576] <... mount resumed>) = 0 [pid 2576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2575] <... futex resumed>) = 0 [pid 2576] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2576] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2575] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2576] <... mount resumed>) = 0 [pid 2576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2575] <... futex resumed>) = 0 [pid 2575] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2575] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2575] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2575] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2576] umount2("./file0", MNT_DETACH [pid 2575] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2576] <... umount2 resumed>) = 0 [pid 2575] <... clone resumed>, parent_tid=[2577], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2577 [pid 2575] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2575] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2577 attached [pid 2577] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2577] umount2("./file0", MNT_DETACH [pid 2576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2577] <... umount2 resumed>) = 0 [pid 2576] <... futex resumed>) = 0 [pid 2577] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2575] <... futex resumed>) = 0 [pid 2575] exit_group(0) = ? [pid 2576] +++ exited with 0 +++ [pid 2577] <... futex resumed>) = ? [pid 2577] +++ exited with 0 +++ [pid 2575] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2575, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2578 ./strace-static-x86_64: Process 2578 attached [pid 2578] set_robust_list(0x5555564465e0, 24) = 0 [pid 2578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2578] setpgid(0, 0) = 0 [pid 2578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2578] write(3, "1000", 4) = 4 [pid 2578] close(3) = 0 [pid 2578] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2578] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2578] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2579 attached [pid 2579] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2579] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2578] <... clone resumed>, parent_tid=[2579], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2579 [pid 2578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2579] <... futex resumed>) = 0 [pid 2579] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2579] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2578] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2579] <... futex resumed>) = 0 [pid 2579] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2579] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2578] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2579] <... futex resumed>) = 0 [pid 2579] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2578] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2579] <... mount resumed>) = 0 [pid 2579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2579] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2578] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2579] <... futex resumed>) = 0 [pid 2579] umount2("./file0", MNT_DETACH) = 0 [pid 2578] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2579] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2578] <... futex resumed>) = 0 [pid 2578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2578] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2578] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2580], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2580 [pid 2578] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2578] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2580 attached [pid 2580] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2580] umount2("./file0", MNT_DETACH) = 0 [pid 2580] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2578] <... futex resumed>) = 0 [pid 2578] exit_group(0 [pid 2579] <... futex resumed>) = ? [pid 2578] <... exit_group resumed>) = ? [pid 2579] +++ exited with 0 +++ [pid 2580] <... futex resumed>) = ? [pid 2580] +++ exited with 0 +++ [pid 2578] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2578, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2581 ./strace-static-x86_64: Process 2581 attached [pid 2581] set_robust_list(0x5555564465e0, 24) = 0 [pid 2581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2581] setpgid(0, 0) = 0 [pid 2581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2581] write(3, "1000", 4) = 4 [pid 2581] close(3) = 0 [pid 2581] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2581] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2581] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2581] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2582 attached , parent_tid=[2582], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2582 [pid 2582] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2582] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2582] <... futex resumed>) = 0 [pid 2582] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2582] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2581] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2582] <... futex resumed>) = 0 [pid 2582] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2581] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2582] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2581] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2582] <... futex resumed>) = 0 [pid 2582] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2581] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2582] <... mount resumed>) = 0 [pid 2582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2581] <... futex resumed>) = 0 [pid 2582] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2581] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2581] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2581] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2581] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2581] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2582] umount2("./file0", MNT_DETACH [pid 2581] <... clone resumed>, parent_tid=[2583], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2583 [pid 2581] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2581] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2583 attached [pid 2583] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2583] umount2("./file0", MNT_DETACH [pid 2582] <... umount2 resumed>) = 0 [pid 2582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2583] <... umount2 resumed>) = 0 [pid 2582] <... futex resumed>) = 0 [pid 2583] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2581] <... futex resumed>) = 0 [pid 2582] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2581] exit_group(0) = ? [pid 2582] <... futex resumed>) = ? [pid 2583] <... futex resumed>) = ? [pid 2583] +++ exited with 0 +++ [pid 2582] +++ exited with 0 +++ [pid 2581] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2581, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2584 ./strace-static-x86_64: Process 2584 attached [pid 2584] set_robust_list(0x5555564465e0, 24) = 0 [pid 2584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2584] setpgid(0, 0) = 0 [pid 2584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2584] write(3, "1000", 4) = 4 [pid 2584] close(3) = 0 [pid 2584] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2584] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2584] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2585 attached , parent_tid=[2585], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2585 [pid 2585] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2585] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2585] <... futex resumed>) = 0 [pid 2584] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2585] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2584] <... futex resumed>) = 0 [pid 2585] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2585] <... futex resumed>) = 0 [pid 2585] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2584] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2585] <... mount resumed>) = 0 [pid 2585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2585] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2584] <... futex resumed>) = 0 [pid 2584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2585] <... futex resumed>) = 0 [pid 2585] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2584] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2585] <... mount resumed>) = 0 [pid 2585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2584] <... futex resumed>) = 0 [pid 2585] umount2("./file0", MNT_DETACH [pid 2584] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2584] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2584] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2585] <... umount2 resumed>) = 0 [pid 2585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2584] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2585] <... futex resumed>) = 0 [pid 2585] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2586 attached [pid 2586] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2584] <... clone resumed>, parent_tid=[2586], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2586 [pid 2584] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2586] umount2("./file0", MNT_DETACH [pid 2584] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2586] <... umount2 resumed>) = 0 [pid 2586] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2584] <... futex resumed>) = 0 [pid 2586] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2584] exit_group(0) = ? [pid 2585] <... futex resumed>) = ? [pid 2585] +++ exited with 0 +++ [pid 2586] <... futex resumed>) = ? [pid 2586] +++ exited with 0 +++ [pid 2584] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2584, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2587 ./strace-static-x86_64: Process 2587 attached [pid 2587] set_robust_list(0x5555564465e0, 24) = 0 [pid 2587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2587] setpgid(0, 0) = 0 [pid 2587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2587] write(3, "1000", 4) = 4 [pid 2587] close(3) = 0 [pid 2587] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2587] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2587] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2588 attached , parent_tid=[2588], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2588 [pid 2588] set_robust_list(0x7fc84e09f9e0, 24 [pid 2587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2588] <... set_robust_list resumed>) = 0 [pid 2587] <... futex resumed>) = 0 [pid 2587] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2588] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2587] <... futex resumed>) = 0 [pid 2587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2587] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2588] <... futex resumed>) = 1 [pid 2588] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2587] <... futex resumed>) = 0 [pid 2587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2587] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2588] <... futex resumed>) = 1 [pid 2588] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2587] <... futex resumed>) = 0 [pid 2587] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2587] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2587] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2588] <... futex resumed>) = 1 [pid 2587] <... mmap resumed>) = 0x7fc84e05e000 [pid 2587] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2587] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2589], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2589 [pid 2587] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2587] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2588] umount2("./file0", MNT_DETACH) = 0 [pid 2588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2588] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2589 attached [pid 2589] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2589] umount2("./file0", MNT_DETACH) = 0 [pid 2589] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2587] <... futex resumed>) = 0 [pid 2587] exit_group(0) = ? [pid 2588] <... futex resumed>) = ? [pid 2589] +++ exited with 0 +++ [pid 2588] +++ exited with 0 +++ [pid 2587] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2587, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2590 ./strace-static-x86_64: Process 2590 attached [pid 2590] set_robust_list(0x5555564465e0, 24) = 0 [pid 2590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2590] setpgid(0, 0) = 0 [pid 2590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2590] write(3, "1000", 4) = 4 [pid 2590] close(3) = 0 [pid 2590] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2590] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2590] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2591], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2591 [pid 2590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2590] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2591 attached [pid 2591] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2591] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2590] <... futex resumed>) = 0 [pid 2590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2590] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2591] <... futex resumed>) = 1 [pid 2591] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2590] <... futex resumed>) = 0 [pid 2590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2590] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2591] <... futex resumed>) = 1 [pid 2591] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2590] <... futex resumed>) = 0 [pid 2591] <... futex resumed>) = 1 [pid 2590] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2591] umount2("./file0", MNT_DETACH [pid 2590] <... futex resumed>) = 0 [pid 2590] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2590] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2591] <... umount2 resumed>) = 0 [pid 2591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2590] <... mprotect resumed>) = 0 [pid 2591] <... futex resumed>) = 0 [pid 2590] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2591] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2592 attached [pid 2590] <... clone resumed>, parent_tid=[2592], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2592 [pid 2590] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2592] set_robust_list(0x7fc84e07e9e0, 24 [pid 2590] <... futex resumed>) = 0 [pid 2592] <... set_robust_list resumed>) = 0 [pid 2590] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2592] umount2("./file0", MNT_DETACH) = 0 [pid 2592] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2590] <... futex resumed>) = 0 [pid 2590] exit_group(0) = ? [pid 2591] <... futex resumed>) = ? [pid 2591] +++ exited with 0 +++ [pid 2592] ????() = ? [pid 2592] +++ exited with 0 +++ [pid 2590] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2590, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2593 ./strace-static-x86_64: Process 2593 attached [pid 2593] set_robust_list(0x5555564465e0, 24) = 0 [pid 2593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2593] setpgid(0, 0) = 0 [pid 2593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2593] write(3, "1000", 4) = 4 [pid 2593] close(3) = 0 [pid 2593] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2593] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2593] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2594 attached [pid 2594] set_robust_list(0x7fc84e09f9e0, 24 [pid 2593] <... clone resumed>, parent_tid=[2594], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2594 [pid 2594] <... set_robust_list resumed>) = 0 [pid 2594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2594] <... futex resumed>) = 0 [pid 2594] mkdir("./file0", 000 [pid 2593] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2594] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2594] <... futex resumed>) = 0 [pid 2594] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2593] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2594] <... mount resumed>) = 0 [pid 2594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2593] <... futex resumed>) = 0 [pid 2593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2593] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2594] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2593] <... futex resumed>) = 0 [pid 2593] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2593] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2593] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2593] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2593] <... clone resumed>, parent_tid=[2595], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2595 [pid 2594] umount2("./file0", MNT_DETACH [pid 2593] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2593] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2595 attached [pid 2595] set_robust_list(0x7fc84e07e9e0, 24 [pid 2594] <... umount2 resumed>) = 0 [pid 2595] <... set_robust_list resumed>) = 0 [pid 2595] umount2("./file0", MNT_DETACH [pid 2594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2594] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2595] <... umount2 resumed>) = 0 [pid 2595] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2593] <... futex resumed>) = 0 [pid 2593] exit_group(0) = ? [pid 2594] <... futex resumed>) = ? [pid 2594] +++ exited with 0 +++ [pid 2595] <... futex resumed>) = ? [pid 2595] +++ exited with 0 +++ [pid 2593] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2593, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2596 ./strace-static-x86_64: Process 2596 attached [pid 2596] set_robust_list(0x5555564465e0, 24) = 0 [pid 2596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2596] setpgid(0, 0) = 0 [pid 2596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2596] write(3, "1000", 4) = 4 [pid 2596] close(3) = 0 [pid 2596] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2596] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2596] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2597 attached [pid 2597] set_robust_list(0x7fc84e09f9e0, 24 [pid 2596] <... clone resumed>, parent_tid=[2597], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2597 [pid 2597] <... set_robust_list resumed>) = 0 [pid 2597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2597] <... futex resumed>) = 0 [pid 2597] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2596] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2597] <... futex resumed>) = 0 [pid 2597] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2596] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2596] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2597] <... futex resumed>) = 0 [pid 2596] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2597] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2596] <... futex resumed>) = 0 [pid 2597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2596] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2596] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2597] umount2("./file0", MNT_DETACH [pid 2596] <... mmap resumed>) = 0x7fc84e05e000 [pid 2596] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2597] <... umount2 resumed>) = 0 [pid 2596] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2598], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2598 [pid 2596] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2596] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2598 attached [pid 2597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2598] set_robust_list(0x7fc84e07e9e0, 24 [pid 2597] <... futex resumed>) = 0 [pid 2598] <... set_robust_list resumed>) = 0 [pid 2597] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2598] umount2("./file0", MNT_DETACH) = 0 [pid 2598] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2596] <... futex resumed>) = 0 [pid 2596] exit_group(0) = ? [pid 2597] <... futex resumed>) = ? [pid 2597] +++ exited with 0 +++ [pid 2598] +++ exited with 0 +++ [pid 2596] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2596, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2599 ./strace-static-x86_64: Process 2599 attached [pid 2599] set_robust_list(0x5555564465e0, 24) = 0 [pid 2599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2599] setpgid(0, 0) = 0 [pid 2599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2599] write(3, "1000", 4) = 4 [pid 2599] close(3) = 0 [pid 2599] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2599] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2599] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2600 attached [pid 2600] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] <... clone resumed>, parent_tid=[2600], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2600 [pid 2599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2600] <... futex resumed>) = 0 [pid 2600] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2600] <... futex resumed>) = 0 [pid 2600] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2600] <... futex resumed>) = 0 [pid 2600] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2599] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2600] <... mount resumed>) = 0 [pid 2600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2599] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2600] <... futex resumed>) = 0 [pid 2600] umount2("./file0", MNT_DETACH [pid 2599] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2600] <... umount2 resumed>) = 0 [pid 2600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2600] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] <... futex resumed>) = 0 [pid 2599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2599] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2599] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2601 attached [pid 2601] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2601] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] <... clone resumed>, parent_tid=[2601], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2601 [pid 2599] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2601] <... futex resumed>) = 0 [pid 2599] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2601] umount2("./file0", MNT_DETACH) = 0 [pid 2601] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2601] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2599] <... futex resumed>) = 0 [pid 2599] exit_group(0 [pid 2600] <... futex resumed>) = ? [pid 2599] <... exit_group resumed>) = ? [pid 2600] +++ exited with 0 +++ [pid 2601] <... futex resumed>) = ? [pid 2601] +++ exited with 0 +++ [pid 2599] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2599, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2602 ./strace-static-x86_64: Process 2602 attached [pid 2602] set_robust_list(0x5555564465e0, 24) = 0 [pid 2602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2602] setpgid(0, 0) = 0 [pid 2602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2602] write(3, "1000", 4) = 4 [pid 2602] close(3) = 0 [pid 2602] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2602] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2602] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2603 attached , parent_tid=[2603], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2603 [pid 2603] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2603] <... futex resumed>) = 0 [pid 2603] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2602] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2603] <... futex resumed>) = 0 [pid 2602] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2603] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2603] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2602] <... futex resumed>) = 0 [pid 2603] <... mount resumed>) = 0 [pid 2603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2602] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2603] <... futex resumed>) = 0 [pid 2603] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2602] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2603] <... mount resumed>) = 0 [pid 2603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2602] <... futex resumed>) = 0 [pid 2602] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2603] <... futex resumed>) = 0 [pid 2603] umount2("./file0", MNT_DETACH [pid 2602] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2603] <... umount2 resumed>) = 0 [pid 2603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2603] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2602] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2602] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2604 attached , parent_tid=[2604], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2604 [pid 2604] set_robust_list(0x7fc84e07e9e0, 24 [pid 2602] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2602] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2604] <... set_robust_list resumed>) = 0 [pid 2604] umount2("./file0", MNT_DETACH) = 0 [pid 2604] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2602] <... futex resumed>) = 0 [pid 2602] exit_group(0 [pid 2603] <... futex resumed>) = ? [pid 2602] <... exit_group resumed>) = ? [pid 2603] +++ exited with 0 +++ [pid 2604] +++ exited with 0 +++ [pid 2602] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2602, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2605 ./strace-static-x86_64: Process 2605 attached [pid 2605] set_robust_list(0x5555564465e0, 24) = 0 [pid 2605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2605] setpgid(0, 0) = 0 [pid 2605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2605] write(3, "1000", 4) = 4 [pid 2605] close(3) = 0 [pid 2605] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2605] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2605] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2606 attached , parent_tid=[2606], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2606 [pid 2605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2606] set_robust_list(0x7fc84e09f9e0, 24 [pid 2605] <... futex resumed>) = 0 [pid 2606] <... set_robust_list resumed>) = 0 [pid 2605] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2606] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2605] <... futex resumed>) = 0 [pid 2605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2606] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2605] <... futex resumed>) = 0 [pid 2605] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2606] <... mount resumed>) = 0 [pid 2606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2605] <... futex resumed>) = 0 [pid 2605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2605] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2606] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2605] <... futex resumed>) = 0 [pid 2605] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2605] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2605] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2605] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2607], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2607 ./strace-static-x86_64: Process 2607 attached [pid 2606] umount2("./file0", MNT_DETACH [pid 2605] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2605] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2607] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2607] umount2("./file0", MNT_DETACH [pid 2606] <... umount2 resumed>) = 0 [pid 2607] <... umount2 resumed>) = 0 [pid 2606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2607] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2605] <... futex resumed>) = 0 [pid 2605] exit_group(0) = ? [pid 2606] <... futex resumed>) = ? [pid 2607] <... futex resumed>) = ? [pid 2606] +++ exited with 0 +++ [pid 2607] +++ exited with 0 +++ [pid 2605] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2605, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2608 attached , child_tidptr=0x5555564465d0) = 2608 [pid 2608] set_robust_list(0x5555564465e0, 24) = 0 [pid 2608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2608] setpgid(0, 0) = 0 [pid 2608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2608] write(3, "1000", 4) = 4 [pid 2608] close(3) = 0 [pid 2608] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2608] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2608] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2609 attached , parent_tid=[2609], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2609 [pid 2609] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2609] <... futex resumed>) = 0 [pid 2609] mkdir("./file0", 000 [pid 2608] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2609] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2609] <... futex resumed>) = 0 [pid 2609] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2608] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2609] <... mount resumed>) = 0 [pid 2609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2609] <... futex resumed>) = 0 [pid 2609] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2608] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2609] <... mount resumed>) = 0 [pid 2609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2608] <... futex resumed>) = 0 [pid 2608] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2609] <... futex resumed>) = 0 [pid 2609] umount2("./file0", MNT_DETACH [pid 2608] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2609] <... umount2 resumed>) = 0 [pid 2609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2609] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2608] <... futex resumed>) = 0 [pid 2608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2608] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2608] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2610], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2610 [pid 2608] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2608] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2610 attached [pid 2610] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2610] umount2("./file0", MNT_DETACH) = 0 [pid 2610] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2608] <... futex resumed>) = 0 [pid 2608] exit_group(0) = ? [pid 2609] <... futex resumed>) = ? [pid 2609] +++ exited with 0 +++ [pid 2610] +++ exited with 0 +++ [pid 2608] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2608, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2611 ./strace-static-x86_64: Process 2611 attached [pid 2611] set_robust_list(0x5555564465e0, 24) = 0 [pid 2611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2611] setpgid(0, 0) = 0 [pid 2611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2611] write(3, "1000", 4) = 4 [pid 2611] close(3) = 0 [pid 2611] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2611] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2611] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2612 attached , parent_tid=[2612], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2612 [pid 2612] set_robust_list(0x7fc84e09f9e0, 24 [pid 2611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2612] <... set_robust_list resumed>) = 0 [pid 2612] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2611] <... futex resumed>) = 0 [pid 2611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2612] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2611] <... futex resumed>) = 0 [pid 2611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2612] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2611] <... futex resumed>) = 0 [pid 2611] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2611] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2611] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2612] umount2("./file0", MNT_DETACH [pid 2611] <... clone resumed>, parent_tid=[2613], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2613 [pid 2611] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2611] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2613 attached [pid 2613] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2613] umount2("./file0", MNT_DETACH) = 0 [pid 2612] <... umount2 resumed>) = 0 [pid 2613] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2611] <... futex resumed>) = 0 [pid 2613] <... futex resumed>) = 1 [pid 2612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2613] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2612] <... futex resumed>) = 0 [pid 2612] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2611] exit_group(0) = ? [pid 2612] <... futex resumed>) = ? [pid 2613] <... futex resumed>) = ? [pid 2612] +++ exited with 0 +++ [pid 2613] +++ exited with 0 +++ [pid 2611] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2611, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2614 ./strace-static-x86_64: Process 2614 attached [pid 2614] set_robust_list(0x5555564465e0, 24) = 0 [pid 2614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2614] setpgid(0, 0) = 0 [pid 2614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2614] write(3, "1000", 4) = 4 [pid 2614] close(3) = 0 [pid 2614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2614] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2614] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2615 attached , parent_tid=[2615], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2615 [pid 2615] set_robust_list(0x7fc84e09f9e0, 24 [pid 2614] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2615] <... set_robust_list resumed>) = 0 [pid 2614] <... futex resumed>) = 0 [pid 2614] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2615] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2615] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2614] <... futex resumed>) = 0 [pid 2615] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2614] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2614] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2615] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2615] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2614] <... futex resumed>) = 0 [pid 2614] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2614] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2615] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2615] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2614] <... futex resumed>) = 0 [pid 2614] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2614] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2614] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2614] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2615] umount2("./file0", MNT_DETACH [pid 2614] <... clone resumed>, parent_tid=[2616], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2616 [pid 2614] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2614] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2616 attached [pid 2615] <... umount2 resumed>) = 0 [pid 2616] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2616] umount2("./file0", MNT_DETACH) = 0 [pid 2615] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2616] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2615] <... futex resumed>) = 0 [pid 2616] <... futex resumed>) = 1 [pid 2615] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2614] <... futex resumed>) = 0 [pid 2614] exit_group(0 [pid 2616] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2614] <... exit_group resumed>) = ? [pid 2616] <... futex resumed>) = ? [pid 2615] <... futex resumed>) = ? [pid 2615] +++ exited with 0 +++ [pid 2616] +++ exited with 0 +++ [pid 2614] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2614, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2617 ./strace-static-x86_64: Process 2617 attached [pid 2617] set_robust_list(0x5555564465e0, 24) = 0 [pid 2617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2617] setpgid(0, 0) = 0 [pid 2617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2617] write(3, "1000", 4) = 4 [pid 2617] close(3) = 0 [pid 2617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2617] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2617] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2617] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2618 attached [pid 2618] set_robust_list(0x7fc84e09f9e0, 24 [pid 2617] <... clone resumed>, parent_tid=[2618], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2618 [pid 2618] <... set_robust_list resumed>) = 0 [pid 2618] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2617] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2618] <... futex resumed>) = 0 [pid 2617] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2618] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2618] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2618] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2617] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2618] <... futex resumed>) = 0 [pid 2617] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2618] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2618] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2617] <... futex resumed>) = 0 [pid 2617] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2617] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2618] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2618] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2617] <... futex resumed>) = 0 [pid 2617] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2617] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2617] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2617] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2618] umount2("./file0", MNT_DETACH [pid 2617] <... mprotect resumed>) = 0 [pid 2617] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2618] <... umount2 resumed>) = 0 [pid 2617] <... clone resumed>, parent_tid=[2619], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2619 [pid 2618] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2618] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2617] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2617] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2619 attached [pid 2619] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2619] umount2("./file0", MNT_DETACH) = 0 [pid 2619] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2617] <... futex resumed>) = 0 [pid 2617] exit_group(0) = ? [pid 2618] <... futex resumed>) = ? [pid 2619] +++ exited with 0 +++ [pid 2618] +++ exited with 0 +++ [pid 2617] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2617, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2620 ./strace-static-x86_64: Process 2620 attached [pid 2620] set_robust_list(0x5555564465e0, 24) = 0 [pid 2620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2620] setpgid(0, 0) = 0 [pid 2620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2620] write(3, "1000", 4) = 4 [pid 2620] close(3) = 0 [pid 2620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2620] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2620] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2621 attached , parent_tid=[2621], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2621 [pid 2621] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2621] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2621] <... futex resumed>) = 0 [pid 2620] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2621] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2621] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2621] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2620] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2621] <... futex resumed>) = 0 [pid 2621] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2620] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2621] <... mount resumed>) = 0 [pid 2621] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2621] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] <... futex resumed>) = 0 [pid 2620] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2621] <... futex resumed>) = 0 [pid 2621] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2620] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2621] <... mount resumed>) = 0 [pid 2621] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2621] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] <... futex resumed>) = 0 [pid 2620] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2621] <... futex resumed>) = 0 [pid 2621] umount2("./file0", MNT_DETACH [pid 2620] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2621] <... umount2 resumed>) = 0 [pid 2621] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2621] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] <... mmap resumed>) = 0x7fc84e05e000 [pid 2620] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2620] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2622 attached [pid 2622] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2622] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] <... clone resumed>, parent_tid=[2622], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2622 [pid 2620] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2622] <... futex resumed>) = 0 [pid 2622] umount2("./file0", MNT_DETACH [pid 2620] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2622] <... umount2 resumed>) = 0 [pid 2622] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2622] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2620] exit_group(0 [pid 2621] <... futex resumed>) = ? [pid 2620] <... exit_group resumed>) = ? [pid 2621] +++ exited with 0 +++ [pid 2622] <... futex resumed>) = ? [pid 2622] +++ exited with 0 +++ [pid 2620] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2620, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2623 ./strace-static-x86_64: Process 2623 attached [pid 2623] set_robust_list(0x5555564465e0, 24) = 0 [pid 2623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2623] setpgid(0, 0) = 0 [pid 2623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2623] write(3, "1000", 4) = 4 [pid 2623] close(3) = 0 [pid 2623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2623] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2623] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2624 attached , parent_tid=[2624], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2624 [pid 2624] set_robust_list(0x7fc84e09f9e0, 24 [pid 2623] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2624] <... set_robust_list resumed>) = 0 [pid 2623] <... futex resumed>) = 0 [pid 2623] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2624] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2624] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2623] <... futex resumed>) = 0 [pid 2623] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2624] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2623] <... futex resumed>) = 0 [pid 2623] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2624] <... mount resumed>) = 0 [pid 2624] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2623] <... futex resumed>) = 0 [pid 2624] <... futex resumed>) = 1 [pid 2623] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2624] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2623] <... futex resumed>) = 0 [pid 2623] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2624] <... mount resumed>) = 0 [pid 2624] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2623] <... futex resumed>) = 0 [pid 2623] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2623] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2624] umount2("./file0", MNT_DETACH [pid 2623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2623] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2624] <... umount2 resumed>) = 0 [pid 2623] <... mprotect resumed>) = 0 [pid 2624] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2623] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2624] <... futex resumed>) = 0 ./strace-static-x86_64: Process 2625 attached [pid 2623] <... clone resumed>, parent_tid=[2625], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2625 [pid 2625] set_robust_list(0x7fc84e07e9e0, 24 [pid 2624] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2623] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2623] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2625] <... set_robust_list resumed>) = 0 [pid 2625] umount2("./file0", MNT_DETACH) = 0 [pid 2625] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2623] <... futex resumed>) = 0 [pid 2623] exit_group(0 [pid 2625] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2623] <... exit_group resumed>) = ? [pid 2625] <... futex resumed>) = ? [pid 2624] <... futex resumed>) = ? [pid 2624] +++ exited with 0 +++ [pid 2625] +++ exited with 0 +++ [pid 2623] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2623, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2626 ./strace-static-x86_64: Process 2626 attached [pid 2626] set_robust_list(0x5555564465e0, 24) = 0 [pid 2626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2626] setpgid(0, 0) = 0 [pid 2626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2626] write(3, "1000", 4) = 4 [pid 2626] close(3) = 0 [pid 2626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2626] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2626] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2627 attached [pid 2627] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2627] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] <... clone resumed>, parent_tid=[2627], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2627 [pid 2626] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2627] <... futex resumed>) = 0 [pid 2627] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2627] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2627] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2626] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2627] <... futex resumed>) = 0 [pid 2627] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2626] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2627] <... mount resumed>) = 0 [pid 2627] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2627] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2626] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2627] <... futex resumed>) = 0 [pid 2627] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2626] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2627] <... mount resumed>) = 0 [pid 2627] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2627] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2626] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2627] <... futex resumed>) = 0 [pid 2627] umount2("./file0", MNT_DETACH [pid 2626] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2627] <... umount2 resumed>) = 0 [pid 2627] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2627] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] <... futex resumed>) = 0 [pid 2626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2626] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2626] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2628 attached , parent_tid=[2628], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2628 [pid 2628] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2628] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2628] <... futex resumed>) = 0 [pid 2628] umount2("./file0", MNT_DETACH) = 0 [pid 2628] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2628] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2626] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2626] exit_group(0 [pid 2627] <... futex resumed>) = ? [pid 2626] <... exit_group resumed>) = ? [pid 2627] +++ exited with 0 +++ [pid 2628] <... futex resumed>) = ? [pid 2628] +++ exited with 0 +++ [pid 2626] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2626, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2629 ./strace-static-x86_64: Process 2629 attached [pid 2629] set_robust_list(0x5555564465e0, 24) = 0 [pid 2629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2629] setpgid(0, 0) = 0 [pid 2629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2629] write(3, "1000", 4) = 4 [pid 2629] close(3) = 0 [pid 2629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2629] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2629] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2630 attached [pid 2630] set_robust_list(0x7fc84e09f9e0, 24 [pid 2629] <... clone resumed>, parent_tid=[2630], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2630 [pid 2630] <... set_robust_list resumed>) = 0 [pid 2629] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2629] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2630] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2630] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2629] <... futex resumed>) = 0 [pid 2630] <... futex resumed>) = 1 [pid 2630] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2629] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2629] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2630] <... mount resumed>) = 0 [pid 2630] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2629] <... futex resumed>) = 0 [pid 2630] <... futex resumed>) = 1 [pid 2629] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2630] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2629] <... futex resumed>) = 0 [pid 2629] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2630] <... mount resumed>) = 0 [pid 2630] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2629] <... futex resumed>) = 0 [pid 2630] <... futex resumed>) = 1 [pid 2629] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2630] umount2("./file0", MNT_DETACH [pid 2629] <... futex resumed>) = 0 [pid 2629] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2629] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2629] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2631 attached [pid 2630] <... umount2 resumed>) = 0 [pid 2631] set_robust_list(0x7fc84e07e9e0, 24 [pid 2629] <... clone resumed>, parent_tid=[2631], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2631 [pid 2631] <... set_robust_list resumed>) = 0 [pid 2630] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2629] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2631] umount2("./file0", MNT_DETACH [pid 2630] <... futex resumed>) = 0 [pid 2629] <... futex resumed>) = 0 [pid 2630] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2629] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2631] <... umount2 resumed>) = 0 [pid 2631] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2629] <... futex resumed>) = 0 [pid 2631] <... futex resumed>) = 1 [pid 2629] exit_group(0 [pid 2631] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2629] <... exit_group resumed>) = ? [pid 2630] <... futex resumed>) = ? [pid 2631] <... futex resumed>) = ? [pid 2630] +++ exited with 0 +++ [pid 2631] +++ exited with 0 +++ [pid 2629] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2629, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2632 ./strace-static-x86_64: Process 2632 attached [pid 2632] set_robust_list(0x5555564465e0, 24) = 0 [pid 2632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2632] setpgid(0, 0) = 0 [pid 2632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2632] write(3, "1000", 4) = 4 [pid 2632] close(3) = 0 [pid 2632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2632] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2632] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2633 attached , parent_tid=[2633], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2633 [pid 2633] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2633] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2632] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2633] <... futex resumed>) = 0 [pid 2633] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2633] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2633] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2632] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2632] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2633] <... futex resumed>) = 0 [pid 2633] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2633] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2633] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2632] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2632] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2633] <... futex resumed>) = 0 [pid 2633] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2632] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2633] <... mount resumed>) = 0 [pid 2633] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2632] <... futex resumed>) = 0 [pid 2632] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2632] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2632] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2632] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2633] umount2("./file0", MNT_DETACH [pid 2632] <... clone resumed>, parent_tid=[2634], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2634 [pid 2632] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2632] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2634 attached [pid 2634] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2634] umount2("./file0", MNT_DETACH) = 0 [pid 2634] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2632] <... futex resumed>) = 0 [pid 2634] <... futex resumed>) = 1 [pid 2634] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2633] <... umount2 resumed>) = 0 [pid 2633] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2633] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2632] exit_group(0) = ? [pid 2634] <... futex resumed>) = ? [pid 2634] +++ exited with 0 +++ [pid 2633] <... futex resumed>) = ? [pid 2633] +++ exited with 0 +++ [pid 2632] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2632, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2635 ./strace-static-x86_64: Process 2635 attached [pid 2635] set_robust_list(0x5555564465e0, 24) = 0 [pid 2635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2635] setpgid(0, 0) = 0 [pid 2635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2635] write(3, "1000", 4) = 4 [pid 2635] close(3) = 0 [pid 2635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2635] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2635] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2635] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2636 attached , parent_tid=[2636], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2636 [pid 2636] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2636] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2635] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2636] <... futex resumed>) = 0 [pid 2635] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2636] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2636] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2636] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2635] <... futex resumed>) = 0 [pid 2635] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2636] <... futex resumed>) = 0 [pid 2636] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2635] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2636] <... mount resumed>) = 0 [pid 2636] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2635] <... futex resumed>) = 0 [pid 2636] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2635] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2636] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2635] <... futex resumed>) = 0 [pid 2636] <... mount resumed>) = 0 [pid 2635] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2636] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2636] umount2("./file0", MNT_DETACH [pid 2635] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2635] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2636] <... umount2 resumed>) = 0 [pid 2635] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2636] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2635] <... mmap resumed>) = 0x7fc84e05e000 [pid 2636] <... futex resumed>) = 0 [pid 2635] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2636] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2635] <... mprotect resumed>) = 0 [pid 2635] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2637 attached , parent_tid=[2637], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2637 [pid 2637] set_robust_list(0x7fc84e07e9e0, 24 [pid 2635] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2637] <... set_robust_list resumed>) = 0 [pid 2637] umount2("./file0", MNT_DETACH [pid 2635] <... futex resumed>) = 0 [pid 2635] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2637] <... umount2 resumed>) = 0 [pid 2637] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2635] <... futex resumed>) = 0 [pid 2635] exit_group(0) = ? [pid 2637] <... futex resumed>) = ? [pid 2636] <... futex resumed>) = ? [pid 2637] +++ exited with 0 +++ [pid 2636] +++ exited with 0 +++ [pid 2635] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2635, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2638 ./strace-static-x86_64: Process 2638 attached [pid 2638] set_robust_list(0x5555564465e0, 24) = 0 [pid 2638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2638] setpgid(0, 0) = 0 [pid 2638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2638] write(3, "1000", 4) = 4 [pid 2638] close(3) = 0 [pid 2638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2638] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2638] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2639 attached , parent_tid=[2639], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2639 [pid 2639] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2639] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2638] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2639] <... futex resumed>) = 0 [pid 2638] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2639] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2639] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2638] <... futex resumed>) = 0 [pid 2638] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2638] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2639] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2639] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2638] <... futex resumed>) = 0 [pid 2639] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 2638] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2639] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2638] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2639] <... mount resumed>) = 0 [pid 2639] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2638] <... futex resumed>) = 0 [pid 2638] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2638] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2639] umount2("./file0", MNT_DETACH [pid 2638] <... futex resumed>) = 0 [pid 2638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2638] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2639] <... umount2 resumed>) = 0 [pid 2638] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2639] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2641 attached [pid 2638] <... clone resumed>, parent_tid=[2641], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2641 [pid 2638] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2638] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2639] <... futex resumed>) = 0 [pid 2639] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2641] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2641] umount2("./file0", MNT_DETACH) = 0 [pid 2641] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2638] <... futex resumed>) = 0 [pid 2638] exit_group(0 [pid 2639] <... futex resumed>) = ? [pid 2639] +++ exited with 0 +++ [pid 2638] <... exit_group resumed>) = ? [pid 2641] +++ exited with 0 +++ [pid 2638] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2638, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2642 attached , child_tidptr=0x5555564465d0) = 2642 [pid 2642] set_robust_list(0x5555564465e0, 24) = 0 [pid 2642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2642] setpgid(0, 0) = 0 [pid 2642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2642] write(3, "1000", 4) = 4 [pid 2642] close(3) = 0 [pid 2642] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2642] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2642] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2643 attached , parent_tid=[2643], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2643 [pid 2643] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2643] <... futex resumed>) = 0 [pid 2643] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2643] <... futex resumed>) = 0 [pid 2643] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2643] <... futex resumed>) = 0 [pid 2643] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2643] <... mount resumed>) = 0 [pid 2643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2643] <... futex resumed>) = 0 [pid 2643] umount2("./file0", MNT_DETACH [pid 2642] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2643] <... umount2 resumed>) = 0 [pid 2643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2642] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2642] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2644], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2644 ./strace-static-x86_64: Process 2644 attached [pid 2644] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2644] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2644] <... futex resumed>) = 0 [pid 2644] umount2("./file0", MNT_DETACH [pid 2642] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2644] <... umount2 resumed>) = 0 [pid 2644] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2642] <... futex resumed>) = 0 [pid 2642] exit_group(0 [pid 2644] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2642] <... exit_group resumed>) = ? [pid 2643] <... futex resumed>) = ? [pid 2643] +++ exited with 0 +++ [pid 2644] <... futex resumed>) = ? [pid 2644] +++ exited with 0 +++ [pid 2642] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2642, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2645 ./strace-static-x86_64: Process 2645 attached [pid 2645] set_robust_list(0x5555564465e0, 24) = 0 [pid 2645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2645] setpgid(0, 0) = 0 [pid 2645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2645] write(3, "1000", 4) = 4 [pid 2645] close(3) = 0 [pid 2645] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2645] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2645] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2646 attached [pid 2646] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2645] <... clone resumed>, parent_tid=[2646], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2646 [pid 2645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2646] <... futex resumed>) = 0 [pid 2646] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2646] <... futex resumed>) = 0 [pid 2645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2646] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2645] <... futex resumed>) = 0 [pid 2646] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2646] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2646] <... mount resumed>) = 0 [pid 2646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2645] <... futex resumed>) = 0 [pid 2645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2645] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2645] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2645] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2647], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2647 [pid 2645] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2645] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2646] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2647 attached [pid 2647] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2647] umount2("./file0", MNT_DETACH) = 0 [pid 2647] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2645] <... futex resumed>) = 0 [pid 2647] <... futex resumed>) = 1 [pid 2647] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2646] <... umount2 resumed>) = 0 [pid 2646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2645] exit_group(0) = ? [pid 2647] <... futex resumed>) = ? [pid 2646] <... futex resumed>) = ? [pid 2647] +++ exited with 0 +++ [pid 2646] +++ exited with 0 +++ [pid 2645] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2645, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2648 ./strace-static-x86_64: Process 2648 attached [pid 2648] set_robust_list(0x5555564465e0, 24) = 0 [pid 2648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2648] setpgid(0, 0) = 0 [pid 2648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2648] write(3, "1000", 4) = 4 [pid 2648] close(3) = 0 [pid 2648] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2648] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2648] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2649 attached [pid 2649] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2649] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2648] <... clone resumed>, parent_tid=[2649], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2649 [pid 2648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2649] <... futex resumed>) = 0 [pid 2649] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2648] <... futex resumed>) = 0 [pid 2648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2649] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2648] <... futex resumed>) = 0 [pid 2648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2649] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2648] <... futex resumed>) = 0 [pid 2648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2648] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2648] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2648] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2650], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2650 [pid 2648] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2648] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2649] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2650 attached ) = 0 [pid 2649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2649] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2650] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2650] umount2("./file0", MNT_DETACH) = 0 [pid 2650] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2648] <... futex resumed>) = 0 [pid 2648] exit_group(0) = ? [pid 2649] <... futex resumed>) = ? [pid 2649] +++ exited with 0 +++ [pid 2650] +++ exited with 0 +++ [pid 2648] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2648, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2651 ./strace-static-x86_64: Process 2651 attached [pid 2651] set_robust_list(0x5555564465e0, 24) = 0 [pid 2651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2651] setpgid(0, 0) = 0 [pid 2651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2651] write(3, "1000", 4) = 4 [pid 2651] close(3) = 0 [pid 2651] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2651] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2651] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2652], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2652 [pid 2651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2652 attached [pid 2652] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2652] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2651] <... futex resumed>) = 0 [pid 2651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2652] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2651] <... futex resumed>) = 0 [pid 2651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2652] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2651] <... futex resumed>) = 0 [pid 2651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2651] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2651] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2653], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2653 [pid 2651] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2651] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2653 attached [pid 2653] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2653] umount2("./file0", MNT_DETACH [pid 2652] umount2("./file0", MNT_DETACH [pid 2653] <... umount2 resumed>) = 0 [pid 2653] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2651] <... futex resumed>) = 0 [pid 2653] <... futex resumed>) = 1 [pid 2653] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2652] <... umount2 resumed>) = 0 [pid 2652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2651] exit_group(0 [pid 2653] <... futex resumed>) = 231 [pid 2651] <... exit_group resumed>) = ? [pid 2652] <... futex resumed>) = ? [pid 2652] +++ exited with 0 +++ [pid 2653] +++ exited with 0 +++ [pid 2651] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2651, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2654 ./strace-static-x86_64: Process 2654 attached [pid 2654] set_robust_list(0x5555564465e0, 24) = 0 [pid 2654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2654] setpgid(0, 0) = 0 [pid 2654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2654] write(3, "1000", 4) = 4 [pid 2654] close(3) = 0 [pid 2654] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2654] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2654] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2655], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2655 ./strace-static-x86_64: Process 2655 attached [pid 2654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2655] set_robust_list(0x7fc84e09f9e0, 24 [pid 2654] <... futex resumed>) = 0 [pid 2655] <... set_robust_list resumed>) = 0 [pid 2655] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2655] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2654] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2655] <... futex resumed>) = 0 [pid 2655] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2655] <... mount resumed>) = 0 [pid 2655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2655] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2654] <... futex resumed>) = 0 [pid 2654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2655] <... futex resumed>) = 0 [pid 2654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2655] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2655] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2654] <... futex resumed>) = 0 [pid 2654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2654] <... futex resumed>) = 0 [pid 2655] umount2("./file0", MNT_DETACH [pid 2654] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2654] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2654] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2655] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2656 attached [pid 2655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2654] <... clone resumed>, parent_tid=[2656], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2656 [pid 2655] <... futex resumed>) = 0 [pid 2654] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2655] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2654] <... futex resumed>) = 0 [pid 2654] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2656] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2656] umount2("./file0", MNT_DETACH) = 0 [pid 2656] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2654] <... futex resumed>) = 0 [pid 2654] exit_group(0) = ? [pid 2655] <... futex resumed>) = ? [pid 2655] +++ exited with 0 +++ [pid 2656] +++ exited with 0 +++ [pid 2654] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2654, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2657 attached , child_tidptr=0x5555564465d0) = 2657 [pid 2657] set_robust_list(0x5555564465e0, 24) = 0 [pid 2657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2657] setpgid(0, 0) = 0 [pid 2657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2657] write(3, "1000", 4) = 4 [pid 2657] close(3) = 0 [pid 2657] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2657] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2657] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2658 attached [pid 2658] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] <... clone resumed>, parent_tid=[2658], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2658 [pid 2657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2658] <... futex resumed>) = 0 [pid 2657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2658] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2658] <... futex resumed>) = 0 [pid 2658] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2658] <... mount resumed>) = 0 [pid 2658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] <... futex resumed>) = 0 [pid 2657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2658] <... futex resumed>) = 0 [pid 2658] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2658] <... mount resumed>) = 0 [pid 2658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] <... futex resumed>) = 0 [pid 2657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2658] <... futex resumed>) = 0 [pid 2658] umount2("./file0", MNT_DETACH [pid 2657] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2658] <... umount2 resumed>) = 0 [pid 2657] <... futex resumed>) = 0 [pid 2658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2657] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2657] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2659 attached , parent_tid=[2659], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2659 [pid 2659] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2659] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2659] <... futex resumed>) = 0 [pid 2659] umount2("./file0", MNT_DETACH [pid 2657] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2659] <... umount2 resumed>) = 0 [pid 2659] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2659] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2657] exit_group(0 [pid 2658] <... futex resumed>) = ? [pid 2657] <... exit_group resumed>) = ? [pid 2658] +++ exited with 0 +++ [pid 2659] <... futex resumed>) = ? [pid 2659] +++ exited with 0 +++ [pid 2657] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2657, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2660 ./strace-static-x86_64: Process 2660 attached [pid 2660] set_robust_list(0x5555564465e0, 24) = 0 [pid 2660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2660] setpgid(0, 0) = 0 [pid 2660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2660] write(3, "1000", 4) = 4 [pid 2660] close(3) = 0 [pid 2660] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2660] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2660] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2661 attached , parent_tid=[2661], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2661 [pid 2661] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2661] <... futex resumed>) = 0 [pid 2660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2661] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2660] <... futex resumed>) = 0 [pid 2661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2661] <... futex resumed>) = 0 [pid 2661] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2661] <... mount resumed>) = 0 [pid 2661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2660] <... futex resumed>) = 0 [pid 2660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2661] <... futex resumed>) = 0 [pid 2661] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2661] <... mount resumed>) = 0 [pid 2661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2660] <... futex resumed>) = 0 [pid 2661] umount2("./file0", MNT_DETACH [pid 2660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2660] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2660] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2661] <... umount2 resumed>) = 0 [pid 2660] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2660] <... clone resumed>, parent_tid=[2662], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2662 ./strace-static-x86_64: Process 2662 attached [pid 2660] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2662] set_robust_list(0x7fc84e07e9e0, 24 [pid 2660] <... futex resumed>) = 0 [pid 2662] <... set_robust_list resumed>) = 0 [pid 2662] umount2("./file0", MNT_DETACH [pid 2660] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2662] <... umount2 resumed>) = 0 [pid 2662] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2660] <... futex resumed>) = 0 [pid 2662] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2660] exit_group(0) = ? [pid 2661] <... futex resumed>) = ? [pid 2661] +++ exited with 0 +++ [pid 2662] <... futex resumed>) = ? [pid 2662] +++ exited with 0 +++ [pid 2660] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2660, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2663 attached , child_tidptr=0x5555564465d0) = 2663 [pid 2663] set_robust_list(0x5555564465e0, 24) = 0 [pid 2663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2663] setpgid(0, 0) = 0 [pid 2663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2663] write(3, "1000", 4) = 4 [pid 2663] close(3) = 0 [pid 2663] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2663] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2663] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2664], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2664 [pid 2663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2664 attached [pid 2664] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2664] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2663] <... futex resumed>) = 0 [pid 2663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2664] <... futex resumed>) = 1 [pid 2664] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2663] <... futex resumed>) = 0 [pid 2663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2664] <... futex resumed>) = 1 [pid 2664] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2663] <... futex resumed>) = 0 [pid 2663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2663] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2663] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2665], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2665 [pid 2663] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2663] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2664] <... futex resumed>) = 1 [pid 2664] umount2("./file0", MNT_DETACH) = 0 [pid 2664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2665 attached [pid 2665] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2665] umount2("./file0", MNT_DETACH) = 0 [pid 2665] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2663] <... futex resumed>) = 0 [pid 2663] exit_group(0) = ? [pid 2665] <... futex resumed>) = ? [pid 2664] <... futex resumed>) = ? [pid 2664] +++ exited with 0 +++ [pid 2665] +++ exited with 0 +++ [pid 2663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2666 ./strace-static-x86_64: Process 2666 attached [pid 2666] set_robust_list(0x5555564465e0, 24) = 0 [pid 2666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2666] setpgid(0, 0) = 0 [pid 2666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2666] write(3, "1000", 4) = 4 [pid 2666] close(3) = 0 [pid 2666] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2666] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2666] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2667 attached , parent_tid=[2667], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2667 [pid 2666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2667] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2667] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2666] <... futex resumed>) = 0 [pid 2667] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2667] <... mount resumed>) = 0 [pid 2667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2666] <... futex resumed>) = 0 [pid 2667] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2667] <... mount resumed>) = 0 [pid 2667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2666] <... futex resumed>) = 0 [pid 2667] umount2("./file0", MNT_DETACH [pid 2666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2666] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2666] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2667] <... umount2 resumed>) = 0 [pid 2666] <... mprotect resumed>) = 0 [pid 2667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2666] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2667] <... futex resumed>) = 0 [pid 2667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2668 attached [pid 2666] <... clone resumed>, parent_tid=[2668], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2668 [pid 2668] set_robust_list(0x7fc84e07e9e0, 24 [pid 2666] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2668] <... set_robust_list resumed>) = 0 [pid 2666] <... futex resumed>) = 0 [pid 2668] umount2("./file0", MNT_DETACH [pid 2666] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2668] <... umount2 resumed>) = 0 [pid 2668] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2666] <... futex resumed>) = 0 [pid 2668] <... futex resumed>) = 1 [pid 2666] exit_group(0 [pid 2668] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2667] <... futex resumed>) = ? [pid 2666] <... exit_group resumed>) = ? [pid 2668] <... futex resumed>) = ? [pid 2667] +++ exited with 0 +++ [pid 2668] +++ exited with 0 +++ [pid 2666] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2666, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2669 ./strace-static-x86_64: Process 2669 attached [pid 2669] set_robust_list(0x5555564465e0, 24) = 0 [pid 2669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2669] setpgid(0, 0) = 0 [pid 2669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2669] write(3, "1000", 4) = 4 [pid 2669] close(3) = 0 [pid 2669] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2669] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2669] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2670], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2670 ./strace-static-x86_64: Process 2670 attached [pid 2669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2670] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2670] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2669] <... futex resumed>) = 0 [pid 2669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2670] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2669] <... futex resumed>) = 0 [pid 2669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2670] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2669] <... futex resumed>) = 0 [pid 2669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2669] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2669] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2671], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2671 [pid 2669] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2669] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2670] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2671 attached [pid 2671] set_robust_list(0x7fc84e07e9e0, 24 [pid 2670] <... umount2 resumed>) = 0 [pid 2671] <... set_robust_list resumed>) = 0 [pid 2670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2671] umount2("./file0", MNT_DETACH [pid 2670] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2671] <... umount2 resumed>) = 0 [pid 2671] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2669] <... futex resumed>) = 0 [pid 2669] exit_group(0) = ? [pid 2670] <... futex resumed>) = ? [pid 2670] +++ exited with 0 +++ [pid 2671] +++ exited with 0 +++ [pid 2669] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2669, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2672 ./strace-static-x86_64: Process 2672 attached [pid 2672] set_robust_list(0x5555564465e0, 24) = 0 [pid 2672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2672] setpgid(0, 0) = 0 [pid 2672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2672] write(3, "1000", 4) = 4 [pid 2672] close(3) = 0 [pid 2672] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2672] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2672] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2673 attached , parent_tid=[2673], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2673 [pid 2673] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2673] <... futex resumed>) = 0 [pid 2673] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2672] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2673] <... futex resumed>) = 0 [pid 2673] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2673] <... futex resumed>) = 0 [pid 2673] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2673] <... mount resumed>) = 0 [pid 2673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2672] <... futex resumed>) = 0 [pid 2672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2673] <... futex resumed>) = 0 [pid 2672] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2673] umount2("./file0", MNT_DETACH [pid 2672] <... futex resumed>) = 0 [pid 2672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2673] <... umount2 resumed>) = 0 [pid 2672] <... mmap resumed>) = 0x7fc84e05e000 [pid 2673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2672] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2673] <... futex resumed>) = 0 [pid 2673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2672] <... mprotect resumed>) = 0 [pid 2672] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2674 attached , parent_tid=[2674], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2674 [pid 2672] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2672] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2674] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2674] umount2("./file0", MNT_DETACH) = 0 [pid 2674] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2672] <... futex resumed>) = 0 [pid 2672] exit_group(0) = ? [pid 2673] <... futex resumed>) = ? [pid 2674] +++ exited with 0 +++ [pid 2673] +++ exited with 0 +++ [pid 2672] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2672, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2675 ./strace-static-x86_64: Process 2675 attached [pid 2675] set_robust_list(0x5555564465e0, 24) = 0 [pid 2675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2675] setpgid(0, 0) = 0 [pid 2675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2675] write(3, "1000", 4) = 4 [pid 2675] close(3) = 0 [pid 2675] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2675] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2675] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2675] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2676 attached , parent_tid=[2676], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2676 [pid 2676] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2676] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2676] <... futex resumed>) = 0 [pid 2676] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2676] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2676] <... futex resumed>) = 0 [pid 2676] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2676] <... mount resumed>) = 0 [pid 2676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2676] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] <... futex resumed>) = 0 [pid 2675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2676] <... futex resumed>) = 0 [pid 2676] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2676] <... mount resumed>) = 0 [pid 2676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2676] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] <... futex resumed>) = 0 [pid 2675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2676] <... futex resumed>) = 0 [pid 2676] umount2("./file0", MNT_DETACH [pid 2675] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2676] <... umount2 resumed>) = 0 [pid 2676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2676] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] <... futex resumed>) = 0 [pid 2675] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2675] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2675] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2677], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2677 ./strace-static-x86_64: Process 2677 attached [pid 2677] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2677] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2677] <... futex resumed>) = 0 [pid 2677] umount2("./file0", MNT_DETACH [pid 2675] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2677] <... umount2 resumed>) = 0 [pid 2677] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2677] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2675] exit_group(0 [pid 2676] <... futex resumed>) = ? [pid 2675] <... exit_group resumed>) = ? [pid 2676] +++ exited with 0 +++ [pid 2677] <... futex resumed>) = ? [pid 2677] +++ exited with 0 +++ [pid 2675] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2675, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2678 ./strace-static-x86_64: Process 2678 attached [pid 2678] set_robust_list(0x5555564465e0, 24) = 0 [pid 2678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2678] setpgid(0, 0) = 0 [pid 2678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2678] write(3, "1000", 4) = 4 [pid 2678] close(3) = 0 [pid 2678] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2678] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2678] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2679], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2679 [pid 2678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2679 attached [pid 2679] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2679] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2678] <... futex resumed>) = 0 [pid 2679] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2679] <... mount resumed>) = 0 [pid 2679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2678] <... futex resumed>) = 0 [pid 2678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2679] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2679] <... mount resumed>) = 0 [pid 2679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2678] <... futex resumed>) = 0 [pid 2678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2678] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2678] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2679] umount2("./file0", MNT_DETACH [pid 2678] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2680], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2680 ./strace-static-x86_64: Process 2680 attached [pid 2679] <... umount2 resumed>) = 0 [pid 2678] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2680] set_robust_list(0x7fc84e07e9e0, 24 [pid 2679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2680] <... set_robust_list resumed>) = 0 [pid 2678] <... futex resumed>) = 0 [pid 2679] <... futex resumed>) = 0 [pid 2680] umount2("./file0", MNT_DETACH [pid 2678] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2679] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2680] <... umount2 resumed>) = 0 [pid 2680] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2678] <... futex resumed>) = 0 [pid 2680] <... futex resumed>) = 1 [pid 2678] exit_group(0 [pid 2680] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2678] <... exit_group resumed>) = ? [pid 2679] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2680] <... futex resumed>) = ? [pid 2679] +++ exited with 0 +++ [pid 2680] +++ exited with 0 +++ [pid 2678] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2678, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2681 ./strace-static-x86_64: Process 2681 attached [pid 2681] set_robust_list(0x5555564465e0, 24) = 0 [pid 2681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2681] setpgid(0, 0) = 0 [pid 2681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2681] write(3, "1000", 4) = 4 [pid 2681] close(3) = 0 [pid 2681] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2681] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2681] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2682 attached , parent_tid=[2682], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2682 [pid 2681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2682] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2682] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2681] <... futex resumed>) = 0 [pid 2681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2682] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2681] <... futex resumed>) = 0 [pid 2681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2682] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2681] <... futex resumed>) = 0 [pid 2681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2681] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2681] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2682] umount2("./file0", MNT_DETACH [pid 2681] <... clone resumed>, parent_tid=[2683], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2683 [pid 2681] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2681] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2683 attached [pid 2683] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2683] umount2("./file0", MNT_DETACH) = 0 [pid 2683] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2681] <... futex resumed>) = 0 [pid 2683] <... futex resumed>) = 1 [pid 2683] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2682] <... umount2 resumed>) = 0 [pid 2682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2681] exit_group(0) = ? [pid 2682] <... futex resumed>) = ? [pid 2682] +++ exited with 0 +++ [pid 2683] <... futex resumed>) = ? [pid 2683] +++ exited with 0 +++ [pid 2681] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2681, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2684 attached [pid 2684] set_robust_list(0x5555564465e0, 24) = 0 [pid 2684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 2684 [pid 2684] setpgid(0, 0) = 0 [pid 2684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2684] write(3, "1000", 4) = 4 [pid 2684] close(3) = 0 [pid 2684] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2684] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2684] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2685 attached [pid 2685] set_robust_list(0x7fc84e09f9e0, 24 [pid 2684] <... clone resumed>, parent_tid=[2685], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2685 [pid 2685] <... set_robust_list resumed>) = 0 [pid 2684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2685] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2684] <... futex resumed>) = 0 [pid 2685] <... futex resumed>) = 1 [pid 2684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2685] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2684] <... futex resumed>) = 0 [pid 2684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2685] <... mount resumed>) = 0 [pid 2685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2684] <... futex resumed>) = 0 [pid 2684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2685] <... futex resumed>) = 1 [pid 2685] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2684] <... futex resumed>) = 0 [pid 2684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2684] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2684] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2684] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2686 attached , parent_tid=[2686], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2686 [pid 2684] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2684] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2685] <... futex resumed>) = 1 [pid 2685] umount2("./file0", MNT_DETACH [pid 2686] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2685] <... umount2 resumed>) = 0 [pid 2686] umount2("./file0", MNT_DETACH [pid 2685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2685] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2686] <... umount2 resumed>) = 0 [pid 2686] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2684] <... futex resumed>) = 0 [pid 2686] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2684] exit_group(0) = ? [pid 2685] <... futex resumed>) = ? [pid 2686] <... futex resumed>) = ? [pid 2685] +++ exited with 0 +++ [pid 2686] +++ exited with 0 +++ [pid 2684] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2684, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2687 ./strace-static-x86_64: Process 2687 attached [pid 2687] set_robust_list(0x5555564465e0, 24) = 0 [pid 2687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2687] setpgid(0, 0) = 0 [pid 2687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2687] write(3, "1000", 4) = 4 [pid 2687] close(3) = 0 [pid 2687] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2687] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2687] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2688], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2688 [pid 2687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2688 attached [pid 2688] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2688] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2687] <... futex resumed>) = 0 [pid 2687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2688] <... futex resumed>) = 1 [pid 2688] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2687] <... futex resumed>) = 0 [pid 2687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2688] <... futex resumed>) = 1 [pid 2688] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2687] <... futex resumed>) = 0 [pid 2688] <... futex resumed>) = 1 [pid 2687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2688] umount2("./file0", MNT_DETACH [pid 2687] <... futex resumed>) = 0 [pid 2687] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2687] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2688] <... umount2 resumed>) = 0 [pid 2687] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2689 attached [pid 2687] <... clone resumed>, parent_tid=[2689], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2689 [pid 2688] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2687] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2687] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2689] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2689] umount2("./file0", MNT_DETACH) = 0 [pid 2689] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2687] <... futex resumed>) = 0 [pid 2687] exit_group(0) = ? [pid 2689] +++ exited with 0 +++ [pid 2688] <... futex resumed>) = ? [pid 2688] +++ exited with 0 +++ [pid 2687] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2687, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2690 ./strace-static-x86_64: Process 2690 attached [pid 2690] set_robust_list(0x5555564465e0, 24) = 0 [pid 2690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2690] setpgid(0, 0) = 0 [pid 2690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2690] write(3, "1000", 4) = 4 [pid 2690] close(3) = 0 [pid 2690] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2690] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2690] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2691 attached [pid 2691] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2691] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2690] <... clone resumed>, parent_tid=[2691], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2691 [pid 2690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2691] <... futex resumed>) = 0 [pid 2690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2691] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2690] <... futex resumed>) = 0 [pid 2691] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2691] <... mount resumed>) = 0 [pid 2690] <... futex resumed>) = 0 [pid 2691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2691] <... futex resumed>) = 0 [pid 2690] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2691] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2691] <... mount resumed>) = 0 [pid 2691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2690] <... futex resumed>) = 0 [pid 2691] umount2("./file0", MNT_DETACH [pid 2690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2690] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2691] <... umount2 resumed>) = 0 [pid 2691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2690] <... futex resumed>) = 0 [pid 2691] <... futex resumed>) = 0 [pid 2690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2691] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2690] <... mmap resumed>) = 0x7fc84e05e000 [pid 2690] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2690] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2692 attached , parent_tid=[2692], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2692 [pid 2690] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2690] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2692] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2692] umount2("./file0", MNT_DETACH) = 0 [pid 2692] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2690] <... futex resumed>) = 0 [pid 2690] exit_group(0) = ? [pid 2691] <... futex resumed>) = ? [pid 2691] +++ exited with 0 +++ [pid 2692] +++ exited with 0 +++ [pid 2690] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2693 ./strace-static-x86_64: Process 2693 attached [pid 2693] set_robust_list(0x5555564465e0, 24) = 0 [pid 2693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2693] setpgid(0, 0) = 0 [pid 2693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2693] write(3, "1000", 4) = 4 [pid 2693] close(3) = 0 [pid 2693] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2693] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2693] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2694 attached , parent_tid=[2694], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2694 [pid 2693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2694] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2694] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2693] <... futex resumed>) = 0 [pid 2694] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2694] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2693] <... futex resumed>) = 0 [pid 2694] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2694] <... mount resumed>) = 0 [pid 2694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2693] <... futex resumed>) = 0 [pid 2694] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2694] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2694] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2693] <... futex resumed>) = 0 [pid 2693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2693] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2694] umount2("./file0", MNT_DETACH [pid 2693] <... futex resumed>) = 0 [pid 2693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2693] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2693] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2695], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2695 [pid 2693] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2695 attached ) = 0 [pid 2695] set_robust_list(0x7fc84e07e9e0, 24 [pid 2693] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2695] <... set_robust_list resumed>) = 0 [pid 2695] umount2("./file0", MNT_DETACH [pid 2694] <... umount2 resumed>) = 0 [pid 2695] <... umount2 resumed>) = 0 [pid 2694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2695] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2693] <... futex resumed>) = 0 [pid 2693] exit_group(0) = ? [pid 2694] <... futex resumed>) = 231 [pid 2695] <... futex resumed>) = ? [pid 2695] +++ exited with 0 +++ [pid 2694] +++ exited with 0 +++ [pid 2693] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2693, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2696 attached , child_tidptr=0x5555564465d0) = 2696 [pid 2696] set_robust_list(0x5555564465e0, 24) = 0 [pid 2696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2696] setpgid(0, 0) = 0 [pid 2696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2696] write(3, "1000", 4) = 4 [pid 2696] close(3) = 0 [pid 2696] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2696] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2696] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2697 attached , parent_tid=[2697], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2697 [pid 2697] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2697] <... futex resumed>) = 0 [pid 2697] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2697] <... futex resumed>) = 0 [pid 2697] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2697] <... mount resumed>) = 0 [pid 2697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2697] <... futex resumed>) = 0 [pid 2697] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2697] <... mount resumed>) = 0 [pid 2697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] <... futex resumed>) = 0 [pid 2696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2697] <... futex resumed>) = 0 [pid 2697] umount2("./file0", MNT_DETACH [pid 2696] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2697] <... umount2 resumed>) = 0 [pid 2697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2696] <... futex resumed>) = 0 [pid 2697] <... futex resumed>) = 0 [pid 2697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2696] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2696] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2698 attached , parent_tid=[2698], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2698 [pid 2698] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2698] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2698] <... futex resumed>) = 0 [pid 2698] umount2("./file0", MNT_DETACH [pid 2696] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2698] <... umount2 resumed>) = 0 [pid 2698] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2698] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2696] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2696] exit_group(0 [pid 2697] <... futex resumed>) = ? [pid 2696] <... exit_group resumed>) = ? [pid 2697] +++ exited with 0 +++ [pid 2698] <... futex resumed>) = ? [pid 2698] +++ exited with 0 +++ [pid 2696] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2699 ./strace-static-x86_64: Process 2699 attached [pid 2699] set_robust_list(0x5555564465e0, 24) = 0 [pid 2699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2699] setpgid(0, 0) = 0 [pid 2699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2699] write(3, "1000", 4) = 4 [pid 2699] close(3) = 0 [pid 2699] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2699] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2699] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2699] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2700], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2700 [pid 2699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2699] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2700 attached [pid 2700] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2700] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2699] <... futex resumed>) = 0 [pid 2700] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2700] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2699] <... futex resumed>) = 0 [pid 2700] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2699] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2700] <... mount resumed>) = 0 [pid 2700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2699] <... futex resumed>) = 0 [pid 2699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2699] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2700] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2699] <... futex resumed>) = 0 [pid 2699] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2699] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2699] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2700] umount2("./file0", MNT_DETACH [pid 2699] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2699] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2701 attached [pid 2701] set_robust_list(0x7fc84e07e9e0, 24 [pid 2699] <... clone resumed>, parent_tid=[2701], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2701 [pid 2701] <... set_robust_list resumed>) = 0 [pid 2699] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2700] <... umount2 resumed>) = 0 [pid 2699] <... futex resumed>) = 0 [pid 2701] umount2("./file0", MNT_DETACH [pid 2700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2699] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2700] <... futex resumed>) = 0 [pid 2700] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2701] <... umount2 resumed>) = 0 [pid 2701] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2701] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2699] <... futex resumed>) = 0 [pid 2699] exit_group(0) = ? [pid 2700] <... futex resumed>) = ? [pid 2700] +++ exited with 0 +++ [pid 2701] <... futex resumed>) = ? [pid 2701] +++ exited with 0 +++ [pid 2699] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2699, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2702 ./strace-static-x86_64: Process 2702 attached [pid 2702] set_robust_list(0x5555564465e0, 24) = 0 [pid 2702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2702] setpgid(0, 0) = 0 [pid 2702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2702] write(3, "1000", 4) = 4 [pid 2702] close(3) = 0 [pid 2702] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2702] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2702] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2703], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2703 [pid 2702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2703 attached [pid 2703] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2703] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2702] <... futex resumed>) = 0 [pid 2702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2703] <... futex resumed>) = 1 [pid 2703] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2702] <... futex resumed>) = 0 [pid 2703] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2703] <... mount resumed>) = 0 [pid 2703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2702] <... futex resumed>) = 0 [pid 2702] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2702] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2702] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2704 attached [pid 2703] umount2("./file0", MNT_DETACH [pid 2702] <... clone resumed>, parent_tid=[2704], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2704 [pid 2702] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2702] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2704] set_robust_list(0x7fc84e07e9e0, 24 [pid 2703] <... umount2 resumed>) = 0 [pid 2704] <... set_robust_list resumed>) = 0 [pid 2703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2704] umount2("./file0", MNT_DETACH [pid 2703] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2704] <... umount2 resumed>) = 0 [pid 2704] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2702] <... futex resumed>) = 0 [pid 2702] exit_group(0) = ? [pid 2703] <... futex resumed>) = ? [pid 2703] +++ exited with 0 +++ [pid 2704] +++ exited with 0 +++ [pid 2702] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2702, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2705 ./strace-static-x86_64: Process 2705 attached [pid 2705] set_robust_list(0x5555564465e0, 24) = 0 [pid 2705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2705] setpgid(0, 0) = 0 [pid 2705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2705] write(3, "1000", 4) = 4 [pid 2705] close(3) = 0 [pid 2705] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2705] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2705] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2706 attached , parent_tid=[2706], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2706 [pid 2706] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2706] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2706] <... futex resumed>) = 0 [pid 2705] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2706] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2705] <... futex resumed>) = 0 [pid 2706] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2706] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2705] <... futex resumed>) = 0 [pid 2706] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2705] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2706] <... mount resumed>) = 0 [pid 2706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2705] <... futex resumed>) = 0 [pid 2706] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2706] <... mount resumed>) = 0 [pid 2705] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2705] <... futex resumed>) = 0 [pid 2705] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2705] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2705] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2705] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2706] umount2("./file0", MNT_DETACH [pid 2705] <... clone resumed>, parent_tid=[2707], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2707 [pid 2705] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2707 attached [pid 2705] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2706] <... umount2 resumed>) = 0 [pid 2707] set_robust_list(0x7fc84e07e9e0, 24 [pid 2706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2707] <... set_robust_list resumed>) = 0 [pid 2706] <... futex resumed>) = 0 [pid 2707] umount2("./file0", MNT_DETACH [pid 2706] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2707] <... umount2 resumed>) = 0 [pid 2707] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2705] <... futex resumed>) = 0 [pid 2705] exit_group(0) = ? [pid 2706] <... futex resumed>) = 230 [pid 2706] +++ exited with 0 +++ [pid 2707] +++ exited with 0 +++ [pid 2705] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2705, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2708 ./strace-static-x86_64: Process 2708 attached [pid 2708] set_robust_list(0x5555564465e0, 24) = 0 [pid 2708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2708] setpgid(0, 0) = 0 [pid 2708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2708] write(3, "1000", 4) = 4 [pid 2708] close(3) = 0 [pid 2708] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2708] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2708] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2709 attached , parent_tid=[2709], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2709 [pid 2708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2708] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2709] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2709] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2708] <... futex resumed>) = 0 [pid 2709] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2709] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2708] <... futex resumed>) = 0 [pid 2708] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2709] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2708] <... futex resumed>) = 0 [pid 2708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2709] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2708] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2709] <... mount resumed>) = 0 [pid 2709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2708] <... futex resumed>) = 0 [pid 2708] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2708] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2708] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2709] umount2("./file0", MNT_DETACH [pid 2708] <... mprotect resumed>) = 0 [pid 2708] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2710], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2710 [pid 2708] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2708] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2710 attached [pid 2710] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2710] umount2("./file0", MNT_DETACH) = 0 [pid 2710] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2708] <... futex resumed>) = 0 [pid 2709] <... umount2 resumed>) = 0 [pid 2710] <... futex resumed>) = 1 [pid 2710] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2709] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2708] exit_group(0) = ? [pid 2709] <... futex resumed>) = ? [pid 2710] <... futex resumed>) = ? [pid 2710] +++ exited with 0 +++ [pid 2709] +++ exited with 0 +++ [pid 2708] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2708, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2711 attached , child_tidptr=0x5555564465d0) = 2711 [pid 2711] set_robust_list(0x5555564465e0, 24) = 0 [pid 2711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2711] setpgid(0, 0) = 0 [pid 2711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2711] write(3, "1000", 4) = 4 [pid 2711] close(3) = 0 [pid 2711] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2711] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2711] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2712 attached , parent_tid=[2712], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2712 [pid 2712] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2712] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2712] <... futex resumed>) = 0 [pid 2712] mkdir("./file0", 000 [pid 2711] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2712] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2712] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2711] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2712] <... futex resumed>) = 0 [pid 2711] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2712] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2711] <... futex resumed>) = 0 [pid 2712] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2711] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2712] <... mount resumed>) = 0 [pid 2712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2711] <... futex resumed>) = 0 [pid 2712] umount2("./file0", MNT_DETACH [pid 2711] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2712] <... umount2 resumed>) = 0 [pid 2711] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2711] <... futex resumed>) = 0 [pid 2712] <... futex resumed>) = 0 [pid 2711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2712] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2711] <... mmap resumed>) = 0x7fc84e05e000 [pid 2711] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2711] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2713 attached , parent_tid=[2713], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2713 [pid 2713] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2713] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2711] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2713] <... futex resumed>) = 0 [pid 2713] umount2("./file0", MNT_DETACH [pid 2711] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2713] <... umount2 resumed>) = 0 [pid 2713] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2711] <... futex resumed>) = 0 [pid 2711] exit_group(0) = ? [pid 2712] <... futex resumed>) = ? [pid 2712] +++ exited with 0 +++ [pid 2713] +++ exited with 0 +++ [pid 2711] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2711, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2714 ./strace-static-x86_64: Process 2714 attached [pid 2714] set_robust_list(0x5555564465e0, 24) = 0 [pid 2714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2714] setpgid(0, 0) = 0 [pid 2714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2714] write(3, "1000", 4) = 4 [pid 2714] close(3) = 0 [pid 2714] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2714] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2714] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2715 attached , parent_tid=[2715], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2715 [pid 2715] set_robust_list(0x7fc84e09f9e0, 24 [pid 2714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2715] <... set_robust_list resumed>) = 0 [pid 2715] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] <... futex resumed>) = 1 [pid 2715] <... futex resumed>) = 0 [pid 2715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2715] <... futex resumed>) = 0 [pid 2715] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2714] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2715] <... mount resumed>) = 0 [pid 2715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2715] <... futex resumed>) = 0 [pid 2715] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2714] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2715] <... mount resumed>) = 0 [pid 2715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] <... futex resumed>) = 0 [pid 2714] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2715] <... futex resumed>) = 0 [pid 2715] umount2("./file0", MNT_DETACH [pid 2714] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2715] <... umount2 resumed>) = 0 [pid 2715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2715] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] <... futex resumed>) = 0 [pid 2714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2714] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2714] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2716 attached , parent_tid=[2716], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2716 [pid 2716] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2716] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2716] <... futex resumed>) = 0 [pid 2716] umount2("./file0", MNT_DETACH) = 0 [pid 2716] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2716] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2714] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2714] exit_group(0 [pid 2715] <... futex resumed>) = ? [pid 2714] <... exit_group resumed>) = ? [pid 2715] +++ exited with 0 +++ [pid 2716] <... futex resumed>) = ? [pid 2716] +++ exited with 0 +++ [pid 2714] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2714, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2717 ./strace-static-x86_64: Process 2717 attached [pid 2717] set_robust_list(0x5555564465e0, 24) = 0 [pid 2717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2717] setpgid(0, 0) = 0 [pid 2717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2717] write(3, "1000", 4) = 4 [pid 2717] close(3) = 0 [pid 2717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2717] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2717] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2718 attached , parent_tid=[2718], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2718 [pid 2717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2718] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2718] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2717] <... futex resumed>) = 0 [pid 2718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2718] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2717] <... futex resumed>) = 0 [pid 2718] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2718] <... mount resumed>) = 0 [pid 2718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2717] <... futex resumed>) = 0 [pid 2717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2718] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2717] <... futex resumed>) = 0 [pid 2717] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2717] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2717] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2718] umount2("./file0", MNT_DETACH [pid 2717] <... clone resumed>, parent_tid=[2719], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2719 [pid 2717] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2719 attached [pid 2719] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2719] umount2("./file0", MNT_DETACH) = 0 [pid 2719] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2717] <... futex resumed>) = 0 [pid 2719] <... futex resumed>) = 1 [pid 2719] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2718] <... umount2 resumed>) = 0 [pid 2718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2717] exit_group(0 [pid 2718] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2717] <... exit_group resumed>) = ? [pid 2719] <... futex resumed>) = ? [pid 2719] +++ exited with 0 +++ [pid 2718] <... futex resumed>) = ? [pid 2718] +++ exited with 0 +++ [pid 2717] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2717, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2720 attached , child_tidptr=0x5555564465d0) = 2720 [pid 2720] set_robust_list(0x5555564465e0, 24) = 0 [pid 2720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2720] setpgid(0, 0) = 0 [pid 2720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2720] write(3, "1000", 4) = 4 [pid 2720] close(3) = 0 [pid 2720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2720] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2720] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2721 attached [pid 2721] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2720] <... clone resumed>, parent_tid=[2721], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2721 [pid 2720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2721] <... futex resumed>) = 0 [pid 2721] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2721] <... futex resumed>) = 0 [pid 2721] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2720] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2721] <... futex resumed>) = 0 [pid 2721] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2720] <... futex resumed>) = 0 [pid 2720] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2720] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2720] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2720] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2721] umount2("./file0", MNT_DETACH [pid 2720] <... clone resumed>, parent_tid=[2722], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2722 [pid 2720] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2720] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2722 attached [pid 2722] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2722] umount2("./file0", MNT_DETACH [pid 2721] <... umount2 resumed>) = 0 [pid 2722] <... umount2 resumed>) = 0 [pid 2721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2722] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2721] <... futex resumed>) = 0 [pid 2722] <... futex resumed>) = 1 [pid 2721] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2720] <... futex resumed>) = 0 [pid 2722] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2720] exit_group(0) = ? [pid 2722] <... futex resumed>) = ? [pid 2721] <... futex resumed>) = ? [pid 2722] +++ exited with 0 +++ [pid 2721] +++ exited with 0 +++ [pid 2720] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2720, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2723 attached , child_tidptr=0x5555564465d0) = 2723 [pid 2723] set_robust_list(0x5555564465e0, 24) = 0 [pid 2723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2723] setpgid(0, 0) = 0 [pid 2723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2723] write(3, "1000", 4) = 4 [pid 2723] close(3) = 0 [pid 2723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2723] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2723] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2724], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2724 [pid 2723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2724 attached [pid 2724] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2724] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2723] <... futex resumed>) = 0 [pid 2723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2724] <... futex resumed>) = 1 [pid 2724] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2723] <... futex resumed>) = 0 [pid 2723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2724] <... futex resumed>) = 1 [pid 2724] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2723] <... futex resumed>) = 0 [pid 2723] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2723] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2723] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2725 attached [pid 2724] umount2("./file0", MNT_DETACH [pid 2723] <... clone resumed>, parent_tid=[2725], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2725 [pid 2723] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2723] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2725] set_robust_list(0x7fc84e07e9e0, 24 [pid 2724] <... umount2 resumed>) = 0 [pid 2725] <... set_robust_list resumed>) = 0 [pid 2724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2725] umount2("./file0", MNT_DETACH [pid 2724] <... futex resumed>) = 0 [pid 2724] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2725] <... umount2 resumed>) = 0 [pid 2725] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2723] <... futex resumed>) = 0 [pid 2723] exit_group(0) = ? [pid 2724] <... futex resumed>) = ? [pid 2724] +++ exited with 0 +++ [pid 2725] +++ exited with 0 +++ [pid 2723] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2723, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2726 attached , child_tidptr=0x5555564465d0) = 2726 [pid 2726] set_robust_list(0x5555564465e0, 24) = 0 [pid 2726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2726] setpgid(0, 0) = 0 [pid 2726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2726] write(3, "1000", 4) = 4 [pid 2726] close(3) = 0 [pid 2726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2726] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2726] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2727 attached [pid 2727] set_robust_list(0x7fc84e09f9e0, 24 [pid 2726] <... clone resumed>, parent_tid=[2727], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2727 [pid 2727] <... set_robust_list resumed>) = 0 [pid 2727] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2727] <... futex resumed>) = 0 [pid 2727] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2726] <... futex resumed>) = 0 [pid 2726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2727] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2726] <... futex resumed>) = 0 [pid 2726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2726] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2727] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2727] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2726] <... futex resumed>) = 0 [pid 2726] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2726] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2726] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2726] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2728], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2728 [pid 2727] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2726] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2726] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2728 attached [pid 2728] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2728] umount2("./file0", MNT_DETACH [pid 2727] umount2("./file0", MNT_DETACH) = 0 [pid 2727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2728] <... umount2 resumed>) = 0 [pid 2728] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2726] <... futex resumed>) = 0 [pid 2726] exit_group(0) = ? [pid 2727] <... futex resumed>) = ? [pid 2728] <... futex resumed>) = ? [pid 2728] +++ exited with 0 +++ [pid 2727] +++ exited with 0 +++ [pid 2726] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2726, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2729 ./strace-static-x86_64: Process 2729 attached [pid 2729] set_robust_list(0x5555564465e0, 24) = 0 [pid 2729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2729] setpgid(0, 0) = 0 [pid 2729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2729] write(3, "1000", 4) = 4 [pid 2729] close(3) = 0 [pid 2729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2729] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2729] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2730 attached , parent_tid=[2730], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2730 [pid 2729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2730] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2730] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2729] <... futex resumed>) = 0 [pid 2729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2730] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2729] <... futex resumed>) = 0 [pid 2729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2730] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2729] <... futex resumed>) = 0 [pid 2729] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2729] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2729] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2731], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2731 [pid 2730] umount2("./file0", MNT_DETACH [pid 2729] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2729] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2731 attached [pid 2731] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2731] umount2("./file0", MNT_DETACH) = 0 [pid 2730] <... umount2 resumed>) = 0 [pid 2731] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2729] <... futex resumed>) = 0 [pid 2731] <... futex resumed>) = 1 [pid 2731] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2730] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2729] exit_group(0) = ? [pid 2731] <... futex resumed>) = 230 [pid 2731] +++ exited with 0 +++ [pid 2730] <... futex resumed>) = ? [pid 2730] +++ exited with 0 +++ [pid 2729] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2729, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2732 attached , child_tidptr=0x5555564465d0) = 2732 [pid 2732] set_robust_list(0x5555564465e0, 24) = 0 [pid 2732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2732] setpgid(0, 0) = 0 [pid 2732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2732] write(3, "1000", 4) = 4 [pid 2732] close(3) = 0 [pid 2732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2732] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2732] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2733 attached , parent_tid=[2733], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2733 [pid 2733] set_robust_list(0x7fc84e09f9e0, 24 [pid 2732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2733] <... set_robust_list resumed>) = 0 [pid 2732] <... futex resumed>) = 0 [pid 2733] mkdir("./file0", 000 [pid 2732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2733] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2732] <... futex resumed>) = 0 [pid 2732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2733] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2732] <... futex resumed>) = 0 [pid 2732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2732] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2733] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2732] <... futex resumed>) = 0 [pid 2733] umount2("./file0", MNT_DETACH [pid 2732] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2733] <... umount2 resumed>) = 0 [pid 2732] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2732] <... futex resumed>) = 0 [pid 2733] <... futex resumed>) = 0 [pid 2733] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2732] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2732] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2734 attached , parent_tid=[2734], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2734 [pid 2734] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2734] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2732] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2734] <... futex resumed>) = 0 [pid 2734] umount2("./file0", MNT_DETACH [pid 2732] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2734] <... umount2 resumed>) = 0 [pid 2734] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2734] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2732] <... futex resumed>) = 0 [pid 2732] exit_group(0 [pid 2733] <... futex resumed>) = ? [pid 2732] <... exit_group resumed>) = ? [pid 2733] +++ exited with 0 +++ [pid 2734] <... futex resumed>) = ? [pid 2734] +++ exited with 0 +++ [pid 2732] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2732, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2735 ./strace-static-x86_64: Process 2735 attached [pid 2735] set_robust_list(0x5555564465e0, 24) = 0 [pid 2735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2735] setpgid(0, 0) = 0 [pid 2735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2735] write(3, "1000", 4) = 4 [pid 2735] close(3) = 0 [pid 2735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2735] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2735] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2736 attached , parent_tid=[2736], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2736 [pid 2735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2736] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2736] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2735] <... futex resumed>) = 0 [pid 2736] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2736] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2735] <... futex resumed>) = 0 [pid 2736] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2736] <... mount resumed>) = 0 [pid 2736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2735] <... futex resumed>) = 0 [pid 2735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2735] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2736] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2735] <... futex resumed>) = 0 [pid 2735] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2735] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2735] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2735] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2736] umount2("./file0", MNT_DETACH [pid 2735] <... clone resumed>, parent_tid=[2737], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2737 [pid 2735] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2735] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2737 attached [pid 2737] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2737] umount2("./file0", MNT_DETACH [pid 2736] <... umount2 resumed>) = 0 [pid 2736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2737] <... umount2 resumed>) = 0 [pid 2736] <... futex resumed>) = 0 [pid 2737] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2735] <... futex resumed>) = 0 [pid 2737] <... futex resumed>) = 1 [pid 2735] exit_group(0 [pid 2737] ????() = 0xe7 [pid 2735] <... exit_group resumed>) = ? [pid 2737] +++ exited with 0 +++ [pid 2736] +++ exited with 0 +++ [pid 2735] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2735, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2738 ./strace-static-x86_64: Process 2738 attached [pid 2738] set_robust_list(0x5555564465e0, 24) = 0 [pid 2738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2738] setpgid(0, 0) = 0 [pid 2738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2738] write(3, "1000", 4) = 4 [pid 2738] close(3) = 0 [pid 2738] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2738] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2738] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2739 attached , parent_tid=[2739], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2739 [pid 2738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2739] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2739] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2738] <... futex resumed>) = 0 [pid 2738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2739] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2738] <... futex resumed>) = 0 [pid 2738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2739] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2738] <... futex resumed>) = 0 [pid 2738] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2738] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2738] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2740], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2740 [pid 2738] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2738] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2740 attached [pid 2740] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2740] umount2("./file0", MNT_DETACH [pid 2739] umount2("./file0", MNT_DETACH [pid 2740] <... umount2 resumed>) = 0 [pid 2740] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2738] <... futex resumed>) = 0 [pid 2740] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2739] <... umount2 resumed>) = 0 [pid 2739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2739] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2738] exit_group(0) = ? [pid 2739] <... futex resumed>) = ? [pid 2740] <... futex resumed>) = ? [pid 2739] +++ exited with 0 +++ [pid 2740] +++ exited with 0 +++ [pid 2738] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2738, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2741 ./strace-static-x86_64: Process 2741 attached [pid 2741] set_robust_list(0x5555564465e0, 24) = 0 [pid 2741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2741] setpgid(0, 0) = 0 [pid 2741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2741] write(3, "1000", 4) = 4 [pid 2741] close(3) = 0 [pid 2741] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2741] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2741] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2742], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2742 [pid 2741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2742 attached [pid 2742] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2742] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2741] <... futex resumed>) = 0 [pid 2741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2742] <... futex resumed>) = 1 [pid 2742] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2741] <... futex resumed>) = 0 [pid 2741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2741] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2742] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2741] <... futex resumed>) = 0 [pid 2742] umount2("./file0", MNT_DETACH [pid 2741] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2741] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2741] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2741] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2741] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2743], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2743 [pid 2741] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2742] <... umount2 resumed>) = 0 [pid 2741] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2743 attached [pid 2743] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2743] umount2("./file0", MNT_DETACH [pid 2742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2742] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2743] <... umount2 resumed>) = 0 [pid 2743] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2741] <... futex resumed>) = 0 [pid 2741] exit_group(0) = ? [pid 2742] <... futex resumed>) = ? [pid 2743] <... futex resumed>) = ? [pid 2743] +++ exited with 0 +++ [pid 2742] +++ exited with 0 +++ [pid 2741] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2741, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2744 attached , child_tidptr=0x5555564465d0) = 2744 [pid 2744] set_robust_list(0x5555564465e0, 24) = 0 [pid 2744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2744] setpgid(0, 0) = 0 [pid 2744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2744] write(3, "1000", 4) = 4 [pid 2744] close(3) = 0 [pid 2744] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2744] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2744] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2745 attached , parent_tid=[2745], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2745 [pid 2744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2745] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2745] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2744] <... futex resumed>) = 0 [pid 2744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2745] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2744] <... futex resumed>) = 0 [pid 2744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2745] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2744] <... futex resumed>) = 0 [pid 2744] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2744] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2744] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2745] umount2("./file0", MNT_DETACH [pid 2744] <... clone resumed>, parent_tid=[2746], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2746 [pid 2744] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2744] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2746 attached [pid 2746] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2746] umount2("./file0", MNT_DETACH) = 0 [pid 2746] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2744] <... futex resumed>) = 0 [pid 2746] <... futex resumed>) = 1 [pid 2746] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2745] <... umount2 resumed>) = 0 [pid 2745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2745] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2744] exit_group(0) = ? [pid 2745] <... futex resumed>) = 231 [pid 2745] +++ exited with 0 +++ [pid 2746] <... futex resumed>) = ? [pid 2746] +++ exited with 0 +++ [pid 2744] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2744, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2747 attached , child_tidptr=0x5555564465d0) = 2747 [pid 2747] set_robust_list(0x5555564465e0, 24) = 0 [pid 2747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2747] setpgid(0, 0) = 0 [pid 2747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2747] write(3, "1000", 4) = 4 [pid 2747] close(3) = 0 [pid 2747] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2747] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2747] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2748 attached [pid 2748] set_robust_list(0x7fc84e09f9e0, 24 [pid 2747] <... clone resumed>, parent_tid=[2748], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2748 [pid 2748] <... set_robust_list resumed>) = 0 [pid 2747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2748] mkdir("./file0", 000 [pid 2747] <... futex resumed>) = 0 [pid 2748] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2748] <... futex resumed>) = 0 [pid 2747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2748] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2747] <... futex resumed>) = 0 [pid 2747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2748] <... mount resumed>) = 0 [pid 2748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2747] <... futex resumed>) = 0 [pid 2747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2747] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2748] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2747] <... futex resumed>) = 0 [pid 2747] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2747] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2747] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2747] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2747] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2749], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2749 [pid 2748] umount2("./file0", MNT_DETACH [pid 2747] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2749 attached ) = 0 [pid 2749] set_robust_list(0x7fc84e07e9e0, 24 [pid 2747] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2749] <... set_robust_list resumed>) = 0 [pid 2749] umount2("./file0", MNT_DETACH [pid 2748] <... umount2 resumed>) = 0 [pid 2748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2749] <... umount2 resumed>) = 0 [pid 2749] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2747] <... futex resumed>) = 0 [pid 2747] exit_group(0) = ? [pid 2749] +++ exited with 0 +++ [pid 2748] <... futex resumed>) = ? [pid 2748] +++ exited with 0 +++ [pid 2747] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2747, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2750 ./strace-static-x86_64: Process 2750 attached [pid 2750] set_robust_list(0x5555564465e0, 24) = 0 [pid 2750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2750] setpgid(0, 0) = 0 [pid 2750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2750] write(3, "1000", 4) = 4 [pid 2750] close(3) = 0 [pid 2750] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2750] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2750] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2751], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2751 [pid 2750] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2750] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2751 attached [pid 2751] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2751] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2750] <... futex resumed>) = 0 [pid 2750] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2750] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2751] <... futex resumed>) = 1 [pid 2751] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2750] <... futex resumed>) = 0 [pid 2751] <... futex resumed>) = 1 [pid 2750] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2751] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2750] <... futex resumed>) = 0 [pid 2750] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2751] <... mount resumed>) = 0 [pid 2751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2750] <... futex resumed>) = 0 [pid 2751] <... futex resumed>) = 1 [pid 2750] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2751] umount2("./file0", MNT_DETACH [pid 2750] <... futex resumed>) = 0 [pid 2750] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2750] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2751] <... umount2 resumed>) = 0 [pid 2751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2750] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2751] <... futex resumed>) = 0 ./strace-static-x86_64: Process 2752 attached [pid 2751] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2750] <... clone resumed>, parent_tid=[2752], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2752 [pid 2752] set_robust_list(0x7fc84e07e9e0, 24 [pid 2750] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2752] <... set_robust_list resumed>) = 0 [pid 2750] <... futex resumed>) = 0 [pid 2752] umount2("./file0", MNT_DETACH [pid 2750] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2752] <... umount2 resumed>) = 0 [pid 2752] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2750] <... futex resumed>) = 0 [pid 2752] <... futex resumed>) = 1 [pid 2750] exit_group(0 [pid 2752] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 2751] <... futex resumed>) = ? [pid 2750] <... exit_group resumed>) = ? [pid 2751] +++ exited with 0 +++ [pid 2752] +++ exited with 0 +++ [pid 2750] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2750, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2753 attached , child_tidptr=0x5555564465d0) = 2753 [pid 2753] set_robust_list(0x5555564465e0, 24) = 0 [pid 2753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2753] setpgid(0, 0) = 0 [pid 2753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2753] write(3, "1000", 4) = 4 [pid 2753] close(3) = 0 [pid 2753] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2753] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2753] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2753] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2754 attached [pid 2754] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2754] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2753] <... clone resumed>, parent_tid=[2754], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2754 [pid 2753] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2754] <... futex resumed>) = 0 [pid 2753] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2754] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2754] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2753] <... futex resumed>) = 0 [pid 2753] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2754] <... futex resumed>) = 0 [pid 2754] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2753] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2754] <... mount resumed>) = 0 [pid 2754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2753] <... futex resumed>) = 0 [pid 2754] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2753] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2754] <... mount resumed>) = 0 [pid 2753] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2753] <... futex resumed>) = 0 [pid 2754] umount2("./file0", MNT_DETACH [pid 2753] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2753] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2754] <... umount2 resumed>) = 0 [pid 2753] <... futex resumed>) = 0 [pid 2754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2753] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2754] <... futex resumed>) = 0 [pid 2753] <... mmap resumed>) = 0x7fc84e05e000 [pid 2754] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2753] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2753] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2755 attached [pid 2755] set_robust_list(0x7fc84e07e9e0, 24 [pid 2753] <... clone resumed>, parent_tid=[2755], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2755 [pid 2755] <... set_robust_list resumed>) = 0 [pid 2755] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2753] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2755] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2753] <... futex resumed>) = 0 [pid 2755] umount2("./file0", MNT_DETACH [pid 2753] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2755] <... umount2 resumed>) = 0 [pid 2755] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2753] <... futex resumed>) = 0 [pid 2753] exit_group(0) = ? [pid 2754] <... futex resumed>) = ? [pid 2755] <... futex resumed>) = ? [pid 2755] +++ exited with 0 +++ [pid 2754] +++ exited with 0 +++ [pid 2753] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2753, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2756 attached , child_tidptr=0x5555564465d0) = 2756 [pid 2756] set_robust_list(0x5555564465e0, 24) = 0 [pid 2756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2756] setpgid(0, 0) = 0 [pid 2756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2756] write(3, "1000", 4) = 4 [pid 2756] close(3) = 0 [pid 2756] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2756] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2756] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2757 attached , parent_tid=[2757], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2757 [pid 2756] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2757] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2757] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2756] <... futex resumed>) = 0 [pid 2756] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2757] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2756] <... futex resumed>) = 0 [pid 2756] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2757] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2756] <... futex resumed>) = 0 [pid 2756] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2756] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2757] umount2("./file0", MNT_DETACH [pid 2756] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2758], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2758 [pid 2756] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2756] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2758 attached [pid 2758] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2758] umount2("./file0", MNT_DETACH [pid 2757] <... umount2 resumed>) = 0 [pid 2757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2757] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2758] <... umount2 resumed>) = 0 [pid 2758] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2756] <... futex resumed>) = 0 [pid 2756] exit_group(0) = ? [pid 2758] <... futex resumed>) = ? [pid 2757] <... futex resumed>) = ? [pid 2758] +++ exited with 0 +++ [pid 2757] +++ exited with 0 +++ [pid 2756] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2756, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2759 attached , child_tidptr=0x5555564465d0) = 2759 [pid 2759] set_robust_list(0x5555564465e0, 24) = 0 [pid 2759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2759] setpgid(0, 0) = 0 [pid 2759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2759] write(3, "1000", 4) = 4 [pid 2759] close(3) = 0 [pid 2759] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2759] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2759] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2759] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2760], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2760 [pid 2759] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2759] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2760 attached [pid 2760] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2760] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2759] <... futex resumed>) = 0 [pid 2759] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2759] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2760] <... futex resumed>) = 1 [pid 2760] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2759] <... futex resumed>) = 0 [pid 2760] <... futex resumed>) = 1 [pid 2759] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2760] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2759] <... futex resumed>) = 0 [pid 2759] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2760] <... mount resumed>) = 0 [pid 2760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2759] <... futex resumed>) = 0 [pid 2760] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2759] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2759] <... futex resumed>) = 0 [pid 2760] umount2("./file0", MNT_DETACH [pid 2759] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2759] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2760] <... umount2 resumed>) = 0 [pid 2759] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2759] <... mprotect resumed>) = 0 [pid 2760] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2759] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2761 attached , parent_tid=[2761], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2761 [pid 2761] set_robust_list(0x7fc84e07e9e0, 24 [pid 2759] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2761] <... set_robust_list resumed>) = 0 [pid 2759] <... futex resumed>) = 0 [pid 2761] umount2("./file0", MNT_DETACH [pid 2759] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2761] <... umount2 resumed>) = 0 [pid 2761] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2759] <... futex resumed>) = 0 [pid 2761] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2759] exit_group(0) = ? [pid 2760] <... futex resumed>) = ? [pid 2761] <... futex resumed>) = ? [pid 2760] +++ exited with 0 +++ [pid 2761] +++ exited with 0 +++ [pid 2759] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2759, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2762 ./strace-static-x86_64: Process 2762 attached [pid 2762] set_robust_list(0x5555564465e0, 24) = 0 [pid 2762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2762] setpgid(0, 0) = 0 [pid 2762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2762] write(3, "1000", 4) = 4 [pid 2762] close(3) = 0 [pid 2762] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2762] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2762] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2763], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2763 [pid 2762] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2762] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2763 attached [pid 2763] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2763] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2762] <... futex resumed>) = 0 [pid 2762] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2762] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2763] <... futex resumed>) = 1 [pid 2763] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2762] <... futex resumed>) = 0 [pid 2763] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2762] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2763] <... mount resumed>) = 0 [pid 2762] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2762] <... futex resumed>) = 0 [pid 2762] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2762] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2762] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2762] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2763] umount2("./file0", MNT_DETACH [pid 2762] <... clone resumed>, parent_tid=[2764], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2764 ./strace-static-x86_64: Process 2764 attached [pid 2762] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2764] set_robust_list(0x7fc84e07e9e0, 24 [pid 2762] <... futex resumed>) = 0 [pid 2764] <... set_robust_list resumed>) = 0 [pid 2762] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2764] umount2("./file0", MNT_DETACH) = 0 [pid 2763] <... umount2 resumed>) = 0 [pid 2764] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2762] <... futex resumed>) = 0 [pid 2764] <... futex resumed>) = 1 [pid 2764] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2763] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2762] exit_group(0) = ? [pid 2764] <... futex resumed>) = ? [pid 2764] +++ exited with 0 +++ [pid 2763] <... futex resumed>) = ? [pid 2763] +++ exited with 0 +++ [pid 2762] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2762, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2765 ./strace-static-x86_64: Process 2765 attached [pid 2765] set_robust_list(0x5555564465e0, 24) = 0 [pid 2765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2765] setpgid(0, 0) = 0 [pid 2765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2765] write(3, "1000", 4) = 4 [pid 2765] close(3) = 0 [pid 2765] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2765] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2765] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2766], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2766 [pid 2765] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2765] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2766 attached [pid 2766] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2766] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2765] <... futex resumed>) = 0 [pid 2766] <... futex resumed>) = 1 [pid 2765] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2766] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2765] <... futex resumed>) = 0 [pid 2765] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2766] <... mount resumed>) = 0 [pid 2766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2765] <... futex resumed>) = 0 [pid 2766] <... futex resumed>) = 1 [pid 2765] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2766] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2765] <... futex resumed>) = 0 [pid 2765] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2766] <... mount resumed>) = 0 [pid 2766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2765] <... futex resumed>) = 0 [pid 2766] <... futex resumed>) = 1 [pid 2765] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2765] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2765] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2765] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2767], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2767 [pid 2765] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2765] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2767 attached [pid 2767] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2767] umount2("./file0", MNT_DETACH [pid 2766] umount2("./file0", MNT_DETACH [pid 2767] <... umount2 resumed>) = 0 [pid 2767] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2765] <... futex resumed>) = 0 [pid 2767] <... futex resumed>) = 1 [pid 2767] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2766] <... umount2 resumed>) = 0 [pid 2766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2766] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2765] exit_group(0 [pid 2767] <... futex resumed>) = 231 [pid 2765] <... exit_group resumed>) = ? [pid 2766] <... futex resumed>) = ? [pid 2766] +++ exited with 0 +++ [pid 2767] +++ exited with 0 +++ [pid 2765] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2765, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2768 attached , child_tidptr=0x5555564465d0) = 2768 [pid 2768] set_robust_list(0x5555564465e0, 24) = 0 [pid 2768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2768] setpgid(0, 0) = 0 [pid 2768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2768] write(3, "1000", 4) = 4 [pid 2768] close(3) = 0 [pid 2768] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2768] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2768] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2769 attached , parent_tid=[2769], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2769 [pid 2769] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2769] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2768] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2769] <... futex resumed>) = 0 [pid 2769] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2769] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2768] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2768] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2769] <... futex resumed>) = 0 [pid 2769] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2768] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2769] <... futex resumed>) = 0 [pid 2768] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2769] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2768] <... futex resumed>) = 0 [pid 2768] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2769] <... mount resumed>) = 0 [pid 2769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2768] <... futex resumed>) = 0 [pid 2769] umount2("./file0", MNT_DETACH [pid 2768] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2768] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2769] <... umount2 resumed>) = 0 [pid 2768] <... mmap resumed>) = 0x7fc84e05e000 [pid 2769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2768] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2769] <... futex resumed>) = 0 [pid 2768] <... mprotect resumed>) = 0 [pid 2769] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2768] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2770 attached , parent_tid=[2770], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2770 [pid 2770] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2770] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2768] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2770] <... futex resumed>) = 0 [pid 2770] umount2("./file0", MNT_DETACH [pid 2768] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2770] <... umount2 resumed>) = 0 [pid 2770] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2770] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2768] exit_group(0 [pid 2769] <... futex resumed>) = ? [pid 2768] <... exit_group resumed>) = ? [pid 2770] <... futex resumed>) = ? [pid 2770] +++ exited with 0 +++ [pid 2769] +++ exited with 0 +++ [pid 2768] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2768, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2771 attached , child_tidptr=0x5555564465d0) = 2771 [pid 2771] set_robust_list(0x5555564465e0, 24) = 0 [pid 2771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2771] setpgid(0, 0) = 0 [pid 2771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2771] write(3, "1000", 4) = 4 [pid 2771] close(3) = 0 [pid 2771] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2771] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2771] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2771] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2772 attached , parent_tid=[2772], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2772 [pid 2772] set_robust_list(0x7fc84e09f9e0, 24 [pid 2771] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2771] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2772] <... set_robust_list resumed>) = 0 [pid 2772] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2771] <... futex resumed>) = 0 [pid 2772] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2771] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2771] <... futex resumed>) = 0 [pid 2772] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2771] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2772] <... mount resumed>) = 0 [pid 2772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2771] <... futex resumed>) = 0 [pid 2771] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2771] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2772] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2771] <... futex resumed>) = 0 [pid 2771] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2771] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2771] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2771] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2771] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2773], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2773 [pid 2771] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2771] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2773 attached [ 29.299239][ T2758] VFS: Busy inodes after unmount of ramfs. Self-destruct in 5 seconds. Have a nice day... [pid 2773] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2773] umount2("./file0", MNT_DETACH) = 0 [pid 2773] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2771] <... futex resumed>) = 0 [pid 2773] <... futex resumed>) = 1 [pid 2773] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2772] umount2("./file0", MNT_DETACH) = 0 [pid 2772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2772] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2771] exit_group(0) = ? [pid 2772] <... futex resumed>) = ? [pid 2773] <... futex resumed>) = ? [pid 2773] +++ exited with 0 +++ [pid 2772] +++ exited with 0 +++ [pid 2771] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2771, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2774 attached , child_tidptr=0x5555564465d0) = 2774 [pid 2774] set_robust_list(0x5555564465e0, 24) = 0 [pid 2774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2774] setpgid(0, 0) = 0 [pid 2774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2774] write(3, "1000", 4) = 4 [pid 2774] close(3) = 0 [pid 2774] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2774] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2774] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2775 attached , parent_tid=[2775], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2775 [pid 2775] set_robust_list(0x7fc84e09f9e0, 24 [pid 2774] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2774] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2775] <... set_robust_list resumed>) = 0 [pid 2775] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2774] <... futex resumed>) = 0 [pid 2775] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2774] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2774] <... futex resumed>) = 0 [pid 2775] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2774] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2775] <... mount resumed>) = 0 [pid 2775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2774] <... futex resumed>) = 0 [pid 2774] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2774] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2775] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2774] <... futex resumed>) = 0 [pid 2774] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2774] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2774] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2774] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2776], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2776 [pid 2774] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2774] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2775] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2776 attached [pid 2776] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2776] umount2("./file0", MNT_DETACH) = 0 [pid 2776] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2775] <... umount2 resumed>) = 0 [pid 2774] <... futex resumed>) = 0 [pid 2776] <... futex resumed>) = 1 [pid 2776] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2775] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2774] exit_group(0) = ? [pid 2776] <... futex resumed>) = 231 [pid 2775] <... futex resumed>) = ? [pid 2775] +++ exited with 0 +++ [pid 2776] +++ exited with 0 +++ [pid 2774] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2774, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2777 ./strace-static-x86_64: Process 2777 attached [pid 2777] set_robust_list(0x5555564465e0, 24) = 0 [pid 2777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2777] setpgid(0, 0) = 0 [pid 2777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2777] write(3, "1000", 4) = 4 [pid 2777] close(3) = 0 [pid 2777] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2777] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2777] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2777] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2778], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2778 [pid 2777] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2777] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2778 attached [pid 2778] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2778] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2777] <... futex resumed>) = 0 [pid 2777] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2777] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2778] <... futex resumed>) = 1 [pid 2778] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2777] <... futex resumed>) = 0 [pid 2777] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2778] <... futex resumed>) = 1 [pid 2777] <... futex resumed>) = 0 [pid 2778] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2777] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2778] <... mount resumed>) = 0 [pid 2778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2777] <... futex resumed>) = 0 [pid 2777] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2777] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2777] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2777] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2777] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2779 attached [pid 2778] umount2("./file0", MNT_DETACH [pid 2777] <... clone resumed>, parent_tid=[2779], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2779 [pid 2777] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2777] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2779] set_robust_list(0x7fc84e07e9e0, 24 [pid 2778] <... umount2 resumed>) = 0 [pid 2779] <... set_robust_list resumed>) = 0 [pid 2778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2779] umount2("./file0", MNT_DETACH [pid 2778] <... futex resumed>) = 0 [pid 2778] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2779] <... umount2 resumed>) = 0 [pid 2779] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2777] <... futex resumed>) = 0 [pid 2777] exit_group(0) = ? [pid 2778] <... futex resumed>) = ? [pid 2778] +++ exited with 0 +++ [pid 2779] +++ exited with 0 +++ [pid 2777] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2777, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2780 attached , child_tidptr=0x5555564465d0) = 2780 [pid 2780] set_robust_list(0x5555564465e0, 24) = 0 [pid 2780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2780] setpgid(0, 0) = 0 [pid 2780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2780] write(3, "1000", 4) = 4 [pid 2780] close(3) = 0 [pid 2780] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2780] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2780] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2781 attached [pid 2781] set_robust_list(0x7fc84e09f9e0, 24 [pid 2780] <... clone resumed>, parent_tid=[2781], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2781 [pid 2780] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2780] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2781] <... set_robust_list resumed>) = 0 [pid 2781] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2780] <... futex resumed>) = 0 [pid 2780] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2781] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2780] <... futex resumed>) = 0 [pid 2780] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2781] <... mount resumed>) = 0 [pid 2781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2780] <... futex resumed>) = 0 [pid 2780] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2780] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2781] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2780] <... futex resumed>) = 0 [pid 2780] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2780] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2781] umount2("./file0", MNT_DETACH [pid 2780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2780] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2781] <... umount2 resumed>) = 0 [pid 2781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2780] <... mprotect resumed>) = 0 [pid 2780] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2781] <... futex resumed>) = 0 [pid 2781] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2782 attached [pid 2780] <... clone resumed>, parent_tid=[2782], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2782 [pid 2780] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2780] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2782] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2782] umount2("./file0", MNT_DETACH) = 0 [pid 2782] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2780] <... futex resumed>) = 0 [pid 2782] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2780] exit_group(0) = ? [pid 2782] <... futex resumed>) = ? [pid 2781] <... futex resumed>) = ? [pid 2781] +++ exited with 0 +++ [pid 2782] +++ exited with 0 +++ [pid 2780] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2780, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2783 ./strace-static-x86_64: Process 2783 attached [pid 2783] set_robust_list(0x5555564465e0, 24) = 0 [pid 2783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2783] setpgid(0, 0) = 0 [pid 2783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2783] write(3, "1000", 4) = 4 [pid 2783] close(3) = 0 [pid 2783] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2783] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2783] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2783] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2784], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2784 [pid 2783] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2783] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2784 attached [pid 2784] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2784] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2783] <... futex resumed>) = 0 [pid 2783] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2783] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2784] <... futex resumed>) = 1 [pid 2784] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2783] <... futex resumed>) = 0 [pid 2783] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2783] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2784] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2783] <... futex resumed>) = 0 [pid 2783] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2783] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2783] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2783] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2783] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2785], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2785 [pid 2783] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2784] <... futex resumed>) = 1 [pid 2783] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2785 attached [pid 2785] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2785] umount2("./file0", MNT_DETACH [pid 2784] umount2("./file0", MNT_DETACH [pid 2785] <... umount2 resumed>) = 0 [pid 2785] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2783] <... futex resumed>) = 0 [pid 2785] <... futex resumed>) = 1 [pid 2785] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2784] <... umount2 resumed>) = 0 [pid 2784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2784] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2783] exit_group(0) = ? [pid 2785] <... futex resumed>) = ? [pid 2785] +++ exited with 0 +++ [pid 2784] <... futex resumed>) = ? [pid 2784] +++ exited with 0 +++ [pid 2783] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2783, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2786 attached , child_tidptr=0x5555564465d0) = 2786 [pid 2786] set_robust_list(0x5555564465e0, 24) = 0 [pid 2786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2786] setpgid(0, 0) = 0 [pid 2786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2786] write(3, "1000", 4) = 4 [pid 2786] close(3) = 0 [pid 2786] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2786] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2786] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2787 attached , parent_tid=[2787], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2787 [pid 2786] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2787] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2787] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2786] <... futex resumed>) = 0 [pid 2786] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2787] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2786] <... futex resumed>) = 0 [pid 2786] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2787] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2786] <... futex resumed>) = 0 [pid 2786] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2786] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2786] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2787] umount2("./file0", MNT_DETACH [pid 2786] <... clone resumed>, parent_tid=[2788], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2788 [pid 2786] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2786] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2788 attached [pid 2788] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2788] umount2("./file0", MNT_DETACH) = 0 [pid 2788] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2787] <... umount2 resumed>) = 0 [pid 2787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2786] <... futex resumed>) = 0 [pid 2788] <... futex resumed>) = 1 [pid 2786] exit_group(0) = ? [pid 2787] <... futex resumed>) = ? [pid 2787] +++ exited with 0 +++ [pid 2788] +++ exited with 0 +++ [pid 2786] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2786, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2789 ./strace-static-x86_64: Process 2789 attached [pid 2789] set_robust_list(0x5555564465e0, 24) = 0 [pid 2789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2789] setpgid(0, 0) = 0 [pid 2789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2789] write(3, "1000", 4) = 4 [pid 2789] close(3) = 0 [pid 2789] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2789] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2789] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2789] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2790], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2790 ./strace-static-x86_64: Process 2790 attached [pid 2789] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2789] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2790] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2790] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2790] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2789] <... futex resumed>) = 0 [pid 2789] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2790] <... futex resumed>) = 0 [pid 2790] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2789] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2790] <... mount resumed>) = 0 [pid 2790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2790] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2789] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2790] <... futex resumed>) = 0 [pid 2790] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2789] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2790] <... mount resumed>) = 0 [pid 2790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2790] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2789] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2790] <... futex resumed>) = 0 [pid 2790] umount2("./file0", MNT_DETACH [pid 2789] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2790] <... umount2 resumed>) = 0 [pid 2789] <... futex resumed>) = 0 [pid 2790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2790] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2789] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2789] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2789] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2791], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2791 [pid 2789] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2789] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2791 attached [pid 2791] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2791] umount2("./file0", MNT_DETACH) = 0 [pid 2791] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2789] <... futex resumed>) = 0 [pid 2789] exit_group(0) = ? [pid 2790] <... futex resumed>) = ? [pid 2790] +++ exited with 0 +++ [pid 2791] +++ exited with 0 +++ [pid 2789] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2789, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2792 ./strace-static-x86_64: Process 2792 attached [pid 2792] set_robust_list(0x5555564465e0, 24) = 0 [pid 2792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2792] setpgid(0, 0) = 0 [pid 2792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2792] write(3, "1000", 4) = 4 [pid 2792] close(3) = 0 [pid 2792] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2792] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2792] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2793 attached , parent_tid=[2793], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2793 [pid 2792] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2792] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2793] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2793] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2792] <... futex resumed>) = 0 [pid 2793] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2792] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2792] <... futex resumed>) = 0 [pid 2793] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2792] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2793] <... mount resumed>) = 0 [pid 2793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2793] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2792] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2793] <... futex resumed>) = 0 [pid 2792] <... futex resumed>) = 1 [pid 2793] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2792] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2793] <... mount resumed>) = 0 [pid 2793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2792] <... futex resumed>) = 0 [pid 2793] umount2("./file0", MNT_DETACH [pid 2792] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2792] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2793] <... umount2 resumed>) = 0 [pid 2792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2792] <... mmap resumed>) = 0x7fc84e05e000 [pid 2793] <... futex resumed>) = 0 [pid 2792] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2793] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2792] <... mprotect resumed>) = 0 [pid 2792] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2794 attached , parent_tid=[2794], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2794 [pid 2794] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2794] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2792] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2794] <... futex resumed>) = 0 [pid 2794] umount2("./file0", MNT_DETACH [pid 2792] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2794] <... umount2 resumed>) = 0 [pid 2794] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2794] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2792] <... futex resumed>) = 0 [pid 2792] exit_group(0) = ? [pid 2794] <... futex resumed>) = ? [pid 2793] <... futex resumed>) = ? [pid 2794] +++ exited with 0 +++ [pid 2793] +++ exited with 0 +++ [pid 2792] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2792, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2795 attached , child_tidptr=0x5555564465d0) = 2795 [pid 2795] set_robust_list(0x5555564465e0, 24) = 0 [pid 2795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2795] setpgid(0, 0) = 0 [pid 2795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2795] write(3, "1000", 4) = 4 [pid 2795] close(3) = 0 [pid 2795] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2795] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2795] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2795] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2796 attached [pid 2796] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2796] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2795] <... clone resumed>, parent_tid=[2796], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2796 [pid 2795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2796] <... futex resumed>) = 0 [pid 2795] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2796] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2795] <... futex resumed>) = 0 [pid 2795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2795] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2796] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2795] <... futex resumed>) = 0 [pid 2796] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2796] <... mount resumed>) = 0 [pid 2795] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2796] <... futex resumed>) = 0 [pid 2795] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2796] umount2("./file0", MNT_DETACH [pid 2795] <... futex resumed>) = 0 [pid 2795] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2796] <... umount2 resumed>) = 0 [pid 2795] <... futex resumed>) = 0 [pid 2796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2795] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2796] <... futex resumed>) = 0 [pid 2795] <... mmap resumed>) = 0x7fc84e05e000 [pid 2796] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2795] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2795] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2797 attached , parent_tid=[2797], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2797 [pid 2795] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2795] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2797] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2797] umount2("./file0", MNT_DETACH) = 0 [pid 2797] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2795] <... futex resumed>) = 0 [pid 2797] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2795] exit_group(0 [pid 2796] <... futex resumed>) = ? [pid 2795] <... exit_group resumed>) = ? [pid 2796] +++ exited with 0 +++ [pid 2797] <... futex resumed>) = ? [pid 2797] +++ exited with 0 +++ [pid 2795] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2795, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2798 ./strace-static-x86_64: Process 2798 attached [pid 2798] set_robust_list(0x5555564465e0, 24) = 0 [pid 2798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2798] setpgid(0, 0) = 0 [pid 2798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2798] write(3, "1000", 4) = 4 [pid 2798] close(3) = 0 [pid 2798] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2798] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2798] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2799 attached , parent_tid=[2799], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2799 [pid 2799] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2799] <... futex resumed>) = 0 [pid 2799] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2798] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2799] <... futex resumed>) = 0 [pid 2799] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2798] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2799] <... futex resumed>) = 0 [pid 2799] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2798] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2799] <... futex resumed>) = 0 [pid 2799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2799] <... futex resumed>) = 0 [pid 2799] umount2("./file0", MNT_DETACH) = 0 [pid 2798] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2799] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] <... futex resumed>) = 0 [pid 2798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2798] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2798] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2800 attached [pid 2800] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2800] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] <... clone resumed>, parent_tid=[2800], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2800 [pid 2798] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2800] <... futex resumed>) = 0 [pid 2800] umount2("./file0", MNT_DETACH [pid 2798] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2800] <... umount2 resumed>) = 0 [pid 2800] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2800] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2798] exit_group(0) = ? [pid 2799] <... futex resumed>) = ? [pid 2799] +++ exited with 0 +++ [pid 2800] <... futex resumed>) = ? [pid 2800] +++ exited with 0 +++ [pid 2798] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2798, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2801 attached , child_tidptr=0x5555564465d0) = 2801 [pid 2801] set_robust_list(0x5555564465e0, 24) = 0 [pid 2801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2801] setpgid(0, 0) = 0 [pid 2801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2801] write(3, "1000", 4) = 4 [pid 2801] close(3) = 0 [pid 2801] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2801] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2801] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2802], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2802 [pid 2801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2802 attached [pid 2802] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2802] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2801] <... futex resumed>) = 0 [pid 2801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2802] <... futex resumed>) = 1 [pid 2802] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2801] <... futex resumed>) = 0 [pid 2801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2802] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2801] <... futex resumed>) = 0 [pid 2801] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2801] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2801] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2802] umount2("./file0", MNT_DETACH [pid 2801] <... clone resumed>, parent_tid=[2803], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2803 [pid 2801] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2801] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2803 attached [pid 2803] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2803] umount2("./file0", MNT_DETACH) = 0 [pid 2803] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2801] <... futex resumed>) = 0 [pid 2803] <... futex resumed>) = 1 [pid 2803] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2802] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 2802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2802] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2801] exit_group(0) = ? [pid 2803] <... futex resumed>) = ? [pid 2803] +++ exited with 0 +++ [pid 2802] <... futex resumed>) = ? [pid 2802] +++ exited with 0 +++ [pid 2801] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2801, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2804 attached , child_tidptr=0x5555564465d0) = 2804 [pid 2804] set_robust_list(0x5555564465e0, 24) = 0 [pid 2804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2804] setpgid(0, 0) = 0 [pid 2804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2804] write(3, "1000", 4) = 4 [pid 2804] close(3) = 0 [pid 2804] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2804] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2804] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2805 attached , parent_tid=[2805], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2805 [pid 2804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2805] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2805] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2804] <... futex resumed>) = 0 [pid 2804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2805] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2804] <... futex resumed>) = 0 [pid 2804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2805] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2804] <... futex resumed>) = 0 [pid 2804] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2804] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2804] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2806], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2806 [pid 2804] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2806 attached [pid 2806] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2806] umount2("./file0", MNT_DETACH [pid 2805] umount2("./file0", MNT_DETACH [pid 2806] <... umount2 resumed>) = 0 [pid 2806] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2804] <... futex resumed>) = 0 [pid 2806] <... futex resumed>) = 1 [pid 2806] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2805] <... umount2 resumed>) = 0 [pid 2805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2804] exit_group(0) = ? [pid 2806] <... futex resumed>) = ? [pid 2806] +++ exited with 0 +++ [pid 2805] +++ exited with 0 +++ [pid 2804] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2804, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2807 ./strace-static-x86_64: Process 2807 attached [pid 2807] set_robust_list(0x5555564465e0, 24) = 0 [pid 2807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2807] setpgid(0, 0) = 0 [pid 2807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2807] write(3, "1000", 4) = 4 [pid 2807] close(3) = 0 [pid 2807] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2807] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2807] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2807] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2808], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2808 [pid 2807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2808 attached [pid 2808] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2808] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2807] <... futex resumed>) = 0 [pid 2807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2808] <... futex resumed>) = 1 [pid 2808] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2807] <... futex resumed>) = 0 [pid 2808] <... futex resumed>) = 1 [pid 2807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2808] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2807] <... futex resumed>) = 0 [pid 2807] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2808] <... mount resumed>) = 0 [pid 2808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2807] <... futex resumed>) = 0 [pid 2808] <... futex resumed>) = 1 [pid 2807] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2808] umount2("./file0", MNT_DETACH [pid 2807] <... futex resumed>) = 0 [pid 2807] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2807] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2807] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2808] <... umount2 resumed>) = 0 [pid 2808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2807] <... mprotect resumed>) = 0 [pid 2808] <... futex resumed>) = 0 [pid 2807] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2808] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2809 attached [pid 2809] set_robust_list(0x7fc84e07e9e0, 24 [pid 2807] <... clone resumed>, parent_tid=[2809], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2809 [pid 2809] <... set_robust_list resumed>) = 0 [pid 2807] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2809] umount2("./file0", MNT_DETACH [pid 2807] <... futex resumed>) = 0 [pid 2807] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2809] <... umount2 resumed>) = 0 [pid 2809] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2807] <... futex resumed>) = 0 [pid 2809] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2807] exit_group(0) = ? [pid 2808] <... futex resumed>) = ? [pid 2808] +++ exited with 0 +++ [pid 2809] <... futex resumed>) = ? [pid 2809] +++ exited with 0 +++ [pid 2807] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2807, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2810 ./strace-static-x86_64: Process 2810 attached [pid 2810] set_robust_list(0x5555564465e0, 24) = 0 [pid 2810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2810] setpgid(0, 0) = 0 [pid 2810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2810] write(3, "1000", 4) = 4 [pid 2810] close(3) = 0 [pid 2810] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2810] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2810] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2811], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2811 [pid 2810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2811 attached [pid 2811] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2811] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2810] <... futex resumed>) = 0 [pid 2810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2811] <... futex resumed>) = 1 [pid 2811] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2810] <... futex resumed>) = 0 [pid 2811] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2810] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2811] <... mount resumed>) = 0 [pid 2811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2810] <... futex resumed>) = 0 [pid 2810] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2810] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2810] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2810] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2811] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 2812 attached [pid 2810] <... clone resumed>, parent_tid=[2812], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2812 [pid 2812] set_robust_list(0x7fc84e07e9e0, 24 [pid 2810] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2812] <... set_robust_list resumed>) = 0 [pid 2810] <... futex resumed>) = 0 [pid 2812] umount2("./file0", MNT_DETACH [pid 2810] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2812] <... umount2 resumed>) = 0 [pid 2811] <... umount2 resumed>) = 0 [pid 2811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2811] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2812] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2810] <... futex resumed>) = 0 [pid 2810] exit_group(0 [pid 2812] ????( [pid 2810] <... exit_group resumed>) = ? [pid 2811] <... futex resumed>) = ? [pid 2811] +++ exited with 0 +++ [pid 2812] <... ???? resumed>) = ? [pid 2812] +++ exited with 0 +++ [pid 2810] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2810, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2813 ./strace-static-x86_64: Process 2813 attached [pid 2813] set_robust_list(0x5555564465e0, 24) = 0 [pid 2813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2813] setpgid(0, 0) = 0 [pid 2813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2813] write(3, "1000", 4) = 4 [pid 2813] close(3) = 0 [pid 2813] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2813] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2813] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2814 attached , parent_tid=[2814], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2814 [pid 2814] set_robust_list(0x7fc84e09f9e0, 24 [pid 2813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2814] <... set_robust_list resumed>) = 0 [pid 2813] <... futex resumed>) = 0 [pid 2813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2814] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2813] <... futex resumed>) = 0 [pid 2813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2814] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2813] <... futex resumed>) = 0 [pid 2813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2814] <... mount resumed>) = 0 [pid 2814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2813] <... futex resumed>) = 0 [pid 2813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2813] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2814] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2813] <... futex resumed>) = 0 [pid 2813] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2813] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2814] umount2("./file0", MNT_DETACH [pid 2813] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2813] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2813] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2815], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2815 [pid 2813] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2813] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2815 attached [pid 2815] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2815] umount2("./file0", MNT_DETACH) = 0 [pid 2814] <... umount2 resumed>) = 0 [pid 2815] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2813] <... futex resumed>) = 0 [pid 2813] exit_group(0) = ? [pid 2814] <... futex resumed>) = ? [pid 2814] +++ exited with 0 +++ [pid 2815] +++ exited with 0 +++ [pid 2813] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2813, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2816 ./strace-static-x86_64: Process 2816 attached [pid 2816] set_robust_list(0x5555564465e0, 24) = 0 [pid 2816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2816] setpgid(0, 0) = 0 [pid 2816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2816] write(3, "1000", 4) = 4 [pid 2816] close(3) = 0 [pid 2816] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2816] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2816] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2817], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2817 [pid 2816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 2817 attached [pid 2817] set_robust_list(0x7fc84e09f9e0, 24 [pid 2816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2817] <... set_robust_list resumed>) = 0 [pid 2817] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2817] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2816] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2817] <... futex resumed>) = 0 [pid 2817] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2817] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2817] <... futex resumed>) = 0 [pid 2817] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2816] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2817] <... mount resumed>) = 0 [pid 2817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2816] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2817] <... futex resumed>) = 0 [pid 2817] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2816] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2817] <... futex resumed>) = 0 [pid 2817] umount2("./file0", MNT_DETACH [pid 2816] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2817] <... umount2 resumed>) = 0 [pid 2817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2817] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2816] <... futex resumed>) = 0 [pid 2816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2816] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2816] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2818 attached , parent_tid=[2818], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2818 [pid 2818] set_robust_list(0x7fc84e07e9e0, 24 [pid 2816] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2818] <... set_robust_list resumed>) = 0 [pid 2818] umount2("./file0", MNT_DETACH) = 0 [pid 2818] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2818] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2816] <... futex resumed>) = 1 [pid 2818] <... futex resumed>) = 0 [pid 2818] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2816] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2816] exit_group(0 [pid 2817] <... futex resumed>) = ? [pid 2816] <... exit_group resumed>) = ? [pid 2817] +++ exited with 0 +++ [pid 2818] <... futex resumed>) = ? [pid 2818] +++ exited with 0 +++ [pid 2816] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2816, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2819 ./strace-static-x86_64: Process 2819 attached [pid 2819] set_robust_list(0x5555564465e0, 24) = 0 [pid 2819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2819] setpgid(0, 0) = 0 [pid 2819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2819] write(3, "1000", 4) = 4 [pid 2819] close(3) = 0 [pid 2819] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2819] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2819] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2820], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2820 [pid 2819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2820 attached [pid 2820] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2820] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2819] <... futex resumed>) = 1 [pid 2820] <... futex resumed>) = 0 [pid 2820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2820] <... futex resumed>) = 0 [pid 2820] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2820] <... futex resumed>) = 0 [pid 2820] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2819] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2820] <... mount resumed>) = 0 [pid 2820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2819] <... futex resumed>) = 0 [pid 2820] umount2("./file0", MNT_DETACH [pid 2819] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2820] <... umount2 resumed>) = 0 [pid 2819] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2819] <... futex resumed>) = 0 [pid 2819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2820] <... futex resumed>) = 0 [pid 2820] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2819] <... mmap resumed>) = 0x7fc84e05e000 [pid 2819] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2819] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2821 attached , parent_tid=[2821], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2821 [pid 2821] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2821] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2819] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2821] <... futex resumed>) = 0 [pid 2821] umount2("./file0", MNT_DETACH [pid 2819] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2821] <... umount2 resumed>) = 0 [pid 2821] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2819] <... futex resumed>) = 0 [pid 2819] exit_group(0) = ? [pid 2820] <... futex resumed>) = ? [pid 2820] +++ exited with 0 +++ [pid 2821] +++ exited with 0 +++ [pid 2819] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2819, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2822 ./strace-static-x86_64: Process 2822 attached [pid 2822] set_robust_list(0x5555564465e0, 24) = 0 [pid 2822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2822] setpgid(0, 0) = 0 [pid 2822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2822] write(3, "1000", 4) = 4 [pid 2822] close(3) = 0 [pid 2822] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2822] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2822] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2823], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2823 [pid 2822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2823 attached [pid 2823] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2823] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2822] <... futex resumed>) = 0 [pid 2822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2823] <... futex resumed>) = 1 [pid 2823] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2822] <... futex resumed>) = 0 [pid 2823] <... futex resumed>) = 1 [pid 2822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2823] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2822] <... futex resumed>) = 0 [pid 2822] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2823] <... mount resumed>) = 0 [pid 2823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2822] <... futex resumed>) = 0 [pid 2823] <... futex resumed>) = 1 [pid 2822] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2823] umount2("./file0", MNT_DETACH [pid 2822] <... futex resumed>) = 0 [pid 2822] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2822] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2823] <... umount2 resumed>) = 0 [pid 2822] <... mprotect resumed>) = 0 [pid 2823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2822] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2823] <... futex resumed>) = 0 ./strace-static-x86_64: Process 2824 attached [pid 2823] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2824] set_robust_list(0x7fc84e07e9e0, 24 [pid 2822] <... clone resumed>, parent_tid=[2824], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2824 [pid 2824] <... set_robust_list resumed>) = 0 [pid 2822] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2824] umount2("./file0", MNT_DETACH [pid 2822] <... futex resumed>) = 0 [pid 2822] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2824] <... umount2 resumed>) = 0 [pid 2824] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2822] <... futex resumed>) = 0 [pid 2822] exit_group(0) = ? [pid 2823] <... futex resumed>) = ? [pid 2823] +++ exited with 0 +++ [pid 2824] <... futex resumed>) = ? [pid 2824] +++ exited with 0 +++ [pid 2822] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2822, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2825 ./strace-static-x86_64: Process 2825 attached [pid 2825] set_robust_list(0x5555564465e0, 24) = 0 [pid 2825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2825] setpgid(0, 0) = 0 [pid 2825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2825] write(3, "1000", 4) = 4 [pid 2825] close(3) = 0 [pid 2825] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2825] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2825] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2826], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2826 [pid 2825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2826 attached [pid 2826] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2826] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2825] <... futex resumed>) = 0 [pid 2825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2826] <... futex resumed>) = 1 [pid 2826] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2825] <... futex resumed>) = 0 [pid 2825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2826] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2825] <... futex resumed>) = 0 [pid 2825] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2825] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2825] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2827 attached [pid 2826] umount2("./file0", MNT_DETACH [pid 2825] <... clone resumed>, parent_tid=[2827], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2827 [pid 2825] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2825] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2827] set_robust_list(0x7fc84e07e9e0, 24 [pid 2826] <... umount2 resumed>) = 0 [pid 2827] <... set_robust_list resumed>) = 0 [pid 2826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2827] umount2("./file0", MNT_DETACH [pid 2826] <... futex resumed>) = 0 [pid 2826] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2827] <... umount2 resumed>) = 0 [pid 2827] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2825] <... futex resumed>) = 0 [pid 2825] exit_group(0 [pid 2827] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2825] <... exit_group resumed>) = ? [pid 2826] <... futex resumed>) = ? [pid 2827] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2826] +++ exited with 0 +++ [pid 2827] +++ exited with 0 +++ [pid 2825] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2825, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2828 attached , child_tidptr=0x5555564465d0) = 2828 [pid 2828] set_robust_list(0x5555564465e0, 24) = 0 [pid 2828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2828] setpgid(0, 0) = 0 [pid 2828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2828] write(3, "1000", 4) = 4 [pid 2828] close(3) = 0 [pid 2828] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2828] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2828] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2829 attached , parent_tid=[2829], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2829 [pid 2828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2829] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2829] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2828] <... futex resumed>) = 0 [pid 2829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 2828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2829] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2828] <... futex resumed>) = 0 [pid 2829] <... mount resumed>) = 0 [pid 2828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2828] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2829] <... futex resumed>) = 0 [pid 2828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2829] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2828] <... futex resumed>) = 0 [pid 2829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2828] <... futex resumed>) = 0 [pid 2829] umount2("./file0", MNT_DETACH [pid 2828] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2829] <... umount2 resumed>) = 0 [pid 2828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2828] <... mmap resumed>) = 0x7fc84e05e000 [pid 2829] <... futex resumed>) = 0 [pid 2828] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2828] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2830 attached [pid 2830] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2830] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2828] <... clone resumed>, parent_tid=[2830], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2830 [pid 2828] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2830] <... futex resumed>) = 0 [pid 2830] umount2("./file0", MNT_DETACH [pid 2828] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2830] <... umount2 resumed>) = 0 [pid 2830] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2830] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2828] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2828] exit_group(0 [pid 2829] <... futex resumed>) = ? [pid 2828] <... exit_group resumed>) = ? [pid 2830] <... futex resumed>) = ? [pid 2830] +++ exited with 0 +++ [pid 2829] +++ exited with 0 +++ [pid 2828] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2828, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2831 attached , child_tidptr=0x5555564465d0) = 2831 [pid 2831] set_robust_list(0x5555564465e0, 24) = 0 [pid 2831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2831] setpgid(0, 0) = 0 [pid 2831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2831] write(3, "1000", 4) = 4 [pid 2831] close(3) = 0 [pid 2831] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2831] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2831] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2832 attached , parent_tid=[2832], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2832 [pid 2832] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2832] <... futex resumed>) = 0 [pid 2831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2832] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2831] <... futex resumed>) = 0 [pid 2831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2832] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2831] <... futex resumed>) = 0 [pid 2831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2832] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2831] <... futex resumed>) = 0 [pid 2831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2832] umount2("./file0", MNT_DETACH [pid 2831] <... futex resumed>) = 0 [pid 2831] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2831] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2831] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2833], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2833 ./strace-static-x86_64: Process 2833 attached [pid 2831] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2833] set_robust_list(0x7fc84e07e9e0, 24 [pid 2832] <... umount2 resumed>) = 0 [pid 2833] <... set_robust_list resumed>) = 0 [pid 2831] <... futex resumed>) = 0 [pid 2832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2832] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2833] umount2("./file0", MNT_DETACH [pid 2831] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2833] <... umount2 resumed>) = 0 [pid 2833] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2831] <... futex resumed>) = 0 [pid 2833] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2831] exit_group(0 [pid 2833] <... futex resumed>) = ? [pid 2831] <... exit_group resumed>) = ? [pid 2832] <... futex resumed>) = ? [pid 2832] +++ exited with 0 +++ [pid 2833] +++ exited with 0 +++ [pid 2831] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2831, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2834 ./strace-static-x86_64: Process 2834 attached [pid 2834] set_robust_list(0x5555564465e0, 24) = 0 [pid 2834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2834] setpgid(0, 0) = 0 [pid 2834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2834] write(3, "1000", 4) = 4 [pid 2834] close(3) = 0 [pid 2834] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2834] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2834] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2835 attached , parent_tid=[2835], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2835 [pid 2834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2835] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2835] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2834] <... futex resumed>) = 0 [pid 2835] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2835] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2834] <... futex resumed>) = 0 [pid 2834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2835] <... mount resumed>) = 0 [pid 2835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2834] <... futex resumed>) = 0 [pid 2834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2835] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2834] <... futex resumed>) = 0 [pid 2834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2834] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2834] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2835] umount2("./file0", MNT_DETACH [pid 2834] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2836], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2836 [pid 2834] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2834] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2836 attached [pid 2836] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2836] umount2("./file0", MNT_DETACH [pid 2835] <... umount2 resumed>) = 0 [pid 2835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2836] <... umount2 resumed>) = 0 [pid 2836] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2834] <... futex resumed>) = 0 [pid 2834] exit_group(0) = ? [pid 2836] <... futex resumed>) = ? [pid 2836] +++ exited with 0 +++ [pid 2835] <... futex resumed>) = ? [pid 2835] +++ exited with 0 +++ [pid 2834] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2834, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2837 attached , child_tidptr=0x5555564465d0) = 2837 [pid 2837] set_robust_list(0x5555564465e0, 24) = 0 [pid 2837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2837] setpgid(0, 0) = 0 [pid 2837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2837] write(3, "1000", 4) = 4 [pid 2837] close(3) = 0 [pid 2837] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2837] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2837] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2838], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2838 [pid 2837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2838 attached [pid 2838] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2838] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2837] <... futex resumed>) = 0 [pid 2837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2838] <... futex resumed>) = 1 [pid 2838] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2837] <... futex resumed>) = 0 [pid 2837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2838] <... futex resumed>) = 1 [pid 2838] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2837] <... futex resumed>) = 0 [pid 2838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2837] <... futex resumed>) = 0 [pid 2838] umount2("./file0", MNT_DETACH [pid 2837] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2838] <... umount2 resumed>) = 0 [pid 2837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2837] <... mmap resumed>) = 0x7fc84e05e000 [pid 2838] <... futex resumed>) = 0 [pid 2837] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2837] <... mprotect resumed>) = 0 [pid 2837] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2839 attached , parent_tid=[2839], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2839 [pid 2839] set_robust_list(0x7fc84e07e9e0, 24 [pid 2837] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2839] <... set_robust_list resumed>) = 0 [pid 2837] <... futex resumed>) = 0 [pid 2839] umount2("./file0", MNT_DETACH [pid 2837] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2839] <... umount2 resumed>) = 0 [pid 2839] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2837] <... futex resumed>) = 0 [pid 2837] exit_group(0 [pid 2839] <... futex resumed>) = 1 [pid 2838] <... futex resumed>) = ? [pid 2837] <... exit_group resumed>) = ? [pid 2838] +++ exited with 0 +++ [pid 2839] +++ exited with 0 +++ [pid 2837] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2837, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2840 ./strace-static-x86_64: Process 2840 attached [pid 2840] set_robust_list(0x5555564465e0, 24) = 0 [pid 2840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2840] setpgid(0, 0) = 0 [pid 2840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2840] write(3, "1000", 4) = 4 [pid 2840] close(3) = 0 [pid 2840] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2840] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2840] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2841 attached , parent_tid=[2841], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2841 [pid 2840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2841] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2841] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2840] <... futex resumed>) = 0 [pid 2840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2841] <... futex resumed>) = 0 [pid 2841] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2840] <... futex resumed>) = 0 [pid 2840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2841] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2840] <... futex resumed>) = 0 [pid 2840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2840] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2840] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2840] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2841] umount2("./file0", MNT_DETACH [pid 2840] <... clone resumed>, parent_tid=[2842], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2842 [pid 2840] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2840] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2842 attached [pid 2842] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2842] umount2("./file0", MNT_DETACH) = 0 [pid 2842] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2840] <... futex resumed>) = 0 [pid 2842] <... futex resumed>) = 1 [pid 2842] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2841] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 2841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2840] exit_group(0) = ? [pid 2842] <... futex resumed>) = ? [pid 2842] +++ exited with 0 +++ [pid 2841] <... futex resumed>) = ? [pid 2841] +++ exited with 0 +++ [pid 2840] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2840, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2843 attached , child_tidptr=0x5555564465d0) = 2843 [pid 2843] set_robust_list(0x5555564465e0, 24) = 0 [pid 2843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2843] setpgid(0, 0) = 0 [pid 2843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2843] write(3, "1000", 4) = 4 [pid 2843] close(3) = 0 [pid 2843] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2843] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2843] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2844 attached , parent_tid=[2844], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2844 [pid 2844] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2844] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2844] <... futex resumed>) = 0 [pid 2844] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2844] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2844] <... futex resumed>) = 0 [pid 2844] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2844] <... mount resumed>) = 0 [pid 2844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2843] <... futex resumed>) = 0 [pid 2843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2844] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2843] <... futex resumed>) = 0 [pid 2843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2843] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2843] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2843] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2844] umount2("./file0", MNT_DETACH [pid 2843] <... clone resumed>, parent_tid=[2845], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2845 [pid 2843] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2843] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2845 attached [pid 2845] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2845] umount2("./file0", MNT_DETACH [pid 2844] <... umount2 resumed>) = 0 [pid 2845] <... umount2 resumed>) = 0 [pid 2844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2845] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2843] <... futex resumed>) = 0 [pid 2843] exit_group(0) = ? [pid 2845] <... futex resumed>) = ? [pid 2844] <... futex resumed>) = ? [pid 2845] +++ exited with 0 +++ [pid 2844] +++ exited with 0 +++ [pid 2843] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2843, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2846 attached , child_tidptr=0x5555564465d0) = 2846 [pid 2846] set_robust_list(0x5555564465e0, 24) = 0 [pid 2846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2846] setpgid(0, 0) = 0 [pid 2846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2846] write(3, "1000", 4) = 4 [pid 2846] close(3) = 0 [pid 2846] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2846] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2846] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2847], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2847 ./strace-static-x86_64: Process 2847 attached [pid 2847] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2847] <... futex resumed>) = 0 [pid 2847] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2847] <... futex resumed>) = 0 [pid 2847] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2847] <... mount resumed>) = 0 [pid 2847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2846] <... futex resumed>) = 0 [pid 2846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2847] <... futex resumed>) = 0 [pid 2847] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2847] <... mount resumed>) = 0 [pid 2847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2846] <... futex resumed>) = 0 [pid 2846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2846] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2846] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2846] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2848], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2848 [pid 2847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2846] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2846] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2848 attached [pid 2848] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2848] umount2("./file0", MNT_DETACH [pid 2847] umount2("./file0", MNT_DETACH [pid 2848] <... umount2 resumed>) = 0 [pid 2847] <... umount2 resumed>) = 0 [pid 2848] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2846] <... futex resumed>) = 0 [pid 2848] <... futex resumed>) = 1 [pid 2848] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2846] exit_group(0) = ? [pid 2848] <... futex resumed>) = 231 [pid 2848] +++ exited with 0 +++ [pid 2847] <... futex resumed>) = ? [pid 2847] +++ exited with 0 +++ [pid 2846] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2846, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2849 ./strace-static-x86_64: Process 2849 attached [pid 2849] set_robust_list(0x5555564465e0, 24) = 0 [pid 2849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2849] setpgid(0, 0) = 0 [pid 2849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2849] write(3, "1000", 4) = 4 [pid 2849] close(3) = 0 [pid 2849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2849] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2849] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2850 attached , parent_tid=[2850], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2850 [pid 2850] set_robust_list(0x7fc84e09f9e0, 24 [pid 2849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2850] <... set_robust_list resumed>) = 0 [pid 2850] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2849] <... futex resumed>) = 0 [pid 2850] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2850] <... mount resumed>) = 0 [pid 2850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2849] <... futex resumed>) = 0 [pid 2850] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2850] <... mount resumed>) = 0 [pid 2850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2849] <... futex resumed>) = 0 [pid 2849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2849] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2849] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2850] umount2("./file0", MNT_DETACH [pid 2849] <... clone resumed>, parent_tid=[2851], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2851 [pid 2849] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2849] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2851 attached [pid 2850] <... umount2 resumed>) = 0 [pid 2851] set_robust_list(0x7fc84e07e9e0, 24 [pid 2850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2851] <... set_robust_list resumed>) = 0 [pid 2850] <... futex resumed>) = 0 [pid 2851] umount2("./file0", MNT_DETACH) = 0 [pid 2851] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2849] <... futex resumed>) = 0 [pid 2849] exit_group(0) = ? [pid 2851] <... futex resumed>) = ? [pid 2851] +++ exited with 0 +++ [pid 2850] +++ exited with 0 +++ [pid 2849] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2849, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2852 ./strace-static-x86_64: Process 2852 attached [pid 2852] set_robust_list(0x5555564465e0, 24) = 0 [pid 2852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2852] setpgid(0, 0) = 0 [pid 2852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2852] write(3, "1000", 4) = 4 [pid 2852] close(3) = 0 [pid 2852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2852] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2852] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2853 attached , parent_tid=[2853], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2853 [pid 2853] set_robust_list(0x7fc84e09f9e0, 24 [pid 2852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2853] <... set_robust_list resumed>) = 0 [pid 2852] <... futex resumed>) = 0 [pid 2853] mkdir("./file0", 000 [pid 2852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2853] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2852] <... futex resumed>) = 0 [pid 2853] <... futex resumed>) = 1 [pid 2852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2853] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2852] <... futex resumed>) = 0 [pid 2852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2853] <... mount resumed>) = 0 [pid 2853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2852] <... futex resumed>) = 0 [pid 2853] <... futex resumed>) = 1 [pid 2852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2853] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2852] <... futex resumed>) = 0 [pid 2852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2853] <... mount resumed>) = 0 [pid 2853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2852] <... futex resumed>) = 0 [pid 2853] umount2("./file0", MNT_DETACH [pid 2852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2852] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2852] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2853] <... umount2 resumed>) = 0 [pid 2852] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2854 attached [pid 2853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2854] set_robust_list(0x7fc84e07e9e0, 24 [pid 2853] <... futex resumed>) = 0 [pid 2852] <... clone resumed>, parent_tid=[2854], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2854 [pid 2854] <... set_robust_list resumed>) = 0 [pid 2853] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2852] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2854] umount2("./file0", MNT_DETACH [pid 2852] <... futex resumed>) = 0 [pid 2852] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2854] <... umount2 resumed>) = 0 [pid 2854] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2852] <... futex resumed>) = 0 [pid 2854] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2852] exit_group(0) = ? [pid 2854] <... futex resumed>) = ? [pid 2853] <... futex resumed>) = ? [pid 2854] +++ exited with 0 +++ [pid 2853] +++ exited with 0 +++ [pid 2852] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2852, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2855 ./strace-static-x86_64: Process 2855 attached [pid 2855] set_robust_list(0x5555564465e0, 24) = 0 [pid 2855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2855] setpgid(0, 0) = 0 [pid 2855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2855] write(3, "1000", 4) = 4 [pid 2855] close(3) = 0 [pid 2855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2855] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2855] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2856 attached [pid 2856] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] <... clone resumed>, parent_tid=[2856], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2856 [pid 2855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2856] <... futex resumed>) = 0 [pid 2856] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2856] <... futex resumed>) = 0 [pid 2856] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2856] <... mount resumed>) = 0 [pid 2856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2856] <... futex resumed>) = 0 [pid 2856] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2856] <... mount resumed>) = 0 [pid 2856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] <... futex resumed>) = 0 [pid 2855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2856] <... futex resumed>) = 0 [pid 2856] umount2("./file0", MNT_DETACH [pid 2855] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2856] <... umount2 resumed>) = 0 [pid 2855] <... futex resumed>) = 0 [pid 2856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2855] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2855] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2857 attached [pid 2857] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2857] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] <... clone resumed>, parent_tid=[2857], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2857 [pid 2855] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2857] <... futex resumed>) = 0 [pid 2857] umount2("./file0", MNT_DETACH [pid 2855] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2857] <... umount2 resumed>) = 0 [pid 2857] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2857] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2855] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2855] exit_group(0 [pid 2856] <... futex resumed>) = ? [pid 2855] <... exit_group resumed>) = ? [pid 2856] +++ exited with 0 +++ [pid 2857] <... futex resumed>) = ? [pid 2857] +++ exited with 0 +++ [pid 2855] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2858 ./strace-static-x86_64: Process 2858 attached [pid 2858] set_robust_list(0x5555564465e0, 24) = 0 [pid 2858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2858] setpgid(0, 0) = 0 [pid 2858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2858] write(3, "1000", 4) = 4 [pid 2858] close(3) = 0 [pid 2858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2858] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2858] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2859 attached [pid 2859] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2858] <... clone resumed>, parent_tid=[2859], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2859 [pid 2858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2859] <... futex resumed>) = 0 [pid 2859] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2859] <... futex resumed>) = 0 [pid 2858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2859] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2858] <... futex resumed>) = 0 [pid 2858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2859] <... futex resumed>) = 0 [pid 2858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2859] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2858] <... futex resumed>) = 0 [pid 2859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2858] <... futex resumed>) = 0 [pid 2859] umount2("./file0", MNT_DETACH [pid 2858] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2859] <... umount2 resumed>) = 0 [pid 2858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2858] <... mmap resumed>) = 0x7fc84e05e000 [pid 2859] <... futex resumed>) = 0 [pid 2858] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2858] <... mprotect resumed>) = 0 [pid 2858] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2860 attached , parent_tid=[2860], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2860 [pid 2860] set_robust_list(0x7fc84e07e9e0, 24 [pid 2858] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2860] <... set_robust_list resumed>) = 0 [pid 2858] <... futex resumed>) = 0 [pid 2860] umount2("./file0", MNT_DETACH [pid 2858] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2860] <... umount2 resumed>) = 0 [pid 2860] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2858] <... futex resumed>) = 0 [pid 2858] exit_group(0 [pid 2859] <... futex resumed>) = ? [pid 2858] <... exit_group resumed>) = ? [pid 2859] +++ exited with 0 +++ [pid 2860] +++ exited with 0 +++ [pid 2858] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2858, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2861 ./strace-static-x86_64: Process 2861 attached [pid 2861] set_robust_list(0x5555564465e0, 24) = 0 [pid 2861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2861] setpgid(0, 0) = 0 [pid 2861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2861] write(3, "1000", 4) = 4 [pid 2861] close(3) = 0 [pid 2861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2861] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2861] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2862 attached [pid 2862] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2862] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2861] <... clone resumed>, parent_tid=[2862], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2862 [pid 2861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2862] <... futex resumed>) = 0 [pid 2862] mkdir("./file0", 000 [pid 2861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2862] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2862] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2861] <... futex resumed>) = 0 [pid 2861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2862] <... futex resumed>) = 0 [pid 2862] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2862] <... mount resumed>) = 0 [pid 2862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2861] <... futex resumed>) = 0 [pid 2862] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2861] <... futex resumed>) = 0 [pid 2862] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2862] <... mount resumed>) = 0 [pid 2862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2861] <... futex resumed>) = 0 [pid 2862] umount2("./file0", MNT_DETACH [pid 2861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2861] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2861] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2861] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2862] <... umount2 resumed>) = 0 [pid 2862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2861] <... clone resumed>, parent_tid=[2863], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2863 [pid 2862] <... futex resumed>) = 0 [pid 2861] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2862] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2861] <... futex resumed>) = 0 [pid 2861] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2863 attached [pid 2863] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2863] umount2("./file0", MNT_DETACH) = 0 [pid 2863] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2861] <... futex resumed>) = 0 [pid 2861] exit_group(0) = ? [pid 2862] <... futex resumed>) = ? [pid 2862] +++ exited with 0 +++ [pid 2863] +++ exited with 0 +++ [pid 2861] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2861, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2864 ./strace-static-x86_64: Process 2864 attached [pid 2864] set_robust_list(0x5555564465e0, 24) = 0 [pid 2864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2864] setpgid(0, 0) = 0 [pid 2864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2864] write(3, "1000", 4) = 4 [pid 2864] close(3) = 0 [pid 2864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2864] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2864] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2865 attached , parent_tid=[2865], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2865 [pid 2865] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2865] <... futex resumed>) = 0 [pid 2865] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2865] <... futex resumed>) = 0 [pid 2865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2864] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2865] <... futex resumed>) = 0 [pid 2865] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2865] <... mount resumed>) = 0 [pid 2865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2864] <... futex resumed>) = 0 [pid 2864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2865] <... futex resumed>) = 0 [pid 2864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2865] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2864] <... futex resumed>) = 0 [pid 2864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2865] <... futex resumed>) = 0 [pid 2864] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2865] umount2("./file0", MNT_DETACH [pid 2864] <... futex resumed>) = 0 [pid 2864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2865] <... umount2 resumed>) = 0 [pid 2864] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2864] <... mprotect resumed>) = 0 [pid 2865] <... futex resumed>) = 0 [pid 2865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2864] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2866 attached , parent_tid=[2866], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2866 [pid 2866] set_robust_list(0x7fc84e07e9e0, 24 [pid 2864] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2866] <... set_robust_list resumed>) = 0 [pid 2864] <... futex resumed>) = 0 [pid 2866] umount2("./file0", MNT_DETACH [pid 2864] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2866] <... umount2 resumed>) = 0 [pid 2866] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2864] <... futex resumed>) = 0 [pid 2866] <... futex resumed>) = 1 [pid 2864] exit_group(0 [pid 2866] ????( [pid 2864] <... exit_group resumed>) = ? [pid 2865] <... futex resumed>) = ? [pid 2866] <... ???? resumed>) = ? [pid 2865] +++ exited with 0 +++ [pid 2866] +++ exited with 0 +++ [pid 2864] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2864, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2867 ./strace-static-x86_64: Process 2867 attached [pid 2867] set_robust_list(0x5555564465e0, 24) = 0 [pid 2867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2867] setpgid(0, 0) = 0 [pid 2867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2867] write(3, "1000", 4) = 4 [pid 2867] close(3) = 0 [pid 2867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2867] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2867] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2868 attached , parent_tid=[2868], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2868 [pid 2868] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2868] <... futex resumed>) = 0 [pid 2867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2868] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2868] <... futex resumed>) = 0 [pid 2868] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2868] <... mount resumed>) = 0 [pid 2868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2867] <... futex resumed>) = 0 [pid 2867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2868] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2867] <... futex resumed>) = 0 [pid 2867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2867] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2867] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2867] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2868] umount2("./file0", MNT_DETACH [pid 2867] <... clone resumed>, parent_tid=[2869], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2869 [pid 2867] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2868] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2869 attached [pid 2869] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2869] umount2("./file0", MNT_DETACH) = 0 [pid 2868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2867] <... futex resumed>) = 0 [pid 2869] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2869] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2868] <... futex resumed>) = 0 [pid 2867] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2867] exit_group(0 [pid 2868] <... futex resumed>) = ? [pid 2867] <... exit_group resumed>) = ? [pid 2869] <... futex resumed>) = ? [pid 2869] +++ exited with 0 +++ [pid 2868] +++ exited with 0 +++ [pid 2867] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2867, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2870 ./strace-static-x86_64: Process 2870 attached [pid 2870] set_robust_list(0x5555564465e0, 24) = 0 [pid 2870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2870] setpgid(0, 0) = 0 [pid 2870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2870] write(3, "1000", 4) = 4 [pid 2870] close(3) = 0 [pid 2870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2870] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2870] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2871 attached , parent_tid=[2871], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2871 [pid 2871] set_robust_list(0x7fc84e09f9e0, 24 [pid 2870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2871] <... set_robust_list resumed>) = 0 [pid 2871] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2870] <... futex resumed>) = 1 [pid 2871] <... futex resumed>) = 0 [pid 2871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2871] <... futex resumed>) = 0 [pid 2871] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2871] <... mount resumed>) = 0 [pid 2871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2871] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2870] <... futex resumed>) = 0 [pid 2871] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2871] <... mount resumed>) = 0 [pid 2871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2870] <... futex resumed>) = 0 [pid 2870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2871] <... futex resumed>) = 0 [pid 2871] umount2("./file0", MNT_DETACH [pid 2870] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2871] <... umount2 resumed>) = 0 [pid 2870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2870] <... mmap resumed>) = 0x7fc84e05e000 [pid 2870] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2870] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2872], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2872 ./strace-static-x86_64: Process 2872 attached [pid 2870] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2872] set_robust_list(0x7fc84e07e9e0, 24 [pid 2870] <... futex resumed>) = 0 [pid 2872] <... set_robust_list resumed>) = 0 [pid 2870] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2872] umount2("./file0", MNT_DETACH) = 0 [pid 2872] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2870] <... futex resumed>) = 0 [pid 2872] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2870] exit_group(0 [pid 2871] <... futex resumed>) = ? [pid 2871] +++ exited with 0 +++ [pid 2870] <... exit_group resumed>) = ? [pid 2872] <... futex resumed>) = ? [pid 2872] +++ exited with 0 +++ [pid 2870] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2870, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2873 ./strace-static-x86_64: Process 2873 attached [pid 2873] set_robust_list(0x5555564465e0, 24) = 0 [pid 2873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2873] setpgid(0, 0) = 0 [pid 2873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2873] write(3, "1000", 4) = 4 [pid 2873] close(3) = 0 [pid 2873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2873] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2873] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2874 attached [pid 2874] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2873] <... clone resumed>, parent_tid=[2874], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2874 [pid 2873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2874] <... futex resumed>) = 0 [pid 2874] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2874] <... futex resumed>) = 0 [pid 2874] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2874] <... mount resumed>) = 0 [pid 2874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2873] <... futex resumed>) = 0 [pid 2873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2874] <... futex resumed>) = 0 [pid 2873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2874] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2873] <... futex resumed>) = 0 [pid 2873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2874] <... futex resumed>) = 0 [pid 2874] umount2("./file0", MNT_DETACH [pid 2873] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2874] <... umount2 resumed>) = 0 [pid 2873] <... mmap resumed>) = 0x7fc84e05e000 [pid 2874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2873] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2873] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2875], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2875 ./strace-static-x86_64: Process 2875 attached [pid 2873] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2875] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2875] umount2("./file0", MNT_DETACH [pid 2873] <... futex resumed>) = 0 [pid 2875] <... umount2 resumed>) = 0 [pid 2873] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2875] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2875] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2873] exit_group(0 [pid 2875] <... futex resumed>) = 231 [pid 2873] <... exit_group resumed>) = ? [pid 2874] <... futex resumed>) = ? [pid 2874] +++ exited with 0 +++ [pid 2875] +++ exited with 0 +++ [pid 2873] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2873, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2876 ./strace-static-x86_64: Process 2876 attached [pid 2876] set_robust_list(0x5555564465e0, 24) = 0 [pid 2876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2876] setpgid(0, 0) = 0 [pid 2876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2876] write(3, "1000", 4) = 4 [pid 2876] close(3) = 0 [pid 2876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2876] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2876] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2877 attached , parent_tid=[2877], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2877 [pid 2877] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2877] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2877] <... futex resumed>) = 0 [pid 2876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2877] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2877] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2876] <... futex resumed>) = 0 [pid 2876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2877] <... futex resumed>) = 0 [pid 2877] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2877] <... mount resumed>) = 0 [pid 2877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2876] <... futex resumed>) = 0 [pid 2876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2877] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2876] <... futex resumed>) = 0 [pid 2876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2876] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2876] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2877] umount2("./file0", MNT_DETACH [pid 2876] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2878], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2878 [pid 2876] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2876] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2878 attached [pid 2878] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2878] umount2("./file0", MNT_DETACH [pid 2877] <... umount2 resumed>) = 0 [pid 2877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2878] <... umount2 resumed>) = 0 [pid 2878] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2876] <... futex resumed>) = 0 [pid 2876] exit_group(0) = ? [pid 2877] <... futex resumed>) = ? [pid 2878] <... futex resumed>) = ? [pid 2878] +++ exited with 0 +++ [pid 2877] +++ exited with 0 +++ [pid 2876] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2876, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2879 ./strace-static-x86_64: Process 2879 attached [pid 2879] set_robust_list(0x5555564465e0, 24) = 0 [pid 2879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2879] setpgid(0, 0) = 0 [pid 2879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2879] write(3, "1000", 4) = 4 [pid 2879] close(3) = 0 [pid 2879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2879] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2879] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2880 attached , parent_tid=[2880], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2880 [pid 2880] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2880] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2880] <... futex resumed>) = 0 [pid 2880] mkdir("./file0", 000 [pid 2879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2880] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2880] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2879] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2880] <... futex resumed>) = 0 [pid 2880] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2880] <... mount resumed>) = 0 [pid 2880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2879] <... futex resumed>) = 0 [pid 2879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2880] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2879] <... futex resumed>) = 0 [pid 2879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2879] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2879] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2879] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2880] umount2("./file0", MNT_DETACH [pid 2879] <... clone resumed>, parent_tid=[2881], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2881 [pid 2879] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2880] <... umount2 resumed>) = 0 [pid 2879] <... futex resumed>) = 0 [pid 2879] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2881 attached [pid 2881] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2881] umount2("./file0", MNT_DETACH [pid 2880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2881] <... umount2 resumed>) = 0 [pid 2881] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2879] <... futex resumed>) = 0 [pid 2879] exit_group(0) = ? [pid 2880] <... futex resumed>) = ? [pid 2881] <... futex resumed>) = ? [pid 2881] +++ exited with 0 +++ [pid 2880] +++ exited with 0 +++ [pid 2879] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2882 ./strace-static-x86_64: Process 2882 attached [pid 2882] set_robust_list(0x5555564465e0, 24) = 0 [pid 2882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2882] setpgid(0, 0) = 0 [pid 2882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2882] write(3, "1000", 4) = 4 [pid 2882] close(3) = 0 [pid 2882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2882] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2882] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2883], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2883 [pid 2882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2883 attached [pid 2883] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2883] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2882] <... futex resumed>) = 0 [pid 2882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2883] <... futex resumed>) = 1 [pid 2883] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2882] <... futex resumed>) = 0 [pid 2882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2883] <... futex resumed>) = 1 [pid 2883] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2882] <... futex resumed>) = 0 [pid 2883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2883] umount2("./file0", MNT_DETACH [pid 2882] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2882] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2882] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2884 attached , parent_tid=[2884], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2884 [pid 2883] <... umount2 resumed>) = 0 [pid 2882] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2882] <... futex resumed>) = 0 [pid 2884] set_robust_list(0x7fc84e07e9e0, 24 [pid 2883] <... futex resumed>) = 0 [pid 2882] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2884] <... set_robust_list resumed>) = 0 [pid 2883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2884] umount2("./file0", MNT_DETACH) = 0 [pid 2884] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2882] <... futex resumed>) = 0 [pid 2884] <... futex resumed>) = 1 [pid 2882] exit_group(0 [pid 2884] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2882] <... exit_group resumed>) = ? [pid 2884] <... futex resumed>) = ? [pid 2883] <... futex resumed>) = ? [pid 2883] +++ exited with 0 +++ [pid 2884] +++ exited with 0 +++ [pid 2882] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2882, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2885 ./strace-static-x86_64: Process 2885 attached [pid 2885] set_robust_list(0x5555564465e0, 24) = 0 [pid 2885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2885] setpgid(0, 0) = 0 [pid 2885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2885] write(3, "1000", 4) = 4 [pid 2885] close(3) = 0 [pid 2885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2885] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2885] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2886 attached , parent_tid=[2886], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2886 [pid 2886] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2886] <... futex resumed>) = 0 [pid 2886] mkdir("./file0", 000 [pid 2885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2886] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2886] <... futex resumed>) = 0 [pid 2886] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2886] <... mount resumed>) = 0 [pid 2886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2886] <... futex resumed>) = 0 [pid 2886] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2886] <... mount resumed>) = 0 [pid 2886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] <... futex resumed>) = 0 [pid 2885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2886] <... futex resumed>) = 0 [pid 2886] umount2("./file0", MNT_DETACH) = 0 [pid 2885] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] <... futex resumed>) = 0 [pid 2885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2885] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2885] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2887 attached , parent_tid=[2887], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2887 [pid 2887] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2887] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2887] <... futex resumed>) = 0 [pid 2887] umount2("./file0", MNT_DETACH [pid 2885] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2887] <... umount2 resumed>) = 0 [pid 2887] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2887] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2885] exit_group(0 [pid 2886] <... futex resumed>) = ? [pid 2885] <... exit_group resumed>) = ? [pid 2886] +++ exited with 0 +++ [pid 2887] <... futex resumed>) = ? [pid 2887] +++ exited with 0 +++ [pid 2885] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2885, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2888 ./strace-static-x86_64: Process 2888 attached [pid 2888] set_robust_list(0x5555564465e0, 24) = 0 [pid 2888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2888] setpgid(0, 0) = 0 [pid 2888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2888] write(3, "1000", 4) = 4 [pid 2888] close(3) = 0 [pid 2888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2888] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2888] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2889], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2889 [pid 2888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2889 attached [pid 2889] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2889] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2888] <... futex resumed>) = 0 [pid 2888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2889] <... futex resumed>) = 1 [pid 2889] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2888] <... futex resumed>) = 0 [pid 2889] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2889] <... mount resumed>) = 0 [pid 2889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2888] <... futex resumed>) = 0 [pid 2889] <... futex resumed>) = 1 [pid 2888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2889] umount2("./file0", MNT_DETACH [pid 2888] <... futex resumed>) = 0 [pid 2888] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2888] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2888] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2889] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2890 attached [pid 2889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2888] <... clone resumed>, parent_tid=[2890], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2890 [pid 2890] set_robust_list(0x7fc84e07e9e0, 24 [pid 2889] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2888] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2890] <... set_robust_list resumed>) = 0 [pid 2888] <... futex resumed>) = 0 [pid 2890] umount2("./file0", MNT_DETACH [pid 2888] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2890] <... umount2 resumed>) = 0 [pid 2890] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2888] <... futex resumed>) = 0 [pid 2888] exit_group(0) = ? [pid 2889] <... futex resumed>) = ? [pid 2889] +++ exited with 0 +++ [pid 2890] +++ exited with 0 +++ [pid 2888] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2888, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2891 ./strace-static-x86_64: Process 2891 attached [pid 2891] set_robust_list(0x5555564465e0, 24) = 0 [pid 2891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2891] setpgid(0, 0) = 0 [pid 2891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2891] write(3, "1000", 4) = 4 [pid 2891] close(3) = 0 [pid 2891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2891] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2891] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2892 attached , parent_tid=[2892], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2892 [pid 2892] set_robust_list(0x7fc84e09f9e0, 24 [pid 2891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2892] <... set_robust_list resumed>) = 0 [pid 2891] <... futex resumed>) = 0 [pid 2891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2892] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2891] <... futex resumed>) = 0 [pid 2892] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2892] <... mount resumed>) = 0 [pid 2892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2891] <... futex resumed>) = 0 [pid 2891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2892] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2891] <... futex resumed>) = 0 [pid 2891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2891] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2891] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2891] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2893 attached [pid 2892] umount2("./file0", MNT_DETACH [pid 2891] <... clone resumed>, parent_tid=[2893], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2893 [pid 2891] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2891] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2893] set_robust_list(0x7fc84e07e9e0, 24 [pid 2892] <... umount2 resumed>) = 0 [pid 2893] <... set_robust_list resumed>) = 0 [pid 2892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2893] umount2("./file0", MNT_DETACH [pid 2892] <... futex resumed>) = 0 [pid 2892] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2893] <... umount2 resumed>) = 0 [pid 2893] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2891] <... futex resumed>) = 0 [pid 2893] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2891] exit_group(0) = ? [pid 2892] <... futex resumed>) = ? [pid 2893] <... futex resumed>) = 231 [pid 2892] +++ exited with 0 +++ [pid 2893] +++ exited with 0 +++ [pid 2891] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2891, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2894 ./strace-static-x86_64: Process 2894 attached [pid 2894] set_robust_list(0x5555564465e0, 24) = 0 [pid 2894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2894] setpgid(0, 0) = 0 [pid 2894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2894] write(3, "1000", 4) = 4 [pid 2894] close(3) = 0 [pid 2894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2894] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2894] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2895 attached [pid 2895] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2895] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2894] <... clone resumed>, parent_tid=[2895], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2895 [pid 2894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2895] <... futex resumed>) = 0 [pid 2895] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2895] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2895] <... futex resumed>) = 0 [pid 2895] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2895] <... mount resumed>) = 0 [pid 2895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2895] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2895] <... futex resumed>) = 0 [pid 2895] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2895] <... mount resumed>) = 0 [pid 2895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2895] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2895] <... futex resumed>) = 0 [pid 2895] umount2("./file0", MNT_DETACH [pid 2894] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2895] <... umount2 resumed>) = 0 [pid 2894] <... futex resumed>) = 0 [pid 2895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2895] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2894] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2894] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2896 attached , parent_tid=[2896], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2896 [pid 2896] set_robust_list(0x7fc84e07e9e0, 24 [pid 2894] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2896] <... set_robust_list resumed>) = 0 [pid 2894] <... futex resumed>) = 0 [pid 2896] umount2("./file0", MNT_DETACH [pid 2894] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2896] <... umount2 resumed>) = 0 [pid 2896] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2894] <... futex resumed>) = 0 [pid 2896] <... futex resumed>) = 1 [pid 2894] exit_group(0 [pid 2896] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 2894] <... exit_group resumed>) = ? [pid 2895] <... futex resumed>) = ? [pid 2895] +++ exited with 0 +++ [pid 2896] +++ exited with 0 +++ [pid 2894] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2894, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2897 ./strace-static-x86_64: Process 2897 attached [pid 2897] set_robust_list(0x5555564465e0, 24) = 0 [pid 2897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2897] setpgid(0, 0) = 0 [pid 2897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2897] write(3, "1000", 4) = 4 [pid 2897] close(3) = 0 [pid 2897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2897] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2897] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2897] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2898 attached [pid 2898] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2898] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2897] <... clone resumed>, parent_tid=[2898], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2898 [pid 2897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2898] <... futex resumed>) = 0 [pid 2898] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2898] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2898] <... futex resumed>) = 0 [pid 2898] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2898] <... mount resumed>) = 0 [pid 2898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2898] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2898] <... futex resumed>) = 0 [pid 2898] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2898] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2898] <... futex resumed>) = 0 [pid 2898] umount2("./file0", MNT_DETACH [pid 2897] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2897] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2897] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2897] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2899 attached [pid 2898] <... umount2 resumed>) = 0 [pid 2898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2898] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2897] <... clone resumed>, parent_tid=[2899], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2899 [pid 2897] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2897] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2899] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2899] umount2("./file0", MNT_DETACH) = 0 [pid 2899] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2899] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2897] <... futex resumed>) = 0 [pid 2897] exit_group(0) = ? [pid 2898] <... futex resumed>) = ? [pid 2898] +++ exited with 0 +++ [pid 2899] <... futex resumed>) = ? [pid 2899] +++ exited with 0 +++ [pid 2897] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2897, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2900 ./strace-static-x86_64: Process 2900 attached [pid 2900] set_robust_list(0x5555564465e0, 24) = 0 [pid 2900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2900] setpgid(0, 0) = 0 [pid 2900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2900] write(3, "1000", 4) = 4 [pid 2900] close(3) = 0 [pid 2900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2900] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2900] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2901], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2901 [pid 2900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2901 attached [pid 2901] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2901] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2900] <... futex resumed>) = 0 [pid 2900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2901] <... futex resumed>) = 1 [pid 2901] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2900] <... futex resumed>) = 0 [pid 2900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2901] <... futex resumed>) = 1 [pid 2901] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2900] <... futex resumed>) = 0 [pid 2901] <... futex resumed>) = 1 [pid 2900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2901] umount2("./file0", MNT_DETACH [pid 2900] <... futex resumed>) = 0 [pid 2900] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2901] <... umount2 resumed>) = 0 [pid 2900] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2900] <... mprotect resumed>) = 0 [pid 2901] <... futex resumed>) = 0 [pid 2901] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2900] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2902 attached , parent_tid=[2902], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2902 [pid 2902] set_robust_list(0x7fc84e07e9e0, 24 [pid 2900] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2902] <... set_robust_list resumed>) = 0 [pid 2900] <... futex resumed>) = 0 [pid 2902] umount2("./file0", MNT_DETACH [pid 2900] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2902] <... umount2 resumed>) = 0 [pid 2902] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2900] <... futex resumed>) = 0 [pid 2902] <... futex resumed>) = 1 [pid 2900] exit_group(0 [pid 2902] ????( [pid 2900] <... exit_group resumed>) = ? [pid 2901] <... futex resumed>) = 231 [pid 2902] <... ???? resumed>) = ? [pid 2901] +++ exited with 0 +++ [pid 2902] +++ exited with 0 +++ [pid 2900] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2900, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2903 attached , child_tidptr=0x5555564465d0) = 2903 [pid 2903] set_robust_list(0x5555564465e0, 24) = 0 [pid 2903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2903] setpgid(0, 0) = 0 [pid 2903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2903] write(3, "1000", 4) = 4 [pid 2903] close(3) = 0 [pid 2903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2903] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2903] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2904 attached , parent_tid=[2904], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2904 [pid 2904] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2904] <... futex resumed>) = 0 [pid 2904] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2904] <... futex resumed>) = 0 [pid 2904] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2904] <... futex resumed>) = 0 [pid 2903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2904] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2903] <... futex resumed>) = 0 [pid 2903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2904] <... futex resumed>) = 0 [pid 2903] <... futex resumed>) = 1 [pid 2904] umount2("./file0", MNT_DETACH [pid 2903] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2904] <... umount2 resumed>) = 0 [pid 2904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2903] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2903] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2906 attached , parent_tid=[2906], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2906 [pid 2906] set_robust_list(0x7fc84e07e9e0, 24 [pid 2903] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2906] <... set_robust_list resumed>) = 0 [pid 2903] <... futex resumed>) = 0 [pid 2906] umount2("./file0", MNT_DETACH [pid 2903] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2906] <... umount2 resumed>) = 0 [pid 2906] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2903] <... futex resumed>) = 0 [pid 2903] exit_group(0 [pid 2906] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2904] <... futex resumed>) = ? [pid 2906] <... futex resumed>) = ? [pid 2904] +++ exited with 0 +++ [pid 2903] <... exit_group resumed>) = ? [pid 2906] +++ exited with 0 +++ [pid 2903] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2903, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2907 attached , child_tidptr=0x5555564465d0) = 2907 [pid 2907] set_robust_list(0x5555564465e0, 24) = 0 [pid 2907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2907] setpgid(0, 0) = 0 [pid 2907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2907] write(3, "1000", 4) = 4 [pid 2907] close(3) = 0 [pid 2907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2907] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2907] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2907] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2908 attached , parent_tid=[2908], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2908 [pid 2908] set_robust_list(0x7fc84e09f9e0, 24 [pid 2907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2908] <... set_robust_list resumed>) = 0 [pid 2908] mkdir("./file0", 000 [pid 2907] <... futex resumed>) = 0 [pid 2908] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2907] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2908] <... futex resumed>) = 0 [pid 2908] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2907] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2908] <... mount resumed>) = 0 [pid 2908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2907] <... futex resumed>) = 0 [pid 2907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2908] <... futex resumed>) = 0 [pid 2908] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2907] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2908] <... mount resumed>) = 0 [pid 2908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2907] <... futex resumed>) = 0 [pid 2907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2908] <... futex resumed>) = 0 [pid 2908] umount2("./file0", MNT_DETACH [pid 2907] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2907] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2908] <... umount2 resumed>) = 0 [pid 2907] <... mmap resumed>) = 0x7fc84e05e000 [pid 2908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2907] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2908] <... futex resumed>) = 0 [pid 2908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2907] <... mprotect resumed>) = 0 [pid 2907] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2909 attached , parent_tid=[2909], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2909 [pid 2909] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2909] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2907] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2909] <... futex resumed>) = 0 [pid 2909] umount2("./file0", MNT_DETACH [pid 2907] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2909] <... umount2 resumed>) = 0 [pid 2909] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2907] <... futex resumed>) = 0 [pid 2907] exit_group(0 [pid 2908] <... futex resumed>) = ? [pid 2908] +++ exited with 0 +++ [pid 2907] <... exit_group resumed>) = ? [pid 2909] +++ exited with 0 +++ [pid 2907] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2907, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2910 ./strace-static-x86_64: Process 2910 attached [pid 2910] set_robust_list(0x5555564465e0, 24) = 0 [pid 2910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2910] setpgid(0, 0) = 0 [pid 2910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2910] write(3, "1000", 4) = 4 [pid 2910] close(3) = 0 [pid 2910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2910] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2910] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2911 attached , parent_tid=[2911], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2911 [pid 2911] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2911] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2911] <... futex resumed>) = 0 [pid 2910] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2911] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2911] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2910] <... futex resumed>) = 0 [pid 2910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2911] <... futex resumed>) = 0 [pid 2910] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2911] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2911] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2910] <... futex resumed>) = 0 [pid 2910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2910] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2911] <... futex resumed>) = 0 [pid 2911] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2911] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2910] <... futex resumed>) = 0 [pid 2910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2911] <... futex resumed>) = 0 [pid 2910] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2911] umount2("./file0", MNT_DETACH [pid 2910] <... futex resumed>) = 0 [pid 2910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2911] <... umount2 resumed>) = 0 [pid 2910] <... mmap resumed>) = 0x7fc84e05e000 [pid 2911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2910] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2911] <... futex resumed>) = 0 [pid 2910] <... mprotect resumed>) = 0 [pid 2911] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2910] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2912 attached , parent_tid=[2912], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2912 [pid 2912] set_robust_list(0x7fc84e07e9e0, 24 [pid 2910] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2912] <... set_robust_list resumed>) = 0 [pid 2910] <... futex resumed>) = 0 [pid 2912] umount2("./file0", MNT_DETACH [pid 2910] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2912] <... umount2 resumed>) = 0 [pid 2912] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2910] <... futex resumed>) = 0 [pid 2912] <... futex resumed>) = 1 [pid 2910] exit_group(0 [pid 2912] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2910] <... exit_group resumed>) = ? [pid 2911] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2912] <... futex resumed>) = ? [pid 2911] +++ exited with 0 +++ [pid 2912] +++ exited with 0 +++ [pid 2910] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2910, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2913 attached , child_tidptr=0x5555564465d0) = 2913 [pid 2913] set_robust_list(0x5555564465e0, 24) = 0 [pid 2913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2913] setpgid(0, 0) = 0 [pid 2913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2913] write(3, "1000", 4) = 4 [pid 2913] close(3) = 0 [pid 2913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2913] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2913] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2913] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2914 attached [pid 2914] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2913] <... clone resumed>, parent_tid=[2914], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2914 [pid 2913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2914] <... futex resumed>) = 0 [pid 2914] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2913] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2914] <... futex resumed>) = 0 [pid 2914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2914] <... futex resumed>) = 0 [pid 2914] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2913] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2913] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2914] <... futex resumed>) = 0 [pid 2914] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2913] <... futex resumed>) = 0 [pid 2913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2914] <... futex resumed>) = 0 [pid 2914] umount2("./file0", MNT_DETACH [pid 2913] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2913] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2913] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2914] <... umount2 resumed>) = 0 [pid 2913] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 2915 attached [pid 2915] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2915] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2913] <... clone resumed>, parent_tid=[2915], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2915 [pid 2913] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2915] <... futex resumed>) = 0 [pid 2913] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2915] umount2("./file0", MNT_DETACH) = 0 [pid 2915] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2913] <... futex resumed>) = 0 [pid 2913] exit_group(0) = ? [pid 2914] <... futex resumed>) = ? [pid 2914] +++ exited with 0 +++ [pid 2915] +++ exited with 0 +++ [pid 2913] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2913, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2916 attached , child_tidptr=0x5555564465d0) = 2916 [pid 2916] set_robust_list(0x5555564465e0, 24) = 0 [pid 2916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2916] setpgid(0, 0) = 0 [pid 2916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2916] write(3, "1000", 4) = 4 [pid 2916] close(3) = 0 [pid 2916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2916] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2916] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2917 attached [pid 2917] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2916] <... clone resumed>, parent_tid=[2917], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2917 [pid 2916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2917] <... futex resumed>) = 0 [pid 2917] mkdir("./file0", 000 [pid 2916] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2917] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2916] <... futex resumed>) = 0 [pid 2916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2916] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2917] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2916] <... futex resumed>) = 0 [pid 2916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2916] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2917] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2916] <... futex resumed>) = 0 [pid 2916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2916] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2916] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2916] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2918], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2918 [pid 2917] umount2("./file0", MNT_DETACH [pid 2916] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2916] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2918 attached [pid 2918] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2918] umount2("./file0", MNT_DETACH) = 0 [pid 2918] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2916] <... futex resumed>) = 0 [pid 2918] <... futex resumed>) = 1 [pid 2918] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2917] <... umount2 resumed>) = 0 [pid 2917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2916] exit_group(0) = ? [pid 2918] <... futex resumed>) = ? [pid 2917] <... futex resumed>) = ? [pid 2918] +++ exited with 0 +++ [pid 2917] +++ exited with 0 +++ [pid 2916] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2916, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2919 attached , child_tidptr=0x5555564465d0) = 2919 [pid 2919] set_robust_list(0x5555564465e0, 24) = 0 [pid 2919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2919] setpgid(0, 0) = 0 [pid 2919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2919] write(3, "1000", 4) = 4 [pid 2919] close(3) = 0 [pid 2919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2919] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2919] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2919] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2920 attached , parent_tid=[2920], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2920 [pid 2920] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2920] <... futex resumed>) = 0 [pid 2920] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2920] <... futex resumed>) = 0 [pid 2920] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2920] <... mount resumed>) = 0 [pid 2920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2920] <... futex resumed>) = 0 [pid 2920] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2920] <... mount resumed>) = 0 [pid 2920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2920] <... futex resumed>) = 0 [pid 2920] umount2("./file0", MNT_DETACH) = 0 [pid 2920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2920] <... futex resumed>) = 0 [pid 2920] umount2("./file0", MNT_DETACH) = 0 [pid 2920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2919] exit_group(0) = ? [pid 2920] <... futex resumed>) = ? [pid 2920] +++ exited with 0 +++ [pid 2919] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2919, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2921 ./strace-static-x86_64: Process 2921 attached [pid 2921] set_robust_list(0x5555564465e0, 24) = 0 [pid 2921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2921] setpgid(0, 0) = 0 [pid 2921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2921] write(3, "1000", 4) = 4 [pid 2921] close(3) = 0 [pid 2921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2921] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2921] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2921] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2922], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2922 ./strace-static-x86_64: Process 2922 attached [pid 2922] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2922] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2921] <... futex resumed>) = 1 [pid 2922] <... futex resumed>) = 0 [pid 2922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2922] <... futex resumed>) = 0 [pid 2921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2922] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2921] <... futex resumed>) = 0 [pid 2921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2922] <... futex resumed>) = 0 [pid 2921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2922] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2921] <... futex resumed>) = 0 [pid 2921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2921] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2921] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2921] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2921] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2923], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2923 [pid 2922] umount2("./file0", MNT_DETACH [pid 2921] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2921] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2923 attached [pid 2923] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2923] umount2("./file0", MNT_DETACH [pid 2922] <... umount2 resumed>) = 0 [pid 2922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2923] <... umount2 resumed>) = 0 [pid 2923] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2921] <... futex resumed>) = 0 [pid 2921] exit_group(0) = ? [pid 2923] <... futex resumed>) = ? [pid 2922] <... futex resumed>) = ? [pid 2923] +++ exited with 0 +++ [pid 2922] +++ exited with 0 +++ [pid 2921] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2921, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2924 ./strace-static-x86_64: Process 2924 attached [pid 2924] set_robust_list(0x5555564465e0, 24) = 0 [pid 2924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2924] setpgid(0, 0) = 0 [pid 2924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2924] write(3, "1000", 4) = 4 [pid 2924] close(3) = 0 [pid 2924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2924] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2924] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2925], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2925 [pid 2924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2925 attached [pid 2925] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2925] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2924] <... futex resumed>) = 0 [pid 2924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2925] <... futex resumed>) = 1 [pid 2925] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2924] <... futex resumed>) = 0 [pid 2924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2925] <... futex resumed>) = 1 [pid 2925] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2924] <... futex resumed>) = 0 [pid 2925] <... futex resumed>) = 1 [pid 2924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2925] umount2("./file0", MNT_DETACH [pid 2924] <... futex resumed>) = 0 [pid 2924] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2924] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2924] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2925] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2926 attached [pid 2925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2924] <... clone resumed>, parent_tid=[2926], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2926 [pid 2926] set_robust_list(0x7fc84e07e9e0, 24 [pid 2925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2924] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2926] <... set_robust_list resumed>) = 0 [pid 2924] <... futex resumed>) = 0 [pid 2926] umount2("./file0", MNT_DETACH [pid 2924] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2926] <... umount2 resumed>) = 0 [pid 2926] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2924] <... futex resumed>) = 0 [pid 2926] <... futex resumed>) = 1 [pid 2924] exit_group(0 [pid 2926] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2924] <... exit_group resumed>) = ? [pid 2925] <... futex resumed>) = ? [pid 2926] <... futex resumed>) = ? [pid 2925] +++ exited with 0 +++ [pid 2926] +++ exited with 0 +++ [pid 2924] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2927 ./strace-static-x86_64: Process 2927 attached [pid 2927] set_robust_list(0x5555564465e0, 24) = 0 [pid 2927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2927] setpgid(0, 0) = 0 [pid 2927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2927] write(3, "1000", 4) = 4 [pid 2927] close(3) = 0 [pid 2927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2927] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2927] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2928 attached [pid 2928] set_robust_list(0x7fc84e09f9e0, 24 [pid 2927] <... clone resumed>, parent_tid=[2928], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2928 [pid 2928] <... set_robust_list resumed>) = 0 [pid 2928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2928] <... futex resumed>) = 0 [pid 2928] mkdir("./file0", 000 [pid 2927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2928] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2927] <... futex resumed>) = 0 [pid 2927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2928] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2927] <... futex resumed>) = 0 [pid 2927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2928] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2927] <... futex resumed>) = 0 [pid 2928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2927] <... futex resumed>) = 0 [pid 2928] umount2("./file0", MNT_DETACH [pid 2927] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2928] <... umount2 resumed>) = 0 [pid 2927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2927] <... mmap resumed>) = 0x7fc84e05e000 [pid 2928] <... futex resumed>) = 0 [pid 2927] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2927] <... mprotect resumed>) = 0 [pid 2927] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2929 attached , parent_tid=[2929], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2929 [pid 2927] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2927] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2929] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2929] umount2("./file0", MNT_DETACH) = 0 [pid 2929] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2927] <... futex resumed>) = 0 [pid 2927] exit_group(0 [pid 2928] <... futex resumed>) = ? [pid 2927] <... exit_group resumed>) = ? [pid 2928] +++ exited with 0 +++ [pid 2929] +++ exited with 0 +++ [pid 2927] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2930 attached , child_tidptr=0x5555564465d0) = 2930 [pid 2930] set_robust_list(0x5555564465e0, 24) = 0 [pid 2930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2930] setpgid(0, 0) = 0 [pid 2930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2930] write(3, "1000", 4) = 4 [pid 2930] close(3) = 0 [pid 2930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2930] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2930] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2931 attached , parent_tid=[2931], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2931 [pid 2931] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2931] <... futex resumed>) = 0 [pid 2931] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2931] <... futex resumed>) = 0 [pid 2931] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2931] <... mount resumed>) = 0 [pid 2931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2931] <... futex resumed>) = 0 [pid 2931] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2931] <... mount resumed>) = 0 [pid 2931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2931] <... futex resumed>) = 0 [pid 2931] umount2("./file0", MNT_DETACH) = 0 [pid 2931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2931] <... futex resumed>) = 0 [pid 2931] umount2("./file0", MNT_DETACH) = 0 [pid 2931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2930] exit_group(0) = ? [pid 2931] <... futex resumed>) = ? [pid 2931] +++ exited with 0 +++ [pid 2930] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2930, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2932 ./strace-static-x86_64: Process 2932 attached [pid 2932] set_robust_list(0x5555564465e0, 24) = 0 [pid 2932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2932] setpgid(0, 0) = 0 [pid 2932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2932] write(3, "1000", 4) = 4 [pid 2932] close(3) = 0 [pid 2932] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2932] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2932] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2933 attached [pid 2933] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2932] <... clone resumed>, parent_tid=[2933], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2933 [pid 2932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2933] <... futex resumed>) = 0 [pid 2933] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2932] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2933] <... futex resumed>) = 0 [pid 2933] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2932] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2933] <... mount resumed>) = 0 [pid 2933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2932] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2933] <... futex resumed>) = 0 [pid 2933] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2932] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2933] <... mount resumed>) = 0 [pid 2933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2932] <... futex resumed>) = 0 [pid 2932] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2933] <... futex resumed>) = 0 [pid 2933] umount2("./file0", MNT_DETACH) = 0 [pid 2932] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2932] <... futex resumed>) = 0 [pid 2933] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2932] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2932] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2934], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2934 [pid 2932] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2932] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2934 attached [pid 2934] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2934] umount2("./file0", MNT_DETACH) = 0 [pid 2934] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2932] <... futex resumed>) = 0 [pid 2934] <... futex resumed>) = 1 [pid 2932] exit_group(0 [pid 2934] ????( [pid 2932] <... exit_group resumed>) = ? [pid 2933] <... futex resumed>) = ? [pid 2933] +++ exited with 0 +++ [pid 2934] <... ???? resumed>) = 0xe6 [pid 2934] +++ exited with 0 +++ [pid 2932] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2932, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2935 ./strace-static-x86_64: Process 2935 attached [pid 2935] set_robust_list(0x5555564465e0, 24) = 0 [pid 2935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2935] setpgid(0, 0) = 0 [pid 2935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2935] write(3, "1000", 4) = 4 [pid 2935] close(3) = 0 [pid 2935] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2935] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2935] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2935] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2936 attached [pid 2936] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2935] <... clone resumed>, parent_tid=[2936], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2936 [pid 2935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2936] <... futex resumed>) = 0 [pid 2936] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2935] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2936] <... futex resumed>) = 0 [pid 2936] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2935] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2936] <... mount resumed>) = 0 [pid 2936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2936] <... futex resumed>) = 0 [pid 2936] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2935] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2936] <... mount resumed>) = 0 [pid 2936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2935] <... futex resumed>) = 0 [pid 2935] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2936] <... futex resumed>) = 0 [pid 2935] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2935] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2935] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2935] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2936] umount2("./file0", MNT_DETACH [pid 2935] <... clone resumed>, parent_tid=[2937], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2937 [pid 2935] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2935] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2937 attached [pid 2937] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2937] umount2("./file0", MNT_DETACH) = 0 [pid 2936] <... umount2 resumed>) = 0 [pid 2937] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2935] <... futex resumed>) = 0 [pid 2937] <... futex resumed>) = 1 [pid 2937] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2936] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2935] exit_group(0) = ? [pid 2937] <... futex resumed>) = ? [pid 2936] <... futex resumed>) = ? [pid 2937] +++ exited with 0 +++ [pid 2936] +++ exited with 0 +++ [pid 2935] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2935, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2938 ./strace-static-x86_64: Process 2938 attached [pid 2938] set_robust_list(0x5555564465e0, 24) = 0 [pid 2938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2938] setpgid(0, 0) = 0 [pid 2938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2938] write(3, "1000", 4) = 4 [pid 2938] close(3) = 0 [pid 2938] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2938] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2938] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2939 attached , parent_tid=[2939], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2939 [pid 2939] set_robust_list(0x7fc84e09f9e0, 24 [pid 2938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2939] <... set_robust_list resumed>) = 0 [pid 2938] <... futex resumed>) = 0 [pid 2938] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2939] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2938] <... futex resumed>) = 0 [pid 2939] <... futex resumed>) = 1 [pid 2938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2939] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2938] <... futex resumed>) = 0 [pid 2938] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2939] <... mount resumed>) = 0 [pid 2939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2938] <... futex resumed>) = 0 [pid 2939] <... futex resumed>) = 1 [pid 2938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2939] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2938] <... futex resumed>) = 0 [pid 2938] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2939] <... mount resumed>) = 0 [pid 2939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2938] <... futex resumed>) = 0 [pid 2939] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2938] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2938] <... futex resumed>) = 0 [pid 2939] umount2("./file0", MNT_DETACH [pid 2938] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2938] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2938] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2939] <... umount2 resumed>) = 0 [pid 2939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 2940 attached ) = 0 [pid 2938] <... clone resumed>, parent_tid=[2940], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2940 [pid 2940] set_robust_list(0x7fc84e07e9e0, 24 [pid 2939] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2940] <... set_robust_list resumed>) = 0 [pid 2938] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2940] umount2("./file0", MNT_DETACH [pid 2938] <... futex resumed>) = 0 [pid 2938] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2940] <... umount2 resumed>) = 0 [pid 2940] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2938] <... futex resumed>) = 0 [pid 2940] <... futex resumed>) = 1 [pid 2938] exit_group(0 [pid 2940] ????( [pid 2938] <... exit_group resumed>) = ? [pid 2940] <... ???? resumed>) = ? [pid 2939] <... futex resumed>) = ? [pid 2939] +++ exited with 0 +++ [pid 2940] +++ exited with 0 +++ [pid 2938] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2938, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2941 attached , child_tidptr=0x5555564465d0) = 2941 [pid 2941] set_robust_list(0x5555564465e0, 24) = 0 [pid 2941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2941] setpgid(0, 0) = 0 [pid 2941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2941] write(3, "1000", 4) = 4 [pid 2941] close(3) = 0 [pid 2941] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2941] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2941] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2942 attached [pid 2942] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2941] <... clone resumed>, parent_tid=[2942], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2942 [pid 2941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2942] <... futex resumed>) = 0 [pid 2942] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2941] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2942] <... futex resumed>) = 0 [pid 2942] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2941] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2942] <... mount resumed>) = 0 [pid 2942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2942] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2941] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2942] <... futex resumed>) = 0 [pid 2942] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2941] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2942] <... mount resumed>) = 0 [pid 2942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2941] <... futex resumed>) = 0 [pid 2941] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2941] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2942] umount2("./file0", MNT_DETACH [pid 2941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2941] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2941] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2943], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2943 [pid 2941] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2941] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2943 attached [pid 2943] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2943] umount2("./file0", MNT_DETACH [pid 2942] <... umount2 resumed>) = 0 [pid 2943] <... umount2 resumed>) = 0 [pid 2942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2943] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2941] <... futex resumed>) = 0 [pid 2941] exit_group(0) = ? [pid 2943] <... futex resumed>) = ? [pid 2942] <... futex resumed>) = ? [pid 2943] +++ exited with 0 +++ [pid 2942] +++ exited with 0 +++ [pid 2941] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2941, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2944 ./strace-static-x86_64: Process 2944 attached [pid 2944] set_robust_list(0x5555564465e0, 24) = 0 [pid 2944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2944] setpgid(0, 0) = 0 [pid 2944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2944] write(3, "1000", 4) = 4 [pid 2944] close(3) = 0 [pid 2944] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2944] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2944] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2945 attached , parent_tid=[2945], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2945 [pid 2945] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2945] <... futex resumed>) = 0 [pid 2945] mkdir("./file0", 000 [pid 2944] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2945] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2944] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2945] <... futex resumed>) = 0 [pid 2945] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] <... futex resumed>) = 0 [pid 2944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2945] <... futex resumed>) = 0 [pid 2944] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2945] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] <... futex resumed>) = 0 [pid 2944] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2945] <... futex resumed>) = 0 [pid 2944] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2945] umount2("./file0", MNT_DETACH [pid 2944] <... futex resumed>) = 0 [pid 2944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2944] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2945] <... umount2 resumed>) = 0 [pid 2945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2945] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] <... mprotect resumed>) = 0 [pid 2944] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2946 attached , parent_tid=[2946], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2946 [pid 2946] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2946] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2946] <... futex resumed>) = 0 [pid 2946] umount2("./file0", MNT_DETACH [pid 2944] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2946] <... umount2 resumed>) = 0 [pid 2946] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2944] <... futex resumed>) = 0 [pid 2946] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2944] exit_group(0 [pid 2945] <... futex resumed>) = ? [pid 2944] <... exit_group resumed>) = ? [pid 2945] +++ exited with 0 +++ [pid 2946] <... futex resumed>) = ? [pid 2946] +++ exited with 0 +++ [pid 2944] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2944, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2947 ./strace-static-x86_64: Process 2947 attached [pid 2947] set_robust_list(0x5555564465e0, 24) = 0 [pid 2947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2947] setpgid(0, 0) = 0 [pid 2947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2947] write(3, "1000", 4) = 4 [pid 2947] close(3) = 0 [pid 2947] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2947] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2947] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2947] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2948 attached , parent_tid=[2948], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2948 [pid 2948] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2948] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2947] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] <... futex resumed>) = 0 [pid 2948] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2947] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2948] <... mount resumed>) = 0 [pid 2948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2947] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] <... futex resumed>) = 0 [pid 2948] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2947] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2948] <... mount resumed>) = 0 [pid 2948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2947] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2948] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2948] umount2("./file0", MNT_DETACH [pid 2947] <... futex resumed>) = 0 [pid 2947] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2947] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2947] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2948] <... umount2 resumed>) = 0 [pid 2948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2947] <... clone resumed>, parent_tid=[2949], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2949 [pid 2948] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2948] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2947] <... futex resumed>) = 0 [pid 2947] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2949 attached [pid 2949] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2949] umount2("./file0", MNT_DETACH) = 0 [pid 2949] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2949] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2947] <... futex resumed>) = 0 [pid 2947] exit_group(0 [pid 2948] <... futex resumed>) = ? [pid 2947] <... exit_group resumed>) = ? [pid 2949] <... futex resumed>) = 231 [pid 2948] +++ exited with 0 +++ [pid 2949] +++ exited with 0 +++ [pid 2947] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2947, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2950 ./strace-static-x86_64: Process 2950 attached [pid 2950] set_robust_list(0x5555564465e0, 24) = 0 [pid 2950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2950] setpgid(0, 0) = 0 [pid 2950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2950] write(3, "1000", 4) = 4 [pid 2950] close(3) = 0 [pid 2950] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2950] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2950] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2951 attached , parent_tid=[2951], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2951 [pid 2951] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2951] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2951] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] <... futex resumed>) = 1 [pid 2950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2951] <... futex resumed>) = 0 [pid 2951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2951] <... futex resumed>) = 0 [pid 2951] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2951] <... mount resumed>) = 0 [pid 2951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2951] <... futex resumed>) = 0 [pid 2951] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2950] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2951] <... mount resumed>) = 0 [pid 2951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] <... futex resumed>) = 0 [pid 2950] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2951] <... futex resumed>) = 0 [pid 2951] umount2("./file0", MNT_DETACH [pid 2950] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2951] <... umount2 resumed>) = 0 [pid 2951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2951] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] <... futex resumed>) = 0 [pid 2950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2950] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2950] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2952 attached , parent_tid=[2952], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2952 [pid 2952] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2952] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2952] <... futex resumed>) = 0 [pid 2950] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2952] umount2("./file0", MNT_DETACH) = 0 [pid 2952] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2950] <... futex resumed>) = 0 [pid 2952] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2950] exit_group(0 [pid 2951] <... futex resumed>) = ? [pid 2950] <... exit_group resumed>) = ? [pid 2951] +++ exited with 0 +++ [pid 2952] <... futex resumed>) = ? [pid 2952] +++ exited with 0 +++ [pid 2950] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2950, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2953 attached , child_tidptr=0x5555564465d0) = 2953 [pid 2953] set_robust_list(0x5555564465e0, 24) = 0 [pid 2953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2953] setpgid(0, 0) = 0 [pid 2953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2953] write(3, "1000", 4) = 4 [pid 2953] close(3) = 0 [pid 2953] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2953] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2953] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2954 attached , parent_tid=[2954], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2954 [pid 2953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2954] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2954] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2954] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2953] <... futex resumed>) = 0 [pid 2953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2954] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2953] <... futex resumed>) = 0 [pid 2954] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2954] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2953] <... futex resumed>) = 0 [pid 2953] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2953] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2954] umount2("./file0", MNT_DETACH [pid 2953] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2954] <... umount2 resumed>) = 0 [pid 2954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2953] <... clone resumed>, parent_tid=[2955], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2955 [pid 2954] <... futex resumed>) = 0 [pid 2953] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2953] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2955 attached [pid 2955] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2955] umount2("./file0", MNT_DETACH [pid 2954] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2955] <... umount2 resumed>) = 0 [pid 2955] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2953] <... futex resumed>) = 0 [pid 2953] exit_group(0) = ? [pid 2954] <... futex resumed>) = ? [pid 2954] +++ exited with 0 +++ [pid 2955] <... futex resumed>) = ? [pid 2955] +++ exited with 0 +++ [pid 2953] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2953, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2956 ./strace-static-x86_64: Process 2956 attached [pid 2956] set_robust_list(0x5555564465e0, 24) = 0 [pid 2956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2956] setpgid(0, 0) = 0 [pid 2956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2956] write(3, "1000", 4) = 4 [pid 2956] close(3) = 0 [pid 2956] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2956] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2956] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2957 attached [pid 2957] set_robust_list(0x7fc84e09f9e0, 24 [pid 2956] <... clone resumed>, parent_tid=[2957], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2957 [pid 2957] <... set_robust_list resumed>) = 0 [pid 2956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2957] mkdir("./file0", 000 [pid 2956] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2957] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2956] <... futex resumed>) = 0 [pid 2956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2956] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2957] <... futex resumed>) = 1 [pid 2957] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2956] <... futex resumed>) = 0 [pid 2956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2956] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2957] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2956] <... futex resumed>) = 0 [pid 2956] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2957] umount2("./file0", MNT_DETACH [pid 2956] <... futex resumed>) = 0 [pid 2956] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2956] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2956] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2957] <... umount2 resumed>) = 0 [pid 2956] <... clone resumed>, parent_tid=[2958], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2958 [pid 2957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2956] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2956] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2958 attached [pid 2958] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2958] umount2("./file0", MNT_DETACH [pid 2957] <... futex resumed>) = 0 [pid 2958] <... umount2 resumed>) = 0 [pid 2957] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2958] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2956] <... futex resumed>) = 0 [pid 2958] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2956] exit_group(0) = ? [pid 2958] <... futex resumed>) = ? [pid 2958] +++ exited with 0 +++ [pid 2957] <... futex resumed>) = ? [pid 2957] +++ exited with 0 +++ [pid 2956] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2956, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2959 attached , child_tidptr=0x5555564465d0) = 2959 [pid 2959] set_robust_list(0x5555564465e0, 24) = 0 [pid 2959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2959] setpgid(0, 0) = 0 [pid 2959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2959] write(3, "1000", 4) = 4 [pid 2959] close(3) = 0 [pid 2959] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2959] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2959] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2959] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2960 attached , parent_tid=[2960], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2960 [pid 2960] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2960] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2960] <... futex resumed>) = 0 [pid 2959] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2960] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2959] <... futex resumed>) = 0 [pid 2959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2959] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2960] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2959] <... futex resumed>) = 0 [pid 2960] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2959] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2960] <... mount resumed>) = 0 [pid 2960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2959] <... futex resumed>) = 0 [pid 2960] umount2("./file0", MNT_DETACH [pid 2959] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2960] <... umount2 resumed>) = 0 [pid 2960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2959] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2960] <... futex resumed>) = 0 [pid 2959] <... futex resumed>) = 0 [pid 2960] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2959] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2959] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2959] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2961 attached , parent_tid=[2961], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2961 [pid 2961] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2961] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2959] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2961] <... futex resumed>) = 0 [pid 2961] umount2("./file0", MNT_DETACH [pid 2959] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2961] <... umount2 resumed>) = 0 [pid 2961] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2961] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2959] <... futex resumed>) = 0 [pid 2959] exit_group(0) = ? [pid 2960] <... futex resumed>) = ? [pid 2961] <... futex resumed>) = ? [pid 2961] +++ exited with 0 +++ [pid 2960] +++ exited with 0 +++ [pid 2959] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2959, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2962 ./strace-static-x86_64: Process 2962 attached [pid 2962] set_robust_list(0x5555564465e0, 24) = 0 [pid 2962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2962] setpgid(0, 0) = 0 [pid 2962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2962] write(3, "1000", 4) = 4 [pid 2962] close(3) = 0 [pid 2962] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2962] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2962] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2963 attached [pid 2963] set_robust_list(0x7fc84e09f9e0, 24 [pid 2962] <... clone resumed>, parent_tid=[2963], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2963 [pid 2963] <... set_robust_list resumed>) = 0 [pid 2962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2963] mkdir("./file0", 000 [pid 2962] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2963] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2962] <... futex resumed>) = 0 [pid 2963] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2962] <... futex resumed>) = 0 [pid 2963] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2962] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2963] <... mount resumed>) = 0 [pid 2963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2962] <... futex resumed>) = 0 [pid 2963] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2962] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2963] <... mount resumed>) = 0 [pid 2963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2962] <... futex resumed>) = 0 [pid 2963] umount2("./file0", MNT_DETACH [pid 2962] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2962] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2962] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2962] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2964 attached [pid 2964] set_robust_list(0x7fc84e07e9e0, 24 [pid 2962] <... clone resumed>, parent_tid=[2964], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2964 [pid 2964] <... set_robust_list resumed>) = 0 [pid 2962] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2964] umount2("./file0", MNT_DETACH [pid 2962] <... futex resumed>) = 0 [pid 2962] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2964] <... umount2 resumed>) = 0 [pid 2964] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2962] <... futex resumed>) = 0 [pid 2964] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2963] <... umount2 resumed>) = 0 [pid 2963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2963] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2962] exit_group(0) = ? [pid 2964] <... futex resumed>) = ? [pid 2964] +++ exited with 0 +++ [pid 2963] <... futex resumed>) = ? [pid 2963] +++ exited with 0 +++ [pid 2962] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2962, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2965 ./strace-static-x86_64: Process 2965 attached [pid 2965] set_robust_list(0x5555564465e0, 24) = 0 [pid 2965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2965] setpgid(0, 0) = 0 [pid 2965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2965] write(3, "1000", 4) = 4 [pid 2965] close(3) = 0 [pid 2965] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2965] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2965] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2966 attached , parent_tid=[2966], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2966 [pid 2966] set_robust_list(0x7fc84e09f9e0, 24 [pid 2965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2966] <... set_robust_list resumed>) = 0 [pid 2965] <... futex resumed>) = 0 [pid 2965] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2966] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2965] <... futex resumed>) = 0 [pid 2966] <... futex resumed>) = 1 [pid 2965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2966] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2965] <... futex resumed>) = 0 [pid 2965] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2966] <... mount resumed>) = 0 [pid 2966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2965] <... futex resumed>) = 0 [pid 2966] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2966] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2965] <... futex resumed>) = 0 [pid 2966] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2965] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2966] <... mount resumed>) = 0 [pid 2966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2965] <... futex resumed>) = 0 [pid 2965] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2965] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2965] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2965] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2967 attached [pid 2967] set_robust_list(0x7fc84e07e9e0, 24 [pid 2965] <... clone resumed>, parent_tid=[2967], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2967 [pid 2967] <... set_robust_list resumed>) = 0 [pid 2965] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2967] umount2("./file0", MNT_DETACH [pid 2965] <... futex resumed>) = 0 [pid 2965] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2966] umount2("./file0", MNT_DETACH [pid 2967] <... umount2 resumed>) = 0 [pid 2967] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2965] <... futex resumed>) = 0 [pid 2967] <... futex resumed>) = 1 [pid 2967] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2966] <... umount2 resumed>) = 0 [pid 2966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2966] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2965] exit_group(0) = ? [pid 2967] <... futex resumed>) = ? [pid 2967] +++ exited with 0 +++ [pid 2966] <... futex resumed>) = ? [pid 2966] +++ exited with 0 +++ [pid 2965] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2965, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2968 ./strace-static-x86_64: Process 2968 attached [pid 2968] set_robust_list(0x5555564465e0, 24) = 0 [pid 2968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2968] setpgid(0, 0) = 0 [pid 2968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2968] write(3, "1000", 4) = 4 [pid 2968] close(3) = 0 [pid 2968] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2968] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2968] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2969 attached , parent_tid=[2969], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2969 [pid 2969] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2969] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2969] <... futex resumed>) = 0 [pid 2969] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2969] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2968] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2969] <... futex resumed>) = 0 [pid 2969] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2968] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2969] <... mount resumed>) = 0 [pid 2969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2969] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2968] <... futex resumed>) = 0 [pid 2968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2969] <... futex resumed>) = 0 [pid 2969] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2968] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2969] <... mount resumed>) = 0 [pid 2969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2968] <... futex resumed>) = 0 [pid 2969] umount2("./file0", MNT_DETACH [pid 2968] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2968] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2968] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2968] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2970 attached , parent_tid=[2970], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2970 [pid 2970] set_robust_list(0x7fc84e07e9e0, 24 [pid 2968] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2970] <... set_robust_list resumed>) = 0 [pid 2968] <... futex resumed>) = 0 [pid 2970] umount2("./file0", MNT_DETACH [pid 2968] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2969] <... umount2 resumed>) = 0 [pid 2970] <... umount2 resumed>) = 0 [pid 2969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2969] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2970] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2968] <... futex resumed>) = 0 [pid 2970] <... futex resumed>) = 1 [pid 2968] exit_group(0 [pid 2970] ????() = 0xe7 [pid 2968] <... exit_group resumed>) = ? [pid 2970] +++ exited with 0 +++ [pid 2969] <... futex resumed>) = ? [pid 2969] +++ exited with 0 +++ [pid 2968] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2968, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2971 ./strace-static-x86_64: Process 2971 attached [pid 2971] set_robust_list(0x5555564465e0, 24) = 0 [pid 2971] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2971] setpgid(0, 0) = 0 [pid 2971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2971] write(3, "1000", 4) = 4 [pid 2971] close(3) = 0 [pid 2971] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2971] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2971] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2971] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2972 attached [pid 2972] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2971] <... clone resumed>, parent_tid=[2972], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2972 [pid 2971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2972] <... futex resumed>) = 0 [pid 2972] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2972] <... futex resumed>) = 0 [pid 2972] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2971] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2972] <... futex resumed>) = 0 [pid 2972] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2972] <... mount resumed>) = 0 [pid 2972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2971] <... futex resumed>) = 0 [pid 2971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2972] <... futex resumed>) = 0 [pid 2972] umount2("./file0", MNT_DETACH) = 0 [pid 2972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2971] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2972] <... futex resumed>) = 0 [pid 2972] umount2("./file0", MNT_DETACH) = 0 [pid 2972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2972] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2971] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2971] exit_group(0) = ? [pid 2972] <... futex resumed>) = ? [pid 2972] +++ exited with 0 +++ [pid 2971] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2971, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2973 ./strace-static-x86_64: Process 2973 attached [pid 2973] set_robust_list(0x5555564465e0, 24) = 0 [pid 2973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2973] setpgid(0, 0) = 0 [pid 2973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2973] write(3, "1000", 4) = 4 [pid 2973] close(3) = 0 [pid 2973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2973] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2973] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2973] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2974 attached , parent_tid=[2974], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2974 [pid 2974] set_robust_list(0x7fc84e09f9e0, 24 [pid 2973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2974] <... set_robust_list resumed>) = 0 [pid 2973] <... futex resumed>) = 0 [pid 2973] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2974] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2973] <... futex resumed>) = 0 [pid 2974] <... futex resumed>) = 1 [pid 2973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2974] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2973] <... futex resumed>) = 0 [pid 2973] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2974] <... mount resumed>) = 0 [pid 2974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2973] <... futex resumed>) = 0 [pid 2974] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2973] <... futex resumed>) = 0 [pid 2974] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2973] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2974] <... mount resumed>) = 0 [pid 2974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2973] <... futex resumed>) = 0 [pid 2974] <... futex resumed>) = 1 [pid 2973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2973] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2973] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2973] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2973] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2975 attached [pid 2974] umount2("./file0", MNT_DETACH [pid 2973] <... clone resumed>, parent_tid=[2975], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2975 [pid 2975] set_robust_list(0x7fc84e07e9e0, 24 [pid 2973] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2973] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2975] <... set_robust_list resumed>) = 0 [pid 2975] umount2("./file0", MNT_DETACH) = 0 [pid 2975] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2973] <... futex resumed>) = 0 [pid 2974] <... umount2 resumed>) = 0 [pid 2974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2975] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2974] <... futex resumed>) = 0 [pid 2974] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2973] exit_group(0) = ? [pid 2974] <... futex resumed>) = ? [pid 2974] +++ exited with 0 +++ [pid 2975] <... futex resumed>) = ? [pid 2975] +++ exited with 0 +++ [pid 2973] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2973, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2976 ./strace-static-x86_64: Process 2976 attached [pid 2976] set_robust_list(0x5555564465e0, 24) = 0 [pid 2976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2976] setpgid(0, 0) = 0 [pid 2976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2976] write(3, "1000", 4) = 4 [pid 2976] close(3) = 0 [pid 2976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2976] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2976] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2977 attached [pid 2977] set_robust_list(0x7fc84e09f9e0, 24 [pid 2976] <... clone resumed>, parent_tid=[2977], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2977 [pid 2977] <... set_robust_list resumed>) = 0 [pid 2976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2977] mkdir("./file0", 000 [pid 2976] <... futex resumed>) = 0 [pid 2976] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2977] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2976] <... futex resumed>) = 0 [pid 2977] <... futex resumed>) = 1 [pid 2976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2977] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2976] <... futex resumed>) = 0 [pid 2976] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2977] <... mount resumed>) = 0 [pid 2977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2976] <... futex resumed>) = 0 [pid 2977] <... futex resumed>) = 1 [pid 2976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2977] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2976] <... futex resumed>) = 0 [pid 2976] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2977] <... mount resumed>) = 0 [pid 2977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2976] <... futex resumed>) = 0 [pid 2976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2977] umount2("./file0", MNT_DETACH [pid 2976] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2976] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2977] <... umount2 resumed>) = 0 [pid 2976] <... mprotect resumed>) = 0 [pid 2976] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2978], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2978 [pid 2977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2976] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2976] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2978 attached [pid 2978] set_robust_list(0x7fc84e07e9e0, 24 [pid 2977] <... futex resumed>) = 0 [pid 2978] <... set_robust_list resumed>) = 0 [pid 2977] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2978] umount2("./file0", MNT_DETACH) = 0 [pid 2978] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2976] <... futex resumed>) = 0 [pid 2978] <... futex resumed>) = 1 [pid 2976] exit_group(0 [pid 2978] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 2976] <... exit_group resumed>) = ? [pid 2977] <... futex resumed>) = ? [pid 2977] +++ exited with 0 +++ [pid 2978] +++ exited with 0 +++ [pid 2976] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2976, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2979 ./strace-static-x86_64: Process 2979 attached [pid 2979] set_robust_list(0x5555564465e0, 24) = 0 [pid 2979] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2979] setpgid(0, 0) = 0 [pid 2979] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2979] write(3, "1000", 4) = 4 [pid 2979] close(3) = 0 [pid 2979] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2979] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2979] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2979] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2980 attached , parent_tid=[2980], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2980 [pid 2980] set_robust_list(0x7fc84e09f9e0, 24 [pid 2979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2980] <... set_robust_list resumed>) = 0 [pid 2979] <... futex resumed>) = 0 [pid 2980] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2979] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2979] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2980] <... futex resumed>) = 0 [pid 2979] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2980] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2979] <... futex resumed>) = 0 [pid 2979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2980] <... futex resumed>) = 0 [pid 2979] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2980] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2979] <... futex resumed>) = 0 [pid 2980] <... futex resumed>) = 1 [pid 2979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2980] umount2("./file0", MNT_DETACH [pid 2979] <... futex resumed>) = 0 [pid 2979] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2979] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2979] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2979] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2980] <... umount2 resumed>) = 0 [pid 2980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2979] <... clone resumed>, parent_tid=[2981], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2981 ./strace-static-x86_64: Process 2981 attached [pid 2979] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2981] set_robust_list(0x7fc84e07e9e0, 24 [pid 2979] <... futex resumed>) = 0 [pid 2979] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2981] <... set_robust_list resumed>) = 0 [pid 2981] umount2("./file0", MNT_DETACH) = 0 [pid 2981] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2979] <... futex resumed>) = 0 [pid 2981] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2979] exit_group(0) = ? [pid 2980] <... futex resumed>) = ? [pid 2980] +++ exited with 0 +++ [pid 2981] <... futex resumed>) = ? [pid 2981] +++ exited with 0 +++ [pid 2979] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2979, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2982 attached , child_tidptr=0x5555564465d0) = 2982 [pid 2982] set_robust_list(0x5555564465e0, 24) = 0 [pid 2982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2982] setpgid(0, 0) = 0 [pid 2982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2982] write(3, "1000", 4) = 4 [pid 2982] close(3) = 0 [pid 2982] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2982] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2982] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2983 attached [pid 2983] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2982] <... clone resumed>, parent_tid=[2983], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2983 [pid 2982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2983] <... futex resumed>) = 0 [pid 2983] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2982] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2983] <... futex resumed>) = 0 [pid 2983] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2982] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 2982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2983] <... futex resumed>) = 0 [pid 2983] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2982] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2983] <... mount resumed>) = 0 [pid 2983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2982] <... futex resumed>) = 0 [pid 2982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2982] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2983] umount2("./file0", MNT_DETACH [pid 2982] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 2983] <... umount2 resumed>) = 0 [pid 2982] <... mprotect resumed>) = 0 [pid 2983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2982] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2983] <... futex resumed>) = 0 ./strace-static-x86_64: Process 2984 attached [pid 2984] set_robust_list(0x7fc84e07e9e0, 24 [pid 2983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2982] <... clone resumed>, parent_tid=[2984], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2984 [pid 2982] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2984] <... set_robust_list resumed>) = 0 [pid 2982] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2984] umount2("./file0", MNT_DETACH) = 0 [pid 2984] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2984] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2982] <... futex resumed>) = 0 [pid 2982] exit_group(0 [pid 2983] <... futex resumed>) = 230 [pid 2982] <... exit_group resumed>) = ? [pid 2984] <... futex resumed>) = ? [pid 2984] +++ exited with 0 +++ [pid 2983] +++ exited with 0 +++ [pid 2982] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2982, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2985 attached , child_tidptr=0x5555564465d0) = 2985 [pid 2985] set_robust_list(0x5555564465e0, 24) = 0 [pid 2985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2985] setpgid(0, 0) = 0 [pid 2985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2985] write(3, "1000", 4) = 4 [pid 2985] close(3) = 0 [pid 2985] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2985] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2985] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2986 attached , parent_tid=[2986], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2986 [pid 2986] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2986] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] <... futex resumed>) = 0 [pid 2986] mkdir("./file0", 000 [pid 2985] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2986] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] <... futex resumed>) = 0 [pid 2985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] <... futex resumed>) = 0 [pid 2986] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2985] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2986] <... mount resumed>) = 0 [pid 2986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] <... futex resumed>) = 0 [pid 2985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] <... futex resumed>) = 0 [pid 2986] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2985] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2986] <... mount resumed>) = 0 [pid 2986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] <... futex resumed>) = 0 [pid 2985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2986] <... futex resumed>) = 0 [pid 2986] umount2("./file0", MNT_DETACH [pid 2985] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2986] <... umount2 resumed>) = 0 [pid 2985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 2986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2986] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] <... mmap resumed>) = 0x7fc84e05e000 [pid 2985] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2985] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2987 attached , parent_tid=[2987], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2987 [pid 2987] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2987] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2987] <... futex resumed>) = 0 [pid 2987] umount2("./file0", MNT_DETACH [pid 2985] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2987] <... umount2 resumed>) = 0 [pid 2987] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2985] <... futex resumed>) = 0 [pid 2987] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2985] exit_group(0 [pid 2987] <... futex resumed>) = 231 [pid 2986] <... futex resumed>) = ? [pid 2985] <... exit_group resumed>) = ? [pid 2986] +++ exited with 0 +++ [pid 2987] +++ exited with 0 +++ [pid 2985] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2985, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2988 ./strace-static-x86_64: Process 2988 attached [pid 2988] set_robust_list(0x5555564465e0, 24) = 0 [pid 2988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2988] setpgid(0, 0) = 0 [pid 2988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2988] write(3, "1000", 4) = 4 [pid 2988] close(3) = 0 [pid 2988] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2988] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2988] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2989 attached [pid 2989] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2989] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2988] <... clone resumed>, parent_tid=[2989], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2989 [pid 2988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2989] <... futex resumed>) = 0 [pid 2988] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2989] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2989] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2988] <... futex resumed>) = 0 [pid 2988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2989] <... futex resumed>) = 0 [pid 2989] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2988] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2989] <... mount resumed>) = 0 [pid 2989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2989] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2988] <... futex resumed>) = 0 [pid 2988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2989] <... futex resumed>) = 0 [pid 2988] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2989] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2989] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2988] <... futex resumed>) = 0 [pid 2988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2988] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2988] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2988] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2990], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2990 [pid 2989] <... futex resumed>) = 0 [pid 2988] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2988] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2990 attached [pid 2990] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 2990] umount2("./file0", MNT_DETACH [pid 2989] umount2("./file0", MNT_DETACH [pid 2990] <... umount2 resumed>) = 0 [pid 2990] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2988] <... futex resumed>) = 0 [pid 2990] <... futex resumed>) = 1 [pid 2990] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2989] <... umount2 resumed>) = 0 [pid 2989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2989] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2988] exit_group(0) = ? [pid 2990] <... futex resumed>) = ? [pid 2989] <... futex resumed>) = ? [pid 2990] +++ exited with 0 +++ [pid 2989] +++ exited with 0 +++ [pid 2988] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2988, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2991 ./strace-static-x86_64: Process 2991 attached [pid 2991] set_robust_list(0x5555564465e0, 24) = 0 [pid 2991] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2991] setpgid(0, 0) = 0 [pid 2991] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2991] write(3, "1000", 4) = 4 [pid 2991] close(3) = 0 [pid 2991] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2991] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2991] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2991] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2992], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2992 [pid 2991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2991] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2992 attached [pid 2992] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2992] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2991] <... futex resumed>) = 0 [pid 2991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2991] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2992] <... futex resumed>) = 1 [pid 2992] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 2992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2991] <... futex resumed>) = 0 [pid 2991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2991] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2992] <... futex resumed>) = 1 [pid 2992] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2991] <... futex resumed>) = 0 [pid 2991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2992] umount2("./file0", MNT_DETACH [pid 2991] <... futex resumed>) = 0 [pid 2991] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2991] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2991] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2991] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2993 attached [pid 2992] <... umount2 resumed>) = 0 [pid 2991] <... clone resumed>, parent_tid=[2993], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2993 [pid 2993] set_robust_list(0x7fc84e07e9e0, 24 [pid 2992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2993] <... set_robust_list resumed>) = 0 [pid 2991] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2993] umount2("./file0", MNT_DETACH [pid 2992] <... futex resumed>) = 0 [pid 2992] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2991] <... futex resumed>) = 0 [pid 2991] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2993] <... umount2 resumed>) = 0 [pid 2993] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2991] <... futex resumed>) = 0 [pid 2993] <... futex resumed>) = 1 [pid 2991] exit_group(0 [pid 2993] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2991] <... exit_group resumed>) = ? [pid 2992] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 2993] <... futex resumed>) = ? [pid 2992] +++ exited with 0 +++ [pid 2993] +++ exited with 0 +++ [pid 2991] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2991, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 2994 ./strace-static-x86_64: Process 2994 attached [pid 2994] set_robust_list(0x5555564465e0, 24) = 0 [pid 2994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2994] setpgid(0, 0) = 0 [pid 2994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2994] write(3, "1000", 4) = 4 [pid 2994] close(3) = 0 [pid 2994] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2994] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2994] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2995], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2995 [pid 2994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2994] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 2995 attached [pid 2995] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2995] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 2995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2994] <... futex resumed>) = 0 [pid 2995] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2994] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2995] <... mount resumed>) = 0 [pid 2995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2994] <... futex resumed>) = 0 [pid 2995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2994] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 2995] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 2995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2994] <... futex resumed>) = 0 [pid 2995] umount2("./file0", MNT_DETACH [pid 2994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2994] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2994] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2994] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 2995] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 2996 attached [pid 2995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2994] <... clone resumed>, parent_tid=[2996], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2996 [pid 2996] set_robust_list(0x7fc84e07e9e0, 24 [pid 2995] <... futex resumed>) = 0 [pid 2994] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2996] <... set_robust_list resumed>) = 0 [pid 2995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2994] <... futex resumed>) = 0 [pid 2996] umount2("./file0", MNT_DETACH [pid 2994] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2996] <... umount2 resumed>) = 0 [pid 2996] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 2994] <... futex resumed>) = 0 [pid 2996] <... futex resumed>) = 1 [pid 2994] exit_group(0 [pid 2996] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 2994] <... exit_group resumed>) = ? [pid 2995] <... futex resumed>) = ? [pid 2995] +++ exited with 0 +++ [pid 2996] +++ exited with 0 +++ [pid 2994] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2994, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 2997 attached , child_tidptr=0x5555564465d0) = 2997 [pid 2997] set_robust_list(0x5555564465e0, 24) = 0 [pid 2997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 2997] setpgid(0, 0) = 0 [pid 2997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 2997] write(3, "1000", 4) = 4 [pid 2997] close(3) = 0 [pid 2997] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 2997] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2997] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2998 attached , parent_tid=[2998], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 2998 [pid 2998] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 2997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2998] mkdir("./file0", 000 [pid 2997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2998] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 2998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2997] <... futex resumed>) = 0 [pid 2997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2998] mount(NULL, "./file0", "ramfs", 0, NULL [pid 2997] <... futex resumed>) = 0 [pid 2997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2998] <... mount resumed>) = 0 [pid 2998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2997] <... futex resumed>) = 0 [pid 2998] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 2997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2998] <... mount resumed>) = 0 [pid 2998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2997] <... futex resumed>) = 0 [pid 2998] umount2("./file0", MNT_DETACH [pid 2997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2997] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 2997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 2997] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 2997] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 2999 attached [pid 2998] <... umount2 resumed>) = 0 [pid 2999] set_robust_list(0x7fc84e07e9e0, 24 [pid 2998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 2997] <... clone resumed>, parent_tid=[2999], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 2999 [pid 2999] <... set_robust_list resumed>) = 0 [pid 2998] <... futex resumed>) = 0 [pid 2997] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 2999] umount2("./file0", MNT_DETACH [pid 2998] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2997] <... futex resumed>) = 0 [pid 2997] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 2999] <... umount2 resumed>) = 0 [pid 2999] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 2999] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 2997] <... futex resumed>) = 0 [pid 2997] exit_group(0) = ? [pid 2998] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 2998] +++ exited with 0 +++ [pid 2999] <... futex resumed>) = ? [pid 2999] +++ exited with 0 +++ [pid 2997] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2997, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3000 ./strace-static-x86_64: Process 3000 attached [pid 3000] set_robust_list(0x5555564465e0, 24) = 0 [pid 3000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3000] setpgid(0, 0) = 0 [pid 3000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3000] write(3, "1000", 4) = 4 [pid 3000] close(3) = 0 [pid 3000] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3000] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3000] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3001 attached [pid 3001] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3000] <... clone resumed>, parent_tid=[3001], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3001 [pid 3000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3001] <... futex resumed>) = 0 [pid 3001] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3001] <... futex resumed>) = 0 [pid 3001] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3001] <... mount resumed>) = 0 [pid 3001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3001] <... futex resumed>) = 0 [pid 3001] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3001] <... mount resumed>) = 0 [pid 3001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3000] <... futex resumed>) = 0 [pid 3000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3001] <... futex resumed>) = 0 [pid 3000] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3001] umount2("./file0", MNT_DETACH [pid 3000] <... futex resumed>) = 0 [pid 3000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3001] <... umount2 resumed>) = 0 [pid 3000] <... mmap resumed>) = 0x7fc84e05e000 [pid 3001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3000] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3001] <... futex resumed>) = 0 [pid 3000] <... mprotect resumed>) = 0 [pid 3001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3000] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3002 attached , parent_tid=[3002], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3002 [pid 3002] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3000] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3002] umount2("./file0", MNT_DETACH [pid 3000] <... futex resumed>) = 0 [pid 3000] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3002] <... umount2 resumed>) = 0 [pid 3002] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3000] <... futex resumed>) = 0 [pid 3000] exit_group(0) = ? [pid 3001] <... futex resumed>) = ? [pid 3001] +++ exited with 0 +++ [pid 3002] +++ exited with 0 +++ [pid 3000] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3000, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3003 ./strace-static-x86_64: Process 3003 attached [pid 3003] set_robust_list(0x5555564465e0, 24) = 0 [pid 3003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3003] setpgid(0, 0) = 0 [pid 3003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3003] write(3, "1000", 4) = 4 [pid 3003] close(3) = 0 [pid 3003] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3003] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3003] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3004 attached , parent_tid=[3004], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3004 [pid 3004] set_robust_list(0x7fc84e09f9e0, 24 [pid 3003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3004] <... set_robust_list resumed>) = 0 [pid 3003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3004] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3003] <... futex resumed>) = 0 [pid 3004] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3004] <... mount resumed>) = 0 [pid 3004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3003] <... futex resumed>) = 0 [pid 3004] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3004] <... mount resumed>) = 0 [pid 3004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3003] <... futex resumed>) = 0 [pid 3004] umount2("./file0", MNT_DETACH [pid 3003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3003] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3003] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3004] <... umount2 resumed>) = 0 [pid 3004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3003] <... mprotect resumed>) = 0 [pid 3004] <... futex resumed>) = 0 [pid 3003] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3005 attached [pid 3005] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3005] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3003] <... clone resumed>, parent_tid=[3005], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3005 [pid 3003] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3005] <... futex resumed>) = 0 [pid 3003] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3005] umount2("./file0", MNT_DETACH) = 0 [pid 3005] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3003] <... futex resumed>) = 0 [pid 3005] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3003] exit_group(0) = ? [pid 3005] <... futex resumed>) = ? [pid 3005] +++ exited with 0 +++ [pid 3004] <... futex resumed>) = ? [pid 3004] +++ exited with 0 +++ [pid 3003] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3003, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3006 ./strace-static-x86_64: Process 3006 attached [pid 3006] set_robust_list(0x5555564465e0, 24) = 0 [pid 3006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3006] setpgid(0, 0) = 0 [pid 3006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3006] write(3, "1000", 4) = 4 [pid 3006] close(3) = 0 [pid 3006] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3006] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3006] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3007 attached , parent_tid=[3007], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3007 [pid 3007] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3007] <... futex resumed>) = 0 [pid 3007] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3007] <... futex resumed>) = 0 [pid 3007] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3007] <... mount resumed>) = 0 [pid 3007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3007] <... futex resumed>) = 0 [pid 3006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3007] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3006] <... futex resumed>) = 0 [pid 3006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3007] <... futex resumed>) = 0 [pid 3006] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3007] umount2("./file0", MNT_DETACH [pid 3006] <... futex resumed>) = 0 [pid 3006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3007] <... umount2 resumed>) = 0 [pid 3006] <... mmap resumed>) = 0x7fc84e05e000 [pid 3007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3006] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3007] <... futex resumed>) = 0 [pid 3006] <... mprotect resumed>) = 0 [pid 3007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3006] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3008 attached , parent_tid=[3008], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3008 [pid 3008] set_robust_list(0x7fc84e07e9e0, 24 [pid 3006] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3008] <... set_robust_list resumed>) = 0 [pid 3006] <... futex resumed>) = 0 [pid 3006] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3008] umount2("./file0", MNT_DETACH) = 0 [pid 3008] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3006] <... futex resumed>) = 0 [pid 3008] <... futex resumed>) = 1 [pid 3008] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3006] exit_group(0 [pid 3007] <... futex resumed>) = ? [pid 3006] <... exit_group resumed>) = ? [pid 3008] <... futex resumed>) = ? [pid 3007] +++ exited with 0 +++ [pid 3008] +++ exited with 0 +++ [pid 3006] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3006, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3009 ./strace-static-x86_64: Process 3009 attached [pid 3009] set_robust_list(0x5555564465e0, 24) = 0 [pid 3009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3009] setpgid(0, 0) = 0 [pid 3009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3009] write(3, "1000", 4) = 4 [pid 3009] close(3) = 0 [pid 3009] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3009] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3009] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3009] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3010], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3010 [pid 3009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3010 attached [pid 3010] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3010] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3009] <... futex resumed>) = 0 [pid 3009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3010] <... futex resumed>) = 1 [pid 3010] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3009] <... futex resumed>) = 0 [pid 3009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3010] <... futex resumed>) = 1 [pid 3010] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3009] <... futex resumed>) = 0 [pid 3010] umount2("./file0", MNT_DETACH [pid 3009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3010] <... umount2 resumed>) = 0 [pid 3009] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3009] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3010] <... futex resumed>) = 0 [pid 3009] <... mmap resumed>) = 0x7fc84e05e000 [pid 3010] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3009] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3009] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3011 attached , parent_tid=[3011], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3011 [pid 3011] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3011] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3009] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3011] <... futex resumed>) = 0 [pid 3011] umount2("./file0", MNT_DETACH [pid 3009] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3011] <... umount2 resumed>) = 0 [pid 3011] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3009] <... futex resumed>) = 0 [pid 3009] exit_group(0) = ? [pid 3011] +++ exited with 0 +++ [pid 3010] <... futex resumed>) = ? [pid 3010] +++ exited with 0 +++ [pid 3009] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3009, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3012 attached , child_tidptr=0x5555564465d0) = 3012 [pid 3012] set_robust_list(0x5555564465e0, 24) = 0 [pid 3012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3012] setpgid(0, 0) = 0 [pid 3012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3012] write(3, "1000", 4) = 4 [pid 3012] close(3) = 0 [pid 3012] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3012] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3012] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3013 attached [pid 3013] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3012] <... clone resumed>, parent_tid=[3013], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3013 [pid 3012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3013] <... futex resumed>) = 0 [pid 3013] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3013] <... futex resumed>) = 0 [pid 3013] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3013] <... mount resumed>) = 0 [pid 3013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3013] <... futex resumed>) = 0 [pid 3013] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3012] <... futex resumed>) = 1 [pid 3013] <... mount resumed>) = 0 [pid 3013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3013] <... futex resumed>) = 0 [pid 3013] umount2("./file0", MNT_DETACH) = 0 [pid 3013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3013] <... futex resumed>) = 0 [pid 3013] umount2("./file0", MNT_DETACH [pid 3012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3013] <... umount2 resumed>) = 0 [pid 3013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3012] exit_group(0) = ? [pid 3013] <... futex resumed>) = ? [pid 3013] +++ exited with 0 +++ [pid 3012] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3012, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3014 ./strace-static-x86_64: Process 3014 attached [pid 3014] set_robust_list(0x5555564465e0, 24) = 0 [pid 3014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3014] setpgid(0, 0) = 0 [pid 3014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3014] write(3, "1000", 4) = 4 [pid 3014] close(3) = 0 [pid 3014] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3014] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3014] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3015 attached [pid 3015] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3015] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] <... clone resumed>, parent_tid=[3015], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3015 [pid 3014] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3015] <... futex resumed>) = 0 [pid 3015] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3015] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3015] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3014] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3015] <... futex resumed>) = 0 [pid 3014] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3015] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3015] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3015] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] <... futex resumed>) = 0 [pid 3014] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3015] <... futex resumed>) = 0 [pid 3014] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3015] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3015] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3015] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] <... futex resumed>) = 0 [pid 3014] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3015] <... futex resumed>) = 0 [pid 3015] umount2("./file0", MNT_DETACH [pid 3014] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3015] <... umount2 resumed>) = 0 [pid 3014] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3015] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3015] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] <... mprotect resumed>) = 0 [pid 3014] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3016 attached , parent_tid=[3016], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3016 [pid 3016] set_robust_list(0x7fc84e07e9e0, 24 [pid 3014] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3016] <... set_robust_list resumed>) = 0 [pid 3016] umount2("./file0", MNT_DETACH) = 0 [pid 3016] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3016] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] <... futex resumed>) = 1 [pid 3016] <... futex resumed>) = 0 [pid 3014] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3016] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3014] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3014] exit_group(0 [pid 3015] <... futex resumed>) = ? [pid 3014] <... exit_group resumed>) = ? [pid 3015] +++ exited with 0 +++ [pid 3016] <... futex resumed>) = ? [pid 3016] +++ exited with 0 +++ [pid 3014] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3014, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3017 attached , child_tidptr=0x5555564465d0) = 3017 [pid 3017] set_robust_list(0x5555564465e0, 24) = 0 [pid 3017] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3017] setpgid(0, 0) = 0 [pid 3017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3017] write(3, "1000", 4) = 4 [pid 3017] close(3) = 0 [pid 3017] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3017] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3017] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3017] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3018 attached [pid 3018] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3018] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3017] <... clone resumed>, parent_tid=[3018], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3018 [pid 3017] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3018] <... futex resumed>) = 0 [pid 3018] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3017] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3018] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3017] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3017] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3018] <... futex resumed>) = 0 [pid 3017] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3018] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3017] <... futex resumed>) = 0 [pid 3017] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3017] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3018] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3017] <... futex resumed>) = 0 [pid 3018] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3017] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3017] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3017] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3018] umount2("./file0", MNT_DETACH [pid 3017] <... mmap resumed>) = 0x7fc84e05e000 [pid 3017] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3017] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3018] <... umount2 resumed>) = 0 [pid 3017] <... clone resumed>, parent_tid=[3019], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3019 [pid 3017] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3017] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3019 attached ) = 0 [pid 3018] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3019] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3019] umount2("./file0", MNT_DETACH) = 0 [pid 3019] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3017] <... futex resumed>) = 0 [pid 3017] exit_group(0) = ? [pid 3019] +++ exited with 0 +++ [pid 3018] <... futex resumed>) = ? [pid 3018] +++ exited with 0 +++ [pid 3017] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3017, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3020 attached , child_tidptr=0x5555564465d0) = 3020 [pid 3020] set_robust_list(0x5555564465e0, 24) = 0 [pid 3020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3020] setpgid(0, 0) = 0 [pid 3020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3020] write(3, "1000", 4) = 4 [pid 3020] close(3) = 0 [pid 3020] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3020] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3020] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3021 attached [pid 3021] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3021] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3020] <... clone resumed>, parent_tid=[3021], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3021 [pid 3020] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3021] <... futex resumed>) = 0 [pid 3021] mkdir("./file0", 000 [pid 3020] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3021] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3021] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3020] <... futex resumed>) = 0 [pid 3020] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3021] <... futex resumed>) = 0 [pid 3021] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3020] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3021] <... mount resumed>) = 0 [pid 3021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3020] <... futex resumed>) = 0 [pid 3020] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3020] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3021] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3020] <... futex resumed>) = 0 [pid 3020] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3020] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3021] umount2("./file0", MNT_DETACH [pid 3020] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3020] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3022], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3022 [pid 3020] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3020] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3022 attached [pid 3022] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3022] umount2("./file0", MNT_DETACH [pid 3021] <... umount2 resumed>) = 0 [pid 3022] <... umount2 resumed>) = 0 [pid 3022] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3022] <... futex resumed>) = 1 [pid 3021] <... futex resumed>) = 0 [pid 3020] <... futex resumed>) = 0 [pid 3020] exit_group(0) = ? [pid 3022] +++ exited with 0 +++ [pid 3021] +++ exited with 0 +++ [pid 3020] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3020, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3023 ./strace-static-x86_64: Process 3023 attached [pid 3023] set_robust_list(0x5555564465e0, 24) = 0 [pid 3023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3023] setpgid(0, 0) = 0 [pid 3023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3023] write(3, "1000", 4) = 4 [pid 3023] close(3) = 0 [pid 3023] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3023] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3023] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3023] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3024 attached , parent_tid=[3024], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3024 [pid 3024] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3024] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3024] <... futex resumed>) = 0 [pid 3024] mkdir("./file0", 000 [pid 3023] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3024] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3024] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3024] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3023] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3024] <... futex resumed>) = 0 [pid 3024] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3023] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3024] <... mount resumed>) = 0 [pid 3024] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3024] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] <... futex resumed>) = 0 [pid 3023] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3024] <... futex resumed>) = 0 [pid 3024] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3023] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3024] <... mount resumed>) = 0 [pid 3024] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3024] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3023] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3024] <... futex resumed>) = 0 [pid 3024] umount2("./file0", MNT_DETACH [pid 3023] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3024] <... umount2 resumed>) = 0 [pid 3024] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3024] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] <... futex resumed>) = 0 [pid 3023] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3023] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3023] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3025 attached , parent_tid=[3025], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3025 [pid 3025] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3025] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3025] <... futex resumed>) = 0 [pid 3025] umount2("./file0", MNT_DETACH) = 0 [pid 3023] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3025] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3025] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3023] exit_group(0 [pid 3024] <... futex resumed>) = ? [pid 3023] <... exit_group resumed>) = ? [pid 3024] +++ exited with 0 +++ [pid 3025] <... futex resumed>) = ? [pid 3025] +++ exited with 0 +++ [pid 3023] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3023, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3026 ./strace-static-x86_64: Process 3026 attached [pid 3026] set_robust_list(0x5555564465e0, 24) = 0 [pid 3026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3026] setpgid(0, 0) = 0 [pid 3026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3026] write(3, "1000", 4) = 4 [pid 3026] close(3) = 0 [pid 3026] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3026] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3026] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3027 attached , parent_tid=[3027], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3027 [pid 3027] set_robust_list(0x7fc84e09f9e0, 24 [pid 3026] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3027] <... set_robust_list resumed>) = 0 [pid 3026] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3027] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3027] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3026] <... futex resumed>) = 0 [pid 3027] <... futex resumed>) = 1 [pid 3026] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3027] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3026] <... futex resumed>) = 0 [pid 3026] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3027] <... mount resumed>) = 0 [pid 3027] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3026] <... futex resumed>) = 0 [pid 3027] <... futex resumed>) = 1 [pid 3026] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3027] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3026] <... futex resumed>) = 0 [pid 3026] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3027] <... mount resumed>) = 0 [pid 3027] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3026] <... futex resumed>) = 0 [pid 3026] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3026] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3026] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3027] umount2("./file0", MNT_DETACH [pid 3026] <... mprotect resumed>) = 0 [pid 3026] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3027] <... umount2 resumed>) = 0 [pid 3026] <... clone resumed>, parent_tid=[3028], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3028 [pid 3026] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3026] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3028 attached [pid 3028] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3028] umount2("./file0", MNT_DETACH [pid 3027] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3028] <... umount2 resumed>) = 0 [pid 3027] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3028] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3026] <... futex resumed>) = 0 [pid 3026] exit_group(0) = ? [pid 3027] <... futex resumed>) = ? [pid 3028] <... futex resumed>) = ? [pid 3027] +++ exited with 0 +++ [pid 3028] +++ exited with 0 +++ [pid 3026] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3026, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3029 ./strace-static-x86_64: Process 3029 attached [pid 3029] set_robust_list(0x5555564465e0, 24) = 0 [pid 3029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3029] setpgid(0, 0) = 0 [pid 3029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3029] write(3, "1000", 4) = 4 [pid 3029] close(3) = 0 [pid 3029] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3029] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3029] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3029] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3030 attached [pid 3030] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3030] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3029] <... clone resumed>, parent_tid=[3030], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3030 [pid 3029] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3030] <... futex resumed>) = 0 [pid 3030] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3030] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3030] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3029] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3029] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3030] <... futex resumed>) = 0 [pid 3030] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3029] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3030] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3030] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3029] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3030] <... futex resumed>) = 0 [pid 3029] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3030] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3030] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3029] <... futex resumed>) = 0 [pid 3030] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3029] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3029] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3029] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3030] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3030] umount2("./file0", MNT_DETACH [pid 3029] <... mmap resumed>) = 0x7fc84e05e000 [pid 3029] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3030] <... umount2 resumed>) = 0 [pid 3029] <... mprotect resumed>) = 0 [pid 3030] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3029] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3030] <... futex resumed>) = 0 [pid 3030] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3029] <... clone resumed>, parent_tid=[3031], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3031 [pid 3029] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3031 attached [pid 3029] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3031] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3031] umount2("./file0", MNT_DETACH) = 0 [pid 3031] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3029] <... futex resumed>) = 0 [pid 3031] <... futex resumed>) = 1 [pid 3031] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3029] exit_group(0 [pid 3031] <... futex resumed>) = 231 [pid 3029] <... exit_group resumed>) = ? [pid 3031] +++ exited with 0 +++ [pid 3030] <... futex resumed>) = ? [pid 3030] +++ exited with 0 +++ [pid 3029] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3029, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3032 ./strace-static-x86_64: Process 3032 attached [pid 3032] set_robust_list(0x5555564465e0, 24) = 0 [pid 3032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3032] setpgid(0, 0) = 0 [pid 3032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3032] write(3, "1000", 4) = 4 [pid 3032] close(3) = 0 [pid 3032] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3032] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3032] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3033 attached [pid 3033] set_robust_list(0x7fc84e09f9e0, 24 [pid 3032] <... clone resumed>, parent_tid=[3033], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3033 [pid 3033] <... set_robust_list resumed>) = 0 [pid 3032] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3032] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3033] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3033] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3032] <... futex resumed>) = 0 [pid 3032] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3033] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3032] <... futex resumed>) = 0 [pid 3032] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3033] <... mount resumed>) = 0 [pid 3033] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3032] <... futex resumed>) = 0 [pid 3032] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3033] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3032] <... futex resumed>) = 0 [pid 3032] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3033] <... mount resumed>) = 0 [pid 3033] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3032] <... futex resumed>) = 0 [pid 3032] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3032] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3032] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3032] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3033] umount2("./file0", MNT_DETACH [pid 3032] <... clone resumed>, parent_tid=[3034], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3034 [pid 3032] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3032] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3034 attached [pid 3034] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3034] umount2("./file0", MNT_DETACH) = 0 [pid 3034] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3032] <... futex resumed>) = 0 [pid 3034] <... futex resumed>) = 1 [pid 3034] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3033] <... umount2 resumed>) = 0 [pid 3033] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3033] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3032] exit_group(0) = ? [pid 3033] <... futex resumed>) = ? [pid 3034] <... futex resumed>) = ? [pid 3034] +++ exited with 0 +++ [pid 3033] +++ exited with 0 +++ [pid 3032] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3032, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3035 ./strace-static-x86_64: Process 3035 attached [pid 3035] set_robust_list(0x5555564465e0, 24) = 0 [pid 3035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3035] setpgid(0, 0) = 0 [pid 3035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3035] write(3, "1000", 4) = 4 [pid 3035] close(3) = 0 [pid 3035] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3035] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3035] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3035] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3036 attached , parent_tid=[3036], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3036 [pid 3036] set_robust_list(0x7fc84e09f9e0, 24 [pid 3035] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3036] <... set_robust_list resumed>) = 0 [pid 3035] <... futex resumed>) = 0 [pid 3035] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3036] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3036] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3035] <... futex resumed>) = 0 [pid 3036] <... futex resumed>) = 1 [pid 3036] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3035] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3035] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3036] <... mount resumed>) = 0 [pid 3036] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3035] <... futex resumed>) = 0 [pid 3036] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3035] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3036] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3035] <... futex resumed>) = 0 [pid 3036] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3035] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3036] <... mount resumed>) = 0 [pid 3036] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3035] <... futex resumed>) = 0 [pid 3036] <... futex resumed>) = 1 [pid 3035] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3035] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3035] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3036] umount2("./file0", MNT_DETACH [pid 3035] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3035] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3037 attached [pid 3037] set_robust_list(0x7fc84e07e9e0, 24 [pid 3035] <... clone resumed>, parent_tid=[3037], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3037 [pid 3037] <... set_robust_list resumed>) = 0 [pid 3035] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3037] umount2("./file0", MNT_DETACH [pid 3035] <... futex resumed>) = 0 [pid 3035] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3036] <... umount2 resumed>) = 0 [pid 3037] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 3037] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3036] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3037] <... futex resumed>) = 1 [pid 3036] <... futex resumed>) = 0 [pid 3035] <... futex resumed>) = 0 [pid 3035] exit_group(0) = ? [pid 3036] +++ exited with 0 +++ [pid 3037] +++ exited with 0 +++ [pid 3035] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3035, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3038 ./strace-static-x86_64: Process 3038 attached [pid 3038] set_robust_list(0x5555564465e0, 24) = 0 [pid 3038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3038] setpgid(0, 0) = 0 [pid 3038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3038] write(3, "1000", 4) = 4 [pid 3038] close(3) = 0 [pid 3038] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3038] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3038] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3038] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3039 attached , parent_tid=[3039], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3039 [pid 3039] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3039] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3039] <... futex resumed>) = 0 [pid 3038] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3039] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3039] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3039] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] <... futex resumed>) = 0 [pid 3038] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3039] <... futex resumed>) = 0 [pid 3039] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3038] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3039] <... mount resumed>) = 0 [pid 3039] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3039] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3038] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3039] <... futex resumed>) = 0 [pid 3039] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3038] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3039] <... mount resumed>) = 0 [pid 3039] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3039] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] <... futex resumed>) = 0 [pid 3038] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3039] <... futex resumed>) = 0 [pid 3039] umount2("./file0", MNT_DETACH [pid 3038] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3039] <... umount2 resumed>) = 0 [pid 3039] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3039] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3038] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3038] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3040 attached , parent_tid=[3040], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3040 [pid 3040] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3040] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3040] <... futex resumed>) = 0 [pid 3040] umount2("./file0", MNT_DETACH [pid 3038] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3040] <... umount2 resumed>) = 0 [pid 3040] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3040] <... futex resumed>) = 0 [pid 3040] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3038] exit_group(0 [pid 3039] <... futex resumed>) = ? [pid 3038] <... exit_group resumed>) = ? [pid 3039] +++ exited with 0 +++ [pid 3040] <... futex resumed>) = ? [pid 3040] +++ exited with 0 +++ [pid 3038] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3038, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3041 ./strace-static-x86_64: Process 3041 attached [pid 3041] set_robust_list(0x5555564465e0, 24) = 0 [pid 3041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3041] setpgid(0, 0) = 0 [pid 3041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3041] write(3, "1000", 4) = 4 [pid 3041] close(3) = 0 [pid 3041] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3041] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3041] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3041] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3042], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3042 ./strace-static-x86_64: Process 3042 attached [pid 3042] set_robust_list(0x7fc84e09f9e0, 24 [pid 3041] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3042] <... set_robust_list resumed>) = 0 [pid 3041] <... futex resumed>) = 0 [pid 3041] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3042] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3042] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3042] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3041] <... futex resumed>) = 0 [pid 3041] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3042] <... futex resumed>) = 0 [pid 3042] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3041] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3042] <... mount resumed>) = 0 [pid 3042] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3041] <... futex resumed>) = 0 [pid 3041] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3041] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3042] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3042] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3041] <... futex resumed>) = 0 [pid 3041] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3041] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3041] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3041] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3041] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3042] umount2("./file0", MNT_DETACH [pid 3041] <... clone resumed>, parent_tid=[3043], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3043 [pid 3041] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3041] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3042] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3043 attached [pid 3043] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3043] umount2("./file0", MNT_DETACH [pid 3042] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3042] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3043] <... umount2 resumed>) = 0 [pid 3043] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3041] <... futex resumed>) = 0 [pid 3041] exit_group(0) = ? [pid 3042] <... futex resumed>) = 231 [pid 3043] <... futex resumed>) = ? [pid 3042] +++ exited with 0 +++ [pid 3043] +++ exited with 0 +++ [pid 3041] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3041, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3044 ./strace-static-x86_64: Process 3044 attached [pid 3044] set_robust_list(0x5555564465e0, 24) = 0 [pid 3044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3044] setpgid(0, 0) = 0 [pid 3044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3044] write(3, "1000", 4) = 4 [pid 3044] close(3) = 0 [pid 3044] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3044] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3044] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3045], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3045 [pid 3044] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3044] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3045 attached [pid 3045] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3045] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3045] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3044] <... futex resumed>) = 0 [pid 3044] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3044] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3045] <... futex resumed>) = 1 [pid 3045] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3045] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3044] <... futex resumed>) = 0 [pid 3044] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3044] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3045] <... futex resumed>) = 1 [pid 3045] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3045] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3044] <... futex resumed>) = 0 [pid 3045] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3044] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3044] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3044] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3044] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3045] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 3046 attached [pid 3045] umount2("./file0", MNT_DETACH [pid 3044] <... clone resumed>, parent_tid=[3046], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3046 [pid 3044] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3046] set_robust_list(0x7fc84e07e9e0, 24 [pid 3045] <... umount2 resumed>) = 0 [pid 3044] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3046] <... set_robust_list resumed>) = 0 [pid 3045] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3046] umount2("./file0", MNT_DETACH [pid 3045] <... futex resumed>) = 0 [pid 3045] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3046] <... umount2 resumed>) = 0 [pid 3046] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3044] <... futex resumed>) = 0 [pid 3044] exit_group(0) = ? [pid 3045] <... futex resumed>) = ? [pid 3045] +++ exited with 0 +++ [pid 3046] +++ exited with 0 +++ [pid 3044] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3044, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3047 ./strace-static-x86_64: Process 3047 attached [pid 3047] set_robust_list(0x5555564465e0, 24) = 0 [pid 3047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3047] setpgid(0, 0) = 0 [pid 3047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3047] write(3, "1000", 4) = 4 [pid 3047] close(3) = 0 [pid 3047] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3047] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3047] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3047] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3048 attached , parent_tid=[3048], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3048 [pid 3048] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3048] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3048] <... futex resumed>) = 0 [pid 3047] <... futex resumed>) = 1 [pid 3048] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3048] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3048] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3047] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3048] <... futex resumed>) = 0 [pid 3048] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3047] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3048] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3048] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3047] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3048] <... futex resumed>) = 0 [pid 3048] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3047] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3048] <... mount resumed>) = 0 [pid 3048] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3048] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3047] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3048] <... futex resumed>) = 0 [pid 3048] umount2("./file0", MNT_DETACH) = 0 [pid 3047] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3048] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3047] <... futex resumed>) = 0 [pid 3048] <... futex resumed>) = 0 [pid 3047] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3048] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] <... mmap resumed>) = 0x7fc84e05e000 [pid 3047] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3047] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3049 attached , parent_tid=[3049], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3049 [pid 3049] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3049] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3049] <... futex resumed>) = 0 [pid 3047] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3049] umount2("./file0", MNT_DETACH) = 0 [pid 3049] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3049] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3047] <... futex resumed>) = 0 [pid 3047] exit_group(0 [pid 3048] <... futex resumed>) = ? [pid 3047] <... exit_group resumed>) = ? [pid 3049] <... futex resumed>) = ? [pid 3048] +++ exited with 0 +++ [pid 3049] +++ exited with 0 +++ [pid 3047] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3047, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3050 ./strace-static-x86_64: Process 3050 attached [pid 3050] set_robust_list(0x5555564465e0, 24) = 0 [pid 3050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3050] setpgid(0, 0) = 0 [pid 3050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3050] write(3, "1000", 4) = 4 [pid 3050] close(3) = 0 [pid 3050] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3050] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3050] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3051 attached , parent_tid=[3051], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3051 [pid 3051] set_robust_list(0x7fc84e09f9e0, 24 [pid 3050] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3051] <... set_robust_list resumed>) = 0 [pid 3050] <... futex resumed>) = 0 [pid 3050] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3051] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3051] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3050] <... futex resumed>) = 0 [pid 3051] <... futex resumed>) = 1 [pid 3050] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3051] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3050] <... futex resumed>) = 0 [pid 3050] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3051] <... mount resumed>) = 0 [pid 3051] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3050] <... futex resumed>) = 0 [pid 3051] <... futex resumed>) = 1 [pid 3050] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3051] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3050] <... futex resumed>) = 0 [pid 3050] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3051] <... mount resumed>) = 0 [pid 3051] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3050] <... futex resumed>) = 0 [pid 3051] <... futex resumed>) = 1 [pid 3050] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3051] umount2("./file0", MNT_DETACH [pid 3050] <... futex resumed>) = 0 [pid 3050] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3050] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3051] <... umount2 resumed>) = 0 [pid 3050] <... mprotect resumed>) = 0 [pid 3051] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3050] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3051] <... futex resumed>) = 0 [pid 3051] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3050] <... clone resumed>, parent_tid=[3052], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3052 ./strace-static-x86_64: Process 3052 attached [pid 3050] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3052] set_robust_list(0x7fc84e07e9e0, 24 [pid 3050] <... futex resumed>) = 0 [pid 3052] <... set_robust_list resumed>) = 0 [pid 3050] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3052] umount2("./file0", MNT_DETACH) = 0 [pid 3052] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3050] <... futex resumed>) = 0 [pid 3050] exit_group(0 [pid 3052] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3050] <... exit_group resumed>) = ? [pid 3051] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3052] <... futex resumed>) = ? [pid 3051] +++ exited with 0 +++ [pid 3052] +++ exited with 0 +++ [pid 3050] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3050, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3053 ./strace-static-x86_64: Process 3053 attached [pid 3053] set_robust_list(0x5555564465e0, 24) = 0 [pid 3053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3053] setpgid(0, 0) = 0 [pid 3053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3053] write(3, "1000", 4) = 4 [pid 3053] close(3) = 0 [pid 3053] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3053] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3053] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3053] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3054 attached , parent_tid=[3054], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3054 [pid 3054] set_robust_list(0x7fc84e09f9e0, 24 [pid 3053] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3054] <... set_robust_list resumed>) = 0 [pid 3053] <... futex resumed>) = 0 [pid 3053] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3054] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3054] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3053] <... futex resumed>) = 0 [pid 3054] <... futex resumed>) = 1 [pid 3053] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3054] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3053] <... futex resumed>) = 0 [pid 3053] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3054] <... mount resumed>) = 0 [pid 3054] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3053] <... futex resumed>) = 0 [pid 3054] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3053] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3054] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3053] <... futex resumed>) = 0 [pid 3054] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3053] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3054] <... mount resumed>) = 0 [pid 3054] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3053] <... futex resumed>) = 0 [pid 3054] umount2("./file0", MNT_DETACH [pid 3053] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3053] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3053] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3053] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3054] <... umount2 resumed>) = 0 [pid 3054] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3053] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3055 attached [pid 3054] <... futex resumed>) = 0 [pid 3055] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3053] <... clone resumed>, parent_tid=[3055], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3055 [pid 3054] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3053] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3055] umount2("./file0", MNT_DETACH [pid 3053] <... futex resumed>) = 0 [pid 3053] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3055] <... umount2 resumed>) = 0 [pid 3055] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3053] <... futex resumed>) = 0 [pid 3055] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3053] exit_group(0) = ? [pid 3054] <... futex resumed>) = ? [pid 3054] +++ exited with 0 +++ [pid 3055] <... futex resumed>) = ? [pid 3055] +++ exited with 0 +++ [pid 3053] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3053, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3056 ./strace-static-x86_64: Process 3056 attached [pid 3056] set_robust_list(0x5555564465e0, 24) = 0 [pid 3056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3056] setpgid(0, 0) = 0 [pid 3056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3056] write(3, "1000", 4) = 4 [pid 3056] close(3) = 0 [pid 3056] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3056] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3056] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3057 attached [pid 3057] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3057] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3056] <... clone resumed>, parent_tid=[3057], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3057 [pid 3056] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3057] <... futex resumed>) = 0 [pid 3056] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3057] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3057] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3057] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3056] <... futex resumed>) = 0 [pid 3056] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3057] <... futex resumed>) = 0 [pid 3056] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3057] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3057] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3056] <... futex resumed>) = 0 [pid 3057] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3056] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3056] <... futex resumed>) = 0 [pid 3057] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3056] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3057] <... mount resumed>) = 0 [pid 3057] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3056] <... futex resumed>) = 0 [pid 3057] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3056] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3056] <... futex resumed>) = 0 [pid 3057] umount2("./file0", MNT_DETACH [pid 3056] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3057] <... umount2 resumed>) = 0 [pid 3056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3057] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3056] <... mmap resumed>) = 0x7fc84e05e000 [pid 3057] <... futex resumed>) = 0 [pid 3056] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3057] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3056] <... mprotect resumed>) = 0 [pid 3056] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3058 attached [pid 3058] set_robust_list(0x7fc84e07e9e0, 24 [pid 3056] <... clone resumed>, parent_tid=[3058], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3058 [pid 3058] <... set_robust_list resumed>) = 0 [pid 3056] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3058] umount2("./file0", MNT_DETACH [pid 3056] <... futex resumed>) = 0 [pid 3056] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3058] <... umount2 resumed>) = 0 [pid 3058] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3056] <... futex resumed>) = 0 [pid 3058] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3056] exit_group(0) = ? [pid 3058] <... futex resumed>) = ? [pid 3057] <... futex resumed>) = ? [pid 3057] +++ exited with 0 +++ [pid 3058] +++ exited with 0 +++ [pid 3056] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3056, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3059 ./strace-static-x86_64: Process 3059 attached [pid 3059] set_robust_list(0x5555564465e0, 24) = 0 [pid 3059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3059] setpgid(0, 0) = 0 [pid 3059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3059] write(3, "1000", 4) = 4 [pid 3059] close(3) = 0 [pid 3059] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3059] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3059] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3059] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3060 attached , parent_tid=[3060], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3060 [pid 3060] set_robust_list(0x7fc84e09f9e0, 24 [pid 3059] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3060] <... set_robust_list resumed>) = 0 [pid 3059] <... futex resumed>) = 0 [pid 3059] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3060] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3060] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3059] <... futex resumed>) = 0 [pid 3060] <... futex resumed>) = 1 [pid 3059] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3060] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3059] <... futex resumed>) = 0 [pid 3059] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3060] <... mount resumed>) = 0 [pid 3060] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3059] <... futex resumed>) = 0 [pid 3060] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3059] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3059] <... futex resumed>) = 0 [pid 3060] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3059] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3060] <... mount resumed>) = 0 [pid 3060] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3059] <... futex resumed>) = 0 [pid 3060] <... futex resumed>) = 1 [pid 3059] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3060] umount2("./file0", MNT_DETACH [pid 3059] <... futex resumed>) = 0 [pid 3059] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3059] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3059] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3060] <... umount2 resumed>) = 0 [pid 3059] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3060] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3061 attached [pid 3060] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3059] <... clone resumed>, parent_tid=[3061], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3061 [pid 3061] set_robust_list(0x7fc84e07e9e0, 24 [pid 3059] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3061] <... set_robust_list resumed>) = 0 [pid 3059] <... futex resumed>) = 0 [pid 3059] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3061] umount2("./file0", MNT_DETACH) = 0 [pid 3061] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3059] <... futex resumed>) = 0 [pid 3059] exit_group(0) = ? [pid 3060] <... futex resumed>) = ? [pid 3060] +++ exited with 0 +++ [pid 3061] +++ exited with 0 +++ [pid 3059] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3059, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3062 attached , child_tidptr=0x5555564465d0) = 3062 [pid 3062] set_robust_list(0x5555564465e0, 24) = 0 [pid 3062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3062] setpgid(0, 0) = 0 [pid 3062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3062] write(3, "1000", 4) = 4 [pid 3062] close(3) = 0 [pid 3062] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3062] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3062] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3063 attached , parent_tid=[3063], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3063 [pid 3063] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3063] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3063] <... futex resumed>) = 0 [pid 3062] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3063] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3063] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3063] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3062] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3063] <... futex resumed>) = 0 [pid 3063] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3062] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3063] <... mount resumed>) = 0 [pid 3063] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3063] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3062] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3063] <... futex resumed>) = 0 [pid 3063] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3062] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3063] <... mount resumed>) = 0 [pid 3063] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3063] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] <... futex resumed>) = 0 [pid 3062] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3063] <... futex resumed>) = 0 [pid 3063] umount2("./file0", MNT_DETACH [pid 3062] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3063] <... umount2 resumed>) = 0 [pid 3063] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3063] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] <... futex resumed>) = 0 [pid 3062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3062] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3062] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3064 attached , parent_tid=[3064], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3064 [pid 3064] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3064] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3064] <... futex resumed>) = 0 [pid 3064] umount2("./file0", MNT_DETACH) = 0 [pid 3064] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3064] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3062] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3062] exit_group(0 [pid 3063] <... futex resumed>) = ? [pid 3062] <... exit_group resumed>) = ? [pid 3063] +++ exited with 0 +++ [pid 3064] <... futex resumed>) = ? [pid 3064] +++ exited with 0 +++ [pid 3062] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3062, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3065 ./strace-static-x86_64: Process 3065 attached [pid 3065] set_robust_list(0x5555564465e0, 24) = 0 [pid 3065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3065] setpgid(0, 0) = 0 [pid 3065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3065] write(3, "1000", 4) = 4 [pid 3065] close(3) = 0 [pid 3065] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3065] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3065] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3066 attached [pid 3066] set_robust_list(0x7fc84e09f9e0, 24 [pid 3065] <... clone resumed>, parent_tid=[3066], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3066 [pid 3066] <... set_robust_list resumed>) = 0 [pid 3066] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3066] <... futex resumed>) = 0 [pid 3065] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3066] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3066] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3066] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] <... futex resumed>) = 0 [pid 3065] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3066] <... futex resumed>) = 0 [pid 3066] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3065] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3066] <... mount resumed>) = 0 [pid 3066] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3066] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] <... futex resumed>) = 0 [pid 3065] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3066] <... futex resumed>) = 0 [pid 3066] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3065] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3066] <... mount resumed>) = 0 [pid 3066] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3065] <... futex resumed>) = 0 [pid 3066] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3065] <... futex resumed>) = 0 [pid 3066] umount2("./file0", MNT_DETACH [pid 3065] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3066] <... umount2 resumed>) = 0 [pid 3065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3066] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3065] <... mmap resumed>) = 0x7fc84e05e000 [pid 3066] <... futex resumed>) = 0 [pid 3065] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3066] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3067 attached , parent_tid=[3067], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3067 [pid 3067] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3067] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3067] <... futex resumed>) = 0 [pid 3067] umount2("./file0", MNT_DETACH [pid 3065] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3067] <... umount2 resumed>) = 0 [pid 3067] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3065] <... futex resumed>) = 0 [pid 3067] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3065] exit_group(0) = ? [pid 3066] <... futex resumed>) = ? [pid 3066] +++ exited with 0 +++ [pid 3067] <... futex resumed>) = ? [pid 3067] +++ exited with 0 +++ [pid 3065] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3065, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3068 ./strace-static-x86_64: Process 3068 attached [pid 3068] set_robust_list(0x5555564465e0, 24) = 0 [pid 3068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3068] setpgid(0, 0) = 0 [pid 3068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3068] write(3, "1000", 4) = 4 [pid 3068] close(3) = 0 [pid 3068] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3068] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3068] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3069 attached , parent_tid=[3069], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3069 [pid 3069] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3069] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3069] <... futex resumed>) = 0 [pid 3069] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3069] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3069] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3068] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3069] <... futex resumed>) = 0 [pid 3069] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3068] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3069] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3069] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3068] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3069] <... futex resumed>) = 0 [pid 3069] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3068] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3069] <... mount resumed>) = 0 [pid 3069] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3069] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] <... futex resumed>) = 0 [pid 3068] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3069] <... futex resumed>) = 0 [pid 3069] umount2("./file0", MNT_DETACH [pid 3068] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3069] <... umount2 resumed>) = 0 [pid 3069] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3069] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3068] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3068] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3070 attached , parent_tid=[3070], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3070 [pid 3070] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3070] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3070] <... futex resumed>) = 0 [pid 3070] umount2("./file0", MNT_DETACH [pid 3068] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3070] <... umount2 resumed>) = 0 [pid 3070] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3070] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3068] exit_group(0 [pid 3069] <... futex resumed>) = ? [pid 3068] <... exit_group resumed>) = ? [pid 3069] +++ exited with 0 +++ [pid 3070] <... futex resumed>) = ? [pid 3070] +++ exited with 0 +++ [pid 3068] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3068, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3071 ./strace-static-x86_64: Process 3071 attached [pid 3071] set_robust_list(0x5555564465e0, 24) = 0 [pid 3071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3071] setpgid(0, 0) = 0 [pid 3071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3071] write(3, "1000", 4) = 4 [pid 3071] close(3) = 0 [pid 3071] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3071] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3071] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3071] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3072 attached , parent_tid=[3072], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3072 [pid 3072] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3072] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3071] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3072] <... futex resumed>) = 0 [pid 3072] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3072] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3072] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3071] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3071] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3072] <... futex resumed>) = 0 [pid 3072] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3071] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3072] <... mount resumed>) = 0 [pid 3072] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3072] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3071] <... futex resumed>) = 0 [pid 3071] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3072] <... futex resumed>) = 0 [pid 3072] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3071] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3072] <... mount resumed>) = 0 [pid 3072] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3072] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3071] <... futex resumed>) = 0 [pid 3071] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3072] <... futex resumed>) = 0 [pid 3071] <... futex resumed>) = 1 [pid 3072] umount2("./file0", MNT_DETACH [pid 3071] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3072] <... umount2 resumed>) = 0 [pid 3071] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3072] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3071] <... mmap resumed>) = 0x7fc84e05e000 [pid 3072] <... futex resumed>) = 0 [pid 3071] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3072] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3071] <... mprotect resumed>) = 0 [pid 3071] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3073 attached , parent_tid=[3073], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3073 [pid 3073] set_robust_list(0x7fc84e07e9e0, 24 [pid 3071] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3073] <... set_robust_list resumed>) = 0 [pid 3071] <... futex resumed>) = 0 [pid 3073] umount2("./file0", MNT_DETACH [pid 3071] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3073] <... umount2 resumed>) = 0 [pid 3073] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3071] <... futex resumed>) = 0 [pid 3073] <... futex resumed>) = 1 [pid 3071] exit_group(0 [pid 3073] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3071] <... exit_group resumed>) = ? [pid 3072] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3073] <... futex resumed>) = ? [pid 3072] +++ exited with 0 +++ [pid 3073] +++ exited with 0 +++ [pid 3071] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3071, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3074 ./strace-static-x86_64: Process 3074 attached [pid 3074] set_robust_list(0x5555564465e0, 24) = 0 [pid 3074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3074] setpgid(0, 0) = 0 [pid 3074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3074] write(3, "1000", 4) = 4 [pid 3074] close(3) = 0 [pid 3074] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3074] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3074] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3075 attached [pid 3075] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3075] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3074] <... clone resumed>, parent_tid=[3075], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3075 [pid 3074] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3075] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3075] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3075] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3074] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3075] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3075] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3074] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3075] <... mount resumed>) = 0 [pid 3075] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3075] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3074] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3075] <... futex resumed>) = 0 [pid 3075] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3074] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3075] <... mount resumed>) = 0 [pid 3075] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3075] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3074] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3075] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3075] umount2("./file0", MNT_DETACH [pid 3074] <... futex resumed>) = 0 [pid 3074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3074] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3075] <... umount2 resumed>) = 0 [pid 3075] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3075] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3074] <... mprotect resumed>) = 0 [pid 3074] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3076 attached , parent_tid=[3076], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3076 [pid 3076] set_robust_list(0x7fc84e07e9e0, 24 [pid 3074] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3076] <... set_robust_list resumed>) = 0 [pid 3076] umount2("./file0", MNT_DETACH [pid 3074] <... futex resumed>) = 0 [pid 3074] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3076] <... umount2 resumed>) = 0 [pid 3076] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3074] <... futex resumed>) = 0 [pid 3076] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3074] exit_group(0) = ? [pid 3075] <... futex resumed>) = ? [pid 3075] +++ exited with 0 +++ [pid 3076] <... futex resumed>) = ? [pid 3076] +++ exited with 0 +++ [pid 3074] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3074, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3077 ./strace-static-x86_64: Process 3077 attached [pid 3077] set_robust_list(0x5555564465e0, 24) = 0 [pid 3077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3077] setpgid(0, 0) = 0 [pid 3077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3077] write(3, "1000", 4) = 4 [pid 3077] close(3) = 0 [pid 3077] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3077] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3077] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3077] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3078 attached , parent_tid=[3078], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3078 [pid 3078] set_robust_list(0x7fc84e09f9e0, 24 [pid 3077] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3078] <... set_robust_list resumed>) = 0 [pid 3077] <... futex resumed>) = 0 [pid 3077] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3078] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3078] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3077] <... futex resumed>) = 0 [pid 3078] <... futex resumed>) = 1 [pid 3077] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3078] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3077] <... futex resumed>) = 0 [pid 3077] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3078] <... mount resumed>) = 0 [pid 3078] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3077] <... futex resumed>) = 0 [pid 3078] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3077] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3077] <... futex resumed>) = 0 [pid 3078] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3077] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3078] <... mount resumed>) = 0 [pid 3078] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3077] <... futex resumed>) = 0 [pid 3078] umount2("./file0", MNT_DETACH [pid 3077] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3077] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3077] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3077] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3078] <... umount2 resumed>) = 0 [pid 3077] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3078] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3079 attached ) = 0 [pid 3079] set_robust_list(0x7fc84e07e9e0, 24 [pid 3078] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3077] <... clone resumed>, parent_tid=[3079], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3079 [pid 3079] <... set_robust_list resumed>) = 0 [pid 3077] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3079] umount2("./file0", MNT_DETACH [pid 3077] <... futex resumed>) = 0 [pid 3077] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3079] <... umount2 resumed>) = 0 [pid 3079] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3077] <... futex resumed>) = 0 [pid 3077] exit_group(0 [pid 3079] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3077] <... exit_group resumed>) = ? [pid 3079] <... futex resumed>) = ? [pid 3079] +++ exited with 0 +++ [pid 3078] <... futex resumed>) = ? [pid 3078] +++ exited with 0 +++ [pid 3077] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3077, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3080 ./strace-static-x86_64: Process 3080 attached [pid 3080] set_robust_list(0x5555564465e0, 24) = 0 [pid 3080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3080] setpgid(0, 0) = 0 [pid 3080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3080] write(3, "1000", 4) = 4 [pid 3080] close(3) = 0 [pid 3080] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3080] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3080] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3081 attached , parent_tid=[3081], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3081 [pid 3081] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3081] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3080] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3081] <... futex resumed>) = 0 [pid 3080] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3081] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3081] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3081] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3080] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3081] <... futex resumed>) = 0 [pid 3081] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3080] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3081] <... mount resumed>) = 0 [pid 3081] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3081] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3080] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3081] <... futex resumed>) = 0 [pid 3081] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3080] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3081] <... mount resumed>) = 0 [pid 3081] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3080] <... futex resumed>) = 0 [pid 3080] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3080] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3080] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3080] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3081] umount2("./file0", MNT_DETACH [pid 3080] <... clone resumed>, parent_tid=[3082], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3082 [pid 3080] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3080] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3082 attached [pid 3082] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3082] umount2("./file0", MNT_DETACH) = 0 [pid 3082] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3080] <... futex resumed>) = 0 [pid 3082] <... futex resumed>) = 1 [pid 3082] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3081] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 3081] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3081] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3080] exit_group(0) = ? [pid 3082] <... futex resumed>) = ? [pid 3081] <... futex resumed>) = ? [pid 3082] +++ exited with 0 +++ [pid 3081] +++ exited with 0 +++ [pid 3080] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3080, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3083 ./strace-static-x86_64: Process 3083 attached [pid 3083] set_robust_list(0x5555564465e0, 24) = 0 [pid 3083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3083] setpgid(0, 0) = 0 [pid 3083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3083] write(3, "1000", 4) = 4 [pid 3083] close(3) = 0 [pid 3083] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3083] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3083] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3083] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3084 attached , parent_tid=[3084], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3084 [pid 3084] set_robust_list(0x7fc84e09f9e0, 24 [pid 3083] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3084] <... set_robust_list resumed>) = 0 [pid 3083] <... futex resumed>) = 0 [pid 3083] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3084] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3084] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3083] <... futex resumed>) = 0 [pid 3084] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3083] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3084] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3083] <... futex resumed>) = 0 [pid 3084] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3083] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3084] <... mount resumed>) = 0 [pid 3084] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3083] <... futex resumed>) = 0 [pid 3084] <... futex resumed>) = 1 [pid 3083] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3084] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3083] <... futex resumed>) = 0 [pid 3083] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3084] <... mount resumed>) = 0 [pid 3084] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3083] <... futex resumed>) = 0 [pid 3083] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3083] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3083] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3083] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3083] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3084] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3085 attached [pid 3083] <... clone resumed>, parent_tid=[3085], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3085 [pid 3083] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3083] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3085] set_robust_list(0x7fc84e07e9e0, 24 [pid 3084] <... umount2 resumed>) = 0 [pid 3085] <... set_robust_list resumed>) = 0 [pid 3084] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3085] umount2("./file0", MNT_DETACH [pid 3084] <... futex resumed>) = 0 [pid 3084] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3085] <... umount2 resumed>) = 0 [pid 3085] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3083] <... futex resumed>) = 0 [pid 3083] exit_group(0) = ? [pid 3084] <... futex resumed>) = ? [pid 3084] +++ exited with 0 +++ [pid 3085] +++ exited with 0 +++ [pid 3083] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3083, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3086 ./strace-static-x86_64: Process 3086 attached [pid 3086] set_robust_list(0x5555564465e0, 24) = 0 [pid 3086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3086] setpgid(0, 0) = 0 [pid 3086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3086] write(3, "1000", 4) = 4 [pid 3086] close(3) = 0 [pid 3086] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3086] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3086] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3087 attached , parent_tid=[3087], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3087 [pid 3087] set_robust_list(0x7fc84e09f9e0, 24 [pid 3086] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3087] <... set_robust_list resumed>) = 0 [pid 3086] <... futex resumed>) = 0 [pid 3086] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3087] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3087] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3086] <... futex resumed>) = 0 [pid 3086] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3087] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3086] <... futex resumed>) = 0 [pid 3086] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3087] <... mount resumed>) = 0 [pid 3087] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3086] <... futex resumed>) = 0 [pid 3087] <... futex resumed>) = 1 [pid 3086] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3087] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3086] <... futex resumed>) = 0 [pid 3086] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3087] <... mount resumed>) = 0 [pid 3087] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3086] <... futex resumed>) = 0 [pid 3086] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3086] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3086] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3086] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3088 attached , parent_tid=[3088], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3088 [pid 3086] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3086] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3088] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3088] umount2("./file0", MNT_DETACH [pid 3087] umount2("./file0", MNT_DETACH [pid 3088] <... umount2 resumed>) = 0 [pid 3088] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3087] <... umount2 resumed>) = 0 [pid 3088] <... futex resumed>) = 1 [pid 3086] <... futex resumed>) = 0 [pid 3088] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3087] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3087] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3086] exit_group(0) = ? [pid 3088] <... futex resumed>) = ? [pid 3087] <... futex resumed>) = ? [pid 3088] +++ exited with 0 +++ [pid 3087] +++ exited with 0 +++ [pid 3086] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3086, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3089 ./strace-static-x86_64: Process 3089 attached [pid 3089] set_robust_list(0x5555564465e0, 24) = 0 [pid 3089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3089] setpgid(0, 0) = 0 [pid 3089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3089] write(3, "1000", 4) = 4 [pid 3089] close(3) = 0 [pid 3089] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3089] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3089] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3090], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3090 [pid 3089] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3090 attached [pid 3090] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3090] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3090] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3089] <... futex resumed>) = 0 [pid 3089] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3090] <... futex resumed>) = 1 [pid 3090] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3090] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3089] <... futex resumed>) = 0 [pid 3089] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3090] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3090] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3090] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3089] <... futex resumed>) = 0 [pid 3089] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3089] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3089] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3091], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3091 [pid 3089] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3089] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3091 attached [pid 3091] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3091] umount2("./file0", MNT_DETACH [pid 3090] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3090] umount2("./file0", MNT_DETACH [pid 3091] <... umount2 resumed>) = 0 [pid 3091] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3089] <... futex resumed>) = 0 [pid 3091] <... futex resumed>) = 1 [pid 3091] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3090] <... umount2 resumed>) = 0 [pid 3090] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3090] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3089] exit_group(0) = ? [pid 3091] <... futex resumed>) = 231 [pid 3090] <... futex resumed>) = ? [pid 3090] +++ exited with 0 +++ [pid 3091] +++ exited with 0 +++ [pid 3089] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3089, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3092 ./strace-static-x86_64: Process 3092 attached [pid 3092] set_robust_list(0x5555564465e0, 24) = 0 [pid 3092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3092] setpgid(0, 0) = 0 [pid 3092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3092] write(3, "1000", 4) = 4 [pid 3092] close(3) = 0 [pid 3092] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3092] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3092] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3093 attached , parent_tid=[3093], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3093 [pid 3093] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3093] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3092] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3093] <... futex resumed>) = 0 [pid 3093] mkdir("./file0", 000 [pid 3092] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3093] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3093] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3093] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3092] <... futex resumed>) = 0 [pid 3092] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3093] <... futex resumed>) = 0 [pid 3092] <... futex resumed>) = 1 [pid 3093] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3092] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3093] <... mount resumed>) = 0 [pid 3093] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3092] <... futex resumed>) = 0 [pid 3093] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3092] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3092] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3093] <... mount resumed>) = 0 [pid 3093] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3092] <... futex resumed>) = 0 [pid 3093] umount2("./file0", MNT_DETACH [pid 3092] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3092] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3093] <... umount2 resumed>) = 0 [pid 3093] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3092] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3093] <... futex resumed>) = 0 [pid 3092] <... mprotect resumed>) = 0 [pid 3093] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3092] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3094 attached , parent_tid=[3094], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3094 [pid 3094] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3094] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3092] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3094] <... futex resumed>) = 0 [pid 3094] umount2("./file0", MNT_DETACH) = 0 [pid 3092] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3094] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3094] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3092] exit_group(0) = ? [pid 3094] <... futex resumed>) = ? [pid 3093] <... futex resumed>) = ? [pid 3094] +++ exited with 0 +++ [pid 3093] +++ exited with 0 +++ [pid 3092] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3092, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3095 ./strace-static-x86_64: Process 3095 attached [pid 3095] set_robust_list(0x5555564465e0, 24) = 0 [pid 3095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3095] setpgid(0, 0) = 0 [pid 3095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3095] write(3, "1000", 4) = 4 [pid 3095] close(3) = 0 [pid 3095] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3095] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3095] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3096 attached , parent_tid=[3096], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3096 [pid 3096] set_robust_list(0x7fc84e09f9e0, 24 [pid 3095] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3096] <... set_robust_list resumed>) = 0 [pid 3095] <... futex resumed>) = 0 [pid 3095] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3096] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3096] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3095] <... futex resumed>) = 0 [pid 3096] <... futex resumed>) = 1 [pid 3095] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3096] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3095] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3096] <... mount resumed>) = 0 [pid 3096] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3095] <... futex resumed>) = 0 [pid 3096] <... futex resumed>) = 1 [pid 3095] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3096] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3095] <... futex resumed>) = 0 [pid 3095] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3096] <... mount resumed>) = 0 [pid 3096] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3095] <... futex resumed>) = 0 [pid 3096] <... futex resumed>) = 1 [pid 3095] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3096] umount2("./file0", MNT_DETACH [pid 3095] <... futex resumed>) = 0 [pid 3095] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3095] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3095] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3096] <... umount2 resumed>) = 0 [pid 3096] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3097 attached ) = 0 [pid 3095] <... clone resumed>, parent_tid=[3097], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3097 [pid 3097] set_robust_list(0x7fc84e07e9e0, 24 [pid 3096] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3097] <... set_robust_list resumed>) = 0 [pid 3095] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3097] umount2("./file0", MNT_DETACH [pid 3095] <... futex resumed>) = 0 [pid 3095] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3097] <... umount2 resumed>) = 0 [pid 3097] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3095] <... futex resumed>) = 0 [pid 3097] <... futex resumed>) = 1 [pid 3095] exit_group(0 [pid 3097] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3095] <... exit_group resumed>) = ? [pid 3096] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3097] <... futex resumed>) = ? [pid 3096] +++ exited with 0 +++ [pid 3097] +++ exited with 0 +++ [pid 3095] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3095, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3098 attached , child_tidptr=0x5555564465d0) = 3098 [pid 3098] set_robust_list(0x5555564465e0, 24) = 0 [pid 3098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3098] setpgid(0, 0) = 0 [pid 3098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3098] write(3, "1000", 4) = 4 [pid 3098] close(3) = 0 [pid 3098] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3098] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3098] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3099], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3099 [pid 3098] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3099 attached ) = 0 [pid 3098] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3099] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3099] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3099] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3098] <... futex resumed>) = 0 [pid 3099] <... futex resumed>) = 1 [pid 3098] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3099] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3098] <... futex resumed>) = 0 [pid 3098] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3099] <... mount resumed>) = 0 [pid 3099] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3098] <... futex resumed>) = 0 [pid 3099] <... futex resumed>) = 1 [pid 3098] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3099] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3098] <... futex resumed>) = 0 [pid 3098] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3099] <... mount resumed>) = 0 [pid 3099] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3098] <... futex resumed>) = 0 [pid 3098] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3098] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3098] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3099] umount2("./file0", MNT_DETACH [pid 3098] <... mprotect resumed>) = 0 [pid 3098] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3100], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3100 [pid 3099] <... umount2 resumed>) = 0 [pid 3098] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3098] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3100 attached [pid 3100] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3100] umount2("./file0", MNT_DETACH) = 0 [pid 3099] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3100] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3099] <... futex resumed>) = 0 [pid 3098] <... futex resumed>) = 0 [pid 3099] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3098] exit_group(0) = ? [pid 3099] <... futex resumed>) = ? [pid 3100] <... futex resumed>) = ? [pid 3099] +++ exited with 0 +++ [pid 3100] +++ exited with 0 +++ [pid 3098] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3098, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3101 ./strace-static-x86_64: Process 3101 attached [pid 3101] set_robust_list(0x5555564465e0, 24) = 0 [pid 3101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3101] setpgid(0, 0) = 0 [pid 3101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3101] write(3, "1000", 4) = 4 [pid 3101] close(3) = 0 [pid 3101] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3101] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3101] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3102 attached , parent_tid=[3102], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3102 [pid 3102] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3102] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3102] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3101] <... futex resumed>) = 1 [pid 3102] <... futex resumed>) = 0 [pid 3102] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3101] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3102] <... futex resumed>) = 0 [pid 3101] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3102] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3102] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3101] <... futex resumed>) = 0 [pid 3101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3102] <... futex resumed>) = 0 [pid 3101] <... futex resumed>) = 1 [pid 3102] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3101] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3102] <... mount resumed>) = 0 [pid 3102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3101] <... futex resumed>) = 0 [pid 3101] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3101] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3101] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3101] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3102] umount2("./file0", MNT_DETACH [pid 3101] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3103 attached [pid 3102] <... umount2 resumed>) = 0 [pid 3101] <... clone resumed>, parent_tid=[3103], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3103 [pid 3103] set_robust_list(0x7fc84e07e9e0, 24 [pid 3102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3101] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3101] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3103] <... set_robust_list resumed>) = 0 [pid 3102] <... futex resumed>) = 0 [pid 3103] umount2("./file0", MNT_DETACH [pid 3102] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3103] <... umount2 resumed>) = 0 [pid 3103] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3101] <... futex resumed>) = 0 [pid 3101] exit_group(0 [pid 3102] <... futex resumed>) = ? [pid 3102] +++ exited with 0 +++ [pid 3101] <... exit_group resumed>) = ? [pid 3103] +++ exited with 0 +++ [pid 3101] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3101, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3104 ./strace-static-x86_64: Process 3104 attached [pid 3104] set_robust_list(0x5555564465e0, 24) = 0 [pid 3104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3104] setpgid(0, 0) = 0 [pid 3104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3104] write(3, "1000", 4) = 4 [pid 3104] close(3) = 0 [pid 3104] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3104] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3104] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3105 attached [pid 3105] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3104] <... clone resumed>, parent_tid=[3105], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3105 [pid 3104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3105] <... futex resumed>) = 0 [pid 3105] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3104] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3105] <... futex resumed>) = 0 [pid 3105] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3104] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3105] <... mount resumed>) = 0 [pid 3105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3104] <... futex resumed>) = 0 [pid 3104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3105] <... futex resumed>) = 0 [pid 3105] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3104] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3105] <... mount resumed>) = 0 [pid 3105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3104] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3104] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3105] <... futex resumed>) = 0 [pid 3105] umount2("./file0", MNT_DETACH [pid 3104] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3105] <... umount2 resumed>) = 0 [pid 3105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3105] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3104] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3104] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3106 attached , parent_tid=[3106], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3106 [pid 3106] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3106] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3104] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3106] <... futex resumed>) = 0 [pid 3106] umount2("./file0", MNT_DETACH [pid 3104] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3106] <... umount2 resumed>) = 0 [pid 3106] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3104] <... futex resumed>) = 0 [pid 3104] exit_group(0 [pid 3105] <... futex resumed>) = ? [pid 3105] +++ exited with 0 +++ [pid 3104] <... exit_group resumed>) = ? [pid 3106] +++ exited with 0 +++ [pid 3104] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3104, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3107 ./strace-static-x86_64: Process 3107 attached [pid 3107] set_robust_list(0x5555564465e0, 24) = 0 [pid 3107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3107] setpgid(0, 0) = 0 [pid 3107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3107] write(3, "1000", 4) = 4 [pid 3107] close(3) = 0 [pid 3107] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3107] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3107] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3108 attached , parent_tid=[3108], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3108 [pid 3108] set_robust_list(0x7fc84e09f9e0, 24 [pid 3107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3108] <... set_robust_list resumed>) = 0 [pid 3107] <... futex resumed>) = 0 [pid 3107] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3108] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3107] <... futex resumed>) = 0 [pid 3108] <... futex resumed>) = 1 [pid 3107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3108] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3107] <... futex resumed>) = 0 [pid 3107] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3108] <... mount resumed>) = 0 [pid 3108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3107] <... futex resumed>) = 0 [pid 3108] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3107] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3108] <... mount resumed>) = 0 [pid 3108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3107] <... futex resumed>) = 0 [pid 3108] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3107] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3107] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3107] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3107] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 3109 attached [pid 3108] umount2("./file0", MNT_DETACH [pid 3107] <... clone resumed>, parent_tid=[3109], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3109 [pid 3107] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3107] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3109] set_robust_list(0x7fc84e07e9e0, 24 [pid 3108] <... umount2 resumed>) = 0 [pid 3109] <... set_robust_list resumed>) = 0 [pid 3108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3109] umount2("./file0", MNT_DETACH [pid 3108] <... futex resumed>) = 0 [pid 3108] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3109] <... umount2 resumed>) = 0 [pid 3109] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3107] <... futex resumed>) = 0 [pid 3109] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3107] exit_group(0 [pid 3108] <... futex resumed>) = ? [pid 3107] <... exit_group resumed>) = ? [pid 3108] +++ exited with 0 +++ [pid 3109] <... futex resumed>) = ? [pid 3109] +++ exited with 0 +++ [pid 3107] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3107, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3110 ./strace-static-x86_64: Process 3110 attached [pid 3110] set_robust_list(0x5555564465e0, 24) = 0 [pid 3110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3110] setpgid(0, 0) = 0 [pid 3110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3110] write(3, "1000", 4) = 4 [pid 3110] close(3) = 0 [pid 3110] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3110] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3110] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3111 attached [pid 3111] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3111] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3110] <... clone resumed>, parent_tid=[3111], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3111 [pid 3110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3111] <... futex resumed>) = 0 [pid 3110] <... futex resumed>) = 1 [pid 3111] mkdir("./file0", 000 [pid 3110] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3111] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3110] <... futex resumed>) = 0 [pid 3111] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3110] <... futex resumed>) = 0 [pid 3111] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3110] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3111] <... mount resumed>) = 0 [pid 3111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3110] <... futex resumed>) = 0 [pid 3111] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3110] <... futex resumed>) = 0 [pid 3111] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3110] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3111] <... mount resumed>) = 0 [pid 3111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3110] <... futex resumed>) = 0 [pid 3111] umount2("./file0", MNT_DETACH [pid 3110] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3110] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3110] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3111] <... umount2 resumed>) = 0 [pid 3110] <... mprotect resumed>) = 0 [pid 3111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3110] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3111] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3112 attached [pid 3110] <... clone resumed>, parent_tid=[3112], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3112 [pid 3112] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3112] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3111] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3110] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3112] <... futex resumed>) = 0 [pid 3112] umount2("./file0", MNT_DETACH [pid 3110] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3112] <... umount2 resumed>) = 0 [pid 3112] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3112] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3110] <... futex resumed>) = 0 [pid 3110] exit_group(0 [pid 3111] <... futex resumed>) = ? [pid 3110] <... exit_group resumed>) = ? [pid 3112] <... futex resumed>) = ? [pid 3112] +++ exited with 0 +++ [pid 3111] +++ exited with 0 +++ [pid 3110] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3110, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3113 ./strace-static-x86_64: Process 3113 attached [pid 3113] set_robust_list(0x5555564465e0, 24) = 0 [pid 3113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3113] setpgid(0, 0) = 0 [pid 3113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3113] write(3, "1000", 4) = 4 [pid 3113] close(3) = 0 [pid 3113] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3113] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3113] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3114 attached , parent_tid=[3114], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3114 [pid 3114] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3114] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3113] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3114] <... futex resumed>) = 0 [pid 3114] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3114] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3113] <... futex resumed>) = 0 [pid 3113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3114] <... futex resumed>) = 0 [pid 3114] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3113] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3114] <... mount resumed>) = 0 [pid 3114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3114] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3113] <... futex resumed>) = 0 [pid 3113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3114] <... futex resumed>) = 0 [pid 3114] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3113] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3114] <... mount resumed>) = 0 [pid 3114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3113] <... futex resumed>) = 0 [pid 3113] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3113] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3113] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3113] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3114] umount2("./file0", MNT_DETACH [pid 3113] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3115], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3115 [pid 3114] <... umount2 resumed>) = 0 [pid 3113] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3113] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3115 attached [pid 3115] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3115] umount2("./file0", MNT_DETACH [pid 3114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3115] <... umount2 resumed>) = 0 [pid 3114] <... futex resumed>) = 0 [pid 3115] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3114] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3113] <... futex resumed>) = 0 [pid 3113] exit_group(0) = ? [pid 3114] <... futex resumed>) = ? [pid 3115] <... futex resumed>) = ? [pid 3115] +++ exited with 0 +++ [pid 3114] +++ exited with 0 +++ [pid 3113] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3113, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3116 attached , child_tidptr=0x5555564465d0) = 3116 [pid 3116] set_robust_list(0x5555564465e0, 24) = 0 [pid 3116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3116] setpgid(0, 0) = 0 [pid 3116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3116] write(3, "1000", 4) = 4 [pid 3116] close(3) = 0 [pid 3116] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3116] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3116] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3117], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3117 [pid 3116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3117 attached [pid 3117] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3117] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3116] <... futex resumed>) = 0 [pid 3116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3117] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3116] <... futex resumed>) = 0 [pid 3116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3117] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3116] <... futex resumed>) = 0 [pid 3116] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3116] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3116] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3117] umount2("./file0", MNT_DETACH [pid 3116] <... clone resumed>, parent_tid=[3118], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3118 [pid 3116] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3116] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3118 attached [pid 3118] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3118] umount2("./file0", MNT_DETACH) = 0 [pid 3118] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3116] <... futex resumed>) = 0 [pid 3118] <... futex resumed>) = 1 [pid 3118] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3117] <... umount2 resumed>) = 0 [pid 3117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3117] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3116] exit_group(0) = ? [pid 3118] <... futex resumed>) = ? [pid 3118] +++ exited with 0 +++ [pid 3117] <... futex resumed>) = ? [pid 3117] +++ exited with 0 +++ [pid 3116] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3116, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3119 ./strace-static-x86_64: Process 3119 attached [pid 3119] set_robust_list(0x5555564465e0, 24) = 0 [pid 3119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3119] setpgid(0, 0) = 0 [pid 3119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3119] write(3, "1000", 4) = 4 [pid 3119] close(3) = 0 [pid 3119] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3119] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3119] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3120 attached , parent_tid=[3120], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3120 [pid 3120] set_robust_list(0x7fc84e09f9e0, 24 [pid 3119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3120] <... set_robust_list resumed>) = 0 [pid 3119] <... futex resumed>) = 0 [pid 3120] mkdir("./file0", 000 [pid 3119] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3120] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3119] <... futex resumed>) = 0 [pid 3120] <... futex resumed>) = 1 [pid 3119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3120] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3119] <... futex resumed>) = 0 [pid 3119] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3120] <... mount resumed>) = 0 [pid 3120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3119] <... futex resumed>) = 0 [pid 3120] <... futex resumed>) = 1 [pid 3119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3120] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3119] <... futex resumed>) = 0 [pid 3119] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3120] <... mount resumed>) = 0 [pid 3120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3119] <... futex resumed>) = 0 [pid 3120] <... futex resumed>) = 1 [pid 3119] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3120] umount2("./file0", MNT_DETACH [pid 3119] <... futex resumed>) = 0 [pid 3119] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3119] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3119] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3120] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3121 attached [pid 3120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3121] set_robust_list(0x7fc84e07e9e0, 24 [pid 3120] <... futex resumed>) = 0 [pid 3119] <... clone resumed>, parent_tid=[3121], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3121 [pid 3121] <... set_robust_list resumed>) = 0 [pid 3120] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3121] umount2("./file0", MNT_DETACH [pid 3119] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3121] <... umount2 resumed>) = 0 [pid 3119] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3121] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3121] <... futex resumed>) = 0 [pid 3119] exit_group(0 [pid 3121] ????( [pid 3120] <... futex resumed>) = 231 [pid 3119] <... exit_group resumed>) = ? [pid 3121] <... ???? resumed>) = ? [pid 3120] +++ exited with 0 +++ [pid 3121] +++ exited with 0 +++ [pid 3119] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3119, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3122 ./strace-static-x86_64: Process 3122 attached [pid 3122] set_robust_list(0x5555564465e0, 24) = 0 [pid 3122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3122] setpgid(0, 0) = 0 [pid 3122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3122] write(3, "1000", 4) = 4 [pid 3122] close(3) = 0 [pid 3122] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3122] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3122] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3123 attached , parent_tid=[3123], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3123 [pid 3123] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3123] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3123] <... futex resumed>) = 0 [pid 3123] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3123] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3123] <... futex resumed>) = 0 [pid 3123] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3123] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3123] <... futex resumed>) = 0 [pid 3123] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3123] <... mount resumed>) = 0 [pid 3123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3122] <... futex resumed>) = 0 [pid 3123] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3123] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3123] umount2("./file0", MNT_DETACH [pid 3122] <... futex resumed>) = 0 [pid 3123] <... umount2 resumed>) = 0 [pid 3123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3122] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3123] <... futex resumed>) = 0 [pid 3122] <... futex resumed>) = 0 [pid 3123] umount2("./file0", MNT_DETACH [pid 3122] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3123] <... umount2 resumed>) = 0 [pid 3123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3123] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3122] <... futex resumed>) = 0 [pid 3122] exit_group(0) = ? [pid 3123] <... futex resumed>) = ? [pid 3123] +++ exited with 0 +++ [pid 3122] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3122, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3124 ./strace-static-x86_64: Process 3124 attached [pid 3124] set_robust_list(0x5555564465e0, 24) = 0 [pid 3124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3124] setpgid(0, 0) = 0 [pid 3124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3124] write(3, "1000", 4) = 4 [pid 3124] close(3) = 0 [pid 3124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3124] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3124] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3125 attached , parent_tid=[3125], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3125 [pid 3125] set_robust_list(0x7fc84e09f9e0, 24 [pid 3124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3125] <... set_robust_list resumed>) = 0 [pid 3124] <... futex resumed>) = 0 [pid 3124] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3125] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3124] <... futex resumed>) = 0 [pid 3125] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3124] <... futex resumed>) = 0 [pid 3125] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3124] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3125] <... mount resumed>) = 0 [pid 3125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3124] <... futex resumed>) = 0 [pid 3124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3124] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3125] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3124] <... futex resumed>) = 0 [pid 3125] umount2("./file0", MNT_DETACH [pid 3124] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3124] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3125] <... umount2 resumed>) = 0 [pid 3124] <... mmap resumed>) = 0x7fc84e05e000 [pid 3124] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3124] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3126], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3126 [pid 3124] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3124] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3126 attached [pid 3126] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3126] umount2("./file0", MNT_DETACH [pid 3125] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3126] <... umount2 resumed>) = 0 [pid 3125] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3126] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3124] <... futex resumed>) = 0 [pid 3126] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3124] exit_group(0) = ? [pid 3125] <... futex resumed>) = ? [pid 3126] <... futex resumed>) = ? [pid 3125] +++ exited with 0 +++ [pid 3126] +++ exited with 0 +++ [pid 3124] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3124, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3127 ./strace-static-x86_64: Process 3127 attached [pid 3127] set_robust_list(0x5555564465e0, 24) = 0 [pid 3127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3127] setpgid(0, 0) = 0 [pid 3127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3127] write(3, "1000", 4) = 4 [pid 3127] close(3) = 0 [pid 3127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3127] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3127] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3127] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3128], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3128 [pid 3127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3127] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3128 attached [pid 3128] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3128] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3127] <... futex resumed>) = 0 [pid 3127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3127] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3128] <... futex resumed>) = 1 [pid 3128] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3127] <... futex resumed>) = 0 [pid 3127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3127] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3128] <... futex resumed>) = 1 [pid 3128] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3127] <... futex resumed>) = 0 [pid 3128] umount2("./file0", MNT_DETACH [pid 3127] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3127] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3127] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3128] <... umount2 resumed>) = 0 [pid 3127] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3128] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3127] <... mprotect resumed>) = 0 [pid 3128] <... futex resumed>) = 0 [pid 3127] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3129 attached [pid 3128] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3129] set_robust_list(0x7fc84e07e9e0, 24 [pid 3127] <... clone resumed>, parent_tid=[3129], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3129 [pid 3129] <... set_robust_list resumed>) = 0 [pid 3127] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3129] umount2("./file0", MNT_DETACH [pid 3127] <... futex resumed>) = 0 [pid 3127] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3129] <... umount2 resumed>) = 0 [pid 3129] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3127] <... futex resumed>) = 0 [pid 3129] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3127] exit_group(0) = ? [pid 3128] <... futex resumed>) = ? [pid 3129] <... futex resumed>) = ? [pid 3129] +++ exited with 0 +++ [pid 3128] +++ exited with 0 +++ [pid 3127] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3127, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3130 ./strace-static-x86_64: Process 3130 attached [pid 3130] set_robust_list(0x5555564465e0, 24) = 0 [pid 3130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3130] setpgid(0, 0) = 0 [pid 3130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3130] write(3, "1000", 4) = 4 [pid 3130] close(3) = 0 [pid 3130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3130] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3130] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3131 attached [pid 3131] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3130] <... clone resumed>, parent_tid=[3131], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3131 [pid 3130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3131] <... futex resumed>) = 0 [pid 3130] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3131] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3131] <... futex resumed>) = 0 [pid 3131] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3130] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3131] <... mount resumed>) = 0 [pid 3131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3130] <... futex resumed>) = 0 [pid 3130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3131] <... futex resumed>) = 0 [pid 3130] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3131] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3130] <... futex resumed>) = 0 [pid 3131] umount2("./file0", MNT_DETACH [pid 3130] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3130] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3130] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3131] <... umount2 resumed>) = 0 [pid 3130] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3131] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3130] <... clone resumed>, parent_tid=[3132], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3132 [pid 3131] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3130] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3130] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3132 attached [pid 3132] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3132] umount2("./file0", MNT_DETACH) = 0 [pid 3132] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3130] <... futex resumed>) = 0 [pid 3130] exit_group(0) = ? [pid 3131] <... futex resumed>) = ? [pid 3131] +++ exited with 0 +++ [pid 3132] +++ exited with 0 +++ [pid 3130] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3130, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3133 ./strace-static-x86_64: Process 3133 attached [pid 3133] set_robust_list(0x5555564465e0, 24) = 0 [pid 3133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3133] setpgid(0, 0) = 0 [pid 3133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3133] write(3, "1000", 4) = 4 [pid 3133] close(3) = 0 [pid 3133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3133] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3133] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3133] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3134 attached [pid 3134] set_robust_list(0x7fc84e09f9e0, 24 [pid 3133] <... clone resumed>, parent_tid=[3134], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3134 [pid 3133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3134] <... set_robust_list resumed>) = 0 [pid 3133] <... futex resumed>) = 0 [pid 3134] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3134] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3133] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3133] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3134] <... futex resumed>) = 0 [pid 3134] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3133] <... futex resumed>) = 0 [pid 3134] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3133] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3134] <... mount resumed>) = 0 [pid 3134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3134] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3133] <... futex resumed>) = 0 [pid 3133] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3133] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3133] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3133] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3133] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3135 attached , parent_tid=[3135], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3135 [pid 3133] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3133] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3134] <... futex resumed>) = 0 [pid 3134] umount2("./file0", MNT_DETACH [pid 3135] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3135] umount2("./file0", MNT_DETACH) = 0 [pid 3135] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3133] <... futex resumed>) = 0 [pid 3135] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3134] <... umount2 resumed>) = 0 [pid 3134] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3134] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3133] exit_group(0 [pid 3135] <... futex resumed>) = ? [pid 3133] <... exit_group resumed>) = ? [pid 3134] <... futex resumed>) = ? [pid 3134] +++ exited with 0 +++ [pid 3135] +++ exited with 0 +++ [pid 3133] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3133, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3136 attached , child_tidptr=0x5555564465d0) = 3136 [pid 3136] set_robust_list(0x5555564465e0, 24) = 0 [pid 3136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3136] setpgid(0, 0) = 0 [pid 3136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3136] write(3, "1000", 4) = 4 [pid 3136] close(3) = 0 [pid 3136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3136] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3136] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3137 attached , parent_tid=[3137], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3137 [pid 3137] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3137] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3137] <... futex resumed>) = 0 [pid 3137] mkdir("./file0", 000 [pid 3136] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3137] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3137] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3137] <... futex resumed>) = 0 [pid 3137] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3136] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3137] <... mount resumed>) = 0 [pid 3137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3137] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3137] <... futex resumed>) = 0 [pid 3137] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3136] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3137] <... mount resumed>) = 0 [pid 3137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3136] <... futex resumed>) = 0 [pid 3136] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3136] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3137] umount2("./file0", MNT_DETACH [pid 3136] <... mmap resumed>) = 0x7fc84e05e000 [pid 3136] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3136] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3137] <... umount2 resumed>) = 0 [pid 3137] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3136] <... clone resumed>, parent_tid=[3138], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3138 [pid 3136] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3136] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3138 attached [pid 3137] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3138] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3138] umount2("./file0", MNT_DETACH) = 0 [pid 3138] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3136] <... futex resumed>) = 0 [pid 3136] exit_group(0) = ? [pid 3137] <... futex resumed>) = ? [pid 3138] <... futex resumed>) = ? [pid 3138] +++ exited with 0 +++ [pid 3137] +++ exited with 0 +++ [pid 3136] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3136, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3139 ./strace-static-x86_64: Process 3139 attached [pid 3139] set_robust_list(0x5555564465e0, 24) = 0 [pid 3139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3139] setpgid(0, 0) = 0 [pid 3139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3139] write(3, "1000", 4) = 4 [pid 3139] close(3) = 0 [pid 3139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3139] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3139] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3140 attached , parent_tid=[3140], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3140 [pid 3140] set_robust_list(0x7fc84e09f9e0, 24 [pid 3139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3139] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3140] <... set_robust_list resumed>) = 0 [pid 3140] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3139] <... futex resumed>) = 0 [pid 3139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3139] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3140] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3139] <... futex resumed>) = 0 [pid 3139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3140] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3139] <... futex resumed>) = 0 [pid 3139] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3140] <... mount resumed>) = 0 [pid 3140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3139] <... futex resumed>) = 0 [pid 3139] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3139] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3139] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3140] umount2("./file0", MNT_DETACH [pid 3139] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3141], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3141 [pid 3140] <... umount2 resumed>) = 0 [pid 3139] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3139] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3141 attached [pid 3141] set_robust_list(0x7fc84e07e9e0, 24 [pid 3140] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3141] <... set_robust_list resumed>) = 0 [pid 3141] umount2("./file0", MNT_DETACH [pid 3140] <... futex resumed>) = 0 [pid 3140] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3141] <... umount2 resumed>) = 0 [pid 3141] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3139] <... futex resumed>) = 0 [pid 3139] exit_group(0) = ? [pid 3141] <... futex resumed>) = ? [pid 3140] <... futex resumed>) = ? [pid 3141] +++ exited with 0 +++ [pid 3140] +++ exited with 0 +++ [pid 3139] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3139, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3142 ./strace-static-x86_64: Process 3142 attached [pid 3142] set_robust_list(0x5555564465e0, 24) = 0 [pid 3142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3142] setpgid(0, 0) = 0 [pid 3142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3142] write(3, "1000", 4) = 4 [pid 3142] close(3) = 0 [pid 3142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3142] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3142] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3143 attached [pid 3143] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3142] <... clone resumed>, parent_tid=[3143], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3143 [pid 3142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3143] <... futex resumed>) = 0 [pid 3143] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3142] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3142] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3143] <... futex resumed>) = 0 [pid 3143] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3142] <... futex resumed>) = 0 [pid 3142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3143] <... futex resumed>) = 0 [pid 3142] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3143] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3142] <... futex resumed>) = 0 [pid 3143] <... futex resumed>) = 1 [pid 3142] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3143] umount2("./file0", MNT_DETACH [pid 3142] <... futex resumed>) = 0 [pid 3142] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3142] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3143] <... umount2 resumed>) = 0 [pid 3142] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3143] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3144 attached [pid 3143] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3142] <... clone resumed>, parent_tid=[3144], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3144 [pid 3144] set_robust_list(0x7fc84e07e9e0, 24 [pid 3142] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3144] <... set_robust_list resumed>) = 0 [pid 3142] <... futex resumed>) = 0 [pid 3144] umount2("./file0", MNT_DETACH [pid 3142] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3144] <... umount2 resumed>) = 0 [pid 3144] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3142] <... futex resumed>) = 0 [pid 3144] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3142] exit_group(0) = ? [pid 3143] <... futex resumed>) = 231 [pid 3144] <... futex resumed>) = ? [pid 3143] +++ exited with 0 +++ [pid 3144] +++ exited with 0 +++ [pid 3142] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3142, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3145 ./strace-static-x86_64: Process 3145 attached [pid 3145] set_robust_list(0x5555564465e0, 24) = 0 [pid 3145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3145] setpgid(0, 0) = 0 [pid 3145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3145] write(3, "1000", 4) = 4 [pid 3145] close(3) = 0 [pid 3145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3145] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3145] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3146 attached , parent_tid=[3146], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3146 [pid 3146] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3146] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3146] <... futex resumed>) = 0 [pid 3145] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3146] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3146] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3145] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3146] <... futex resumed>) = 0 [pid 3146] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3145] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3146] <... mount resumed>) = 0 [pid 3146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3145] <... futex resumed>) = 0 [pid 3145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3145] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3146] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3145] <... futex resumed>) = 0 [pid 3145] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3145] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3145] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3145] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3146] umount2("./file0", MNT_DETACH [pid 3145] <... clone resumed>, parent_tid=[3147], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3147 [pid 3145] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3145] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3147 attached [pid 3147] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3147] umount2("./file0", MNT_DETACH) = 0 [pid 3147] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3145] <... futex resumed>) = 0 [pid 3147] <... futex resumed>) = 1 [pid 3147] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3146] <... umount2 resumed>) = 0 [pid 3146] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3146] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3145] exit_group(0) = ? [pid 3147] <... futex resumed>) = ? [pid 3147] +++ exited with 0 +++ [pid 3146] <... futex resumed>) = ? [pid 3146] +++ exited with 0 +++ [pid 3145] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3145, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3148 ./strace-static-x86_64: Process 3148 attached [pid 3148] set_robust_list(0x5555564465e0, 24) = 0 [pid 3148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3148] setpgid(0, 0) = 0 [pid 3148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3148] write(3, "1000", 4) = 4 [pid 3148] close(3) = 0 [pid 3148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3148] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3148] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3149], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3149 [pid 3148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3148] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3149 attached [pid 3149] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3149] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3148] <... futex resumed>) = 0 [pid 3149] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3149] <... mount resumed>) = 0 [pid 3148] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3148] <... futex resumed>) = 0 [pid 3149] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3149] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3149] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3148] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3149] <... mount resumed>) = 0 [pid 3149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3148] <... futex resumed>) = 0 [pid 3149] umount2("./file0", MNT_DETACH [pid 3148] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3148] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3149] <... umount2 resumed>) = 0 [pid 3148] <... futex resumed>) = 0 [pid 3149] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3149] <... futex resumed>) = 0 [pid 3148] <... mmap resumed>) = 0x7fc84e05e000 [pid 3149] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3148] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3148] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3150 attached [pid 3150] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3150] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3148] <... clone resumed>, parent_tid=[3150], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3150 [pid 3148] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3150] <... futex resumed>) = 0 [pid 3150] umount2("./file0", MNT_DETACH [pid 3148] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3150] <... umount2 resumed>) = 0 [pid 3150] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3148] <... futex resumed>) = 0 [pid 3148] exit_group(0 [pid 3150] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3148] <... exit_group resumed>) = ? [pid 3149] <... futex resumed>) = ? [pid 3149] +++ exited with 0 +++ [pid 3150] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3150] +++ exited with 0 +++ [pid 3148] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3148, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3151 ./strace-static-x86_64: Process 3151 attached [pid 3151] set_robust_list(0x5555564465e0, 24) = 0 [pid 3151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3151] setpgid(0, 0) = 0 [pid 3151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3151] write(3, "1000", 4) = 4 [pid 3151] close(3) = 0 [pid 3151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3151] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3151] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3151] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3152 attached , parent_tid=[3152], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3152 [pid 3152] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3152] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3152] <... futex resumed>) = 0 [pid 3151] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3152] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3152] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3152] <... futex resumed>) = 0 [pid 3152] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3151] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3152] <... mount resumed>) = 0 [pid 3152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3152] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3152] <... futex resumed>) = 0 [pid 3152] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3151] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3152] <... mount resumed>) = 0 [pid 3152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3152] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3151] <... futex resumed>) = 0 [pid 3151] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3152] <... futex resumed>) = 0 [pid 3152] umount2("./file0", MNT_DETACH [pid 3151] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3152] <... umount2 resumed>) = 0 [pid 3152] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3152] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3151] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3151] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3151] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3153 attached , parent_tid=[3153], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3153 [pid 3151] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3151] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3153] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3153] umount2("./file0", MNT_DETACH) = 0 [pid 3153] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3151] <... futex resumed>) = 0 [pid 3151] exit_group(0 [pid 3152] <... futex resumed>) = ? [pid 3151] <... exit_group resumed>) = ? [pid 3152] +++ exited with 0 +++ [pid 3153] +++ exited with 0 +++ [pid 3151] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3151, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3154 attached , child_tidptr=0x5555564465d0) = 3154 [pid 3154] set_robust_list(0x5555564465e0, 24) = 0 [pid 3154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3154] setpgid(0, 0) = 0 [pid 3154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3154] write(3, "1000", 4) = 4 [pid 3154] close(3) = 0 [pid 3154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3154] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3154] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3156 attached [pid 3156] set_robust_list(0x7fc84e09f9e0, 24 [pid 3154] <... clone resumed>, parent_tid=[3156], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3156 [pid 3156] <... set_robust_list resumed>) = 0 [pid 3154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3154] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3156] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3154] <... futex resumed>) = 0 [pid 3156] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3154] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3156] <... mount resumed>) = 0 [pid 3156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3154] <... futex resumed>) = 0 [pid 3156] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3154] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3156] <... mount resumed>) = 0 [pid 3156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3154] <... futex resumed>) = 0 [pid 3154] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3154] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3154] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3154] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3157], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3157 ./strace-static-x86_64: Process 3157 attached [pid 3154] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3157] set_robust_list(0x7fc84e07e9e0, 24 [pid 3154] <... futex resumed>) = 0 [pid 3157] <... set_robust_list resumed>) = 0 [pid 3157] umount2("./file0", MNT_DETACH [pid 3154] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3156] umount2("./file0", MNT_DETACH [pid 3157] <... umount2 resumed>) = 0 [pid 3157] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3154] <... futex resumed>) = 0 [pid 3157] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3156] <... umount2 resumed>) = 0 [pid 3156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3156] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3154] exit_group(0) = ? [pid 3156] <... futex resumed>) = ? [pid 3157] <... futex resumed>) = ? [pid 3156] +++ exited with 0 +++ [pid 3157] +++ exited with 0 +++ [pid 3154] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3154, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3158 ./strace-static-x86_64: Process 3158 attached [pid 3158] set_robust_list(0x5555564465e0, 24) = 0 [pid 3158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3158] setpgid(0, 0) = 0 [pid 3158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3158] write(3, "1000", 4) = 4 [pid 3158] close(3) = 0 [pid 3158] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3158] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3158] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3159 attached , parent_tid=[3159], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3159 [pid 3159] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3159] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3159] <... futex resumed>) = 0 [pid 3159] mkdir("./file0", 000 [pid 3158] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3159] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3158] <... futex resumed>) = 0 [pid 3158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3158] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3159] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3158] <... futex resumed>) = 0 [pid 3158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3158] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3159] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3158] <... futex resumed>) = 0 [pid 3158] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3158] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3158] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3158] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3159] umount2("./file0", MNT_DETACH [pid 3158] <... clone resumed>, parent_tid=[3160], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3160 [pid 3158] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3158] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3160 attached [pid 3160] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3160] umount2("./file0", MNT_DETACH) = 0 [pid 3160] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3158] <... futex resumed>) = 0 [pid 3160] <... futex resumed>) = 1 [pid 3160] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3159] <... umount2 resumed>) = 0 [pid 3159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3159] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3158] exit_group(0) = ? [pid 3160] <... futex resumed>) = ? [pid 3160] +++ exited with 0 +++ [pid 3159] <... futex resumed>) = ? [pid 3159] +++ exited with 0 +++ [pid 3158] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3158, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3161 ./strace-static-x86_64: Process 3161 attached [pid 3161] set_robust_list(0x5555564465e0, 24) = 0 [pid 3161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3161] setpgid(0, 0) = 0 [pid 3161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3161] write(3, "1000", 4) = 4 [pid 3161] close(3) = 0 [pid 3161] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3161] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3161] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3161] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3162 attached [pid 3162] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3161] <... clone resumed>, parent_tid=[3162], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3162 [pid 3161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3162] <... futex resumed>) = 0 [pid 3161] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3162] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3161] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3162] <... futex resumed>) = 0 [pid 3162] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3161] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3162] <... mount resumed>) = 0 [pid 3162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3161] <... futex resumed>) = 0 [pid 3161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3162] <... futex resumed>) = 0 [pid 3162] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3161] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3162] <... mount resumed>) = 0 [pid 3162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3161] <... futex resumed>) = 0 [pid 3161] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3162] <... futex resumed>) = 0 [pid 3161] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3162] umount2("./file0", MNT_DETACH [pid 3161] <... futex resumed>) = 0 [pid 3162] <... umount2 resumed>) = 0 [pid 3161] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3162] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3161] <... mmap resumed>) = 0x7fc84e05e000 [pid 3161] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3161] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3163 attached [pid 3163] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3163] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3161] <... clone resumed>, parent_tid=[3163], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3163 [pid 3161] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3163] <... futex resumed>) = 0 [pid 3161] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3163] umount2("./file0", MNT_DETACH) = 0 [pid 3163] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3161] <... futex resumed>) = 0 [pid 3161] exit_group(0) = ? [pid 3162] <... futex resumed>) = ? [pid 3162] +++ exited with 0 +++ [pid 3163] +++ exited with 0 +++ [pid 3161] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3161, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3164 ./strace-static-x86_64: Process 3164 attached [pid 3164] set_robust_list(0x5555564465e0, 24) = 0 [pid 3164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3164] setpgid(0, 0) = 0 [pid 3164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3164] write(3, "1000", 4) = 4 [pid 3164] close(3) = 0 [pid 3164] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3164] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3164] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3165 attached , parent_tid=[3165], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3165 [pid 3165] set_robust_list(0x7fc84e09f9e0, 24 [pid 3164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3165] <... set_robust_list resumed>) = 0 [pid 3164] <... futex resumed>) = 0 [pid 3164] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3165] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3164] <... futex resumed>) = 0 [pid 3165] <... futex resumed>) = 1 [pid 3164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3165] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3164] <... futex resumed>) = 0 [pid 3164] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3165] <... mount resumed>) = 0 [pid 3165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3164] <... futex resumed>) = 0 [pid 3164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3164] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3165] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3164] <... futex resumed>) = 0 [pid 3164] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3165] umount2("./file0", MNT_DETACH [pid 3164] <... futex resumed>) = 0 [pid 3164] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3164] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3165] <... umount2 resumed>) = 0 [pid 3164] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3166 attached [pid 3165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3165] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3164] <... clone resumed>, parent_tid=[3166], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3166 [pid 3164] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3164] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3166] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3166] umount2("./file0", MNT_DETACH) = 0 [pid 3166] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3164] <... futex resumed>) = 0 [pid 3164] exit_group(0 [pid 3165] <... futex resumed>) = ? [pid 3164] <... exit_group resumed>) = ? [pid 3165] +++ exited with 0 +++ [pid 3166] +++ exited with 0 +++ [pid 3164] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3164, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3167 attached , child_tidptr=0x5555564465d0) = 3167 [pid 3167] set_robust_list(0x5555564465e0, 24) = 0 [pid 3167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3167] setpgid(0, 0) = 0 [pid 3167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3167] write(3, "1000", 4) = 4 [pid 3167] close(3) = 0 [pid 3167] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3167] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3167] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3167] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3168 attached , parent_tid=[3168], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3168 [pid 3168] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3168] <... futex resumed>) = 0 [pid 3167] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3168] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3167] <... futex resumed>) = 0 [pid 3168] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3168] <... mount resumed>) = 0 [pid 3168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3167] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3168] <... futex resumed>) = 0 [pid 3167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3168] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3168] <... mount resumed>) = 0 [pid 3168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3167] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3168] <... futex resumed>) = 0 [pid 3167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3167] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3168] umount2("./file0", MNT_DETACH [pid 3167] <... futex resumed>) = 0 [pid 3167] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3168] <... umount2 resumed>) = 0 [pid 3167] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3167] <... mmap resumed>) = 0x7fc84e05e000 [pid 3168] <... futex resumed>) = 0 [pid 3167] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3168] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3167] <... mprotect resumed>) = 0 [pid 3167] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3169 attached , parent_tid=[3169], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3169 [pid 3169] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3169] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3167] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3169] <... futex resumed>) = 0 [pid 3169] umount2("./file0", MNT_DETACH [pid 3167] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3169] <... umount2 resumed>) = 0 [pid 3169] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3167] <... futex resumed>) = 0 [pid 3167] exit_group(0 [pid 3169] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3167] <... exit_group resumed>) = ? [pid 3169] <... futex resumed>) = ? [pid 3168] <... futex resumed>) = ? [pid 3168] +++ exited with 0 +++ [pid 3169] +++ exited with 0 +++ [pid 3167] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3167, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3170 ./strace-static-x86_64: Process 3170 attached [pid 3170] set_robust_list(0x5555564465e0, 24) = 0 [pid 3170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3170] setpgid(0, 0) = 0 [pid 3170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3170] write(3, "1000", 4) = 4 [pid 3170] close(3) = 0 [pid 3170] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3170] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3170] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3171 attached , parent_tid=[3171], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3171 [pid 3171] set_robust_list(0x7fc84e09f9e0, 24 [pid 3170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3171] <... set_robust_list resumed>) = 0 [pid 3170] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3171] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3170] <... futex resumed>) = 0 [pid 3171] <... futex resumed>) = 1 [pid 3170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3171] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3170] <... futex resumed>) = 0 [pid 3170] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3171] <... mount resumed>) = 0 [pid 3171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3170] <... futex resumed>) = 0 [pid 3171] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3170] <... futex resumed>) = 0 [pid 3171] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3170] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3171] <... mount resumed>) = 0 [pid 3171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3170] <... futex resumed>) = 0 [pid 3170] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3170] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3170] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3171] umount2("./file0", MNT_DETACH [pid 3170] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3172], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3172 [pid 3170] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3171] <... umount2 resumed>) = 0 [pid 3170] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3172 attached [pid 3171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3172] set_robust_list(0x7fc84e07e9e0, 24 [pid 3171] <... futex resumed>) = 0 [pid 3172] <... set_robust_list resumed>) = 0 [pid 3171] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3172] umount2("./file0", MNT_DETACH) = 0 [pid 3172] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3170] <... futex resumed>) = 0 [pid 3170] exit_group(0 [pid 3172] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3170] <... exit_group resumed>) = ? [pid 3171] <... futex resumed>) = ? [pid 3172] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3171] +++ exited with 0 +++ [pid 3172] +++ exited with 0 +++ [pid 3170] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3170, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3173 ./strace-static-x86_64: Process 3173 attached [pid 3173] set_robust_list(0x5555564465e0, 24) = 0 [pid 3173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3173] setpgid(0, 0) = 0 [pid 3173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3173] write(3, "1000", 4) = 4 [pid 3173] close(3) = 0 [pid 3173] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3173] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3173] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3173] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3174 attached , parent_tid=[3174], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3174 [pid 3174] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3174] <... futex resumed>) = 0 [pid 3174] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3174] <... futex resumed>) = 0 [pid 3174] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3173] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3174] <... mount resumed>) = 0 [pid 3174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] <... futex resumed>) = 0 [pid 3173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3174] <... futex resumed>) = 0 [pid 3174] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3173] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3174] <... mount resumed>) = 0 [pid 3174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] <... futex resumed>) = 0 [pid 3173] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3174] <... futex resumed>) = 0 [pid 3174] umount2("./file0", MNT_DETACH [pid 3173] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3174] <... umount2 resumed>) = 0 [pid 3174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3174] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3173] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3173] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3175 attached , parent_tid=[3175], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3175 [pid 3175] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3175] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3175] <... futex resumed>) = 0 [pid 3175] umount2("./file0", MNT_DETACH) = 0 [pid 3173] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3175] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3175] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3173] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3173] exit_group(0 [pid 3174] <... futex resumed>) = ? [pid 3173] <... exit_group resumed>) = ? [pid 3174] +++ exited with 0 +++ [pid 3175] <... futex resumed>) = ? [pid 3175] +++ exited with 0 +++ [pid 3173] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3173, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3176 ./strace-static-x86_64: Process 3176 attached [pid 3176] set_robust_list(0x5555564465e0, 24) = 0 [pid 3176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3176] setpgid(0, 0) = 0 [pid 3176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3176] write(3, "1000", 4) = 4 [pid 3176] close(3) = 0 [pid 3176] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3176] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3176] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3177 attached , parent_tid=[3177], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3177 [pid 3177] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3177] <... futex resumed>) = 0 [pid 3177] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3177] <... futex resumed>) = 0 [pid 3177] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3177] <... mount resumed>) = 0 [pid 3177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3177] <... futex resumed>) = 0 [pid 3177] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3177] <... mount resumed>) = 0 [pid 3177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3177] <... futex resumed>) = 0 [pid 3177] umount2("./file0", MNT_DETACH) = 0 [pid 3177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3176] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3177] <... futex resumed>) = 0 [pid 3177] umount2("./file0", MNT_DETACH) = 0 [pid 3177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3177] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3176] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3176] exit_group(0) = ? [pid 3177] <... futex resumed>) = ? [pid 3177] +++ exited with 0 +++ [pid 3176] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3176, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3178 attached , child_tidptr=0x5555564465d0) = 3178 [pid 3178] set_robust_list(0x5555564465e0, 24) = 0 [pid 3178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3178] setpgid(0, 0) = 0 [pid 3178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3178] write(3, "1000", 4) = 4 [pid 3178] close(3) = 0 [pid 3178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3178] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3178] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3179 attached , parent_tid=[3179], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3179 [pid 3179] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3179] <... futex resumed>) = 0 [pid 3179] mkdir("./file0", 000 [pid 3178] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3179] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3179] <... futex resumed>) = 0 [pid 3179] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3178] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3179] <... mount resumed>) = 0 [pid 3179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3179] <... futex resumed>) = 0 [pid 3179] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3178] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3179] <... mount resumed>) = 0 [pid 3179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] <... futex resumed>) = 0 [pid 3178] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3179] <... futex resumed>) = 0 [pid 3178] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3179] umount2("./file0", MNT_DETACH [pid 3178] <... futex resumed>) = 0 [pid 3179] <... umount2 resumed>) = 0 [pid 3179] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3179] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3178] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3178] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3180 attached [pid 3180] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3178] <... clone resumed>, parent_tid=[3180], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3180 [pid 3180] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3180] <... futex resumed>) = 0 [pid 3180] umount2("./file0", MNT_DETACH [pid 3178] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3180] <... umount2 resumed>) = 0 [pid 3180] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3180] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3178] exit_group(0) = ? [pid 3179] <... futex resumed>) = ? [pid 3179] +++ exited with 0 +++ [pid 3180] <... futex resumed>) = ? [pid 3180] +++ exited with 0 +++ [pid 3178] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3178, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3181 ./strace-static-x86_64: Process 3181 attached [pid 3181] set_robust_list(0x5555564465e0, 24) = 0 [pid 3181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3181] setpgid(0, 0) = 0 [pid 3181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3181] write(3, "1000", 4) = 4 [pid 3181] close(3) = 0 [pid 3181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3181] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3181] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3182 attached , parent_tid=[3182], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3182 [pid 3182] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3182] <... futex resumed>) = 0 [pid 3182] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3181] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3182] <... futex resumed>) = 0 [pid 3182] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3181] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3182] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3181] <... futex resumed>) = 0 [pid 3182] <... mount resumed>) = 0 [pid 3181] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3181] <... futex resumed>) = 0 [pid 3181] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3181] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3181] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3182] umount2("./file0", MNT_DETACH [pid 3181] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3183], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3183 [pid 3181] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3181] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3183 attached [pid 3183] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3183] umount2("./file0", MNT_DETACH) = 0 [pid 3183] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3181] <... futex resumed>) = 0 [pid 3183] <... futex resumed>) = 1 [pid 3183] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3182] <... umount2 resumed>) = 0 [pid 3182] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3182] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3181] exit_group(0) = ? [pid 3182] <... futex resumed>) = ? [pid 3182] +++ exited with 0 +++ [pid 3183] <... futex resumed>) = ? [pid 3183] +++ exited with 0 +++ [pid 3181] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3181, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3184 ./strace-static-x86_64: Process 3184 attached [pid 3184] set_robust_list(0x5555564465e0, 24) = 0 [pid 3184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3184] setpgid(0, 0) = 0 [pid 3184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3184] write(3, "1000", 4) = 4 [pid 3184] close(3) = 0 [pid 3184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3184] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3184] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3185], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3185 [pid 3184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3185 attached [pid 3185] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3185] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3184] <... futex resumed>) = 0 [pid 3184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3185] <... futex resumed>) = 1 [pid 3185] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3184] <... futex resumed>) = 0 [pid 3184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3185] <... futex resumed>) = 1 [pid 3185] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3184] <... futex resumed>) = 0 [pid 3184] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3184] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3184] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3186], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3186 [pid 3184] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3184] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3185] <... futex resumed>) = 1 [pid 3185] umount2("./file0", MNT_DETACH) = 0 [pid 3185] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3185] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3186 attached [pid 3186] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3186] umount2("./file0", MNT_DETACH) = 0 [pid 3186] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3184] <... futex resumed>) = 0 [pid 3184] exit_group(0) = ? [pid 3185] <... futex resumed>) = ? [pid 3186] <... futex resumed>) = ? [pid 3185] +++ exited with 0 +++ [pid 3186] +++ exited with 0 +++ [pid 3184] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3184, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3187 ./strace-static-x86_64: Process 3187 attached [pid 3187] set_robust_list(0x5555564465e0, 24) = 0 [pid 3187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3187] setpgid(0, 0) = 0 [pid 3187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3187] write(3, "1000", 4) = 4 [pid 3187] close(3) = 0 [pid 3187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3187] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3187] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3188 attached , parent_tid=[3188], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3188 [pid 3188] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3188] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3188] <... futex resumed>) = 0 [pid 3188] mkdir("./file0", 000 [pid 3187] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3188] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3188] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3188] <... futex resumed>) = 0 [pid 3188] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3187] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3188] <... mount resumed>) = 0 [pid 3188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3188] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] <... futex resumed>) = 0 [pid 3187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3188] <... futex resumed>) = 0 [pid 3188] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3187] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3188] <... mount resumed>) = 0 [pid 3188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3188] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] <... futex resumed>) = 0 [pid 3187] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3188] <... futex resumed>) = 0 [pid 3188] umount2("./file0", MNT_DETACH [pid 3187] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3187] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3188] <... umount2 resumed>) = 0 [pid 3188] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3188] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] <... mmap resumed>) = 0x7fc84e05e000 [pid 3187] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3187] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3189], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3189 ./strace-static-x86_64: Process 3189 attached [pid 3189] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3189] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3189] <... futex resumed>) = 0 [pid 3187] <... futex resumed>) = 1 [pid 3189] umount2("./file0", MNT_DETACH [pid 3187] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3189] <... umount2 resumed>) = 0 [pid 3189] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3187] <... futex resumed>) = 0 [pid 3189] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3187] exit_group(0 [pid 3189] <... futex resumed>) = ? [pid 3188] <... futex resumed>) = ? [pid 3187] <... exit_group resumed>) = ? [pid 3188] +++ exited with 0 +++ [pid 3189] +++ exited with 0 +++ [pid 3187] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3187, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3190 ./strace-static-x86_64: Process 3190 attached [pid 3190] set_robust_list(0x5555564465e0, 24) = 0 [pid 3190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3190] setpgid(0, 0) = 0 [pid 3190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3190] write(3, "1000", 4) = 4 [pid 3190] close(3) = 0 [pid 3190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3190] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3190] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3191], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3191 [pid 3190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3191 attached [pid 3191] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3191] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3190] <... futex resumed>) = 0 [pid 3190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3191] <... futex resumed>) = 1 [pid 3191] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3190] <... futex resumed>) = 0 [pid 3190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3191] <... futex resumed>) = 1 [pid 3191] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3190] <... futex resumed>) = 0 [pid 3190] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3191] <... futex resumed>) = 1 [pid 3190] <... mmap resumed>) = 0x7fc84e05e000 [pid 3191] umount2("./file0", MNT_DETACH [pid 3190] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3190] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3192], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3192 [pid 3190] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3190] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3191] <... umount2 resumed>) = 0 [pid 3191] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3191] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3192 attached [pid 3192] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3192] umount2("./file0", MNT_DETACH) = 0 [pid 3192] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3190] <... futex resumed>) = 0 [pid 3192] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3190] exit_group(0) = ? [pid 3191] <... futex resumed>) = ? [pid 3191] +++ exited with 0 +++ [pid 3192] <... futex resumed>) = ? [pid 3192] +++ exited with 0 +++ [pid 3190] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3190, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3193 ./strace-static-x86_64: Process 3193 attached [pid 3193] set_robust_list(0x5555564465e0, 24) = 0 [pid 3193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3193] setpgid(0, 0) = 0 [pid 3193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3193] write(3, "1000", 4) = 4 [pid 3193] close(3) = 0 [pid 3193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3193] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3193] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3194 attached , parent_tid=[3194], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3194 [pid 3194] set_robust_list(0x7fc84e09f9e0, 24 [pid 3193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3194] <... set_robust_list resumed>) = 0 [pid 3193] <... futex resumed>) = 0 [pid 3193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3194] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3193] <... futex resumed>) = 0 [pid 3194] <... futex resumed>) = 1 [pid 3193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3194] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3193] <... futex resumed>) = 0 [pid 3193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3194] <... mount resumed>) = 0 [pid 3194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3193] <... futex resumed>) = 0 [pid 3194] <... futex resumed>) = 1 [pid 3193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3194] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3193] <... futex resumed>) = 0 [pid 3193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3194] <... mount resumed>) = 0 [pid 3194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3193] <... futex resumed>) = 0 [pid 3194] <... futex resumed>) = 1 [pid 3193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3194] umount2("./file0", MNT_DETACH [pid 3193] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3193] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3193] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3194] <... umount2 resumed>) = 0 [pid 3194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3195 attached ) = 0 [pid 3193] <... clone resumed>, parent_tid=[3195], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3195 [pid 3195] set_robust_list(0x7fc84e07e9e0, 24 [pid 3193] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3194] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3193] <... futex resumed>) = 0 [pid 3193] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3195] <... set_robust_list resumed>) = 0 [pid 3195] umount2("./file0", MNT_DETACH) = 0 [pid 3195] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3193] <... futex resumed>) = 0 [pid 3193] exit_group(0) = ? [pid 3194] <... futex resumed>) = ? [pid 3194] +++ exited with 0 +++ [pid 3195] +++ exited with 0 +++ [pid 3193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3193, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3196 ./strace-static-x86_64: Process 3196 attached [pid 3196] set_robust_list(0x5555564465e0, 24) = 0 [pid 3196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3196] setpgid(0, 0) = 0 [pid 3196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3196] write(3, "1000", 4) = 4 [pid 3196] close(3) = 0 [pid 3196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3196] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3196] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3197], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3197 ./strace-static-x86_64: Process 3197 attached [pid 3197] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3197] <... futex resumed>) = 0 [pid 3197] mkdir("./file0", 000 [pid 3196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3197] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3197] <... futex resumed>) = 0 [pid 3196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3197] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3196] <... futex resumed>) = 0 [pid 3197] <... mount resumed>) = 0 [pid 3196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3197] <... futex resumed>) = 0 [pid 3197] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3197] <... mount resumed>) = 0 [pid 3197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3196] <... futex resumed>) = 0 [pid 3196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3196] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3196] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3197] umount2("./file0", MNT_DETACH [pid 3196] <... mprotect resumed>) = 0 [pid 3197] <... umount2 resumed>) = 0 [pid 3196] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3198 attached ) = 0 [pid 3196] <... clone resumed>, parent_tid=[3198], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3198 [pid 3196] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3196] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3198] set_robust_list(0x7fc84e07e9e0, 24 [pid 3197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3198] <... set_robust_list resumed>) = 0 [pid 3198] umount2("./file0", MNT_DETACH) = 0 [pid 3198] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3196] <... futex resumed>) = 0 [pid 3196] exit_group(0) = ? [pid 3197] <... futex resumed>) = ? [pid 3197] +++ exited with 0 +++ [pid 3198] +++ exited with 0 +++ [pid 3196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3196, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3199 ./strace-static-x86_64: Process 3199 attached [pid 3199] set_robust_list(0x5555564465e0, 24) = 0 [pid 3199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3199] setpgid(0, 0) = 0 [pid 3199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3199] write(3, "1000", 4) = 4 [pid 3199] close(3) = 0 [pid 3199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3199] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3199] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3200 attached [pid 3200] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] <... clone resumed>, parent_tid=[3200], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3200 [pid 3199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3200] <... futex resumed>) = 0 [pid 3200] mkdir("./file0", 000 [pid 3199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3200] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3200] <... futex resumed>) = 0 [pid 3200] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3200] <... mount resumed>) = 0 [pid 3200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] <... futex resumed>) = 0 [pid 3199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3200] <... futex resumed>) = 0 [pid 3200] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3200] <... mount resumed>) = 0 [pid 3200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] <... futex resumed>) = 0 [pid 3199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3200] <... futex resumed>) = 0 [pid 3200] umount2("./file0", MNT_DETACH [pid 3199] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3200] <... umount2 resumed>) = 0 [pid 3199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] <... mmap resumed>) = 0x7fc84e05e000 [pid 3199] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3199] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3201 attached , parent_tid=[3201], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3201 [pid 3201] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3201] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3201] <... futex resumed>) = 0 [pid 3201] umount2("./file0", MNT_DETACH [pid 3199] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3201] <... umount2 resumed>) = 0 [pid 3201] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3201] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3199] <... futex resumed>) = 0 [pid 3199] exit_group(0 [pid 3200] <... futex resumed>) = ? [pid 3199] <... exit_group resumed>) = ? [pid 3200] +++ exited with 0 +++ [pid 3201] <... futex resumed>) = ? [pid 3201] +++ exited with 0 +++ [pid 3199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3199, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3202 ./strace-static-x86_64: Process 3202 attached [pid 3202] set_robust_list(0x5555564465e0, 24) = 0 [pid 3202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3202] setpgid(0, 0) = 0 [pid 3202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3202] write(3, "1000", 4) = 4 [pid 3202] close(3) = 0 [pid 3202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3202] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3202] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3203 attached [pid 3203] set_robust_list(0x7fc84e09f9e0, 24 [pid 3202] <... clone resumed>, parent_tid=[3203], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3203 [pid 3203] <... set_robust_list resumed>) = 0 [pid 3203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3203] <... futex resumed>) = 0 [pid 3203] mkdir("./file0", 000 [pid 3202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3203] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3202] <... futex resumed>) = 0 [pid 3202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3203] <... futex resumed>) = 0 [pid 3203] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3203] <... futex resumed>) = 0 [pid 3202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3202] <... futex resumed>) = 0 [pid 3203] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3203] <... mount resumed>) = 0 [pid 3203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3202] <... futex resumed>) = 0 [pid 3202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3203] <... futex resumed>) = 0 [pid 3203] umount2("./file0", MNT_DETACH [pid 3202] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3203] <... umount2 resumed>) = 0 [pid 3202] <... futex resumed>) = 0 [pid 3203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3202] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3202] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3204 attached , parent_tid=[3204], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3204 [pid 3204] set_robust_list(0x7fc84e07e9e0, 24 [pid 3202] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3204] <... set_robust_list resumed>) = 0 [pid 3204] umount2("./file0", MNT_DETACH [pid 3202] <... futex resumed>) = 0 [pid 3202] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3204] <... umount2 resumed>) = 0 [pid 3204] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3202] <... futex resumed>) = 0 [pid 3204] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3202] exit_group(0 [pid 3203] <... futex resumed>) = ? [pid 3202] <... exit_group resumed>) = ? [pid 3203] +++ exited with 0 +++ [pid 3204] <... futex resumed>) = ? [pid 3204] +++ exited with 0 +++ [pid 3202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3202, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3205 ./strace-static-x86_64: Process 3205 attached [pid 3205] set_robust_list(0x5555564465e0, 24) = 0 [pid 3205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3205] setpgid(0, 0) = 0 [pid 3205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3205] write(3, "1000", 4) = 4 [pid 3205] close(3) = 0 [pid 3205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3205] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3205] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3206 attached , parent_tid=[3206], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3206 [pid 3206] set_robust_list(0x7fc84e09f9e0, 24 [pid 3205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3206] <... set_robust_list resumed>) = 0 [pid 3205] <... futex resumed>) = 0 [pid 3206] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3206] <... futex resumed>) = 0 [pid 3205] <... futex resumed>) = 1 [pid 3206] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3206] <... mount resumed>) = 0 [pid 3206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3205] <... futex resumed>) = 0 [pid 3205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3206] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3205] <... futex resumed>) = 0 [pid 3205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3205] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3205] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3206] umount2("./file0", MNT_DETACH [pid 3205] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3207], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3207 [pid 3205] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3205] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3207 attached [pid 3207] set_robust_list(0x7fc84e07e9e0, 24 [pid 3206] <... umount2 resumed>) = 0 [pid 3207] <... set_robust_list resumed>) = 0 [pid 3207] umount2("./file0", MNT_DETACH [pid 3206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3207] <... umount2 resumed>) = 0 [pid 3207] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3205] <... futex resumed>) = 0 [pid 3205] exit_group(0) = ? [pid 3206] <... futex resumed>) = ? [pid 3207] <... futex resumed>) = ? [pid 3206] +++ exited with 0 +++ [pid 3207] +++ exited with 0 +++ [pid 3205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3205, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3208 ./strace-static-x86_64: Process 3208 attached [pid 3208] set_robust_list(0x5555564465e0, 24) = 0 [pid 3208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3208] setpgid(0, 0) = 0 [pid 3208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3208] write(3, "1000", 4) = 4 [pid 3208] close(3) = 0 [pid 3208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3208] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3208] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3209], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3209 [pid 3208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3209 attached [pid 3209] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3209] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3208] <... futex resumed>) = 0 [pid 3208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3209] <... futex resumed>) = 1 [pid 3209] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3208] <... futex resumed>) = 0 [pid 3209] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3209] <... mount resumed>) = 0 [pid 3209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3208] <... futex resumed>) = 0 [pid 3209] umount2("./file0", MNT_DETACH [pid 3208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3208] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3208] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3208] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3209] <... umount2 resumed>) = 0 [pid 3208] <... clone resumed>, parent_tid=[3210], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3210 [pid 3209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3208] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3209] <... futex resumed>) = 0 [pid 3208] <... futex resumed>) = 0 [pid 3209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3208] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3210 attached [pid 3210] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3210] umount2("./file0", MNT_DETACH) = 0 [pid 3210] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3208] <... futex resumed>) = 0 [pid 3208] exit_group(0 [pid 3209] <... futex resumed>) = ? [pid 3208] <... exit_group resumed>) = ? [pid 3209] +++ exited with 0 +++ [pid 3210] +++ exited with 0 +++ [pid 3208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3208, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3211 ./strace-static-x86_64: Process 3211 attached [pid 3211] set_robust_list(0x5555564465e0, 24) = 0 [pid 3211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3211] setpgid(0, 0) = 0 [pid 3211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3211] write(3, "1000", 4) = 4 [pid 3211] close(3) = 0 [pid 3211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3211] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3211] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3212 attached [pid 3212] set_robust_list(0x7fc84e09f9e0, 24 [pid 3211] <... clone resumed>, parent_tid=[3212], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3212 [pid 3212] <... set_robust_list resumed>) = 0 [pid 3211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3212] mkdir("./file0", 000 [pid 3211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3212] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3211] <... futex resumed>) = 0 [pid 3211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3212] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3211] <... futex resumed>) = 0 [pid 3211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3212] <... mount resumed>) = 0 [pid 3212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3211] <... futex resumed>) = 0 [pid 3211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3212] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3211] <... futex resumed>) = 0 [pid 3211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3211] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3212] umount2("./file0", MNT_DETACH [pid 3211] <... mmap resumed>) = 0x7fc84e05e000 [pid 3211] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3211] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3213 attached , parent_tid=[3213], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3213 [pid 3213] set_robust_list(0x7fc84e07e9e0, 24 [pid 3211] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3213] <... set_robust_list resumed>) = 0 [pid 3211] <... futex resumed>) = 0 [pid 3213] umount2("./file0", MNT_DETACH [pid 3211] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3212] <... umount2 resumed>) = 0 [pid 3212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3212] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3213] <... umount2 resumed>) = 0 [pid 3213] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3211] <... futex resumed>) = 0 [pid 3213] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3211] exit_group(0) = ? [pid 3213] <... futex resumed>) = ? [pid 3213] +++ exited with 0 +++ [pid 3212] <... futex resumed>) = ? [pid 3212] +++ exited with 0 +++ [pid 3211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3211, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3214 ./strace-static-x86_64: Process 3214 attached [pid 3214] set_robust_list(0x5555564465e0, 24) = 0 [pid 3214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3214] setpgid(0, 0) = 0 [pid 3214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3214] write(3, "1000", 4) = 4 [pid 3214] close(3) = 0 [pid 3214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3214] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3214] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3215 attached , parent_tid=[3215], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3215 [pid 3215] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3215] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3215] <... futex resumed>) = 0 [pid 3214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3215] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3214] <... futex resumed>) = 0 [pid 3214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3215] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3214] <... futex resumed>) = 0 [pid 3214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3215] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3214] <... futex resumed>) = 0 [pid 3215] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3215] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3214] <... futex resumed>) = 0 [pid 3215] umount2("./file0", MNT_DETACH [pid 3214] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3215] <... umount2 resumed>) = 0 [pid 3214] <... mmap resumed>) = 0x7fc84e05e000 [pid 3215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3214] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3215] <... futex resumed>) = 0 [pid 3214] <... mprotect resumed>) = 0 [pid 3215] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3214] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3216 attached , parent_tid=[3216], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3216 [pid 3216] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3216] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3214] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3216] <... futex resumed>) = 0 [pid 3216] umount2("./file0", MNT_DETACH [pid 3214] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3216] <... umount2 resumed>) = 0 [pid 3216] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3216] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3214] <... futex resumed>) = 0 [pid 3214] exit_group(0) = ? [pid 3215] <... futex resumed>) = ? [pid 3215] +++ exited with 0 +++ [pid 3216] <... futex resumed>) = ? [pid 3216] +++ exited with 0 +++ [pid 3214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3214, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3217 ./strace-static-x86_64: Process 3217 attached [pid 3217] set_robust_list(0x5555564465e0, 24) = 0 [pid 3217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3217] setpgid(0, 0) = 0 [pid 3217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3217] write(3, "1000", 4) = 4 [pid 3217] close(3) = 0 [pid 3217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3217] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3217] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3218 attached , parent_tid=[3218], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3218 [pid 3217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3218] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3218] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3217] <... futex resumed>) = 0 [pid 3217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3218] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3217] <... futex resumed>) = 0 [pid 3217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3218] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3217] <... futex resumed>) = 0 [pid 3217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3218] <... mount resumed>) = 0 [pid 3218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3217] <... futex resumed>) = 0 [pid 3217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3218] umount2("./file0", MNT_DETACH [pid 3217] <... futex resumed>) = 0 [pid 3217] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3217] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3217] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3218] <... umount2 resumed>) = 0 [pid 3217] <... clone resumed>, parent_tid=[3219], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3219 [pid 3217] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3217] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3219 attached [pid 3219] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3219] umount2("./file0", MNT_DETACH [pid 3218] <... futex resumed>) = 0 [pid 3219] <... umount2 resumed>) = 0 [pid 3219] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3217] <... futex resumed>) = 0 [pid 3218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3217] exit_group(0) = ? [pid 3218] <... futex resumed>) = ? [pid 3219] <... futex resumed>) = ? [pid 3219] +++ exited with 0 +++ [pid 3218] +++ exited with 0 +++ [pid 3217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3217, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3220 ./strace-static-x86_64: Process 3220 attached [pid 3220] set_robust_list(0x5555564465e0, 24) = 0 [pid 3220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3220] setpgid(0, 0) = 0 [pid 3220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3220] write(3, "1000", 4) = 4 [pid 3220] close(3) = 0 [pid 3220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3220] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3220] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3221], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3221 ./strace-static-x86_64: Process 3221 attached [pid 3220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3221] set_robust_list(0x7fc84e09f9e0, 24 [pid 3220] <... futex resumed>) = 0 [pid 3220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3221] <... set_robust_list resumed>) = 0 [pid 3221] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3220] <... futex resumed>) = 0 [pid 3221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3221] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3220] <... futex resumed>) = 0 [pid 3221] <... mount resumed>) = 0 [pid 3220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3220] <... futex resumed>) = 0 [pid 3220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3221] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3221] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3220] <... futex resumed>) = 0 [pid 3220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3220] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3220] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3220] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3221] umount2("./file0", MNT_DETACH [pid 3220] <... clone resumed>, parent_tid=[3222], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3222 [pid 3220] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3220] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3222 attached [pid 3222] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3222] umount2("./file0", MNT_DETACH) = 0 [pid 3222] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3220] <... futex resumed>) = 0 [pid 3222] <... futex resumed>) = 1 [pid 3222] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3221] <... umount2 resumed>) = 0 [pid 3221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3220] exit_group(0) = ? [pid 3221] <... futex resumed>) = ? [pid 3222] <... futex resumed>) = ? [pid 3222] +++ exited with 0 +++ [pid 3221] +++ exited with 0 +++ [pid 3220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3220, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3223 attached , child_tidptr=0x5555564465d0) = 3223 [pid 3223] set_robust_list(0x5555564465e0, 24) = 0 [pid 3223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3223] setpgid(0, 0) = 0 [pid 3223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3223] write(3, "1000", 4) = 4 [pid 3223] close(3) = 0 [pid 3223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3223] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3223] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3224], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3224 [pid 3223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3224 attached [pid 3224] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3224] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3223] <... futex resumed>) = 0 [pid 3223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3224] <... futex resumed>) = 1 [pid 3224] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3223] <... futex resumed>) = 0 [pid 3223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3224] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3223] <... futex resumed>) = 0 [pid 3223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3223] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3223] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3225], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3225 [pid 3224] umount2("./file0", MNT_DETACH [pid 3223] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3223] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3225 attached [pid 3225] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3225] umount2("./file0", MNT_DETACH [pid 3224] <... umount2 resumed>) = 0 [pid 3225] <... umount2 resumed>) = 0 [pid 3224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3225] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3224] <... futex resumed>) = 0 [pid 3225] <... futex resumed>) = 1 [pid 3224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3223] <... futex resumed>) = 0 [pid 3223] exit_group(0) = ? [pid 3224] <... futex resumed>) = ? [pid 3225] +++ exited with 0 +++ [pid 3224] +++ exited with 0 +++ [pid 3223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3223, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3226 attached , child_tidptr=0x5555564465d0) = 3226 [pid 3226] set_robust_list(0x5555564465e0, 24) = 0 [pid 3226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3226] setpgid(0, 0) = 0 [pid 3226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3226] write(3, "1000", 4) = 4 [pid 3226] close(3) = 0 [pid 3226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3226] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3226] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3227], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3227 [pid 3226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3227 attached [pid 3227] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3227] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3226] <... futex resumed>) = 0 [pid 3226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3227] <... futex resumed>) = 1 [pid 3226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3227] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3226] <... futex resumed>) = 0 [pid 3226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3227] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3226] <... futex resumed>) = 0 [pid 3226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3227] <... mount resumed>) = 0 [pid 3227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3226] <... futex resumed>) = 0 [pid 3226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3226] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3226] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3226] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3227] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3228 attached [pid 3226] <... clone resumed>, parent_tid=[3228], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3228 [pid 3226] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3227] <... umount2 resumed>) = 0 [pid 3226] <... futex resumed>) = 0 [pid 3226] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3228] set_robust_list(0x7fc84e07e9e0, 24 [pid 3227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3228] <... set_robust_list resumed>) = 0 [pid 3227] <... futex resumed>) = 0 [pid 3228] umount2("./file0", MNT_DETACH [pid 3227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3228] <... umount2 resumed>) = 0 [pid 3228] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3226] <... futex resumed>) = 0 [pid 3226] exit_group(0 [pid 3228] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 3226] <... exit_group resumed>) = ? [pid 3227] <... futex resumed>) = ? [pid 3227] +++ exited with 0 +++ [pid 3228] +++ exited with 0 +++ [pid 3226] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3226, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3229 ./strace-static-x86_64: Process 3229 attached [pid 3229] set_robust_list(0x5555564465e0, 24) = 0 [pid 3229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3229] setpgid(0, 0) = 0 [pid 3229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3229] write(3, "1000", 4) = 4 [pid 3229] close(3) = 0 [pid 3229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3229] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3229] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3230], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3230 [pid 3229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3229] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3230 attached [pid 3230] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3230] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3229] <... futex resumed>) = 0 [pid 3229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3229] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3230] <... futex resumed>) = 1 [pid 3230] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3229] <... futex resumed>) = 0 [pid 3230] <... futex resumed>) = 1 [pid 3229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3230] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3229] <... futex resumed>) = 0 [pid 3229] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3230] <... mount resumed>) = 0 [pid 3230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3229] <... futex resumed>) = 0 [pid 3229] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3229] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3229] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3229] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3229] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3231 attached , parent_tid=[3231], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3231 [pid 3231] set_robust_list(0x7fc84e07e9e0, 24 [pid 3229] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3231] <... set_robust_list resumed>) = 0 [pid 3229] <... futex resumed>) = 0 [pid 3231] umount2("./file0", MNT_DETACH [pid 3229] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3230] umount2("./file0", MNT_DETACH [pid 3231] <... umount2 resumed>) = 0 [pid 3231] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3229] <... futex resumed>) = 0 [pid 3231] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3230] <... umount2 resumed>) = 0 [pid 3230] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3230] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3229] exit_group(0) = ? [pid 3230] <... futex resumed>) = ? [pid 3230] +++ exited with 0 +++ [pid 3231] <... futex resumed>) = ? [pid 3231] +++ exited with 0 +++ [pid 3229] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3229, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3232 ./strace-static-x86_64: Process 3232 attached [pid 3232] set_robust_list(0x5555564465e0, 24) = 0 [pid 3232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3232] setpgid(0, 0) = 0 [pid 3232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3232] write(3, "1000", 4) = 4 [pid 3232] close(3) = 0 [pid 3232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3232] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3232] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3233], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3233 [pid 3232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3232] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3233 attached [pid 3233] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3233] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3232] <... futex resumed>) = 0 [pid 3232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3232] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3233] <... futex resumed>) = 1 [pid 3233] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3232] <... futex resumed>) = 0 [pid 3233] <... futex resumed>) = 1 [pid 3232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3233] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3232] <... futex resumed>) = 0 [pid 3232] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3233] <... mount resumed>) = 0 [pid 3233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3232] <... futex resumed>) = 0 [pid 3233] <... futex resumed>) = 1 [pid 3232] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3233] umount2("./file0", MNT_DETACH [pid 3232] <... futex resumed>) = 0 [pid 3232] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3232] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3233] <... umount2 resumed>) = 0 [pid 3232] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3233] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3234 attached [pid 3233] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3232] <... clone resumed>, parent_tid=[3234], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3234 [pid 3234] set_robust_list(0x7fc84e07e9e0, 24 [pid 3232] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3234] <... set_robust_list resumed>) = 0 [pid 3232] <... futex resumed>) = 0 [pid 3234] umount2("./file0", MNT_DETACH [pid 3232] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3234] <... umount2 resumed>) = 0 [pid 3234] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3232] <... futex resumed>) = 0 [pid 3232] exit_group(0) = ? [pid 3233] <... futex resumed>) = ? [pid 3233] +++ exited with 0 +++ [pid 3234] <... futex resumed>) = ? [pid 3234] +++ exited with 0 +++ [pid 3232] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3232, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3235 ./strace-static-x86_64: Process 3235 attached [pid 3235] set_robust_list(0x5555564465e0, 24) = 0 [pid 3235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3235] setpgid(0, 0) = 0 [pid 3235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3235] write(3, "1000", 4) = 4 [pid 3235] close(3) = 0 [pid 3235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3235] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3235] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3236], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3236 [pid 3235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3236 attached [pid 3236] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3236] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3235] <... futex resumed>) = 0 [pid 3236] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3236] <... mount resumed>) = 0 [pid 3236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3235] <... futex resumed>) = 0 [pid 3235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3236] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3235] <... futex resumed>) = 0 [pid 3235] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3235] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3235] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3236] umount2("./file0", MNT_DETACH [pid 3235] <... clone resumed>, parent_tid=[3237], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3237 [pid 3235] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3235] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3237 attached [pid 3237] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3237] umount2("./file0", MNT_DETACH) = 0 [pid 3237] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3235] <... futex resumed>) = 0 [pid 3237] <... futex resumed>) = 1 [pid 3237] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3236] <... umount2 resumed>) = 0 [pid 3236] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3236] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3235] exit_group(0) = ? [pid 3237] <... futex resumed>) = ? [pid 3236] <... futex resumed>) = ? [pid 3236] +++ exited with 0 +++ [pid 3237] +++ exited with 0 +++ [pid 3235] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3235, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3238 attached , child_tidptr=0x5555564465d0) = 3238 [pid 3238] set_robust_list(0x5555564465e0, 24) = 0 [pid 3238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3238] setpgid(0, 0) = 0 [pid 3238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3238] write(3, "1000", 4) = 4 [pid 3238] close(3) = 0 [pid 3238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3238] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3238] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3239 attached [pid 3239] set_robust_list(0x7fc84e09f9e0, 24 [pid 3238] <... clone resumed>, parent_tid=[3239], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3239 [pid 3239] <... set_robust_list resumed>) = 0 [pid 3238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3239] mkdir("./file0", 000 [pid 3238] <... futex resumed>) = 0 [pid 3239] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3238] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3238] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3239] <... futex resumed>) = 0 [pid 3238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3239] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3238] <... futex resumed>) = 0 [pid 3238] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3239] <... mount resumed>) = 0 [pid 3239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3238] <... futex resumed>) = 0 [pid 3238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3238] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3239] <... futex resumed>) = 1 [pid 3239] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3238] <... futex resumed>) = 0 [pid 3238] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3238] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3238] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3238] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3240], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3240 [pid 3238] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3238] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3239] <... futex resumed>) = 1 [pid 3239] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3240 attached ) = 0 [pid 3239] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3239] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3240] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3240] umount2("./file0", MNT_DETACH) = 0 [pid 3240] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3238] <... futex resumed>) = 0 [pid 3240] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3238] exit_group(0 [pid 3240] <... futex resumed>) = ? [pid 3239] <... futex resumed>) = ? [pid 3238] <... exit_group resumed>) = ? [pid 3239] +++ exited with 0 +++ [pid 3240] +++ exited with 0 +++ [pid 3238] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3238, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3241 ./strace-static-x86_64: Process 3241 attached [pid 3241] set_robust_list(0x5555564465e0, 24) = 0 [pid 3241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3241] setpgid(0, 0) = 0 [pid 3241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3241] write(3, "1000", 4) = 4 [pid 3241] close(3) = 0 [pid 3241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3241] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3241] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3242 attached , parent_tid=[3242], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3242 [pid 3242] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3242] <... futex resumed>) = 0 [pid 3242] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3242] <... futex resumed>) = 0 [pid 3242] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3242] <... futex resumed>) = 0 [pid 3241] <... futex resumed>) = 1 [pid 3242] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3241] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3241] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3242] <... futex resumed>) = 0 [pid 3241] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3242] umount2("./file0", MNT_DETACH) = 0 [pid 3241] <... futex resumed>) = 0 [pid 3242] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3242] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3241] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3241] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3243 attached , parent_tid=[3243], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3243 [pid 3243] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3243] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3243] <... futex resumed>) = 0 [pid 3243] umount2("./file0", MNT_DETACH [pid 3241] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3243] <... umount2 resumed>) = 0 [pid 3243] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3243] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3241] exit_group(0 [pid 3242] <... futex resumed>) = ? [pid 3242] +++ exited with 0 +++ [pid 3243] <... futex resumed>) = ? [pid 3243] +++ exited with 0 +++ [pid 3241] <... exit_group resumed>) = ? [pid 3241] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3241, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3244 ./strace-static-x86_64: Process 3244 attached [pid 3244] set_robust_list(0x5555564465e0, 24) = 0 [pid 3244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3244] setpgid(0, 0) = 0 [pid 3244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3244] write(3, "1000", 4) = 4 [pid 3244] close(3) = 0 [pid 3244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3244] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3244] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3245 attached , parent_tid=[3245], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3245 [pid 3245] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3245] <... futex resumed>) = 0 [pid 3244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3245] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3244] <... futex resumed>) = 0 [pid 3245] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3245] <... mount resumed>) = 0 [pid 3244] <... futex resumed>) = 0 [pid 3245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3245] <... futex resumed>) = 0 [pid 3244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3245] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3245] <... mount resumed>) = 0 [pid 3245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3244] <... futex resumed>) = 0 [pid 3245] umount2("./file0", MNT_DETACH [pid 3244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3245] <... umount2 resumed>) = 0 [pid 3245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3245] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3244] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3245] <... futex resumed>) = 0 [pid 3245] umount2("./file0", MNT_DETACH) = 0 [pid 3244] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3245] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3244] <... futex resumed>) = 0 [pid 3244] exit_group(0) = ? [pid 3245] +++ exited with 0 +++ [pid 3244] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3244, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3246 ./strace-static-x86_64: Process 3246 attached [pid 3246] set_robust_list(0x5555564465e0, 24) = 0 [pid 3246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3246] setpgid(0, 0) = 0 [pid 3246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3246] write(3, "1000", 4) = 4 [pid 3246] close(3) = 0 [pid 3246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3246] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3246] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3247], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3247 [pid 3246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3247 attached [pid 3247] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3247] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3246] <... futex resumed>) = 0 [pid 3246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3247] <... futex resumed>) = 1 [pid 3247] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3246] <... futex resumed>) = 0 [pid 3246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3247] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3246] <... futex resumed>) = 0 [pid 3247] umount2("./file0", MNT_DETACH [pid 3246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3246] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3246] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3248], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3248 [pid 3246] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3246] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3248 attached [pid 3248] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3248] umount2("./file0", MNT_DETACH [pid 3247] <... umount2 resumed>) = 0 [pid 3247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3248] <... umount2 resumed>) = 0 [pid 3248] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3246] <... futex resumed>) = 0 [pid 3246] exit_group(0 [pid 3247] <... futex resumed>) = 0 [pid 3246] <... exit_group resumed>) = ? [pid 3247] +++ exited with 0 +++ [pid 3248] <... futex resumed>) = ? [pid 3248] +++ exited with 0 +++ [pid 3246] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3249 ./strace-static-x86_64: Process 3249 attached [pid 3249] set_robust_list(0x5555564465e0, 24) = 0 [pid 3249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3249] setpgid(0, 0) = 0 [pid 3249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3249] write(3, "1000", 4) = 4 [pid 3249] close(3) = 0 [pid 3249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3249] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3249] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3250], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3250 [pid 3249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3250 attached [pid 3250] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3250] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3249] <... futex resumed>) = 0 [pid 3249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3250] <... futex resumed>) = 1 [pid 3250] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3249] <... futex resumed>) = 0 [pid 3249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3250] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3249] <... futex resumed>) = 0 [pid 3249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3250] <... mount resumed>) = 0 [pid 3250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3249] <... futex resumed>) = 0 [pid 3249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3249] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3250] umount2("./file0", MNT_DETACH [pid 3249] <... futex resumed>) = 0 [pid 3249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3249] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3249] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3250] <... umount2 resumed>) = 0 [pid 3249] <... clone resumed>, parent_tid=[3251], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3251 [pid 3249] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3249] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3251 attached [pid 3250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3251] set_robust_list(0x7fc84e07e9e0, 24 [pid 3250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3251] <... set_robust_list resumed>) = 0 [pid 3251] umount2("./file0", MNT_DETACH) = 0 [pid 3251] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3249] <... futex resumed>) = 0 [pid 3249] exit_group(0) = ? [pid 3250] <... futex resumed>) = ? [pid 3250] +++ exited with 0 +++ [pid 3251] +++ exited with 0 +++ [pid 3249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3252 attached , child_tidptr=0x5555564465d0) = 3252 [pid 3252] set_robust_list(0x5555564465e0, 24) = 0 [pid 3252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3252] setpgid(0, 0) = 0 [pid 3252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3252] write(3, "1000", 4) = 4 [pid 3252] close(3) = 0 [pid 3252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3252] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3252] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3253 attached [pid 3253] set_robust_list(0x7fc84e09f9e0, 24 [pid 3252] <... clone resumed>, parent_tid=[3253], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3253 [pid 3252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3253] <... set_robust_list resumed>) = 0 [pid 3252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3253] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3252] <... futex resumed>) = 0 [pid 3253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3253] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3252] <... futex resumed>) = 0 [pid 3252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3253] <... mount resumed>) = 0 [pid 3253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3252] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3253] <... futex resumed>) = 0 [pid 3252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3253] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3252] <... futex resumed>) = 0 [pid 3253] umount2("./file0", MNT_DETACH [pid 3252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3253] <... umount2 resumed>) = 0 [pid 3252] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3252] <... futex resumed>) = 0 [pid 3253] <... futex resumed>) = 0 [pid 3252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3252] <... mmap resumed>) = 0x7fc84e05e000 [pid 3252] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3252] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3254 attached , parent_tid=[3254], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3254 [pid 3254] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3254] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3252] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3254] <... futex resumed>) = 0 [pid 3254] umount2("./file0", MNT_DETACH [pid 3252] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3254] <... umount2 resumed>) = 0 [pid 3254] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3254] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3252] <... futex resumed>) = 0 [pid 3252] exit_group(0 [pid 3254] <... futex resumed>) = ? [pid 3253] <... futex resumed>) = ? [pid 3254] +++ exited with 0 +++ [pid 3253] +++ exited with 0 +++ [pid 3252] <... exit_group resumed>) = ? [pid 3252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3255 ./strace-static-x86_64: Process 3255 attached [pid 3255] set_robust_list(0x5555564465e0, 24) = 0 [pid 3255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3255] setpgid(0, 0) = 0 [pid 3255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3255] write(3, "1000", 4) = 4 [pid 3255] close(3) = 0 [pid 3255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3255] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3255] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3256 attached [pid 3256] set_robust_list(0x7fc84e09f9e0, 24 [pid 3255] <... clone resumed>, parent_tid=[3256], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3256 [pid 3256] <... set_robust_list resumed>) = 0 [pid 3255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3256] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3255] <... futex resumed>) = 0 [pid 3255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3256] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3255] <... futex resumed>) = 0 [pid 3255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3256] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3255] <... futex resumed>) = 0 [pid 3255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3255] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3255] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3255] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3256] <... futex resumed>) = 0 [pid 3256] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3257 attached ) = 0 [pid 3256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3255] <... clone resumed>, parent_tid=[3257], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3257 [pid 3257] set_robust_list(0x7fc84e07e9e0, 24 [pid 3256] <... futex resumed>) = 0 [pid 3257] <... set_robust_list resumed>) = 0 [pid 3255] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3257] umount2("./file0", MNT_DETACH [pid 3255] <... futex resumed>) = 0 [pid 3255] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3257] <... umount2 resumed>) = 0 [pid 3257] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3255] <... futex resumed>) = 0 [pid 3257] <... futex resumed>) = 1 [pid 3255] exit_group(0 [pid 3257] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3255] <... exit_group resumed>) = ? [pid 3256] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3257] <... futex resumed>) = ? [pid 3256] +++ exited with 0 +++ [pid 3257] +++ exited with 0 +++ [pid 3255] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3258 ./strace-static-x86_64: Process 3258 attached [pid 3258] set_robust_list(0x5555564465e0, 24) = 0 [pid 3258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3258] setpgid(0, 0) = 0 [pid 3258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3258] write(3, "1000", 4) = 4 [pid 3258] close(3) = 0 [pid 3258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3258] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3258] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3259], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3259 [pid 3258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3259 attached [pid 3259] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3259] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3258] <... futex resumed>) = 0 [pid 3258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3259] <... futex resumed>) = 1 [pid 3259] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3258] <... futex resumed>) = 0 [pid 3259] <... futex resumed>) = 1 [pid 3258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3259] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3258] <... futex resumed>) = 0 [pid 3258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3259] <... mount resumed>) = 0 [pid 3259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3258] <... futex resumed>) = 0 [pid 3259] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3258] <... futex resumed>) = 0 [pid 3259] umount2("./file0", MNT_DETACH [pid 3258] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3258] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3259] <... umount2 resumed>) = 0 [pid 3258] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3260 attached [pid 3259] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3258] <... clone resumed>, parent_tid=[3260], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3260 [pid 3260] set_robust_list(0x7fc84e07e9e0, 24 [pid 3258] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3260] <... set_robust_list resumed>) = 0 [pid 3258] <... futex resumed>) = 0 [pid 3260] umount2("./file0", MNT_DETACH [pid 3258] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3260] <... umount2 resumed>) = 0 [pid 3260] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3258] <... futex resumed>) = 0 [pid 3260] <... futex resumed>) = 1 [pid 3260] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3258] exit_group(0) = ? [pid 3259] <... futex resumed>) = 231 [pid 3260] <... futex resumed>) = ? [pid 3259] +++ exited with 0 +++ [pid 3260] +++ exited with 0 +++ [pid 3258] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3261 attached , child_tidptr=0x5555564465d0) = 3261 [pid 3261] set_robust_list(0x5555564465e0, 24) = 0 [pid 3261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3261] setpgid(0, 0) = 0 [pid 3261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3261] write(3, "1000", 4) = 4 [pid 3261] close(3) = 0 [pid 3261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3261] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3261] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3262 attached [pid 3262] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3261] <... clone resumed>, parent_tid=[3262], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3262 [pid 3261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3262] <... futex resumed>) = 0 [pid 3261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3262] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3261] <... futex resumed>) = 0 [pid 3262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3261] <... futex resumed>) = 0 [pid 3262] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3262] <... mount resumed>) = 0 [pid 3262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3261] <... futex resumed>) = 0 [pid 3262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3261] <... futex resumed>) = 0 [pid 3262] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3262] <... mount resumed>) = 0 [pid 3262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3261] <... futex resumed>) = 0 [pid 3262] umount2("./file0", MNT_DETACH [pid 3261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3261] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3262] <... umount2 resumed>) = 0 [pid 3261] <... futex resumed>) = 0 [pid 3262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3262] <... futex resumed>) = 0 [pid 3262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3261] <... mmap resumed>) = 0x7fc84e05e000 [pid 3261] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3261] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3263 attached , parent_tid=[3263], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3263 [pid 3263] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3263] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3261] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3263] <... futex resumed>) = 0 [pid 3263] umount2("./file0", MNT_DETACH [pid 3261] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3263] <... umount2 resumed>) = 0 [pid 3263] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3263] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3261] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3261] exit_group(0) = ? [pid 3262] <... futex resumed>) = ? [pid 3262] +++ exited with 0 +++ [pid 3263] <... futex resumed>) = ? [pid 3263] +++ exited with 0 +++ [pid 3261] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3261, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3264 attached , child_tidptr=0x5555564465d0) = 3264 [pid 3264] set_robust_list(0x5555564465e0, 24) = 0 [pid 3264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3264] setpgid(0, 0) = 0 [pid 3264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3264] write(3, "1000", 4) = 4 [pid 3264] close(3) = 0 [pid 3264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3264] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3264] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3265 attached , parent_tid=[3265], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3265 [pid 3265] set_robust_list(0x7fc84e09f9e0, 24 [pid 3264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3265] <... set_robust_list resumed>) = 0 [pid 3264] <... futex resumed>) = 0 [pid 3264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3265] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3264] <... futex resumed>) = 0 [pid 3264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3265] <... futex resumed>) = 1 [pid 3265] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3264] <... futex resumed>) = 0 [pid 3264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3265] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3264] <... futex resumed>) = 0 [pid 3264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3264] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3264] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3265] umount2("./file0", MNT_DETACH [pid 3264] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3266], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3266 [pid 3264] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3265] <... umount2 resumed>) = 0 [pid 3264] <... futex resumed>) = 0 [pid 3264] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3266 attached [pid 3265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3266] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3266] umount2("./file0", MNT_DETACH) = 0 [pid 3265] <... futex resumed>) = 0 [pid 3266] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3264] <... futex resumed>) = 0 [pid 3264] exit_group(0) = ? [pid 3266] <... futex resumed>) = ? [pid 3265] +++ exited with 0 +++ [pid 3266] +++ exited with 0 +++ [pid 3264] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3264, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3267 attached , child_tidptr=0x5555564465d0) = 3267 [pid 3267] set_robust_list(0x5555564465e0, 24) = 0 [pid 3267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3267] setpgid(0, 0) = 0 [pid 3267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3267] write(3, "1000", 4) = 4 [pid 3267] close(3) = 0 [pid 3267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3267] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3267] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3268], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3268 ./strace-static-x86_64: Process 3268 attached [pid 3268] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3268] <... futex resumed>) = 0 [pid 3268] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3268] <... futex resumed>) = 0 [pid 3268] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3268] <... mount resumed>) = 0 [pid 3268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3268] <... futex resumed>) = 0 [pid 3268] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3268] <... mount resumed>) = 0 [pid 3268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3267] <... futex resumed>) = 0 [pid 3268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3267] <... futex resumed>) = 0 [pid 3267] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3268] umount2("./file0", MNT_DETACH [pid 3267] <... futex resumed>) = 0 [pid 3267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3268] <... umount2 resumed>) = 0 [pid 3267] <... mmap resumed>) = 0x7fc84e05e000 [pid 3268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3267] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3268] <... futex resumed>) = 0 [pid 3267] <... mprotect resumed>) = 0 [pid 3268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3267] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3269 attached , parent_tid=[3269], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3269 [pid 3269] set_robust_list(0x7fc84e07e9e0, 24 [pid 3267] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3269] <... set_robust_list resumed>) = 0 [pid 3267] <... futex resumed>) = 0 [pid 3269] umount2("./file0", MNT_DETACH [pid 3267] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3269] <... umount2 resumed>) = 0 [pid 3269] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3267] <... futex resumed>) = 0 [pid 3269] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3267] exit_group(0) = ? [pid 3269] <... futex resumed>) = ? [pid 3268] <... futex resumed>) = ? [pid 3268] +++ exited with 0 +++ [pid 3269] +++ exited with 0 +++ [pid 3267] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3270 ./strace-static-x86_64: Process 3270 attached [pid 3270] set_robust_list(0x5555564465e0, 24) = 0 [pid 3270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3270] setpgid(0, 0) = 0 [pid 3270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3270] write(3, "1000", 4) = 4 [pid 3270] close(3) = 0 [pid 3270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3270] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3270] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3271 attached [pid 3271] set_robust_list(0x7fc84e09f9e0, 24 [pid 3270] <... clone resumed>, parent_tid=[3271], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3271 [pid 3270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3271] <... set_robust_list resumed>) = 0 [pid 3271] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3270] <... futex resumed>) = 0 [pid 3270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3271] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3270] <... futex resumed>) = 0 [pid 3270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3271] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3270] <... futex resumed>) = 0 [pid 3270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3270] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3270] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3271] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3272 attached [pid 3270] <... clone resumed>, parent_tid=[3272], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3272 [pid 3270] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3270] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3272] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3272] umount2("./file0", MNT_DETACH) = 0 [pid 3271] <... umount2 resumed>) = 0 [pid 3272] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3270] <... futex resumed>) = 0 [pid 3272] <... futex resumed>) = 1 [pid 3272] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3271] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3270] exit_group(0) = ? [pid 3272] <... futex resumed>) = ? [pid 3272] +++ exited with 0 +++ [pid 3271] <... futex resumed>) = ? [pid 3271] +++ exited with 0 +++ [pid 3270] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3270, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3273 ./strace-static-x86_64: Process 3273 attached [pid 3273] set_robust_list(0x5555564465e0, 24) = 0 [pid 3273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3273] setpgid(0, 0) = 0 [pid 3273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3273] write(3, "1000", 4) = 4 [pid 3273] close(3) = 0 [pid 3273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3273] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3273] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3274], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3274 [pid 3273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3274 attached [pid 3274] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3274] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3274] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3273] <... futex resumed>) = 0 [pid 3273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3274] <... futex resumed>) = 0 [pid 3273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3274] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3273] <... futex resumed>) = 0 [pid 3273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3274] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3273] <... futex resumed>) = 0 [pid 3273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3273] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3273] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3274] umount2("./file0", MNT_DETACH [pid 3273] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3275], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3275 [pid 3273] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3273] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3275 attached [pid 3275] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3275] umount2("./file0", MNT_DETACH [pid 3274] <... umount2 resumed>) = 0 [pid 3275] <... umount2 resumed>) = 0 [pid 3275] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3273] <... futex resumed>) = 0 [pid 3275] <... futex resumed>) = 1 [pid 3275] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3274] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3273] exit_group(0) = ? [pid 3275] <... futex resumed>) = ? [pid 3275] +++ exited with 0 +++ [pid 3274] <... futex resumed>) = ? [pid 3274] +++ exited with 0 +++ [pid 3273] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3273, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3276 ./strace-static-x86_64: Process 3276 attached [pid 3276] set_robust_list(0x5555564465e0, 24) = 0 [pid 3276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3276] setpgid(0, 0) = 0 [pid 3276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3276] write(3, "1000", 4) = 4 [pid 3276] close(3) = 0 [pid 3276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3276] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3276] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3277 attached , parent_tid=[3277], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3277 [pid 3276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3277] set_robust_list(0x7fc84e09f9e0, 24 [pid 3276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3277] <... set_robust_list resumed>) = 0 [pid 3277] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3276] <... futex resumed>) = 0 [pid 3277] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3277] <... mount resumed>) = 0 [pid 3277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3276] <... futex resumed>) = 0 [pid 3276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3277] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3276] <... futex resumed>) = 0 [pid 3276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3276] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3276] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3276] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3278], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3278 [pid 3277] umount2("./file0", MNT_DETACH [pid 3276] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3276] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3278 attached [pid 3278] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3278] umount2("./file0", MNT_DETACH [pid 3277] <... umount2 resumed>) = 0 [pid 3278] <... umount2 resumed>) = 0 [pid 3277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3278] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3276] <... futex resumed>) = 0 [pid 3276] exit_group(0) = ? [pid 3278] <... futex resumed>) = ? [pid 3278] +++ exited with 0 +++ [pid 3277] <... futex resumed>) = ? [pid 3277] +++ exited with 0 +++ [pid 3276] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3276, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3279 ./strace-static-x86_64: Process 3279 attached [pid 3279] set_robust_list(0x5555564465e0, 24) = 0 [pid 3279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3279] setpgid(0, 0) = 0 [pid 3279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3279] write(3, "1000", 4) = 4 [pid 3279] close(3) = 0 [pid 3279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3279] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3279] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3280 attached , parent_tid=[3280], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3280 [pid 3279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3280] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3280] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3279] <... futex resumed>) = 0 [pid 3279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3280] <... futex resumed>) = 1 [pid 3280] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3279] <... futex resumed>) = 0 [pid 3279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3280] <... futex resumed>) = 1 [pid 3280] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3279] <... futex resumed>) = 0 [pid 3279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3279] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3280] umount2("./file0", MNT_DETACH [pid 3279] <... mprotect resumed>) = 0 [pid 3279] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3281], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3281 [pid 3279] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3279] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3281 attached [pid 3281] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3281] umount2("./file0", MNT_DETACH [pid 3280] <... umount2 resumed>) = 0 [pid 3280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3281] <... umount2 resumed>) = 0 [pid 3281] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3279] <... futex resumed>) = 0 [pid 3279] exit_group(0) = ? [pid 3280] <... futex resumed>) = ? [pid 3281] <... futex resumed>) = ? [pid 3281] +++ exited with 0 +++ [pid 3280] +++ exited with 0 +++ [pid 3279] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3279, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3282 ./strace-static-x86_64: Process 3282 attached [pid 3282] set_robust_list(0x5555564465e0, 24) = 0 [pid 3282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3282] setpgid(0, 0) = 0 [pid 3282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3282] write(3, "1000", 4) = 4 [pid 3282] close(3) = 0 [pid 3282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3282] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3282] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3283], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3283 ./strace-static-x86_64: Process 3283 attached [pid 3282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3283] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3283] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3283] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3282] <... futex resumed>) = 0 [pid 3282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3283] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3282] <... futex resumed>) = 0 [pid 3283] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3283] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3282] <... futex resumed>) = 0 [pid 3283] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3282] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3282] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3282] <... clone resumed>, parent_tid=[3284], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3284 [pid 3283] umount2("./file0", MNT_DETACH [pid 3282] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3282] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3284 attached [pid 3284] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3284] umount2("./file0", MNT_DETACH [pid 3283] <... umount2 resumed>) = 0 [pid 3283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3284] <... umount2 resumed>) = 0 [pid 3284] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3282] <... futex resumed>) = 0 [pid 3282] exit_group(0) = ? [pid 3283] <... futex resumed>) = ? [pid 3284] <... futex resumed>) = ? [pid 3284] +++ exited with 0 +++ [pid 3283] +++ exited with 0 +++ [pid 3282] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3282, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3285 ./strace-static-x86_64: Process 3285 attached [pid 3285] set_robust_list(0x5555564465e0, 24) = 0 [pid 3285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3285] setpgid(0, 0) = 0 [pid 3285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3285] write(3, "1000", 4) = 4 [pid 3285] close(3) = 0 [pid 3285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3285] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3285] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3286 attached , parent_tid=[3286], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3286 [pid 3285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3286] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3286] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3285] <... futex resumed>) = 0 [pid 3285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3286] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3285] <... futex resumed>) = 0 [pid 3285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3286] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3285] <... futex resumed>) = 0 [pid 3285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3285] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3285] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3287], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3287 [pid 3285] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3285] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3287 attached [pid 3287] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3287] umount2("./file0", MNT_DETACH [pid 3286] <... futex resumed>) = 1 [pid 3287] <... umount2 resumed>) = 0 [pid 3286] umount2("./file0", MNT_DETACH [pid 3287] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3285] <... futex resumed>) = 0 [pid 3287] <... futex resumed>) = 1 [pid 3287] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3286] <... umount2 resumed>) = 0 [pid 3286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3286] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3285] exit_group(0) = ? [pid 3287] <... futex resumed>) = ? [pid 3287] +++ exited with 0 +++ [pid 3286] <... futex resumed>) = ? [pid 3286] +++ exited with 0 +++ [pid 3285] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3285, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3288 ./strace-static-x86_64: Process 3288 attached [pid 3288] set_robust_list(0x5555564465e0, 24) = 0 [pid 3288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3288] setpgid(0, 0) = 0 [pid 3288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3288] write(3, "1000", 4) = 4 [pid 3288] close(3) = 0 [pid 3288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3288] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3288] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3289], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3289 [pid 3288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3289 attached [pid 3289] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3289] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3288] <... futex resumed>) = 0 [pid 3288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3289] <... futex resumed>) = 1 [pid 3289] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3288] <... futex resumed>) = 0 [pid 3289] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3289] <... mount resumed>) = 0 [pid 3289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3288] <... futex resumed>) = 0 [pid 3289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3288] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3288] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3288] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3290 attached [pid 3290] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3290] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3288] <... clone resumed>, parent_tid=[3290], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3290 [pid 3288] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3290] <... futex resumed>) = 0 [pid 3288] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3290] umount2("./file0", MNT_DETACH [pid 3289] umount2("./file0", MNT_DETACH) = 0 [pid 3290] <... umount2 resumed>) = 0 [pid 3289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3290] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3288] <... futex resumed>) = 0 [pid 3290] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3288] exit_group(0) = ? [pid 3290] <... futex resumed>) = ? [pid 3290] +++ exited with 0 +++ [pid 3289] <... futex resumed>) = ? [pid 3289] +++ exited with 0 +++ [pid 3288] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3288, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3291 attached , child_tidptr=0x5555564465d0) = 3291 [pid 3291] set_robust_list(0x5555564465e0, 24) = 0 [pid 3291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3291] setpgid(0, 0) = 0 [pid 3291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3291] write(3, "1000", 4) = 4 [pid 3291] close(3) = 0 [pid 3291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3291] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3291] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3292 attached , parent_tid=[3292], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3292 [pid 3292] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3292] <... futex resumed>) = 0 [pid 3291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3292] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3291] <... futex resumed>) = 0 [pid 3292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3292] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3291] <... futex resumed>) = 0 [pid 3292] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3292] <... mount resumed>) = 0 [pid 3292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3291] <... futex resumed>) = 0 [pid 3291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3292] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3291] <... futex resumed>) = 0 [pid 3292] <... mount resumed>) = 0 [pid 3291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3292] <... futex resumed>) = 0 [pid 3291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3292] umount2("./file0", MNT_DETACH [pid 3291] <... futex resumed>) = 0 [pid 3291] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3292] <... umount2 resumed>) = 0 [pid 3291] <... futex resumed>) = 0 [pid 3292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3292] <... futex resumed>) = 0 [pid 3291] <... mmap resumed>) = 0x7fc84e05e000 [pid 3292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3291] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3291] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3293 attached , parent_tid=[3293], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3293 [pid 3293] set_robust_list(0x7fc84e07e9e0, 24 [pid 3291] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3293] <... set_robust_list resumed>) = 0 [pid 3291] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3293] umount2("./file0", MNT_DETACH) = 0 [pid 3293] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3291] <... futex resumed>) = 0 [pid 3293] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3291] exit_group(0) = ? [pid 3292] <... futex resumed>) = 231 [pid 3292] +++ exited with 0 +++ [pid 3293] <... futex resumed>) = ? [pid 3293] +++ exited with 0 +++ [pid 3291] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3291, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3294 ./strace-static-x86_64: Process 3294 attached [pid 3294] set_robust_list(0x5555564465e0, 24) = 0 [pid 3294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3294] setpgid(0, 0) = 0 [pid 3294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3294] write(3, "1000", 4) = 4 [pid 3294] close(3) = 0 [pid 3294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3294] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3294] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3295 attached , parent_tid=[3295], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3295 [pid 3295] set_robust_list(0x7fc84e09f9e0, 24 [pid 3294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3295] <... set_robust_list resumed>) = 0 [pid 3295] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3294] <... futex resumed>) = 0 [pid 3295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3294] <... futex resumed>) = 0 [pid 3294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3295] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3294] <... futex resumed>) = 0 [pid 3294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3295] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3294] <... futex resumed>) = 0 [pid 3294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3294] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3294] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3294] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3296], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3296 [pid 3294] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3294] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3296 attached [pid 3296] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3296] umount2("./file0", MNT_DETACH [pid 3295] umount2("./file0", MNT_DETACH [pid 3296] <... umount2 resumed>) = 0 [pid 3296] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3294] <... futex resumed>) = 0 [pid 3296] <... futex resumed>) = 1 [pid 3296] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3295] <... umount2 resumed>) = 0 [pid 3295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3294] exit_group(0) = ? [pid 3296] <... futex resumed>) = ? [pid 3295] <... futex resumed>) = ? [pid 3296] +++ exited with 0 +++ [pid 3295] +++ exited with 0 +++ [pid 3294] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3294, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3297 ./strace-static-x86_64: Process 3297 attached [pid 3297] set_robust_list(0x5555564465e0, 24) = 0 [pid 3297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3297] setpgid(0, 0) = 0 [pid 3297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3297] write(3, "1000", 4) = 4 [pid 3297] close(3) = 0 [pid 3297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3297] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3297] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3298], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3298 [pid 3297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3298 attached [pid 3297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3298] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3298] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3297] <... futex resumed>) = 0 [pid 3297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3298] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3298] <... mount resumed>) = 0 [pid 3298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3297] <... futex resumed>) = 0 [pid 3297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3298] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3297] <... futex resumed>) = 0 [pid 3297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3298] umount2("./file0", MNT_DETACH [pid 3297] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3297] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3297] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3299], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3299 [pid 3297] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3297] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3299 attached [pid 3299] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3299] umount2("./file0", MNT_DETACH [pid 3298] <... umount2 resumed>) = 0 [pid 3298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3299] <... umount2 resumed>) = 0 [pid 3299] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3297] <... futex resumed>) = 0 [pid 3297] exit_group(0) = ? [pid 3298] <... futex resumed>) = ? [pid 3299] <... futex resumed>) = ? [pid 3298] +++ exited with 0 +++ [pid 3299] +++ exited with 0 +++ [pid 3297] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3297, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3300 ./strace-static-x86_64: Process 3300 attached [pid 3300] set_robust_list(0x5555564465e0, 24) = 0 [pid 3300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3300] setpgid(0, 0) = 0 [pid 3300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3300] write(3, "1000", 4) = 4 [pid 3300] close(3) = 0 [pid 3300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3300] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3300] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3301], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3301 ./strace-static-x86_64: Process 3301 attached [pid 3301] set_robust_list(0x7fc84e09f9e0, 24 [pid 3300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3301] <... set_robust_list resumed>) = 0 [pid 3301] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3300] <... futex resumed>) = 0 [pid 3300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3301] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3300] <... futex resumed>) = 0 [pid 3300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3301] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3300] <... futex resumed>) = 0 [pid 3300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3301] umount2("./file0", MNT_DETACH [pid 3300] <... mmap resumed>) = 0x7fc84e05e000 [pid 3300] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3300] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3302], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3302 [pid 3300] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3300] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3302 attached [pid 3302] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3302] umount2("./file0", MNT_DETACH [pid 3301] <... umount2 resumed>) = 0 [pid 3302] <... umount2 resumed>) = 0 [pid 3302] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3300] <... futex resumed>) = 0 [pid 3302] <... futex resumed>) = 1 [pid 3302] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3301] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3300] exit_group(0 [pid 3302] <... futex resumed>) = ? [pid 3300] <... exit_group resumed>) = ? [pid 3301] <... futex resumed>) = ? [pid 3301] +++ exited with 0 +++ [pid 3302] +++ exited with 0 +++ [pid 3300] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3300, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3303 ./strace-static-x86_64: Process 3303 attached [pid 3303] set_robust_list(0x5555564465e0, 24) = 0 [pid 3303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3303] setpgid(0, 0) = 0 [pid 3303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3303] write(3, "1000", 4) = 4 [pid 3303] close(3) = 0 [pid 3303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3303] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3303] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3304 attached , parent_tid=[3304], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3304 [pid 3303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3304] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3304] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3303] <... futex resumed>) = 0 [pid 3303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3304] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3303] <... futex resumed>) = 0 [pid 3303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3304] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3303] <... futex resumed>) = 0 [pid 3303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3303] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3303] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3305], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3305 [pid 3303] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3303] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3304] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3305 attached ) = 0 [pid 3304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3305] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3305] umount2("./file0", MNT_DETACH) = 0 [pid 3305] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3303] <... futex resumed>) = 0 [pid 3305] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3303] exit_group(0 [pid 3305] <... futex resumed>) = ? [pid 3304] <... futex resumed>) = ? [pid 3303] <... exit_group resumed>) = ? [pid 3305] +++ exited with 0 +++ [pid 3304] +++ exited with 0 +++ [pid 3303] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3303, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3306 ./strace-static-x86_64: Process 3306 attached [pid 3306] set_robust_list(0x5555564465e0, 24) = 0 [pid 3306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3306] setpgid(0, 0) = 0 [pid 3306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3306] write(3, "1000", 4) = 4 [pid 3306] close(3) = 0 [pid 3306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3306] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3306] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3307 attached , parent_tid=[3307], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3307 [pid 3307] set_robust_list(0x7fc84e09f9e0, 24 [pid 3306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3307] <... set_robust_list resumed>) = 0 [pid 3306] <... futex resumed>) = 0 [pid 3306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3307] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3306] <... futex resumed>) = 0 [pid 3306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3307] <... futex resumed>) = 1 [pid 3307] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3306] <... futex resumed>) = 0 [pid 3306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3307] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3306] <... futex resumed>) = 0 [pid 3306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3306] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3306] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3307] umount2("./file0", MNT_DETACH [pid 3306] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3307] <... umount2 resumed>) = 0 [pid 3306] <... clone resumed>, parent_tid=[3308], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3308 [pid 3306] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3306] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3308 attached [pid 3308] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3308] umount2("./file0", MNT_DETACH [pid 3307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3308] <... umount2 resumed>) = 0 [pid 3308] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3306] <... futex resumed>) = 0 [pid 3307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3306] exit_group(0 [pid 3308] <... futex resumed>) = 1 [pid 3306] <... exit_group resumed>) = ? [pid 3307] <... futex resumed>) = ? [pid 3308] +++ exited with 0 +++ [pid 3307] +++ exited with 0 +++ [pid 3306] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3306, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3309 ./strace-static-x86_64: Process 3309 attached [pid 3309] set_robust_list(0x5555564465e0, 24) = 0 [pid 3309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3309] setpgid(0, 0) = 0 [pid 3309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3309] write(3, "1000", 4) = 4 [pid 3309] close(3) = 0 [pid 3309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3309] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3309] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3310], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3310 [pid 3309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3310 attached [pid 3310] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3310] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3309] <... futex resumed>) = 0 [pid 3309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3310] <... futex resumed>) = 1 [pid 3310] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3309] <... futex resumed>) = 0 [pid 3310] <... futex resumed>) = 1 [pid 3309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3310] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3309] <... futex resumed>) = 0 [pid 3309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3310] <... mount resumed>) = 0 [pid 3310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3309] <... futex resumed>) = 0 [pid 3310] <... futex resumed>) = 1 [pid 3309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3309] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3309] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3309] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3311], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3311 [pid 3309] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3309] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3311 attached [pid 3311] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3311] umount2("./file0", MNT_DETACH [pid 3310] umount2("./file0", MNT_DETACH) = 0 [pid 3310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3311] <... umount2 resumed>) = 0 [pid 3311] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3309] <... futex resumed>) = 0 [pid 3309] exit_group(0) = ? [pid 3311] <... futex resumed>) = ? [pid 3310] +++ exited with 0 +++ [pid 3311] +++ exited with 0 +++ [pid 3309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3309, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3312 ./strace-static-x86_64: Process 3312 attached [pid 3312] set_robust_list(0x5555564465e0, 24) = 0 [pid 3312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3312] setpgid(0, 0) = 0 [pid 3312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3312] write(3, "1000", 4) = 4 [pid 3312] close(3) = 0 [pid 3312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3312] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3312] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3313 attached [pid 3313] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] <... clone resumed>, parent_tid=[3313], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3313 [pid 3312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3313] <... futex resumed>) = 0 [pid 3313] mkdir("./file0", 000 [pid 3312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3313] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3313] <... futex resumed>) = 0 [pid 3313] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3313] <... mount resumed>) = 0 [pid 3313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3313] <... futex resumed>) = 0 [pid 3313] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3313] <... mount resumed>) = 0 [pid 3313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] <... futex resumed>) = 0 [pid 3312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3313] <... futex resumed>) = 0 [pid 3313] umount2("./file0", MNT_DETACH [pid 3312] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3313] <... umount2 resumed>) = 0 [pid 3313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] <... futex resumed>) = 0 [pid 3312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3312] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3312] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3314 attached , parent_tid=[3314], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3314 [pid 3314] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3314] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3314] <... futex resumed>) = 0 [pid 3314] umount2("./file0", MNT_DETACH [pid 3312] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3314] <... umount2 resumed>) = 0 [pid 3314] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3314] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3312] exit_group(0 [pid 3313] <... futex resumed>) = ? [pid 3312] <... exit_group resumed>) = ? [pid 3313] +++ exited with 0 +++ [pid 3314] <... futex resumed>) = ? [pid 3314] +++ exited with 0 +++ [pid 3312] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3315 ./strace-static-x86_64: Process 3315 attached [pid 3315] set_robust_list(0x5555564465e0, 24) = 0 [pid 3315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3315] setpgid(0, 0) = 0 [pid 3315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3315] write(3, "1000", 4) = 4 [pid 3315] close(3) = 0 [pid 3315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3315] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3315] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3316 attached , parent_tid=[3316], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3316 [pid 3316] set_robust_list(0x7fc84e09f9e0, 24 [pid 3315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3316] <... set_robust_list resumed>) = 0 [pid 3315] <... futex resumed>) = 0 [pid 3316] mkdir("./file0", 000 [pid 3315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3316] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3316] <... futex resumed>) = 0 [pid 3315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3316] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3315] <... futex resumed>) = 0 [pid 3315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3316] <... futex resumed>) = 0 [pid 3315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3316] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3315] <... futex resumed>) = 0 [pid 3315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3316] umount2("./file0", MNT_DETACH [pid 3315] <... futex resumed>) = 0 [pid 3315] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3316] <... umount2 resumed>) = 0 [pid 3315] <... futex resumed>) = 0 [pid 3316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3316] <... futex resumed>) = 0 [pid 3315] <... mmap resumed>) = 0x7fc84e05e000 [pid 3316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3315] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3315] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3317 attached , parent_tid=[3317], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3317 [pid 3317] set_robust_list(0x7fc84e07e9e0, 24 [pid 3315] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3317] <... set_robust_list resumed>) = 0 [pid 3315] <... futex resumed>) = 0 [pid 3317] umount2("./file0", MNT_DETACH [pid 3315] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3317] <... umount2 resumed>) = 0 [pid 3317] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3315] <... futex resumed>) = 0 [pid 3317] <... futex resumed>) = 1 [pid 3315] exit_group(0 [pid 3317] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3316] <... futex resumed>) = ? [pid 3315] <... exit_group resumed>) = ? [pid 3317] <... futex resumed>) = ? [pid 3316] +++ exited with 0 +++ [pid 3317] +++ exited with 0 +++ [pid 3315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3318 ./strace-static-x86_64: Process 3318 attached [pid 3318] set_robust_list(0x5555564465e0, 24) = 0 [pid 3318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3318] setpgid(0, 0) = 0 [pid 3318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3318] write(3, "1000", 4) = 4 [pid 3318] close(3) = 0 [pid 3318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3318] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3318] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3319 attached , parent_tid=[3319], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3319 [pid 3319] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3319] <... futex resumed>) = 0 [pid 3319] mkdir("./file0", 000 [pid 3318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3319] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3319] <... futex resumed>) = 0 [pid 3319] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3319] <... mount resumed>) = 0 [pid 3319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3318] <... futex resumed>) = 0 [pid 3318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3319] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3318] <... futex resumed>) = 0 [pid 3318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3318] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3319] umount2("./file0", MNT_DETACH [pid 3318] <... mmap resumed>) = 0x7fc84e05e000 [pid 3318] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3318] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3319] <... umount2 resumed>) = 0 [pid 3318] <... clone resumed>, parent_tid=[3320], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3320 [pid 3318] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3318] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3320 attached [pid 3319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3320] set_robust_list(0x7fc84e07e9e0, 24 [pid 3319] <... futex resumed>) = 0 [pid 3320] <... set_robust_list resumed>) = 0 [pid 3319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3320] umount2("./file0", MNT_DETACH) = 0 [pid 3320] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3318] <... futex resumed>) = 0 [pid 3318] exit_group(0) = ? [pid 3319] <... futex resumed>) = ? [pid 3319] +++ exited with 0 +++ [pid 3320] +++ exited with 0 +++ [pid 3318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3321 attached , child_tidptr=0x5555564465d0) = 3321 [pid 3321] set_robust_list(0x5555564465e0, 24) = 0 [pid 3321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3321] setpgid(0, 0) = 0 [pid 3321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3321] write(3, "1000", 4) = 4 [pid 3321] close(3) = 0 [pid 3321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3321] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3321] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3322 attached [pid 3322] set_robust_list(0x7fc84e09f9e0, 24 [pid 3321] <... clone resumed>, parent_tid=[3322], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3322 [pid 3321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3322] <... set_robust_list resumed>) = 0 [pid 3322] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3321] <... futex resumed>) = 0 [pid 3321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3322] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3321] <... futex resumed>) = 0 [pid 3321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3322] <... mount resumed>) = 0 [pid 3322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3321] <... futex resumed>) = 0 [pid 3321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3322] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3321] <... futex resumed>) = 0 [pid 3321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3321] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3321] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3321] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3322] umount2("./file0", MNT_DETACH [pid 3321] <... clone resumed>, parent_tid=[3323], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3323 [pid 3321] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3321] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3323 attached [pid 3323] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3323] umount2("./file0", MNT_DETACH) = 0 [pid 3322] <... umount2 resumed>) = 0 [pid 3323] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3321] <... futex resumed>) = 0 [pid 3322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3323] <... futex resumed>) = 1 [pid 3323] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3322] <... futex resumed>) = 0 [pid 3322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3321] exit_group(0) = ? [pid 3323] <... futex resumed>) = ? [pid 3323] +++ exited with 0 +++ [pid 3322] <... futex resumed>) = ? [pid 3322] +++ exited with 0 +++ [pid 3321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3324 attached , child_tidptr=0x5555564465d0) = 3324 [pid 3324] set_robust_list(0x5555564465e0, 24) = 0 [pid 3324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3324] setpgid(0, 0) = 0 [pid 3324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3324] write(3, "1000", 4) = 4 [pid 3324] close(3) = 0 [pid 3324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3324] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3324] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3325 attached , parent_tid=[3325], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3325 [pid 3325] set_robust_list(0x7fc84e09f9e0, 24 [pid 3324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3325] <... set_robust_list resumed>) = 0 [pid 3324] <... futex resumed>) = 0 [pid 3324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3325] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3324] <... futex resumed>) = 0 [pid 3325] <... futex resumed>) = 1 [pid 3324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3325] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3324] <... futex resumed>) = 0 [pid 3324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3325] <... mount resumed>) = 0 [pid 3325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3324] <... futex resumed>) = 0 [pid 3325] <... futex resumed>) = 1 [pid 3324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3325] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3324] <... futex resumed>) = 0 [pid 3324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3325] <... mount resumed>) = 0 [pid 3325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3324] <... futex resumed>) = 0 [pid 3325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3324] <... futex resumed>) = 0 [pid 3325] umount2("./file0", MNT_DETACH [pid 3324] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3324] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3324] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3326 attached , parent_tid=[3326], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3326 [pid 3326] set_robust_list(0x7fc84e07e9e0, 24 [pid 3324] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3324] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3325] <... umount2 resumed>) = 0 [pid 3325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3326] <... set_robust_list resumed>) = 0 [pid 3325] <... futex resumed>) = 0 [pid 3326] umount2("./file0", MNT_DETACH [pid 3325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3326] <... umount2 resumed>) = 0 [pid 3326] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3324] <... futex resumed>) = 0 [pid 3324] exit_group(0) = ? [pid 3325] <... futex resumed>) = ? [pid 3326] <... futex resumed>) = ? [pid 3326] +++ exited with 0 +++ [pid 3325] +++ exited with 0 +++ [pid 3324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3327 attached , child_tidptr=0x5555564465d0) = 3327 [pid 3327] set_robust_list(0x5555564465e0, 24) = 0 [pid 3327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3327] setpgid(0, 0) = 0 [pid 3327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3327] write(3, "1000", 4) = 4 [pid 3327] close(3) = 0 [pid 3327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3327] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3327] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3328 attached , parent_tid=[3328], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3328 [pid 3327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3328] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3328] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3327] <... futex resumed>) = 0 [pid 3328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3327] <... futex resumed>) = 0 [pid 3328] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3328] <... mount resumed>) = 0 [pid 3328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3327] <... futex resumed>) = 0 [pid 3328] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3328] <... mount resumed>) = 0 [pid 3327] <... futex resumed>) = 0 [pid 3327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3327] <... futex resumed>) = 0 [pid 3327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3328] umount2("./file0", MNT_DETACH [pid 3327] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3327] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3327] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3329], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3329 [pid 3327] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3327] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3329 attached [pid 3329] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3329] umount2("./file0", MNT_DETACH [pid 3328] <... umount2 resumed>) = 0 [pid 3329] <... umount2 resumed>) = 0 [pid 3329] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3327] <... futex resumed>) = 0 [pid 3329] <... futex resumed>) = 1 [pid 3329] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3327] exit_group(0) = ? [pid 3329] <... futex resumed>) = ? [pid 3328] <... futex resumed>) = 231 [pid 3329] +++ exited with 0 +++ [pid 3328] +++ exited with 0 +++ [pid 3327] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3327, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3330 ./strace-static-x86_64: Process 3330 attached [pid 3330] set_robust_list(0x5555564465e0, 24) = 0 [pid 3330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3330] setpgid(0, 0) = 0 [pid 3330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3330] write(3, "1000", 4) = 4 [pid 3330] close(3) = 0 [pid 3330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3330] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3330] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3331 attached , parent_tid=[3331], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3331 [pid 3330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3331] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3331] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3330] <... futex resumed>) = 0 [pid 3330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3331] <... futex resumed>) = 0 [pid 3330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3331] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3330] <... futex resumed>) = 0 [pid 3331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3330] <... futex resumed>) = 0 [pid 3331] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3331] <... mount resumed>) = 0 [pid 3331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3330] <... futex resumed>) = 0 [pid 3330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3330] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3330] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3331] umount2("./file0", MNT_DETACH [pid 3330] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3331] <... umount2 resumed>) = 0 [pid 3330] <... clone resumed>, parent_tid=[3332], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3332 [pid 3330] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3330] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3332 attached [pid 3331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3332] set_robust_list(0x7fc84e07e9e0, 24 [pid 3331] <... futex resumed>) = 0 [pid 3332] <... set_robust_list resumed>) = 0 [pid 3331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3332] umount2("./file0", MNT_DETACH) = 0 [pid 3332] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3330] <... futex resumed>) = 0 [pid 3330] exit_group(0) = ? [pid 3331] <... futex resumed>) = ? [pid 3331] +++ exited with 0 +++ [pid 3332] +++ exited with 0 +++ [pid 3330] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3330, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3333 attached , child_tidptr=0x5555564465d0) = 3333 [pid 3333] set_robust_list(0x5555564465e0, 24) = 0 [pid 3333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3333] setpgid(0, 0) = 0 [pid 3333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3333] write(3, "1000", 4) = 4 [pid 3333] close(3) = 0 [pid 3333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3333] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3333] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3334 attached , parent_tid=[3334], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3334 [pid 3334] set_robust_list(0x7fc84e09f9e0, 24 [pid 3333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3334] <... set_robust_list resumed>) = 0 [pid 3334] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3333] <... futex resumed>) = 0 [pid 3334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3334] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3333] <... futex resumed>) = 0 [pid 3333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3334] <... mount resumed>) = 0 [pid 3334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3333] <... futex resumed>) = 0 [pid 3334] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3334] <... mount resumed>) = 0 [pid 3334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3333] <... futex resumed>) = 0 [pid 3334] umount2("./file0", MNT_DETACH [pid 3333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3333] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3334] <... umount2 resumed>) = 0 [pid 3333] <... mmap resumed>) = 0x7fc84e05e000 [pid 3334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3333] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3334] <... futex resumed>) = 0 [pid 3333] <... mprotect resumed>) = 0 [pid 3334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3333] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3335 attached [pid 3335] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3335] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3333] <... clone resumed>, parent_tid=[3335], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3335 [pid 3333] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3335] <... futex resumed>) = 0 [pid 3335] umount2("./file0", MNT_DETACH [pid 3333] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3335] <... umount2 resumed>) = 0 [pid 3335] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3333] <... futex resumed>) = 0 [pid 3333] exit_group(0) = ? [pid 3335] +++ exited with 0 +++ [pid 3334] <... futex resumed>) = ? [pid 3334] +++ exited with 0 +++ [pid 3333] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3336 ./strace-static-x86_64: Process 3336 attached [pid 3336] set_robust_list(0x5555564465e0, 24) = 0 [pid 3336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3336] setpgid(0, 0) = 0 [pid 3336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3336] write(3, "1000", 4) = 4 [pid 3336] close(3) = 0 [pid 3336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3336] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3336] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3337 attached , parent_tid=[3337], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3337 [pid 3337] set_robust_list(0x7fc84e09f9e0, 24 [pid 3336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3337] <... set_robust_list resumed>) = 0 [pid 3336] <... futex resumed>) = 0 [pid 3336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3337] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3336] <... futex resumed>) = 0 [pid 3337] <... futex resumed>) = 1 [pid 3336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3337] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3336] <... futex resumed>) = 0 [pid 3336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3337] <... mount resumed>) = 0 [pid 3337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3336] <... futex resumed>) = 0 [pid 3337] <... futex resumed>) = 1 [pid 3336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3337] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3336] <... futex resumed>) = 0 [pid 3336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3337] <... mount resumed>) = 0 [pid 3337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3336] <... futex resumed>) = 0 [pid 3337] <... futex resumed>) = 1 [pid 3336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3336] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3336] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3336] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3338], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3338 [pid 3336] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3336] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3337] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3338 attached ) = 0 [pid 3337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3337] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3338] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3338] umount2("./file0", MNT_DETACH) = 0 [pid 3338] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3336] <... futex resumed>) = 0 [pid 3336] exit_group(0) = ? [pid 3337] <... futex resumed>) = ? [pid 3338] +++ exited with 0 +++ [pid 3337] +++ exited with 0 +++ [pid 3336] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3336, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3339 ./strace-static-x86_64: Process 3339 attached [pid 3339] set_robust_list(0x5555564465e0, 24) = 0 [pid 3339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3339] setpgid(0, 0) = 0 [pid 3339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3339] write(3, "1000", 4) = 4 [pid 3339] close(3) = 0 [pid 3339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3339] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3339] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3340 attached , parent_tid=[3340], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3340 [pid 3340] set_robust_list(0x7fc84e09f9e0, 24 [pid 3339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3340] <... set_robust_list resumed>) = 0 [pid 3339] <... futex resumed>) = 0 [pid 3340] mkdir("./file0", 000 [pid 3339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3340] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3339] <... futex resumed>) = 0 [pid 3340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3340] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3339] <... futex resumed>) = 0 [pid 3340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3340] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3339] <... futex resumed>) = 0 [pid 3339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3339] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3339] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3340] umount2("./file0", MNT_DETACH [pid 3339] <... mprotect resumed>) = 0 [pid 3339] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3341 attached [pid 3340] <... umount2 resumed>) = 0 [pid 3339] <... clone resumed>, parent_tid=[3341], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3341 [pid 3339] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3339] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3341] set_robust_list(0x7fc84e07e9e0, 24 [pid 3340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3341] <... set_robust_list resumed>) = 0 [pid 3340] <... futex resumed>) = 0 [pid 3341] umount2("./file0", MNT_DETACH [pid 3340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3341] <... umount2 resumed>) = 0 [pid 3341] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3339] <... futex resumed>) = 0 [pid 3339] exit_group(0 [pid 3341] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3339] <... exit_group resumed>) = ? [pid 3341] <... futex resumed>) = ? [pid 3340] <... futex resumed>) = ? [pid 3340] +++ exited with 0 +++ [pid 3341] +++ exited with 0 +++ [pid 3339] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3339, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3342 ./strace-static-x86_64: Process 3342 attached [pid 3342] set_robust_list(0x5555564465e0, 24) = 0 [pid 3342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3342] setpgid(0, 0) = 0 [pid 3342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3342] write(3, "1000", 4) = 4 [pid 3342] close(3) = 0 [pid 3342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3342] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3342] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3343 attached , parent_tid=[3343], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3343 [pid 3342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3343] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3343] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3342] <... futex resumed>) = 0 [pid 3343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3343] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3342] <... futex resumed>) = 0 [pid 3342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3343] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3342] <... futex resumed>) = 0 [pid 3342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3343] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3342] <... futex resumed>) = 0 [pid 3342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3342] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3342] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3342] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3343] umount2("./file0", MNT_DETACH [pid 3342] <... clone resumed>, parent_tid=[3344], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3344 [pid 3342] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3342] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3344 attached [pid 3344] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3344] umount2("./file0", MNT_DETACH) = 0 [pid 3344] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3342] <... futex resumed>) = 0 [pid 3344] <... futex resumed>) = 1 [pid 3344] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3343] <... umount2 resumed>) = 0 [pid 3343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3342] exit_group(0) = ? [pid 3343] <... futex resumed>) = ? [pid 3343] +++ exited with 0 +++ [pid 3344] <... futex resumed>) = ? [pid 3344] +++ exited with 0 +++ [pid 3342] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3342, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3345 ./strace-static-x86_64: Process 3345 attached [pid 3345] set_robust_list(0x5555564465e0, 24) = 0 [pid 3345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3345] setpgid(0, 0) = 0 [pid 3345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3345] write(3, "1000", 4) = 4 [pid 3345] close(3) = 0 [pid 3345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3345] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3345] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3346 attached , parent_tid=[3346], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3346 [pid 3345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3346] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3346] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3345] <... futex resumed>) = 0 [pid 3345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3346] <... futex resumed>) = 0 [pid 3345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3346] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3345] <... futex resumed>) = 0 [pid 3345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3346] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3345] <... futex resumed>) = 0 [pid 3345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3345] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3345] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3346] umount2("./file0", MNT_DETACH [pid 3345] <... mprotect resumed>) = 0 [pid 3345] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3347], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3347 [pid 3346] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3347 attached [pid 3347] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3347] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3345] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3346] <... futex resumed>) = 0 [pid 3346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3345] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3347] <... futex resumed>) = 0 [pid 3347] umount2("./file0", MNT_DETACH) = 0 [pid 3347] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3347] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3345] <... futex resumed>) = 0 [pid 3345] exit_group(0 [pid 3346] <... futex resumed>) = ? [pid 3345] <... exit_group resumed>) = ? [pid 3346] +++ exited with 0 +++ [pid 3347] <... futex resumed>) = ? [pid 3347] +++ exited with 0 +++ [pid 3345] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3345, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3348 ./strace-static-x86_64: Process 3348 attached [pid 3348] set_robust_list(0x5555564465e0, 24) = 0 [pid 3348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3348] setpgid(0, 0) = 0 [pid 3348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3348] write(3, "1000", 4) = 4 [pid 3348] close(3) = 0 [pid 3348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3348] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3348] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3349], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3349 [pid 3348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3349 attached [pid 3349] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3349] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3348] <... futex resumed>) = 0 [pid 3348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3349] <... futex resumed>) = 1 [pid 3349] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3348] <... futex resumed>) = 0 [pid 3348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3349] <... futex resumed>) = 1 [pid 3349] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3348] <... futex resumed>) = 0 [pid 3349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3348] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3348] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3349] umount2("./file0", MNT_DETACH) = 0 [pid 3348] <... clone resumed>, parent_tid=[3350], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3350 [pid 3348] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3348] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3350 attached [pid 3350] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3350] umount2("./file0", MNT_DETACH [pid 3349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3350] <... umount2 resumed>) = 0 [pid 3350] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3348] <... futex resumed>) = 0 [pid 3348] exit_group(0) = ? [pid 3349] <... futex resumed>) = ? [pid 3350] <... futex resumed>) = ? [pid 3349] +++ exited with 0 +++ [pid 3350] +++ exited with 0 +++ [pid 3348] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3351 ./strace-static-x86_64: Process 3351 attached [pid 3351] set_robust_list(0x5555564465e0, 24) = 0 [pid 3351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3351] setpgid(0, 0) = 0 [pid 3351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3351] write(3, "1000", 4) = 4 [pid 3351] close(3) = 0 [pid 3351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3351] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3351] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3352 attached , parent_tid=[3352], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3352 [pid 3352] set_robust_list(0x7fc84e09f9e0, 24 [pid 3351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3352] <... set_robust_list resumed>) = 0 [pid 3352] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3351] <... futex resumed>) = 1 [pid 3352] <... futex resumed>) = 0 [pid 3352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3352] <... futex resumed>) = 0 [pid 3352] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3351] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3352] <... futex resumed>) = 0 [pid 3352] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3352] <... mount resumed>) = 0 [pid 3352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3351] <... futex resumed>) = 0 [pid 3352] umount2("./file0", MNT_DETACH [pid 3351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3351] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3352] <... umount2 resumed>) = 0 [pid 3351] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3351] <... mprotect resumed>) = 0 [pid 3351] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3352] <... futex resumed>) = 0 [pid 3352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3353 attached [pid 3353] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3353] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3351] <... clone resumed>, parent_tid=[3353], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3353 [pid 3351] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3353] <... futex resumed>) = 0 [pid 3353] umount2("./file0", MNT_DETACH) = 0 [pid 3353] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3353] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3351] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3351] exit_group(0) = ? [pid 3352] <... futex resumed>) = ? [pid 3353] <... futex resumed>) = ? [pid 3353] +++ exited with 0 +++ [pid 3352] +++ exited with 0 +++ [pid 3351] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3354 attached , child_tidptr=0x5555564465d0) = 3354 [pid 3354] set_robust_list(0x5555564465e0, 24) = 0 [pid 3354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3354] setpgid(0, 0) = 0 [pid 3354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3354] write(3, "1000", 4) = 4 [pid 3354] close(3) = 0 [pid 3354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3354] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3354] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3355 attached , parent_tid=[3355], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3355 [pid 3354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3355] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3355] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3354] <... futex resumed>) = 0 [pid 3354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3355] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3354] <... futex resumed>) = 0 [pid 3354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3355] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3354] <... futex resumed>) = 0 [pid 3354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3354] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3354] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3355] umount2("./file0", MNT_DETACH [pid 3354] <... clone resumed>, parent_tid=[3356], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3356 [pid 3354] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3354] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3356 attached [pid 3356] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3356] umount2("./file0", MNT_DETACH) = 0 [pid 3356] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3354] <... futex resumed>) = 0 [pid 3356] <... futex resumed>) = 1 [pid 3356] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3355] <... umount2 resumed>) = 0 [pid 3355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3354] exit_group(0) = ? [pid 3355] <... futex resumed>) = 231 [pid 3356] <... futex resumed>) = ? [pid 3356] +++ exited with 0 +++ [pid 3355] +++ exited with 0 +++ [pid 3354] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3354, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3357 ./strace-static-x86_64: Process 3357 attached [pid 3357] set_robust_list(0x5555564465e0, 24) = 0 [pid 3357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3357] setpgid(0, 0) = 0 [pid 3357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3357] write(3, "1000", 4) = 4 [pid 3357] close(3) = 0 [pid 3357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3357] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3357] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3358], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3358 ./strace-static-x86_64: Process 3358 attached [pid 3358] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3358] <... futex resumed>) = 0 [pid 3358] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3358] <... futex resumed>) = 0 [pid 3358] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3358] <... mount resumed>) = 0 [pid 3358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3357] <... futex resumed>) = 0 [pid 3358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3357] <... futex resumed>) = 0 [pid 3358] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3358] <... mount resumed>) = 0 [pid 3358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3357] <... futex resumed>) = 0 [pid 3358] umount2("./file0", MNT_DETACH [pid 3357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3357] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3358] <... umount2 resumed>) = 0 [pid 3357] <... mmap resumed>) = 0x7fc84e05e000 [pid 3358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3357] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3358] <... futex resumed>) = 0 [pid 3357] <... mprotect resumed>) = 0 [pid 3358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3357] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3359 attached , parent_tid=[3359], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3359 [pid 3359] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3359] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3357] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3359] <... futex resumed>) = 0 [pid 3359] umount2("./file0", MNT_DETACH [pid 3357] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3359] <... umount2 resumed>) = 0 [pid 3359] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3359] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3357] exit_group(0 [pid 3358] <... futex resumed>) = ? [pid 3357] <... exit_group resumed>) = ? [pid 3359] <... futex resumed>) = ? [pid 3359] +++ exited with 0 +++ [pid 3358] +++ exited with 0 +++ [pid 3357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3357, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3360 ./strace-static-x86_64: Process 3360 attached [pid 3360] set_robust_list(0x5555564465e0, 24) = 0 [pid 3360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3360] setpgid(0, 0) = 0 [pid 3360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3360] write(3, "1000", 4) = 4 [pid 3360] close(3) = 0 [pid 3360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3360] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3360] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3361 attached , parent_tid=[3361], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3361 [pid 3360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3361] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3361] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3360] <... futex resumed>) = 0 [pid 3360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3361] <... futex resumed>) = 1 [pid 3361] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3360] <... futex resumed>) = 0 [pid 3360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3361] <... futex resumed>) = 1 [pid 3361] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3360] <... futex resumed>) = 0 [pid 3361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3361] umount2("./file0", MNT_DETACH [pid 3360] <... futex resumed>) = 0 [pid 3360] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3361] <... umount2 resumed>) = 0 [pid 3360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3360] <... mmap resumed>) = 0x7fc84e05e000 [pid 3361] <... futex resumed>) = 0 [pid 3360] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3360] <... mprotect resumed>) = 0 [pid 3360] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3362 attached , parent_tid=[3362], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3362 [pid 3360] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3360] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3362] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3362] umount2("./file0", MNT_DETACH) = 0 [pid 3362] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3360] <... futex resumed>) = 0 [pid 3362] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3360] exit_group(0) = ? [pid 3362] <... futex resumed>) = ? [pid 3361] <... futex resumed>) = ? [pid 3362] +++ exited with 0 +++ [pid 3361] +++ exited with 0 +++ [pid 3360] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3360, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3363 attached , child_tidptr=0x5555564465d0) = 3363 [pid 3363] set_robust_list(0x5555564465e0, 24) = 0 [pid 3363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3363] setpgid(0, 0) = 0 [pid 3363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3363] write(3, "1000", 4) = 4 [pid 3363] close(3) = 0 [pid 3363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3363] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3363] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3364 attached , parent_tid=[3364], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3364 [pid 3363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3364] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3364] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3363] <... futex resumed>) = 0 [pid 3363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3364] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3363] <... futex resumed>) = 0 [pid 3363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3364] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3363] <... futex resumed>) = 0 [pid 3363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3363] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3363] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3364] umount2("./file0", MNT_DETACH [pid 3363] <... clone resumed>, parent_tid=[3365], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3365 [pid 3363] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3363] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3365 attached [pid 3365] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3365] umount2("./file0", MNT_DETACH [pid 3364] <... umount2 resumed>) = 0 [pid 3365] <... umount2 resumed>) = 0 [pid 3364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3365] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3363] <... futex resumed>) = 0 [pid 3363] exit_group(0) = ? [pid 3364] <... futex resumed>) = ? [pid 3365] <... futex resumed>) = ? [pid 3364] +++ exited with 0 +++ [pid 3365] +++ exited with 0 +++ [pid 3363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3363, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3366 attached , child_tidptr=0x5555564465d0) = 3366 [pid 3366] set_robust_list(0x5555564465e0, 24) = 0 [pid 3366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3366] setpgid(0, 0) = 0 [pid 3366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3366] write(3, "1000", 4) = 4 [pid 3366] close(3) = 0 [pid 3366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3366] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3366] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3367], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3367 ./strace-static-x86_64: Process 3367 attached [pid 3367] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] <... futex resumed>) = 0 [pid 3367] mkdir("./file0", 000 [pid 3366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3367] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] <... futex resumed>) = 0 [pid 3366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] <... futex resumed>) = 0 [pid 3367] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3367] <... mount resumed>) = 0 [pid 3367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] <... futex resumed>) = 0 [pid 3366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] <... futex resumed>) = 0 [pid 3367] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3367] <... mount resumed>) = 0 [pid 3367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] <... futex resumed>) = 0 [pid 3366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3367] <... futex resumed>) = 0 [pid 3367] umount2("./file0", MNT_DETACH [pid 3366] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3367] <... umount2 resumed>) = 0 [pid 3367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] <... futex resumed>) = 0 [pid 3366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3366] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3366] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3368 attached [pid 3368] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3368] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] <... clone resumed>, parent_tid=[3368], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3368 [pid 3366] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3368] <... futex resumed>) = 0 [pid 3368] umount2("./file0", MNT_DETACH [pid 3366] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3368] <... umount2 resumed>) = 0 [pid 3368] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3368] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3366] exit_group(0) = ? [pid 3368] <... futex resumed>) = 230 [pid 3367] <... futex resumed>) = ? [pid 3367] +++ exited with 0 +++ [pid 3368] +++ exited with 0 +++ [pid 3366] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3369 ./strace-static-x86_64: Process 3369 attached [pid 3369] set_robust_list(0x5555564465e0, 24) = 0 [pid 3369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3369] setpgid(0, 0) = 0 [pid 3369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3369] write(3, "1000", 4) = 4 [pid 3369] close(3) = 0 [pid 3369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3369] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3369] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3370 attached , parent_tid=[3370], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3370 [pid 3369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3370] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3370] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3369] <... futex resumed>) = 0 [pid 3369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3370] <... futex resumed>) = 0 [pid 3369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3370] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3369] <... futex resumed>) = 0 [pid 3369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3370] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3369] <... futex resumed>) = 0 [pid 3370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3369] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3369] <... mmap resumed>) = 0x7fc84e05e000 [pid 3369] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3370] umount2("./file0", MNT_DETACH [pid 3369] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3370] <... umount2 resumed>) = 0 [pid 3370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3371 attached [pid 3369] <... clone resumed>, parent_tid=[3371], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3371 [pid 3370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3369] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3371] set_robust_list(0x7fc84e07e9e0, 24 [pid 3369] <... futex resumed>) = 0 [pid 3371] <... set_robust_list resumed>) = 0 [pid 3369] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3371] umount2("./file0", MNT_DETACH) = 0 [pid 3371] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3369] <... futex resumed>) = 0 [pid 3371] <... futex resumed>) = 1 [pid 3369] exit_group(0) = ? [pid 3370] <... futex resumed>) = ? [pid 3370] +++ exited with 0 +++ [pid 3371] +++ exited with 0 +++ [pid 3369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3372 attached , child_tidptr=0x5555564465d0) = 3372 [pid 3372] set_robust_list(0x5555564465e0, 24) = 0 [pid 3372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3372] setpgid(0, 0) = 0 [pid 3372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3372] write(3, "1000", 4) = 4 [pid 3372] close(3) = 0 [pid 3372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3372] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3372] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3373], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3373 [pid 3372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3373 attached [pid 3373] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3373] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3372] <... futex resumed>) = 0 [pid 3372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3373] <... futex resumed>) = 1 [pid 3373] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3372] <... futex resumed>) = 0 [pid 3373] <... futex resumed>) = 1 [pid 3372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3373] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3372] <... futex resumed>) = 0 [pid 3372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3373] <... mount resumed>) = 0 [pid 3373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3372] <... futex resumed>) = 0 [pid 3372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3372] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3372] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3372] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3373] umount2("./file0", MNT_DETACH [pid 3372] <... clone resumed>, parent_tid=[3374], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3374 [pid 3372] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3373] <... umount2 resumed>) = 0 [pid 3372] <... futex resumed>) = 0 [pid 3372] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3374 attached [pid 3374] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3374] umount2("./file0", MNT_DETACH [pid 3373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3374] <... umount2 resumed>) = 0 [pid 3373] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3374] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3372] <... futex resumed>) = 0 [pid 3372] exit_group(0) = ? [pid 3373] <... futex resumed>) = ? [pid 3374] <... futex resumed>) = ? [pid 3374] +++ exited with 0 +++ [pid 3373] +++ exited with 0 +++ [pid 3372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3372, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3375 ./strace-static-x86_64: Process 3375 attached [pid 3375] set_robust_list(0x5555564465e0, 24) = 0 [pid 3375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3375] setpgid(0, 0) = 0 [pid 3375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3375] write(3, "1000", 4) = 4 [pid 3375] close(3) = 0 [pid 3375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3375] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3375] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3376 attached , parent_tid=[3376], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3376 [pid 3375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3376] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3376] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3375] <... futex resumed>) = 0 [pid 3375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3376] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3375] <... futex resumed>) = 0 [pid 3375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3376] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3375] <... futex resumed>) = 0 [pid 3375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3375] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3375] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3375] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3376] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3377 attached [pid 3377] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3375] <... clone resumed>, parent_tid=[3377], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3377 [pid 3375] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3377] <... futex resumed>) = 0 [pid 3377] umount2("./file0", MNT_DETACH) = 0 [pid 3377] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3375] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3376] <... umount2 resumed>) = 0 [pid 3376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3375] exit_group(0 [pid 3376] <... futex resumed>) = ? [pid 3375] <... exit_group resumed>) = ? [pid 3377] <... futex resumed>) = ? [pid 3377] +++ exited with 0 +++ [pid 3376] +++ exited with 0 +++ [pid 3375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3378 attached , child_tidptr=0x5555564465d0) = 3378 [pid 3378] set_robust_list(0x5555564465e0, 24) = 0 [pid 3378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3378] setpgid(0, 0) = 0 [pid 3378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3378] write(3, "1000", 4) = 4 [pid 3378] close(3) = 0 [pid 3378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3378] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3378] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3379 attached , parent_tid=[3379], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3379 [pid 3379] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3379] <... futex resumed>) = 0 [pid 3379] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3379] <... futex resumed>) = 0 [pid 3379] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3379] <... mount resumed>) = 0 [pid 3379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3379] <... futex resumed>) = 0 [pid 3379] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3379] <... mount resumed>) = 0 [pid 3379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3378] <... futex resumed>) = 0 [pid 3378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3379] <... futex resumed>) = 0 [pid 3379] umount2("./file0", MNT_DETACH) = 0 [pid 3378] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3378] <... futex resumed>) = 0 [pid 3378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3378] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3378] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3380 attached , parent_tid=[3380], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3380 [pid 3378] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3378] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3380] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3380] umount2("./file0", MNT_DETACH) = 0 [pid 3380] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3378] <... futex resumed>) = 0 [pid 3378] exit_group(0) = ? [pid 3379] <... futex resumed>) = ? [pid 3379] +++ exited with 0 +++ [pid 3380] +++ exited with 0 +++ [pid 3378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3381 ./strace-static-x86_64: Process 3381 attached [pid 3381] set_robust_list(0x5555564465e0, 24) = 0 [pid 3381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3381] setpgid(0, 0) = 0 [pid 3381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3381] write(3, "1000", 4) = 4 [pid 3381] close(3) = 0 [pid 3381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3381] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3381] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3382], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3382 [pid 3381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3382 attached [pid 3382] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3382] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3381] <... futex resumed>) = 0 [pid 3381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3382] <... futex resumed>) = 1 [pid 3382] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3381] <... futex resumed>) = 0 [pid 3382] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3382] <... mount resumed>) = 0 [pid 3382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3381] <... futex resumed>) = 0 [pid 3381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3381] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3382] umount2("./file0", MNT_DETACH [pid 3381] <... mprotect resumed>) = 0 [pid 3381] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3382] <... umount2 resumed>) = 0 [pid 3381] <... clone resumed>, parent_tid=[3383], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3383 [pid 3381] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3381] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3383 attached [pid 3383] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3383] umount2("./file0", MNT_DETACH [pid 3382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3383] <... umount2 resumed>) = 0 [pid 3382] <... futex resumed>) = 0 [pid 3383] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3381] <... futex resumed>) = 0 [pid 3381] exit_group(0 [pid 3382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3381] <... exit_group resumed>) = ? [pid 3382] <... futex resumed>) = ? [pid 3383] <... futex resumed>) = ? [pid 3382] +++ exited with 0 +++ [pid 3383] +++ exited with 0 +++ [pid 3381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3381, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3384 attached , child_tidptr=0x5555564465d0) = 3384 [pid 3384] set_robust_list(0x5555564465e0, 24) = 0 [pid 3384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3384] setpgid(0, 0) = 0 [pid 3384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3384] write(3, "1000", 4) = 4 [pid 3384] close(3) = 0 [pid 3384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3384] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3384] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3385 attached , parent_tid=[3385], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3385 [pid 3385] set_robust_list(0x7fc84e09f9e0, 24 [pid 3384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3385] <... set_robust_list resumed>) = 0 [pid 3385] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3384] <... futex resumed>) = 0 [pid 3385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3384] <... futex resumed>) = 0 [pid 3385] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3385] <... mount resumed>) = 0 [pid 3385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3384] <... futex resumed>) = 0 [pid 3384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3385] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3384] <... futex resumed>) = 0 [pid 3384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3384] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3385] umount2("./file0", MNT_DETACH [pid 3384] <... mmap resumed>) = 0x7fc84e05e000 [pid 3384] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3384] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3386], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3386 [pid 3384] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3384] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3386 attached [pid 3386] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3386] umount2("./file0", MNT_DETACH [pid 3385] <... umount2 resumed>) = 0 [pid 3386] <... umount2 resumed>) = 0 [pid 3386] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3384] <... futex resumed>) = 0 [pid 3386] <... futex resumed>) = 1 [pid 3386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3384] exit_group(0) = ? [pid 3386] <... futex resumed>) = ? [pid 3385] <... futex resumed>) = ? [pid 3385] +++ exited with 0 +++ [pid 3386] +++ exited with 0 +++ [pid 3384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3387 ./strace-static-x86_64: Process 3387 attached [pid 3387] set_robust_list(0x5555564465e0, 24) = 0 [pid 3387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3387] setpgid(0, 0) = 0 [pid 3387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3387] write(3, "1000", 4) = 4 [pid 3387] close(3) = 0 [pid 3387] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3387] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3387] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3388], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3388 [pid 3387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3388 attached [pid 3388] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3388] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3387] <... futex resumed>) = 0 [pid 3387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3388] <... futex resumed>) = 1 [pid 3388] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3387] <... futex resumed>) = 0 [pid 3387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3388] <... futex resumed>) = 1 [pid 3388] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3387] <... futex resumed>) = 0 [pid 3388] umount2("./file0", MNT_DETACH [pid 3387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3388] <... umount2 resumed>) = 0 [pid 3387] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3387] <... futex resumed>) = 0 [pid 3388] <... futex resumed>) = 0 [pid 3387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3387] <... mmap resumed>) = 0x7fc84e05e000 [pid 3387] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3387] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3389], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3389 ./strace-static-x86_64: Process 3389 attached [pid 3387] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3389] set_robust_list(0x7fc84e07e9e0, 24 [pid 3387] <... futex resumed>) = 0 [pid 3387] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3389] <... set_robust_list resumed>) = 0 [pid 3389] umount2("./file0", MNT_DETACH) = 0 [pid 3389] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3387] <... futex resumed>) = 0 [pid 3389] <... futex resumed>) = 1 [pid 3387] exit_group(0 [pid 3389] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3387] <... exit_group resumed>) = ? [pid 3388] <... futex resumed>) = ? [pid 3388] +++ exited with 0 +++ [pid 3389] <... futex resumed>) = ? [pid 3389] +++ exited with 0 +++ [pid 3387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3390 ./strace-static-x86_64: Process 3390 attached [pid 3390] set_robust_list(0x5555564465e0, 24) = 0 [pid 3390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3390] setpgid(0, 0) = 0 [pid 3390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3390] write(3, "1000", 4) = 4 [pid 3390] close(3) = 0 [pid 3390] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3390] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3390] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3391 attached [pid 3391] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3390] <... clone resumed>, parent_tid=[3391], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3391 [pid 3390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3391] <... futex resumed>) = 0 [pid 3391] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3391] <... futex resumed>) = 0 [pid 3391] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3391] <... mount resumed>) = 0 [pid 3391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3391] <... futex resumed>) = 0 [pid 3391] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3391] <... mount resumed>) = 0 [pid 3391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3390] <... futex resumed>) = 0 [pid 3390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3391] <... futex resumed>) = 0 [pid 3390] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3391] umount2("./file0", MNT_DETACH [pid 3390] <... futex resumed>) = 0 [pid 3390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3391] <... umount2 resumed>) = 0 [pid 3390] <... mmap resumed>) = 0x7fc84e05e000 [pid 3391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3390] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3391] <... futex resumed>) = 0 [pid 3390] <... mprotect resumed>) = 0 [pid 3390] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3392 attached [pid 3390] <... clone resumed>, parent_tid=[3392], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3392 [pid 3392] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3390] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3392] umount2("./file0", MNT_DETACH [pid 3390] <... futex resumed>) = 0 [pid 3390] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3392] <... umount2 resumed>) = 0 [pid 3392] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3390] <... futex resumed>) = 0 [pid 3392] <... futex resumed>) = 1 [pid 3392] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3390] exit_group(0) = ? [pid 3391] <... futex resumed>) = 231 [pid 3392] <... futex resumed>) = ? [pid 3391] +++ exited with 0 +++ [pid 3392] +++ exited with 0 +++ [pid 3390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3393 ./strace-static-x86_64: Process 3393 attached [pid 3393] set_robust_list(0x5555564465e0, 24) = 0 [pid 3393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3393] setpgid(0, 0) = 0 [pid 3393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3393] write(3, "1000", 4) = 4 [pid 3393] close(3) = 0 [pid 3393] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3393] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3393] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3394 attached , parent_tid=[3394], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3394 [pid 3393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3394] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3394] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3393] <... futex resumed>) = 0 [pid 3394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3394] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3393] <... futex resumed>) = 0 [pid 3393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3394] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3393] <... futex resumed>) = 0 [pid 3393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3393] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3394] umount2("./file0", MNT_DETACH [pid 3393] <... futex resumed>) = 0 [pid 3393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3393] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3393] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3395], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3395 [pid 3393] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3393] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3395 attached [pid 3395] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3395] umount2("./file0", MNT_DETACH) = 0 [pid 3394] <... umount2 resumed>) = 0 [pid 3395] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3393] <... futex resumed>) = 0 [pid 3395] <... futex resumed>) = 1 [pid 3395] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3393] exit_group(0 [pid 3394] <... futex resumed>) = ? [pid 3393] <... exit_group resumed>) = ? [pid 3394] +++ exited with 0 +++ [pid 3395] <... futex resumed>) = ? [pid 3395] +++ exited with 0 +++ [pid 3393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3396 ./strace-static-x86_64: Process 3396 attached [pid 3396] set_robust_list(0x5555564465e0, 24) = 0 [pid 3396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3396] setpgid(0, 0) = 0 [pid 3396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3396] write(3, "1000", 4) = 4 [pid 3396] close(3) = 0 [pid 3396] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3396] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3396] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3397 attached , parent_tid=[3397], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3397 [pid 3396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3397] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3397] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3396] <... futex resumed>) = 0 [pid 3396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3397] <... futex resumed>) = 0 [pid 3396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3397] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3396] <... futex resumed>) = 0 [pid 3396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3397] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3396] <... futex resumed>) = 0 [pid 3396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3396] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3396] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3396] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3397] umount2("./file0", MNT_DETACH [pid 3396] <... clone resumed>, parent_tid=[3398], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3398 [pid 3396] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3396] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3398 attached [pid 3398] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3398] umount2("./file0", MNT_DETACH) = 0 [pid 3398] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3396] <... futex resumed>) = 0 [pid 3398] <... futex resumed>) = 1 [pid 3398] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3397] <... umount2 resumed>) = 0 [pid 3397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3396] exit_group(0) = ? [pid 3397] <... futex resumed>) = ? [pid 3398] <... futex resumed>) = ? [pid 3398] +++ exited with 0 +++ [pid 3397] +++ exited with 0 +++ [pid 3396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3399 ./strace-static-x86_64: Process 3399 attached [pid 3399] set_robust_list(0x5555564465e0, 24) = 0 [pid 3399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3399] setpgid(0, 0) = 0 [pid 3399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3399] write(3, "1000", 4) = 4 [pid 3399] close(3) = 0 [pid 3399] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3399] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3399] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3400 attached , parent_tid=[3400], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3400 [pid 3399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3400] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3400] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3399] <... futex resumed>) = 0 [pid 3400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3399] <... futex resumed>) = 0 [pid 3400] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3400] <... mount resumed>) = 0 [pid 3400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3399] <... futex resumed>) = 0 [pid 3399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3400] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3399] <... futex resumed>) = 0 [pid 3399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3399] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3399] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3400] umount2("./file0", MNT_DETACH [pid 3399] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3401], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3401 [pid 3399] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3399] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3401 attached [pid 3401] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3401] umount2("./file0", MNT_DETACH [pid 3400] <... umount2 resumed>) = 0 [pid 3400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3401] <... umount2 resumed>) = 0 [pid 3400] <... futex resumed>) = 0 [pid 3401] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3399] <... futex resumed>) = 0 [pid 3399] exit_group(0) = ? [pid 3401] <... futex resumed>) = ? [pid 3400] +++ exited with 0 +++ [pid 3401] +++ exited with 0 +++ [pid 3399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3402 ./strace-static-x86_64: Process 3402 attached [pid 3402] set_robust_list(0x5555564465e0, 24) = 0 [pid 3402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3402] setpgid(0, 0) = 0 [pid 3402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3402] write(3, "1000", 4) = 4 [pid 3402] close(3) = 0 [pid 3402] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3402] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3402] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3403 attached , parent_tid=[3403], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3403 [pid 3403] set_robust_list(0x7fc84e09f9e0, 24 [pid 3402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3403] <... set_robust_list resumed>) = 0 [pid 3402] <... futex resumed>) = 0 [pid 3402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3403] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3402] <... futex resumed>) = 0 [pid 3402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3403] <... futex resumed>) = 1 [pid 3403] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3402] <... futex resumed>) = 0 [pid 3403] <... futex resumed>) = 1 [pid 3402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3403] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3402] <... futex resumed>) = 0 [pid 3402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3403] <... mount resumed>) = 0 [pid 3403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3402] <... futex resumed>) = 0 [pid 3402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3403] umount2("./file0", MNT_DETACH [pid 3402] <... futex resumed>) = 0 [pid 3402] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3402] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3402] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3404], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3404 [pid 3402] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3402] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3403] <... umount2 resumed>) = 0 [pid 3403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3404 attached [pid 3404] set_robust_list(0x7fc84e07e9e0, 24 [pid 3403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3404] <... set_robust_list resumed>) = 0 [pid 3404] umount2("./file0", MNT_DETACH) = 0 [pid 3404] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3402] <... futex resumed>) = 0 [pid 3402] exit_group(0) = ? [pid 3404] <... futex resumed>) = ? [pid 3403] <... futex resumed>) = ? [pid 3403] +++ exited with 0 +++ [pid 3404] +++ exited with 0 +++ [pid 3402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3405 ./strace-static-x86_64: Process 3405 attached [pid 3405] set_robust_list(0x5555564465e0, 24) = 0 [pid 3405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3405] setpgid(0, 0) = 0 [pid 3405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3405] write(3, "1000", 4) = 4 [pid 3405] close(3) = 0 [pid 3405] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3405] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3405] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3406 attached , parent_tid=[3406], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3406 [pid 3405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3406] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3406] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3405] <... futex resumed>) = 0 [pid 3405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3406] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3405] <... futex resumed>) = 0 [pid 3405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3406] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3405] <... futex resumed>) = 0 [pid 3405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3405] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3405] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3407], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3407 [pid 3406] umount2("./file0", MNT_DETACH [pid 3405] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3405] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3407 attached [pid 3407] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3407] umount2("./file0", MNT_DETACH [pid 3406] <... umount2 resumed>) = 0 [pid 3406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3407] <... umount2 resumed>) = 0 [pid 3407] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3405] <... futex resumed>) = 0 [pid 3405] exit_group(0) = ? [pid 3406] <... futex resumed>) = ? [pid 3407] <... futex resumed>) = ? [pid 3407] +++ exited with 0 +++ [pid 3406] +++ exited with 0 +++ [pid 3405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3408 attached , child_tidptr=0x5555564465d0) = 3408 [pid 3408] set_robust_list(0x5555564465e0, 24) = 0 [pid 3408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3408] setpgid(0, 0) = 0 [pid 3408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3408] write(3, "1000", 4) = 4 [pid 3408] close(3) = 0 [pid 3408] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3408] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3408] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3409], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3409 ./strace-static-x86_64: Process 3409 attached [pid 3408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3409] set_robust_list(0x7fc84e09f9e0, 24 [pid 3408] <... futex resumed>) = 0 [pid 3409] <... set_robust_list resumed>) = 0 [pid 3409] mkdir("./file0", 000 [pid 3408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3409] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3408] <... futex resumed>) = 0 [pid 3408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3409] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3408] <... futex resumed>) = 0 [pid 3409] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3409] <... mount resumed>) = 0 [pid 3408] <... futex resumed>) = 0 [pid 3408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3408] <... futex resumed>) = 0 [pid 3408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3408] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3409] umount2("./file0", MNT_DETACH [pid 3408] <... futex resumed>) = 0 [pid 3408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3408] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3408] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3409] <... umount2 resumed>) = 0 [pid 3408] <... clone resumed>, parent_tid=[3410], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3410 [pid 3409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3408] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3410 attached [pid 3408] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3410] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3410] umount2("./file0", MNT_DETACH [pid 3409] <... futex resumed>) = 0 [pid 3410] <... umount2 resumed>) = 0 [pid 3409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3410] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3408] <... futex resumed>) = 0 [pid 3408] exit_group(0) = ? [pid 3409] <... futex resumed>) = ? [pid 3409] +++ exited with 0 +++ [pid 3410] +++ exited with 0 +++ [pid 3408] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3411 attached , child_tidptr=0x5555564465d0) = 3411 [pid 3411] set_robust_list(0x5555564465e0, 24) = 0 [pid 3411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3411] setpgid(0, 0) = 0 [pid 3411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3411] write(3, "1000", 4) = 4 [pid 3411] close(3) = 0 [pid 3411] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3411] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3411] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3412 attached , parent_tid=[3412], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3412 [pid 3411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3412] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3412] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3411] <... futex resumed>) = 0 [pid 3411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3412] <... futex resumed>) = 0 [pid 3411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3412] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3411] <... futex resumed>) = 0 [pid 3412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3412] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3411] <... futex resumed>) = 0 [pid 3412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3411] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3411] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3412] umount2("./file0", MNT_DETACH [pid 3411] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3413], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3413 [pid 3411] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3411] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3413 attached [pid 3413] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3413] umount2("./file0", MNT_DETACH [pid 3412] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 3412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3413] <... umount2 resumed>) = 0 [pid 3413] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3411] <... futex resumed>) = 0 [pid 3411] exit_group(0) = ? [pid 3413] <... futex resumed>) = ? [pid 3412] +++ exited with 0 +++ [pid 3413] +++ exited with 0 +++ [pid 3411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3414 attached , child_tidptr=0x5555564465d0) = 3414 [pid 3414] set_robust_list(0x5555564465e0, 24) = 0 [pid 3414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3414] setpgid(0, 0) = 0 [pid 3414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3414] write(3, "1000", 4) = 4 [pid 3414] close(3) = 0 [pid 3414] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3414] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3414] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3415], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3415 [pid 3414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3415 attached [pid 3415] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3415] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3414] <... futex resumed>) = 0 [pid 3414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3415] <... futex resumed>) = 1 [pid 3415] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3414] <... futex resumed>) = 0 [pid 3414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3415] <... futex resumed>) = 1 [pid 3415] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3414] <... futex resumed>) = 0 [pid 3414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3414] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3415] umount2("./file0", MNT_DETACH [pid 3414] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3415] <... umount2 resumed>) = 0 [pid 3414] <... clone resumed>, parent_tid=[3416], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3416 [pid 3415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3414] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3414] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3416 attached [pid 3416] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3416] umount2("./file0", MNT_DETACH [pid 3415] <... futex resumed>) = 0 [pid 3416] <... umount2 resumed>) = 0 [pid 3416] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3414] <... futex resumed>) = 0 [pid 3414] exit_group(0) = ? [pid 3415] +++ exited with 0 +++ [pid 3416] <... futex resumed>) = ? [pid 3416] +++ exited with 0 +++ [pid 3414] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3417 attached , child_tidptr=0x5555564465d0) = 3417 [pid 3417] set_robust_list(0x5555564465e0, 24) = 0 [pid 3417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3417] setpgid(0, 0) = 0 [pid 3417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3417] write(3, "1000", 4) = 4 [pid 3417] close(3) = 0 [pid 3417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3417] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3417] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3418 attached , parent_tid=[3418], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3418 [pid 3418] set_robust_list(0x7fc84e09f9e0, 24 [pid 3417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3418] <... set_robust_list resumed>) = 0 [pid 3417] <... futex resumed>) = 0 [pid 3417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3418] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3417] <... futex resumed>) = 0 [pid 3417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3418] <... futex resumed>) = 1 [pid 3418] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3417] <... futex resumed>) = 0 [pid 3417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3418] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3417] <... futex resumed>) = 0 [pid 3417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3418] <... mount resumed>) = 0 [pid 3418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3417] <... futex resumed>) = 0 [pid 3418] umount2("./file0", MNT_DETACH [pid 3417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3417] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3417] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3418] <... umount2 resumed>) = 0 [pid 3417] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3419 attached ) = 0 [pid 3417] <... clone resumed>, parent_tid=[3419], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3419 [pid 3419] set_robust_list(0x7fc84e07e9e0, 24 [pid 3418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3417] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3419] <... set_robust_list resumed>) = 0 [pid 3417] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3419] umount2("./file0", MNT_DETACH) = 0 [pid 3419] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3417] <... futex resumed>) = 0 [pid 3419] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3417] exit_group(0) = ? [pid 3418] <... futex resumed>) = ? [pid 3419] <... futex resumed>) = ? [pid 3419] +++ exited with 0 +++ [pid 3418] +++ exited with 0 +++ [pid 3417] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3420 attached , child_tidptr=0x5555564465d0) = 3420 [pid 3420] set_robust_list(0x5555564465e0, 24) = 0 [pid 3420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3420] setpgid(0, 0) = 0 [pid 3420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3420] write(3, "1000", 4) = 4 [pid 3420] close(3) = 0 [pid 3420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3420] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3420] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3421], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3421 [pid 3420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3421 attached [pid 3421] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3421] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3420] <... futex resumed>) = 0 [pid 3420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3421] <... futex resumed>) = 1 [pid 3421] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3420] <... futex resumed>) = 0 [pid 3420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3421] <... futex resumed>) = 1 [pid 3421] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3420] <... futex resumed>) = 0 [pid 3421] umount2("./file0", MNT_DETACH [pid 3420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3420] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3420] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3420] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3422 attached [pid 3422] set_robust_list(0x7fc84e07e9e0, 24 [pid 3420] <... clone resumed>, parent_tid=[3422], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3422 [pid 3422] <... set_robust_list resumed>) = 0 [pid 3420] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3422] umount2("./file0", MNT_DETACH [pid 3420] <... futex resumed>) = 0 [pid 3420] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3422] <... umount2 resumed>) = 0 [pid 3422] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3420] <... futex resumed>) = 0 [pid 3422] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3421] <... umount2 resumed>) = 0 [pid 3421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3420] exit_group(0) = ? [pid 3422] <... futex resumed>) = ? [pid 3422] +++ exited with 0 +++ [pid 3421] <... futex resumed>) = ? [pid 3421] +++ exited with 0 +++ [pid 3420] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3420, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3423 ./strace-static-x86_64: Process 3423 attached [pid 3423] set_robust_list(0x5555564465e0, 24) = 0 [pid 3423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3423] setpgid(0, 0) = 0 [pid 3423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3423] write(3, "1000", 4) = 4 [pid 3423] close(3) = 0 [pid 3423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3423] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3423] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3424], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3424 [pid 3423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3424 attached [pid 3424] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3424] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3423] <... futex resumed>) = 0 [pid 3424] <... futex resumed>) = 1 [pid 3423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3424] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3423] <... futex resumed>) = 0 [pid 3423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3424] <... mount resumed>) = 0 [pid 3424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3423] <... futex resumed>) = 0 [pid 3423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3424] <... futex resumed>) = 1 [pid 3424] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3423] <... futex resumed>) = 0 [pid 3423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3423] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3424] <... futex resumed>) = 1 [pid 3423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3424] umount2("./file0", MNT_DETACH [pid 3423] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3423] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3425], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3425 [pid 3423] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3423] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3424] <... umount2 resumed>) = 0 [pid 3424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3425 attached [pid 3425] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3425] umount2("./file0", MNT_DETACH) = 0 [pid 3425] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3423] <... futex resumed>) = 0 [pid 3425] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3423] exit_group(0) = ? [pid 3424] <... futex resumed>) = 231 [pid 3425] <... futex resumed>) = ? [pid 3424] +++ exited with 0 +++ [pid 3425] +++ exited with 0 +++ [pid 3423] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3423, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3426 attached , child_tidptr=0x5555564465d0) = 3426 [pid 3426] set_robust_list(0x5555564465e0, 24) = 0 [pid 3426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3426] setpgid(0, 0) = 0 [pid 3426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3426] write(3, "1000", 4) = 4 [pid 3426] close(3) = 0 [pid 3426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3426] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3426] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3427], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3427 [pid 3426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3427 attached [pid 3427] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3427] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3426] <... futex resumed>) = 0 [pid 3426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3427] <... futex resumed>) = 1 [pid 3427] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3426] <... futex resumed>) = 0 [pid 3426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3427] <... futex resumed>) = 1 [pid 3427] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3426] <... futex resumed>) = 0 [pid 3426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3426] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3426] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3428], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3428 [pid 3426] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3426] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3427] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3428 attached [pid 3428] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3428] umount2("./file0", MNT_DETACH [pid 3427] <... umount2 resumed>) = 0 [pid 3428] <... umount2 resumed>) = 0 [pid 3427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3428] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3426] <... futex resumed>) = 0 [pid 3426] exit_group(0) = ? [pid 3427] <... futex resumed>) = ? [pid 3428] <... futex resumed>) = ? [pid 3428] +++ exited with 0 +++ [pid 3427] +++ exited with 0 +++ [pid 3426] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3426, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3429 attached , child_tidptr=0x5555564465d0) = 3429 [pid 3429] set_robust_list(0x5555564465e0, 24) = 0 [pid 3429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3429] setpgid(0, 0) = 0 [pid 3429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3429] write(3, "1000", 4) = 4 [pid 3429] close(3) = 0 [pid 3429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3429] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3429] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3430 attached [pid 3430] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] <... clone resumed>, parent_tid=[3430], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3430 [pid 3429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3430] <... futex resumed>) = 0 [pid 3430] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3430] <... futex resumed>) = 0 [pid 3430] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3430] <... futex resumed>) = 0 [pid 3430] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3430] <... futex resumed>) = 0 [pid 3429] <... futex resumed>) = 1 [pid 3430] umount2("./file0", MNT_DETACH [pid 3429] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3430] <... umount2 resumed>) = 0 [pid 3429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3429] <... mmap resumed>) = 0x7fc84e05e000 [pid 3430] <... futex resumed>) = 0 [pid 3429] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] <... mprotect resumed>) = 0 [pid 3429] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3431 attached , parent_tid=[3431], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3431 [pid 3431] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3431] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3431] <... futex resumed>) = 0 [pid 3429] <... futex resumed>) = 1 [pid 3431] umount2("./file0", MNT_DETACH [pid 3429] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3431] <... umount2 resumed>) = 0 [pid 3431] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3429] <... futex resumed>) = 0 [pid 3431] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3429] exit_group(0 [pid 3431] <... futex resumed>) = ? [pid 3430] <... futex resumed>) = ? [pid 3429] <... exit_group resumed>) = ? [pid 3430] +++ exited with 0 +++ [pid 3431] +++ exited with 0 +++ [pid 3429] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3432 ./strace-static-x86_64: Process 3432 attached [pid 3432] set_robust_list(0x5555564465e0, 24) = 0 [pid 3432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3432] setpgid(0, 0) = 0 [pid 3432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3432] write(3, "1000", 4) = 4 [pid 3432] close(3) = 0 [pid 3432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3432] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3432] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3433 attached , parent_tid=[3433], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3433 [pid 3433] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3433] <... futex resumed>) = 0 [pid 3432] <... futex resumed>) = 1 [pid 3433] mkdir("./file0", 000 [pid 3432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3433] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3433] <... futex resumed>) = 0 [pid 3433] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3432] <... futex resumed>) = 0 [pid 3432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3433] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3432] <... futex resumed>) = 0 [pid 3432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3432] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3433] umount2("./file0", MNT_DETACH [pid 3432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3432] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3432] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3435], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3435 [pid 3432] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3432] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3433] <... umount2 resumed>) = 0 [pid 3433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3435 attached [pid 3435] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3435] umount2("./file0", MNT_DETACH) = 0 [pid 3435] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3432] <... futex resumed>) = 0 [pid 3432] exit_group(0) = ? [pid 3433] <... futex resumed>) = ? [pid 3435] <... futex resumed>) = 231 [pid 3433] +++ exited with 0 +++ [pid 3435] +++ exited with 0 +++ [pid 3432] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3436 ./strace-static-x86_64: Process 3436 attached [pid 3436] set_robust_list(0x5555564465e0, 24) = 0 [pid 3436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3436] setpgid(0, 0) = 0 [pid 3436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3436] write(3, "1000", 4) = 4 [pid 3436] close(3) = 0 [pid 3436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3436] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3436] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3437 attached , parent_tid=[3437], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3437 [pid 3437] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3437] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3436] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3437] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3436] <... futex resumed>) = 0 [pid 3437] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3437] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3436] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3437] <... futex resumed>) = 0 [pid 3437] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3436] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3437] <... futex resumed>) = 0 [pid 3436] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3437] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3437] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3437] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3436] <... futex resumed>) = 0 [pid 3436] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3437] <... futex resumed>) = 0 [pid 3437] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3437] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3437] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3436] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3436] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3437] <... futex resumed>) = 0 [pid 3437] umount2("./file0", MNT_DETACH [pid 3436] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3437] <... umount2 resumed>) = 0 [pid 3436] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3437] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3436] <... mprotect resumed>) = 0 [pid 3437] <... futex resumed>) = 0 [pid 3437] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3436] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3438 attached [pid 3438] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3438] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3436] <... clone resumed>, parent_tid=[3438], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3438 [pid 3436] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3438] <... futex resumed>) = 0 [pid 3438] umount2("./file0", MNT_DETACH [pid 3436] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3438] <... umount2 resumed>) = 0 [pid 3438] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3436] <... futex resumed>) = 0 [pid 3436] exit_group(0 [pid 3437] <... futex resumed>) = ? [pid 3437] +++ exited with 0 +++ [pid 3436] <... exit_group resumed>) = ? [pid 3438] +++ exited with 0 +++ [pid 3436] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3436, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3439 ./strace-static-x86_64: Process 3439 attached [pid 3439] set_robust_list(0x5555564465e0, 24) = 0 [pid 3439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3439] setpgid(0, 0) = 0 [pid 3439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3439] write(3, "1000", 4) = 4 [pid 3439] close(3) = 0 [pid 3439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3439] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3439] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3440 attached , parent_tid=[3440], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3440 [pid 3440] set_robust_list(0x7fc84e09f9e0, 24 [pid 3439] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3440] <... set_robust_list resumed>) = 0 [pid 3440] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3440] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3439] <... futex resumed>) = 0 [pid 3439] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3440] <... futex resumed>) = 1 [pid 3440] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3440] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3439] <... futex resumed>) = 0 [pid 3439] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3440] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3440] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3439] <... futex resumed>) = 0 [pid 3439] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3439] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3439] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3441], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3441 [pid 3439] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3439] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3441 attached [pid 3441] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3441] umount2("./file0", MNT_DETACH [pid 3440] umount2("./file0", MNT_DETACH) = 0 [pid 3440] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3441] <... umount2 resumed>) = 0 [pid 3440] <... futex resumed>) = 0 [pid 3441] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3439] <... futex resumed>) = 0 [pid 3439] exit_group(0) = ? [pid 3441] <... futex resumed>) = ? [pid 3441] +++ exited with 0 +++ [pid 3440] +++ exited with 0 +++ [pid 3439] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3439, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3442 attached , child_tidptr=0x5555564465d0) = 3442 [pid 3442] set_robust_list(0x5555564465e0, 24) = 0 [pid 3442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3442] setpgid(0, 0) = 0 [pid 3442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3442] write(3, "1000", 4) = 4 [pid 3442] close(3) = 0 [pid 3442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3442] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3442] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3443 attached , parent_tid=[3443], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3443 [pid 3443] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3443] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3442] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3443] <... futex resumed>) = 0 [pid 3443] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3443] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3442] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3443] <... futex resumed>) = 0 [pid 3443] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3442] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3442] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3443] <... futex resumed>) = 0 [pid 3442] <... futex resumed>) = 1 [pid 3443] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3442] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3443] <... mount resumed>) = 0 [pid 3443] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3442] <... futex resumed>) = 0 [pid 3442] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3442] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3443] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3443] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3442] <... futex resumed>) = 0 [pid 3442] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3442] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3442] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3443] umount2("./file0", MNT_DETACH [pid 3442] <... mprotect resumed>) = 0 [pid 3443] <... umount2 resumed>) = 0 [pid 3442] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3443] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3442] <... clone resumed>, parent_tid=[3444], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3444 [pid 3442] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3442] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3443] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3444 attached [pid 3444] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3444] umount2("./file0", MNT_DETACH [pid 3443] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3444] <... umount2 resumed>) = 0 [pid 3444] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3442] <... futex resumed>) = 0 [pid 3444] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3442] exit_group(0) = ? [pid 3444] <... futex resumed>) = 231 [pid 3443] <... futex resumed>) = ? [pid 3443] +++ exited with 0 +++ [pid 3444] +++ exited with 0 +++ [pid 3442] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3442, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3445 ./strace-static-x86_64: Process 3445 attached [pid 3445] set_robust_list(0x5555564465e0, 24) = 0 [pid 3445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3445] setpgid(0, 0) = 0 [pid 3445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3445] write(3, "1000", 4) = 4 [pid 3445] close(3) = 0 [pid 3445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3445] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3445] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3446 attached , parent_tid=[3446], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3446 [pid 3445] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3446] set_robust_list(0x7fc84e09f9e0, 24 [pid 3445] <... futex resumed>) = 0 [pid 3446] <... set_robust_list resumed>) = 0 [pid 3445] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3446] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3446] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3446] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3445] <... futex resumed>) = 0 [pid 3445] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3446] <... futex resumed>) = 0 [pid 3445] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3446] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3446] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3445] <... futex resumed>) = 0 [pid 3445] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3445] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3446] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3446] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3445] <... futex resumed>) = 0 [pid 3445] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3445] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3445] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3445] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3446] umount2("./file0", MNT_DETACH [pid 3445] <... clone resumed>, parent_tid=[3447], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3447 [pid 3445] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3445] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3447 attached [pid 3447] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3447] umount2("./file0", MNT_DETACH) = 0 [pid 3447] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3446] <... umount2 resumed>) = 0 [pid 3445] <... futex resumed>) = 0 [pid 3447] <... futex resumed>) = 1 [pid 3446] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3447] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3446] <... futex resumed>) = 0 [pid 3446] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3445] exit_group(0) = ? [pid 3446] <... futex resumed>) = ? [pid 3447] <... futex resumed>) = ? [pid 3447] +++ exited with 0 +++ [pid 3446] +++ exited with 0 +++ [pid 3445] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3445, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3448 attached , child_tidptr=0x5555564465d0) = 3448 [pid 3448] set_robust_list(0x5555564465e0, 24) = 0 [pid 3448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3448] setpgid(0, 0) = 0 [pid 3448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3448] write(3, "1000", 4) = 4 [pid 3448] close(3) = 0 [pid 3448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3448] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3448] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3449], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3449 ./strace-static-x86_64: Process 3449 attached [pid 3448] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3448] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3449] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3449] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3449] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3449] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3448] <... futex resumed>) = 0 [pid 3448] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3449] <... futex resumed>) = 0 [pid 3449] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3448] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3449] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3449] <... futex resumed>) = 0 [pid 3448] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3449] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3448] <... futex resumed>) = 0 [pid 3449] <... mount resumed>) = 0 [pid 3448] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3449] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3448] <... futex resumed>) = 0 [pid 3449] umount2("./file0", MNT_DETACH [pid 3448] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3448] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3449] <... umount2 resumed>) = 0 [pid 3449] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3448] <... mmap resumed>) = 0x7fc84e05e000 [pid 3449] <... futex resumed>) = 0 [pid 3448] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3449] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3448] <... mprotect resumed>) = 0 [pid 3448] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3450 attached , parent_tid=[3450], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3450 [pid 3448] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3448] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3450] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3450] umount2("./file0", MNT_DETACH) = 0 [pid 3450] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3448] <... futex resumed>) = 0 [pid 3448] exit_group(0) = ? [pid 3450] +++ exited with 0 +++ [pid 3449] <... futex resumed>) = ? [pid 3449] +++ exited with 0 +++ [pid 3448] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3448, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3451 ./strace-static-x86_64: Process 3451 attached [pid 3451] set_robust_list(0x5555564465e0, 24) = 0 [pid 3451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3451] setpgid(0, 0) = 0 [pid 3451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3451] write(3, "1000", 4) = 4 [pid 3451] close(3) = 0 [pid 3451] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3451] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3451] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3451] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3452 attached , parent_tid=[3452], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3452 [pid 3452] set_robust_list(0x7fc84e09f9e0, 24 [pid 3451] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3452] <... set_robust_list resumed>) = 0 [pid 3452] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3452] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] <... futex resumed>) = 1 [pid 3452] <... futex resumed>) = 0 [pid 3452] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3451] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3452] <... futex resumed>) = 0 [pid 3452] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3451] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3452] <... mount resumed>) = 0 [pid 3452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3452] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3451] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3452] <... futex resumed>) = 0 [pid 3452] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3451] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3452] <... mount resumed>) = 0 [pid 3452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3452] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] <... futex resumed>) = 0 [pid 3451] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3452] <... futex resumed>) = 0 [pid 3452] umount2("./file0", MNT_DETACH [pid 3451] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3451] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3452] <... umount2 resumed>) = 0 [pid 3452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3452] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] <... mmap resumed>) = 0x7fc84e05e000 [pid 3451] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3451] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3453 attached , parent_tid=[3453], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3453 [pid 3453] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3453] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3453] <... futex resumed>) = 0 [pid 3453] umount2("./file0", MNT_DETACH) = 0 [pid 3453] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3453] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3451] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3451] exit_group(0) = ? [pid 3453] <... futex resumed>) = ? [pid 3452] <... futex resumed>) = ? [pid 3452] +++ exited with 0 +++ [pid 3453] +++ exited with 0 +++ [pid 3451] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3451, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3454 ./strace-static-x86_64: Process 3454 attached [pid 3454] set_robust_list(0x5555564465e0, 24) = 0 [pid 3454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3454] setpgid(0, 0) = 0 [pid 3454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3454] write(3, "1000", 4) = 4 [pid 3454] close(3) = 0 [pid 3454] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3454] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3454] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3455 attached , parent_tid=[3455], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3455 [pid 3454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3455] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3455] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3454] <... futex resumed>) = 0 [pid 3454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3455] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3454] <... futex resumed>) = 0 [pid 3454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3455] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3454] <... futex resumed>) = 0 [pid 3454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3454] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3454] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3455] umount2("./file0", MNT_DETACH [pid 3454] <... clone resumed>, parent_tid=[3456], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3456 [pid 3454] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3454] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3456 attached [pid 3456] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3456] umount2("./file0", MNT_DETACH) = 0 [pid 3456] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3454] <... futex resumed>) = 0 [pid 3456] <... futex resumed>) = 1 [pid 3456] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3455] <... umount2 resumed>) = 0 [pid 3455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3455] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3454] exit_group(0) = ? [pid 3456] <... futex resumed>) = ? [pid 3456] +++ exited with 0 +++ [pid 3455] <... futex resumed>) = ? [pid 3455] +++ exited with 0 +++ [pid 3454] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3454, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3457 attached , child_tidptr=0x5555564465d0) = 3457 [pid 3457] set_robust_list(0x5555564465e0, 24) = 0 [pid 3457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3457] setpgid(0, 0) = 0 [pid 3457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3457] write(3, "1000", 4) = 4 [pid 3457] close(3) = 0 [pid 3457] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3457] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3457] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3457] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3458 attached , parent_tid=[3458], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3458 [pid 3458] set_robust_list(0x7fc84e09f9e0, 24 [pid 3457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3457] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3458] <... set_robust_list resumed>) = 0 [pid 3458] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3457] <... futex resumed>) = 0 [pid 3458] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3458] <... futex resumed>) = 0 [pid 3457] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3458] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3457] <... futex resumed>) = 0 [pid 3458] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3457] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3458] <... mount resumed>) = 0 [pid 3458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3457] <... futex resumed>) = 0 [pid 3457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3457] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3457] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3458] umount2("./file0", MNT_DETACH [pid 3457] <... mmap resumed>) = 0x7fc84e05e000 [pid 3457] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3457] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3459], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3459 [pid 3457] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3457] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3459 attached [pid 3458] <... umount2 resumed>) = 0 [pid 3459] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3459] umount2("./file0", MNT_DETACH [pid 3458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3459] <... umount2 resumed>) = 0 [pid 3459] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3457] <... futex resumed>) = 0 [pid 3459] <... futex resumed>) = 1 [pid 3457] exit_group(0 [pid 3459] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3457] <... exit_group resumed>) = ? [pid 3459] <... futex resumed>) = ? [pid 3459] +++ exited with 0 +++ [pid 3458] <... futex resumed>) = ? [pid 3458] +++ exited with 0 +++ [pid 3457] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3457, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3460 attached , child_tidptr=0x5555564465d0) = 3460 [pid 3460] set_robust_list(0x5555564465e0, 24) = 0 [pid 3460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3460] setpgid(0, 0) = 0 [pid 3460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3460] write(3, "1000", 4) = 4 [pid 3460] close(3) = 0 [pid 3460] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3460] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3460] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3461], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3461 ./strace-static-x86_64: Process 3461 attached [pid 3460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3460] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3461] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3461] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3460] <... futex resumed>) = 0 [pid 3460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3460] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3461] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3460] <... futex resumed>) = 0 [pid 3460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3460] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3461] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3460] <... futex resumed>) = 0 [pid 3461] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3461] umount2("./file0", MNT_DETACH [pid 3460] <... futex resumed>) = 0 [pid 3461] <... umount2 resumed>) = 0 [pid 3460] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3460] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3461] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3460] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3462], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3462 [pid 3460] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3460] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3462 attached [pid 3462] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3462] umount2("./file0", MNT_DETACH) = 0 [pid 3462] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3460] <... futex resumed>) = 0 [pid 3460] exit_group(0) = ? [pid 3461] <... futex resumed>) = ? [pid 3462] <... futex resumed>) = ? [pid 3462] +++ exited with 0 +++ [pid 3461] +++ exited with 0 +++ [pid 3460] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3460, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3463 ./strace-static-x86_64: Process 3463 attached [pid 3463] set_robust_list(0x5555564465e0, 24) = 0 [pid 3463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3463] setpgid(0, 0) = 0 [pid 3463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3463] write(3, "1000", 4) = 4 [pid 3463] close(3) = 0 [pid 3463] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3463] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3463] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3464 attached , parent_tid=[3464], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3464 [pid 3464] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3464] <... futex resumed>) = 0 [pid 3464] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3463] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3464] <... futex resumed>) = 0 [pid 3463] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3464] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3463] <... futex resumed>) = 0 [pid 3464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3463] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3464] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3463] <... futex resumed>) = 0 [pid 3464] umount2("./file0", MNT_DETACH [pid 3463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3463] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3464] <... umount2 resumed>) = 0 [pid 3464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3463] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3464] <... futex resumed>) = 0 [pid 3463] <... mprotect resumed>) = 0 [pid 3464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3463] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3465 attached [pid 3465] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3465] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3463] <... clone resumed>, parent_tid=[3465], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3465 [pid 3463] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3465] <... futex resumed>) = 0 [pid 3465] umount2("./file0", MNT_DETACH) = 0 [pid 3465] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3465] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3463] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3463] exit_group(0) = ? [pid 3465] <... futex resumed>) = ? [pid 3464] <... futex resumed>) = ? [pid 3465] +++ exited with 0 +++ [pid 3464] +++ exited with 0 +++ [pid 3463] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3463, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3466 attached , child_tidptr=0x5555564465d0) = 3466 [pid 3466] set_robust_list(0x5555564465e0, 24) = 0 [pid 3466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3466] setpgid(0, 0) = 0 [pid 3466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3466] write(3, "1000", 4) = 4 [pid 3466] close(3) = 0 [pid 3466] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3466] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3466] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3467 attached , parent_tid=[3467], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3467 [pid 3466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3467] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3467] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3466] <... futex resumed>) = 0 [pid 3466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3467] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3466] <... futex resumed>) = 0 [pid 3466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3467] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3466] <... futex resumed>) = 0 [pid 3466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3466] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3466] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3468], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3468 [pid 3467] umount2("./file0", MNT_DETACH [pid 3466] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3466] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3468 attached [pid 3468] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3468] umount2("./file0", MNT_DETACH) = 0 [pid 3468] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3466] <... futex resumed>) = 0 [pid 3468] <... futex resumed>) = 1 [pid 3468] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3467] <... umount2 resumed>) = 0 [pid 3467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3467] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3466] exit_group(0) = ? [pid 3468] <... futex resumed>) = ? [pid 3467] <... futex resumed>) = 231 [pid 3468] +++ exited with 0 +++ [pid 3467] +++ exited with 0 +++ [pid 3466] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3466, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3469 attached , child_tidptr=0x5555564465d0) = 3469 [pid 3469] set_robust_list(0x5555564465e0, 24) = 0 [pid 3469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3469] setpgid(0, 0) = 0 [pid 3469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3469] write(3, "1000", 4) = 4 [pid 3469] close(3) = 0 [pid 3469] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3469] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3469] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3469] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3470 attached , parent_tid=[3470], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3470 [pid 3470] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3470] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3470] <... futex resumed>) = 0 [pid 3469] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3470] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3470] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3469] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3470] <... futex resumed>) = 0 [pid 3469] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3470] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3469] <... futex resumed>) = 0 [pid 3470] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3469] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3470] <... mount resumed>) = 0 [pid 3470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3469] <... futex resumed>) = 0 [pid 3469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3470] umount2("./file0", MNT_DETACH [pid 3469] <... futex resumed>) = 0 [pid 3469] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3469] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3469] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3469] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3471], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3471 [pid 3469] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3469] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3471 attached [pid 3471] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3471] umount2("./file0", MNT_DETACH) = 0 [pid 3471] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3469] <... futex resumed>) = 0 [pid 3471] <... futex resumed>) = 1 [pid 3471] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3470] <... umount2 resumed>) = 0 [pid 3470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3470] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3469] exit_group(0) = ? [pid 3470] <... futex resumed>) = ? [pid 3471] <... futex resumed>) = ? [pid 3470] +++ exited with 0 +++ [pid 3471] +++ exited with 0 +++ [pid 3469] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3469, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3472 attached , child_tidptr=0x5555564465d0) = 3472 [pid 3472] set_robust_list(0x5555564465e0, 24) = 0 [pid 3472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3472] setpgid(0, 0) = 0 [pid 3472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3472] write(3, "1000", 4) = 4 [pid 3472] close(3) = 0 [pid 3472] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3472] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3472] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3473 attached , parent_tid=[3473], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3473 [pid 3472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3472] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3473] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3473] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3472] <... futex resumed>) = 0 [pid 3472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3473] <... futex resumed>) = 0 [pid 3473] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3472] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3473] <... mount resumed>) = 0 [pid 3473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3473] <... futex resumed>) = 0 [pid 3473] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3472] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3473] <... mount resumed>) = 0 [pid 3473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3472] <... futex resumed>) = 0 [pid 3472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3472] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3472] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3472] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3473] umount2("./file0", MNT_DETACH [pid 3472] <... clone resumed>, parent_tid=[3474], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3474 [pid 3472] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3472] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3474 attached [pid 3474] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3474] umount2("./file0", MNT_DETACH) = 0 [pid 3474] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3472] <... futex resumed>) = 0 [pid 3474] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3473] <... umount2 resumed>) = 0 [pid 3473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3472] exit_group(0) = ? [pid 3474] <... futex resumed>) = ? [pid 3473] <... futex resumed>) = ? [pid 3474] +++ exited with 0 +++ [pid 3473] +++ exited with 0 +++ [pid 3472] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3472, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3475 attached , child_tidptr=0x5555564465d0) = 3475 [pid 3475] set_robust_list(0x5555564465e0, 24) = 0 [pid 3475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3475] setpgid(0, 0) = 0 [pid 3475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3475] write(3, "1000", 4) = 4 [pid 3475] close(3) = 0 [pid 3475] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3475] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3475] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3476], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3476 [pid 3475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3476 attached [pid 3476] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3476] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3475] <... futex resumed>) = 0 [pid 3475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3476] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3475] <... futex resumed>) = 0 [pid 3475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3476] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3475] <... futex resumed>) = 0 [pid 3476] umount2("./file0", MNT_DETACH [pid 3475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3475] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3475] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3477], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3477 [pid 3475] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3475] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3477 attached [pid 3477] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3477] umount2("./file0", MNT_DETACH [pid 3476] <... umount2 resumed>) = 0 [pid 3476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3477] <... umount2 resumed>) = 0 [pid 3477] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3475] <... futex resumed>) = 0 [pid 3475] exit_group(0) = ? [pid 3476] <... futex resumed>) = ? [pid 3476] +++ exited with 0 +++ [pid 3477] +++ exited with 0 +++ [pid 3475] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3475, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3478 ./strace-static-x86_64: Process 3478 attached [pid 3478] set_robust_list(0x5555564465e0, 24) = 0 [pid 3478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3478] setpgid(0, 0) = 0 [pid 3478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3478] write(3, "1000", 4) = 4 [pid 3478] close(3) = 0 [pid 3478] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3478] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3478] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3479 attached , parent_tid=[3479], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3479 [pid 3479] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3479] <... futex resumed>) = 0 [pid 3479] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3479] <... futex resumed>) = 0 [pid 3479] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3479] <... mount resumed>) = 0 [pid 3479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3478] <... futex resumed>) = 0 [pid 3478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3479] <... futex resumed>) = 0 [pid 3479] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3479] <... mount resumed>) = 0 [pid 3479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3478] <... futex resumed>) = 0 [pid 3478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3478] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3478] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3478] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3480], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3480 [pid 3479] umount2("./file0", MNT_DETACH [pid 3478] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3478] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3479] <... umount2 resumed>) = 0 [pid 3479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3480 attached ) = 0 [pid 3480] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3480] umount2("./file0", MNT_DETACH [pid 3479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3480] <... umount2 resumed>) = 0 [pid 3480] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3478] <... futex resumed>) = 0 [pid 3478] exit_group(0) = ? [pid 3480] <... futex resumed>) = ? [pid 3480] +++ exited with 0 +++ [pid 3479] <... futex resumed>) = ? [pid 3479] +++ exited with 0 +++ [pid 3478] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3478, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3481 attached , child_tidptr=0x5555564465d0) = 3481 [pid 3481] set_robust_list(0x5555564465e0, 24) = 0 [pid 3481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3481] setpgid(0, 0) = 0 [pid 3481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3481] write(3, "1000", 4) = 4 [pid 3481] close(3) = 0 [pid 3481] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3481] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3481] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3482 attached , parent_tid=[3482], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3482 [pid 3482] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3482] <... futex resumed>) = 0 [pid 3482] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3482] <... futex resumed>) = 0 [pid 3482] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3482] <... mount resumed>) = 0 [pid 3482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3482] <... futex resumed>) = 0 [pid 3482] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3482] <... mount resumed>) = 0 [pid 3482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3481] <... futex resumed>) = 0 [pid 3481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3481] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3482] umount2("./file0", MNT_DETACH [pid 3481] <... mmap resumed>) = 0x7fc84e05e000 [pid 3481] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3481] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3483], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3483 [pid 3481] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3481] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3483 attached [pid 3483] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3482] <... umount2 resumed>) = 0 [pid 3483] umount2("./file0", MNT_DETACH) = 0 [pid 3482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3483] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3482] <... futex resumed>) = 0 [pid 3483] <... futex resumed>) = 1 [pid 3482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3481] <... futex resumed>) = 0 [pid 3481] exit_group(0) = ? [pid 3482] <... futex resumed>) = ? [pid 3483] +++ exited with 0 +++ [pid 3482] +++ exited with 0 +++ [pid 3481] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3481, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3484 attached , child_tidptr=0x5555564465d0) = 3484 [pid 3484] set_robust_list(0x5555564465e0, 24) = 0 [pid 3484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3484] setpgid(0, 0) = 0 [pid 3484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3484] write(3, "1000", 4) = 4 [pid 3484] close(3) = 0 [pid 3484] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3484] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3484] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3485], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3485 ./strace-static-x86_64: Process 3485 attached [pid 3485] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3485] <... futex resumed>) = 0 [pid 3485] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3485] <... futex resumed>) = 0 [pid 3485] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3485] <... mount resumed>) = 0 [pid 3485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3485] <... futex resumed>) = 0 [pid 3485] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3484] <... futex resumed>) = 0 [pid 3485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3485] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3484] <... futex resumed>) = 0 [pid 3485] umount2("./file0", MNT_DETACH [pid 3484] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3485] <... umount2 resumed>) = 0 [pid 3484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3484] <... mmap resumed>) = 0x7fc84e05e000 [pid 3485] <... futex resumed>) = 0 [pid 3484] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] <... mprotect resumed>) = 0 [pid 3484] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3486 attached [pid 3486] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3486] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] <... clone resumed>, parent_tid=[3486], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3486 [pid 3484] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3486] <... futex resumed>) = 0 [pid 3486] umount2("./file0", MNT_DETACH [pid 3484] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3486] <... umount2 resumed>) = 0 [pid 3486] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3486] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3484] exit_group(0) = ? [pid 3485] <... futex resumed>) = ? [pid 3486] <... futex resumed>) = ? [pid 3486] +++ exited with 0 +++ [pid 3485] +++ exited with 0 +++ [pid 3484] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3487 attached , child_tidptr=0x5555564465d0) = 3487 [pid 3487] set_robust_list(0x5555564465e0, 24) = 0 [pid 3487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3487] setpgid(0, 0) = 0 [pid 3487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3487] write(3, "1000", 4) = 4 [pid 3487] close(3) = 0 [pid 3487] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3487] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3487] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3488 attached , parent_tid=[3488], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3488 [pid 3488] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3488] <... futex resumed>) = 0 [pid 3488] mkdir("./file0", 000 [pid 3487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3488] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3487] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3488] <... futex resumed>) = 0 [pid 3488] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3488] <... mount resumed>) = 0 [pid 3488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3487] <... futex resumed>) = 0 [pid 3487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3488] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3487] <... futex resumed>) = 0 [pid 3488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3487] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3487] <... mmap resumed>) = 0x7fc84e05e000 [pid 3487] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3487] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3488] umount2("./file0", MNT_DETACH [pid 3487] <... clone resumed>, parent_tid=[3489], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3489 [pid 3487] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3487] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3489 attached [pid 3489] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3488] <... umount2 resumed>) = 0 [pid 3489] umount2("./file0", MNT_DETACH [pid 3488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3489] <... umount2 resumed>) = 0 [pid 3489] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3487] <... futex resumed>) = 0 [pid 3487] exit_group(0) = ? [pid 3488] <... futex resumed>) = ? [pid 3488] +++ exited with 0 +++ [pid 3489] <... futex resumed>) = ? [pid 3489] +++ exited with 0 +++ [pid 3487] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3487, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3490 attached , child_tidptr=0x5555564465d0) = 3490 [pid 3490] set_robust_list(0x5555564465e0, 24) = 0 [pid 3490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3490] setpgid(0, 0) = 0 [pid 3490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3490] write(3, "1000", 4) = 4 [pid 3490] close(3) = 0 [pid 3490] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3490] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [ 32.032083][ T3477] VFS: Busy inodes after unmount of ramfs. Self-destruct in 5 seconds. Have a nice day... [pid 3490] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3491 attached , parent_tid=[3491], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3491 [pid 3491] set_robust_list(0x7fc84e09f9e0, 24 [pid 3490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3491] <... set_robust_list resumed>) = 0 [pid 3490] <... futex resumed>) = 0 [pid 3490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3491] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3490] <... futex resumed>) = 0 [pid 3491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3490] <... futex resumed>) = 0 [pid 3491] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3491] <... mount resumed>) = 0 [pid 3491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3490] <... futex resumed>) = 0 [pid 3491] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3491] <... mount resumed>) = 0 [pid 3491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3490] <... futex resumed>) = 0 [pid 3491] umount2("./file0", MNT_DETACH [pid 3490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3490] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3490] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3490] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3492], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3492 [pid 3490] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3490] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3492 attached [pid 3491] <... umount2 resumed>) = 0 [pid 3491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3492] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3492] umount2("./file0", MNT_DETACH) = 0 [pid 3492] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3490] <... futex resumed>) = 0 [pid 3490] exit_group(0) = ? [pid 3491] <... futex resumed>) = ? [pid 3491] +++ exited with 0 +++ [pid 3492] <... futex resumed>) = ? [pid 3492] +++ exited with 0 +++ [pid 3490] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3490, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3493 attached , child_tidptr=0x5555564465d0) = 3493 [pid 3493] set_robust_list(0x5555564465e0, 24) = 0 [pid 3493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3493] setpgid(0, 0) = 0 [pid 3493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3493] write(3, "1000", 4) = 4 [pid 3493] close(3) = 0 [pid 3493] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3493] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3493] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3494 attached , parent_tid=[3494], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3494 [pid 3493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3494] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3494] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3493] <... futex resumed>) = 0 [pid 3493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3494] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3493] <... futex resumed>) = 0 [pid 3493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3494] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3493] <... futex resumed>) = 0 [pid 3493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3493] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3493] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3495], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3495 [pid 3493] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3493] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3495 attached [pid 3495] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3495] umount2("./file0", MNT_DETACH [pid 3494] umount2("./file0", MNT_DETACH [pid 3495] <... umount2 resumed>) = 0 [pid 3495] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3493] <... futex resumed>) = 0 [pid 3494] <... umount2 resumed>) = 0 [pid 3495] <... futex resumed>) = 1 [pid 3495] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3493] exit_group(0) = ? [pid 3494] <... futex resumed>) = ? [pid 3495] <... futex resumed>) = ? [pid 3494] +++ exited with 0 +++ [pid 3495] +++ exited with 0 +++ [pid 3493] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3493, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3496 attached , child_tidptr=0x5555564465d0) = 3496 [pid 3496] set_robust_list(0x5555564465e0, 24) = 0 [pid 3496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3496] setpgid(0, 0) = 0 [pid 3496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3496] write(3, "1000", 4) = 4 [pid 3496] close(3) = 0 [pid 3496] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3496] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3496] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3497], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3497 ./strace-static-x86_64: Process 3497 attached [pid 3496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3497] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3497] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3496] <... futex resumed>) = 0 [pid 3496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3497] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3496] <... futex resumed>) = 0 [pid 3496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3497] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3496] <... futex resumed>) = 0 [pid 3496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3496] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3497] umount2("./file0", MNT_DETACH [pid 3496] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3498], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3498 [pid 3496] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3496] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3498 attached [pid 3498] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3498] umount2("./file0", MNT_DETACH) = 0 [pid 3498] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3496] <... futex resumed>) = 0 [pid 3498] <... futex resumed>) = 1 [pid 3498] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3497] <... umount2 resumed>) = 0 [pid 3497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3496] exit_group(0) = ? [pid 3497] <... futex resumed>) = ? [pid 3497] +++ exited with 0 +++ [pid 3498] <... futex resumed>) = ? [pid 3498] +++ exited with 0 +++ [pid 3496] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3496, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3499 attached , child_tidptr=0x5555564465d0) = 3499 [pid 3499] set_robust_list(0x5555564465e0, 24) = 0 [pid 3499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3499] setpgid(0, 0) = 0 [pid 3499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3499] write(3, "1000", 4) = 4 [pid 3499] close(3) = 0 [pid 3499] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3499] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3499] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3500 attached , parent_tid=[3500], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3500 [pid 3499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3500] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3500] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3499] <... futex resumed>) = 0 [pid 3499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3500] <... futex resumed>) = 1 [pid 3500] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3499] <... futex resumed>) = 0 [pid 3499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3500] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3499] <... futex resumed>) = 0 [pid 3499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3499] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3499] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3501], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3501 [pid 3499] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3499] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3501 attached [pid 3501] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3501] umount2("./file0", MNT_DETACH [pid 3500] umount2("./file0", MNT_DETACH [pid 3501] <... umount2 resumed>) = 0 [pid 3501] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3499] <... futex resumed>) = 0 [pid 3501] <... futex resumed>) = 1 [pid 3501] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3500] <... umount2 resumed>) = 0 [pid 3500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3499] exit_group(0 [pid 3501] <... futex resumed>) = 231 [pid 3499] <... exit_group resumed>) = ? [pid 3500] <... futex resumed>) = ? [pid 3500] +++ exited with 0 +++ [pid 3501] +++ exited with 0 +++ [pid 3499] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3499, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3502 attached , child_tidptr=0x5555564465d0) = 3502 [pid 3502] set_robust_list(0x5555564465e0, 24) = 0 [pid 3502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3502] setpgid(0, 0) = 0 [pid 3502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3502] write(3, "1000", 4) = 4 [pid 3502] close(3) = 0 [pid 3502] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3502] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3502] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3503], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3503 [pid 3502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3503 attached [pid 3503] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3503] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3502] <... futex resumed>) = 0 [pid 3502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3503] <... futex resumed>) = 1 [pid 3503] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3502] <... futex resumed>) = 0 [pid 3502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3503] <... futex resumed>) = 1 [pid 3503] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3502] <... futex resumed>) = 0 [pid 3503] umount2("./file0", MNT_DETACH [pid 3502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3502] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3502] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3502] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3504 attached , parent_tid=[3504], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3504 [pid 3504] set_robust_list(0x7fc84e07e9e0, 24 [pid 3502] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3504] <... set_robust_list resumed>) = 0 [pid 3502] <... futex resumed>) = 0 [pid 3504] umount2("./file0", MNT_DETACH [pid 3502] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3504] <... umount2 resumed>) = 0 [pid 3504] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3502] <... futex resumed>) = 0 [pid 3504] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3503] <... umount2 resumed>) = 0 [pid 3503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3503] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3502] exit_group(0) = ? [pid 3504] <... futex resumed>) = ? [pid 3503] <... futex resumed>) = ? [pid 3503] +++ exited with 0 +++ [pid 3504] +++ exited with 0 +++ [pid 3502] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3505 attached , child_tidptr=0x5555564465d0) = 3505 [pid 3505] set_robust_list(0x5555564465e0, 24) = 0 [pid 3505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3505] setpgid(0, 0) = 0 [pid 3505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3505] write(3, "1000", 4) = 4 [pid 3505] close(3) = 0 [pid 3505] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3505] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3505] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3506 attached , parent_tid=[3506], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3506 [pid 3505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3506] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3506] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3505] <... futex resumed>) = 0 [pid 3505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3506] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3505] <... futex resumed>) = 0 [pid 3505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3506] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3505] <... futex resumed>) = 0 [pid 3505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3505] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3505] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3506] umount2("./file0", MNT_DETACH [pid 3505] <... clone resumed>, parent_tid=[3507], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3507 [pid 3505] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3505] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3507 attached [pid 3507] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3507] umount2("./file0", MNT_DETACH) = 0 [pid 3507] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3505] <... futex resumed>) = 0 [pid 3507] <... futex resumed>) = 1 [pid 3507] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3506] <... umount2 resumed>) = 0 [pid 3506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3506] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3505] exit_group(0) = ? [pid 3507] <... futex resumed>) = ? [pid 3507] +++ exited with 0 +++ [pid 3506] <... futex resumed>) = ? [pid 3506] +++ exited with 0 +++ [pid 3505] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3508 ./strace-static-x86_64: Process 3508 attached [pid 3508] set_robust_list(0x5555564465e0, 24) = 0 [pid 3508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3508] setpgid(0, 0) = 0 [pid 3508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3508] write(3, "1000", 4) = 4 [pid 3508] close(3) = 0 [pid 3508] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3508] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3508] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3509 attached , parent_tid=[3509], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3509 [pid 3508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3509] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3509] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3508] <... futex resumed>) = 0 [pid 3508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3509] <... futex resumed>) = 1 [pid 3509] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3508] <... futex resumed>) = 0 [pid 3508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3509] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3508] <... futex resumed>) = 0 [pid 3508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3509] umount2("./file0", MNT_DETACH [pid 3508] <... mmap resumed>) = 0x7fc84e05e000 [pid 3508] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3508] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3510], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3510 [pid 3508] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3508] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3510 attached [pid 3510] set_robust_list(0x7fc84e07e9e0, 24 [pid 3509] <... umount2 resumed>) = 0 [pid 3510] <... set_robust_list resumed>) = 0 [pid 3510] umount2("./file0", MNT_DETACH [pid 3509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3510] <... umount2 resumed>) = 0 [pid 3509] <... futex resumed>) = 0 [pid 3509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3510] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3508] <... futex resumed>) = 0 [pid 3508] exit_group(0) = ? [pid 3509] <... futex resumed>) = ? [pid 3510] <... futex resumed>) = ? [pid 3509] +++ exited with 0 +++ [pid 3510] +++ exited with 0 +++ [pid 3508] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3511 ./strace-static-x86_64: Process 3511 attached [pid 3511] set_robust_list(0x5555564465e0, 24) = 0 [pid 3511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3511] setpgid(0, 0) = 0 [pid 3511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3511] write(3, "1000", 4) = 4 [pid 3511] close(3) = 0 [pid 3511] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3511] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3511] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3512], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3512 [pid 3511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3512 attached [pid 3512] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3512] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3511] <... futex resumed>) = 0 [pid 3511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3512] <... futex resumed>) = 1 [pid 3512] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3511] <... futex resumed>) = 0 [pid 3511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3512] <... futex resumed>) = 1 [pid 3512] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3511] <... futex resumed>) = 0 [pid 3512] umount2("./file0", MNT_DETACH [pid 3511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3511] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3511] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3513], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3513 [pid 3511] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3511] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3513 attached [pid 3513] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3513] umount2("./file0", MNT_DETACH) = 0 [pid 3513] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3511] <... futex resumed>) = 0 [pid 3513] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3512] <... umount2 resumed>) = 0 [pid 3512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3511] exit_group(0) = ? [pid 3513] <... futex resumed>) = ? [pid 3513] +++ exited with 0 +++ [pid 3512] <... futex resumed>) = ? [pid 3512] +++ exited with 0 +++ [pid 3511] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3514 ./strace-static-x86_64: Process 3514 attached [pid 3514] set_robust_list(0x5555564465e0, 24) = 0 [pid 3514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3514] setpgid(0, 0) = 0 [pid 3514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3514] write(3, "1000", 4) = 4 [pid 3514] close(3) = 0 [pid 3514] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3514] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3514] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3515 attached , parent_tid=[3515], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3515 [pid 3514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3515] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3515] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3514] <... futex resumed>) = 0 [pid 3515] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3515] <... mount resumed>) = 0 [pid 3515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3514] <... futex resumed>) = 0 [pid 3514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3515] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3514] <... futex resumed>) = 0 [pid 3514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3515] umount2("./file0", MNT_DETACH [pid 3514] <... futex resumed>) = 0 [pid 3514] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3514] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3514] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3516], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3516 [pid 3515] <... umount2 resumed>) = 0 [pid 3514] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3514] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3516 attached [pid 3516] set_robust_list(0x7fc84e07e9e0, 24 [pid 3515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3516] <... set_robust_list resumed>) = 0 [pid 3515] <... futex resumed>) = 0 [pid 3515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3516] umount2("./file0", MNT_DETACH) = 0 [pid 3516] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3516] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3514] <... futex resumed>) = 0 [pid 3514] exit_group(0) = ? [pid 3515] <... futex resumed>) = ? [pid 3515] +++ exited with 0 +++ [pid 3516] <... futex resumed>) = ? [pid 3516] +++ exited with 0 +++ [pid 3514] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3514, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3517 ./strace-static-x86_64: Process 3517 attached [pid 3517] set_robust_list(0x5555564465e0, 24) = 0 [pid 3517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3517] setpgid(0, 0) = 0 [pid 3517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3517] write(3, "1000", 4) = 4 [pid 3517] close(3) = 0 [pid 3517] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3517] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3517] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3518 attached , parent_tid=[3518], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3518 [pid 3517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3518] set_robust_list(0x7fc84e09f9e0, 24 [pid 3517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3518] <... set_robust_list resumed>) = 0 [pid 3518] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3517] <... futex resumed>) = 0 [pid 3517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3518] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3517] <... futex resumed>) = 0 [pid 3518] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3518] <... mount resumed>) = 0 [pid 3518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3517] <... futex resumed>) = 0 [pid 3518] umount2("./file0", MNT_DETACH [pid 3517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3517] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3518] <... umount2 resumed>) = 0 [pid 3518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3517] <... mmap resumed>) = 0x7fc84e05e000 [pid 3518] <... futex resumed>) = 0 [pid 3517] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3517] <... mprotect resumed>) = 0 [pid 3517] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3519 attached [pid 3519] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3519] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3517] <... clone resumed>, parent_tid=[3519], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3519 [pid 3517] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3517] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3519] <... futex resumed>) = 0 [pid 3519] umount2("./file0", MNT_DETACH) = 0 [pid 3519] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3519] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3517] <... futex resumed>) = 0 [pid 3517] exit_group(0) = ? [pid 3519] <... futex resumed>) = ? [pid 3518] <... futex resumed>) = ? [pid 3518] +++ exited with 0 +++ [pid 3519] +++ exited with 0 +++ [pid 3517] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3520 ./strace-static-x86_64: Process 3520 attached [pid 3520] set_robust_list(0x5555564465e0, 24) = 0 [pid 3520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3520] setpgid(0, 0) = 0 [pid 3520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3520] write(3, "1000", 4) = 4 [pid 3520] close(3) = 0 [pid 3520] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3520] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3520] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3521 attached , parent_tid=[3521], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3521 [pid 3521] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3521] <... futex resumed>) = 0 [pid 3521] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3521] <... futex resumed>) = 0 [pid 3521] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3521] <... mount resumed>) = 0 [pid 3521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3521] <... futex resumed>) = 0 [pid 3521] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3520] <... futex resumed>) = 0 [pid 3521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3520] <... futex resumed>) = 0 [pid 3521] umount2("./file0", MNT_DETACH [pid 3520] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3521] <... umount2 resumed>) = 0 [pid 3520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3520] <... mmap resumed>) = 0x7fc84e05e000 [pid 3521] <... futex resumed>) = 0 [pid 3520] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] <... mprotect resumed>) = 0 [pid 3520] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3522 attached , parent_tid=[3522], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3522 [pid 3522] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3522] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3522] <... futex resumed>) = 0 [pid 3522] umount2("./file0", MNT_DETACH [pid 3520] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3522] <... umount2 resumed>) = 0 [pid 3522] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3522] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3520] exit_group(0) = ? [pid 3521] <... futex resumed>) = ? [pid 3521] +++ exited with 0 +++ [pid 3522] <... futex resumed>) = ? [pid 3522] +++ exited with 0 +++ [pid 3520] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3523 attached , child_tidptr=0x5555564465d0) = 3523 [pid 3523] set_robust_list(0x5555564465e0, 24) = 0 [pid 3523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3523] setpgid(0, 0) = 0 [pid 3523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3523] write(3, "1000", 4) = 4 [pid 3523] close(3) = 0 [pid 3523] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3523] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3523] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3524 attached , parent_tid=[3524], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3524 [pid 3524] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3524] <... futex resumed>) = 0 [pid 3524] mkdir("./file0", 000 [pid 3523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3524] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3524] <... futex resumed>) = 0 [pid 3524] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3524] <... mount resumed>) = 0 [pid 3524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3524] <... futex resumed>) = 0 [pid 3524] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3523] <... futex resumed>) = 0 [pid 3523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3524] <... futex resumed>) = 0 [pid 3523] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3524] umount2("./file0", MNT_DETACH [pid 3523] <... futex resumed>) = 0 [pid 3523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3524] <... umount2 resumed>) = 0 [pid 3523] <... mmap resumed>) = 0x7fc84e05e000 [pid 3524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3523] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3524] <... futex resumed>) = 0 [pid 3523] <... mprotect resumed>) = 0 [pid 3524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3523] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3525 attached , parent_tid=[3525], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3525 [pid 3523] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3525] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3525] umount2("./file0", MNT_DETACH [pid 3523] <... futex resumed>) = 0 [pid 3525] <... umount2 resumed>) = 0 [pid 3523] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3525] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3523] <... futex resumed>) = 0 [pid 3525] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3523] exit_group(0) = ? [pid 3524] <... futex resumed>) = ? [pid 3525] <... futex resumed>) = ? [pid 3525] +++ exited with 0 +++ [pid 3524] +++ exited with 0 +++ [pid 3523] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3523, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3526 attached , child_tidptr=0x5555564465d0) = 3526 [pid 3526] set_robust_list(0x5555564465e0, 24) = 0 [pid 3526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3526] setpgid(0, 0) = 0 [pid 3526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3526] write(3, "1000", 4) = 4 [pid 3526] close(3) = 0 [pid 3526] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3526] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3526] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3527 attached , parent_tid=[3527], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3527 [pid 3526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3527] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3527] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3526] <... futex resumed>) = 0 [pid 3527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3527] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3526] <... futex resumed>) = 0 [pid 3526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3527] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3527] <... mount resumed>) = 0 [pid 3527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3526] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3527] <... futex resumed>) = 0 [pid 3527] umount2("./file0", MNT_DETACH) = 0 [pid 3527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3527] <... futex resumed>) = 0 [pid 3527] umount2("./file0", MNT_DETACH) = 0 [pid 3526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3526] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3526] exit_group(0) = ? [pid 3527] <... futex resumed>) = ? [pid 3527] +++ exited with 0 +++ [pid 3526] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3526, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3528 ./strace-static-x86_64: Process 3528 attached [pid 3528] set_robust_list(0x5555564465e0, 24) = 0 [pid 3528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3528] setpgid(0, 0) = 0 [pid 3528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3528] write(3, "1000", 4) = 4 [pid 3528] close(3) = 0 [pid 3528] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3528] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3528] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3529 attached , parent_tid=[3529], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3529 [pid 3528] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3528] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3529] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3529] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3529] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3528] <... futex resumed>) = 0 [pid 3528] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3529] <... futex resumed>) = 0 [pid 3528] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3529] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3528] <... futex resumed>) = 0 [pid 3529] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3528] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3529] <... mount resumed>) = 0 [pid 3528] <... futex resumed>) = 0 [pid 3529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3528] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3529] <... futex resumed>) = 0 [pid 3528] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3529] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3528] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3529] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3528] <... futex resumed>) = 0 [pid 3529] umount2("./file0", MNT_DETACH [pid 3528] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3529] <... umount2 resumed>) = 0 [pid 3528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3528] <... mmap resumed>) = 0x7fc84e05e000 [pid 3529] <... futex resumed>) = 0 [pid 3528] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3529] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3528] <... mprotect resumed>) = 0 [pid 3528] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3530 attached [pid 3530] set_robust_list(0x7fc84e07e9e0, 24 [pid 3528] <... clone resumed>, parent_tid=[3530], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3530 [pid 3530] <... set_robust_list resumed>) = 0 [pid 3528] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3530] umount2("./file0", MNT_DETACH [pid 3528] <... futex resumed>) = 0 [pid 3530] <... umount2 resumed>) = 0 [pid 3528] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3530] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3528] <... futex resumed>) = 0 [pid 3528] exit_group(0 [pid 3529] <... futex resumed>) = ? [pid 3528] <... exit_group resumed>) = ? [pid 3529] +++ exited with 0 +++ [pid 3530] +++ exited with 0 +++ [pid 3528] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3528, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3531 ./strace-static-x86_64: Process 3531 attached [pid 3531] set_robust_list(0x5555564465e0, 24) = 0 [pid 3531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3531] setpgid(0, 0) = 0 [pid 3531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3531] write(3, "1000", 4) = 4 [pid 3531] close(3) = 0 [pid 3531] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3531] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3531] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3531] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3532 attached [pid 3532] set_robust_list(0x7fc84e09f9e0, 24 [pid 3531] <... clone resumed>, parent_tid=[3532], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3532 [pid 3532] <... set_robust_list resumed>) = 0 [pid 3531] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3532] mkdir("./file0", 000 [pid 3531] <... futex resumed>) = 0 [pid 3532] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3532] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3531] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3531] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3532] <... futex resumed>) = 0 [pid 3531] <... futex resumed>) = 1 [pid 3532] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3531] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3532] <... mount resumed>) = 0 [pid 3532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3531] <... futex resumed>) = 0 [pid 3532] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3531] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3532] <... mount resumed>) = 0 [pid 3531] <... futex resumed>) = 0 [pid 3532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3531] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3532] <... futex resumed>) = 0 [pid 3531] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3532] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3531] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3532] umount2("./file0", MNT_DETACH [pid 3531] <... futex resumed>) = 0 [pid 3531] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3532] <... umount2 resumed>) = 0 [pid 3531] <... futex resumed>) = 0 [pid 3532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3531] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3532] <... futex resumed>) = 0 [pid 3531] <... mmap resumed>) = 0x7fc84e05e000 [pid 3532] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3531] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3531] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3533], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3533 [pid 3531] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3531] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3533 attached [pid 3533] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3533] umount2("./file0", MNT_DETACH) = 0 [pid 3533] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3531] <... futex resumed>) = 0 [pid 3533] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3531] exit_group(0 [pid 3533] <... futex resumed>) = ? [pid 3532] <... futex resumed>) = ? [pid 3531] <... exit_group resumed>) = ? [pid 3532] +++ exited with 0 +++ [pid 3533] +++ exited with 0 +++ [pid 3531] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3531, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3534 ./strace-static-x86_64: Process 3534 attached [pid 3534] set_robust_list(0x5555564465e0, 24) = 0 [pid 3534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3534] setpgid(0, 0) = 0 [pid 3534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3534] write(3, "1000", 4) = 4 [pid 3534] close(3) = 0 [pid 3534] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3534] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3534] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3535 attached , parent_tid=[3535], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3535 [pid 3534] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3534] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3535] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3535] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3535] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3534] <... futex resumed>) = 0 [pid 3534] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3535] <... futex resumed>) = 0 [pid 3535] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3534] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3535] <... mount resumed>) = 0 [pid 3535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3534] <... futex resumed>) = 0 [pid 3534] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3534] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3535] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3534] <... futex resumed>) = 0 [pid 3535] umount2("./file0", MNT_DETACH [pid 3534] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3534] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3535] <... umount2 resumed>) = 0 [pid 3534] <... mmap resumed>) = 0x7fc84e05e000 [pid 3535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3535] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3534] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3534] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3536 attached , parent_tid=[3536], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3536 [pid 3534] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3536] set_robust_list(0x7fc84e07e9e0, 24 [pid 3534] <... futex resumed>) = 0 [pid 3534] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3536] <... set_robust_list resumed>) = 0 [pid 3536] umount2("./file0", MNT_DETACH) = 0 [pid 3536] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3534] <... futex resumed>) = 0 [pid 3536] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3534] exit_group(0) = ? [pid 3536] <... futex resumed>) = ? [pid 3535] <... futex resumed>) = ? [pid 3536] +++ exited with 0 +++ [pid 3535] +++ exited with 0 +++ [pid 3534] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3534, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3537 ./strace-static-x86_64: Process 3537 attached [pid 3537] set_robust_list(0x5555564465e0, 24) = 0 [pid 3537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3537] setpgid(0, 0) = 0 [pid 3537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3537] write(3, "1000", 4) = 4 [pid 3537] close(3) = 0 [pid 3537] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3537] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3537] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3537] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3538 attached , parent_tid=[3538], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3538 [pid 3538] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3538] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3537] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3538] <... futex resumed>) = 0 [pid 3538] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3538] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3537] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3537] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3538] <... futex resumed>) = 0 [pid 3538] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3537] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3538] <... mount resumed>) = 0 [pid 3538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3538] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3537] <... futex resumed>) = 0 [pid 3537] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3538] <... futex resumed>) = 0 [pid 3538] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3537] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3538] <... mount resumed>) = 0 [pid 3538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3538] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3537] <... futex resumed>) = 0 [pid 3537] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3538] <... futex resumed>) = 0 [pid 3538] umount2("./file0", MNT_DETACH [pid 3537] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3538] <... umount2 resumed>) = 0 [pid 3538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3538] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3537] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3537] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3537] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3539 attached , parent_tid=[3539], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3539 [pid 3537] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3539] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3537] <... futex resumed>) = 0 [pid 3539] umount2("./file0", MNT_DETACH [pid 3537] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3539] <... umount2 resumed>) = 0 [pid 3539] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3537] <... futex resumed>) = 0 [pid 3537] exit_group(0 [pid 3539] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3537] <... exit_group resumed>) = ? [pid 3539] <... futex resumed>) = ? [pid 3539] +++ exited with 0 +++ [pid 3538] <... futex resumed>) = ? [pid 3538] +++ exited with 0 +++ [pid 3537] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3537, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3540 attached , child_tidptr=0x5555564465d0) = 3540 [pid 3540] set_robust_list(0x5555564465e0, 24) = 0 [pid 3540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3540] setpgid(0, 0) = 0 [pid 3540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3540] write(3, "1000", 4) = 4 [pid 3540] close(3) = 0 [pid 3540] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3540] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3540] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3541], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3541 ./strace-static-x86_64: Process 3541 attached [pid 3540] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3541] set_robust_list(0x7fc84e09f9e0, 24 [pid 3540] <... futex resumed>) = 0 [pid 3541] <... set_robust_list resumed>) = 0 [pid 3540] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3541] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3540] <... futex resumed>) = 0 [pid 3540] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3540] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3541] <... futex resumed>) = 1 [pid 3541] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3540] <... futex resumed>) = 0 [pid 3540] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3540] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3541] <... futex resumed>) = 1 [pid 3541] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3540] <... futex resumed>) = 0 [pid 3540] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3540] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3540] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3540] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3541] umount2("./file0", MNT_DETACH [pid 3540] <... clone resumed>, parent_tid=[3542], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3542 [pid 3540] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3540] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3542 attached [pid 3542] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3542] umount2("./file0", MNT_DETACH) = 0 [pid 3542] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3540] <... futex resumed>) = 0 [pid 3541] <... umount2 resumed>) = 0 [pid 3542] <... futex resumed>) = 1 [pid 3542] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3541] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3540] exit_group(0) = ? [pid 3542] <... futex resumed>) = ? [pid 3541] <... futex resumed>) = ? [pid 3542] +++ exited with 0 +++ [pid 3541] +++ exited with 0 +++ [pid 3540] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3540, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3543 ./strace-static-x86_64: Process 3543 attached [pid 3543] set_robust_list(0x5555564465e0, 24) = 0 [pid 3543] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3543] setpgid(0, 0) = 0 [pid 3543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3543] write(3, "1000", 4) = 4 [pid 3543] close(3) = 0 [pid 3543] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3543] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3543] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3543] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3544], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3544 ./strace-static-x86_64: Process 3544 attached [pid 3544] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3544] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3543] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3544] <... futex resumed>) = 0 [pid 3543] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3544] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3544] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3543] <... futex resumed>) = 0 [pid 3543] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3543] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3544] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3544] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3543] <... futex resumed>) = 0 [pid 3544] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3543] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3543] <... futex resumed>) = 0 [pid 3544] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3543] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3544] <... mount resumed>) = 0 [pid 3544] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3543] <... futex resumed>) = 0 [pid 3544] umount2("./file0", MNT_DETACH [pid 3543] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3543] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3544] <... umount2 resumed>) = 0 [pid 3544] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3543] <... futex resumed>) = 0 [pid 3544] <... futex resumed>) = 0 [pid 3543] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3544] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3543] <... mmap resumed>) = 0x7fc84e05e000 [pid 3543] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3543] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3545 attached , parent_tid=[3545], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3545 [pid 3545] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3545] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3543] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3545] <... futex resumed>) = 0 [pid 3545] umount2("./file0", MNT_DETACH [pid 3543] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3545] <... umount2 resumed>) = 0 [pid 3545] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3543] <... futex resumed>) = 0 [pid 3543] exit_group(0) = ? [pid 3545] +++ exited with 0 +++ [pid 3544] <... futex resumed>) = ? [pid 3544] +++ exited with 0 +++ [pid 3543] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3543, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3546 ./strace-static-x86_64: Process 3546 attached [pid 3546] set_robust_list(0x5555564465e0, 24) = 0 [pid 3546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3546] setpgid(0, 0) = 0 [pid 3546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3546] write(3, "1000", 4) = 4 [pid 3546] close(3) = 0 [pid 3546] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3546] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3546] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3547], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3547 [pid 3546] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3547 attached [pid 3547] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3547] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3547] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3546] <... futex resumed>) = 0 [pid 3546] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3547] <... futex resumed>) = 1 [pid 3547] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3547] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3546] <... futex resumed>) = 0 [pid 3546] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3547] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3547] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3546] <... futex resumed>) = 0 [pid 3546] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3546] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3546] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3547] umount2("./file0", MNT_DETACH [pid 3546] <... clone resumed>, parent_tid=[3548], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3548 [pid 3546] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3546] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3548 attached [pid 3548] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3548] umount2("./file0", MNT_DETACH [pid 3547] <... umount2 resumed>) = 0 [pid 3548] <... umount2 resumed>) = 0 [pid 3548] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3546] <... futex resumed>) = 0 [pid 3548] <... futex resumed>) = 1 [pid 3547] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3548] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3547] <... futex resumed>) = 0 [pid 3547] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3546] exit_group(0) = ? [pid 3547] <... futex resumed>) = ? [pid 3547] +++ exited with 0 +++ [pid 3548] <... futex resumed>) = ? [pid 3548] +++ exited with 0 +++ [pid 3546] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3546, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3549 ./strace-static-x86_64: Process 3549 attached [pid 3549] set_robust_list(0x5555564465e0, 24) = 0 [pid 3549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3549] setpgid(0, 0) = 0 [pid 3549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3549] write(3, "1000", 4) = 4 [pid 3549] close(3) = 0 [pid 3549] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3549] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3549] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3549] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3550 attached , parent_tid=[3550], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3550 [pid 3549] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3549] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3550] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3550] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3550] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3550] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3549] <... futex resumed>) = 0 [pid 3549] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3550] <... futex resumed>) = 0 [pid 3549] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3550] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3550] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3549] <... futex resumed>) = 0 [pid 3550] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3549] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3549] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3550] <... mount resumed>) = 0 [pid 3550] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3549] <... futex resumed>) = 0 [pid 3550] umount2("./file0", MNT_DETACH [pid 3549] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3549] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3549] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3550] <... umount2 resumed>) = 0 [pid 3549] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3550] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3549] <... mprotect resumed>) = 0 [pid 3550] <... futex resumed>) = 0 [pid 3549] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3550] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3551 attached [pid 3551] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3551] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3549] <... clone resumed>, parent_tid=[3551], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3551 [pid 3549] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3551] <... futex resumed>) = 0 [pid 3551] umount2("./file0", MNT_DETACH [pid 3549] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3551] <... umount2 resumed>) = 0 [pid 3551] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3551] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3549] <... futex resumed>) = 0 [pid 3549] exit_group(0 [pid 3550] <... futex resumed>) = 230 [pid 3549] <... exit_group resumed>) = ? [pid 3551] <... futex resumed>) = ? [pid 3551] +++ exited with 0 +++ [pid 3550] +++ exited with 0 +++ [pid 3549] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3549, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3552 ./strace-static-x86_64: Process 3552 attached [pid 3552] set_robust_list(0x5555564465e0, 24) = 0 [pid 3552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3552] setpgid(0, 0) = 0 [pid 3552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3552] write(3, "1000", 4) = 4 [pid 3552] close(3) = 0 [pid 3552] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3552] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3552] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3553 attached , parent_tid=[3553], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3553 [pid 3552] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3552] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3553] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3553] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3553] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3552] <... futex resumed>) = 0 [pid 3553] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3552] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3552] <... futex resumed>) = 0 [pid 3553] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3552] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3553] <... mount resumed>) = 0 [pid 3553] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3552] <... futex resumed>) = 0 [pid 3553] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3552] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3552] <... futex resumed>) = 0 [pid 3553] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3552] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3553] <... mount resumed>) = 0 [pid 3553] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3552] <... futex resumed>) = 0 [pid 3553] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3552] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3552] <... futex resumed>) = 0 [pid 3553] umount2("./file0", MNT_DETACH [pid 3552] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3552] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3552] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3554 attached [pid 3553] <... umount2 resumed>) = 0 [pid 3553] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3552] <... clone resumed>, parent_tid=[3554], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3554 [pid 3553] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3554] set_robust_list(0x7fc84e07e9e0, 24 [pid 3552] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3552] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3554] <... set_robust_list resumed>) = 0 [pid 3554] umount2("./file0", MNT_DETACH) = 0 [pid 3554] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3552] <... futex resumed>) = 0 [pid 3552] exit_group(0) = ? [pid 3553] <... futex resumed>) = 231 [pid 3553] +++ exited with 0 +++ [pid 3554] +++ exited with 0 +++ [pid 3552] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3552, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3555 ./strace-static-x86_64: Process 3555 attached [pid 3555] set_robust_list(0x5555564465e0, 24) = 0 [pid 3555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3555] setpgid(0, 0) = 0 [pid 3555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3555] write(3, "1000", 4) = 4 [pid 3555] close(3) = 0 [pid 3555] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3555] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3555] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3555] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3556 attached , parent_tid=[3556], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3556 [pid 3556] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3556] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3555] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3556] <... futex resumed>) = 0 [pid 3555] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3556] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3556] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3555] <... futex resumed>) = 0 [pid 3556] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3555] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3556] <... mount resumed>) = 0 [pid 3555] <... futex resumed>) = 0 [pid 3556] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3555] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3556] <... futex resumed>) = 0 [pid 3555] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3555] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3556] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3555] <... futex resumed>) = 0 [pid 3555] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3556] <... mount resumed>) = 0 [pid 3556] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3555] <... futex resumed>) = 0 [pid 3556] umount2("./file0", MNT_DETACH [pid 3555] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3556] <... umount2 resumed>) = 0 [pid 3555] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3556] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3555] <... futex resumed>) = 0 [pid 3556] <... futex resumed>) = 0 [pid 3555] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3556] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3555] <... mmap resumed>) = 0x7fc84e05e000 [pid 3555] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3555] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3557 attached [pid 3557] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3557] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3555] <... clone resumed>, parent_tid=[3557], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3557 [pid 3555] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3557] <... futex resumed>) = 0 [pid 3555] <... futex resumed>) = 1 [pid 3557] umount2("./file0", MNT_DETACH) = 0 [pid 3555] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3557] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3557] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3555] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3555] exit_group(0) = ? [pid 3556] <... futex resumed>) = ? [pid 3557] <... futex resumed>) = ? [pid 3556] +++ exited with 0 +++ [pid 3557] +++ exited with 0 +++ [pid 3555] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3555, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3558 attached , child_tidptr=0x5555564465d0) = 3558 [pid 3558] set_robust_list(0x5555564465e0, 24) = 0 [pid 3558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3558] setpgid(0, 0) = 0 [pid 3558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3558] write(3, "1000", 4) = 4 [pid 3558] close(3) = 0 [pid 3558] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3558] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3558] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3559 attached , parent_tid=[3559], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3559 [pid 3558] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3558] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3559] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3559] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3559] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3558] <... futex resumed>) = 0 [pid 3558] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3559] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3558] <... futex resumed>) = 0 [pid 3558] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3559] <... mount resumed>) = 0 [pid 3559] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3558] <... futex resumed>) = 0 [pid 3558] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3558] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3559] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3559] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3558] <... futex resumed>) = 0 [pid 3558] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3558] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3558] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3558] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3559] umount2("./file0", MNT_DETACH [pid 3558] <... clone resumed>, parent_tid=[3560], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3560 [pid 3558] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3558] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3560 attached [pid 3560] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3560] umount2("./file0", MNT_DETACH) = 0 [pid 3559] <... umount2 resumed>) = 0 [pid 3560] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3558] <... futex resumed>) = 0 [pid 3560] <... futex resumed>) = 1 [pid 3559] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3560] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3559] <... futex resumed>) = 0 [pid 3559] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3558] exit_group(0) = ? [pid 3559] <... futex resumed>) = ? [pid 3560] <... futex resumed>) = ? [pid 3559] +++ exited with 0 +++ [pid 3560] +++ exited with 0 +++ [pid 3558] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3558, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3561 attached , child_tidptr=0x5555564465d0) = 3561 [pid 3561] set_robust_list(0x5555564465e0, 24) = 0 [pid 3561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3561] setpgid(0, 0) = 0 [pid 3561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3561] write(3, "1000", 4) = 4 [pid 3561] close(3) = 0 [pid 3561] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3561] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3561] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3562 attached , parent_tid=[3562], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3562 [pid 3561] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3562] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3562] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3562] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3562] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3561] <... futex resumed>) = 0 [pid 3561] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3562] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3562] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3561] <... futex resumed>) = 0 [pid 3561] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3562] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3562] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3561] <... futex resumed>) = 0 [pid 3561] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3562] umount2("./file0", MNT_DETACH [pid 3561] <... mmap resumed>) = 0x7fc84e05e000 [pid 3561] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3561] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3563], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3563 [pid 3561] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3561] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3563 attached [pid 3563] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3563] umount2("./file0", MNT_DETACH [pid 3562] <... umount2 resumed>) = 0 [pid 3562] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3563] <... umount2 resumed>) = 0 [pid 3562] <... futex resumed>) = 0 [pid 3563] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3561] <... futex resumed>) = 0 [pid 3561] exit_group(0) = ? [pid 3563] <... futex resumed>) = ? [pid 3563] +++ exited with 0 +++ [pid 3562] +++ exited with 0 +++ [pid 3561] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3561, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3564 attached , child_tidptr=0x5555564465d0) = 3564 [pid 3564] set_robust_list(0x5555564465e0, 24) = 0 [pid 3564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3564] setpgid(0, 0) = 0 [pid 3564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3564] write(3, "1000", 4) = 4 [pid 3564] close(3) = 0 [pid 3564] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3564] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3564] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3565 attached , parent_tid=[3565], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3565 [pid 3564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3564] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3565] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3565] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3564] <... futex resumed>) = 0 [pid 3564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3565] <... futex resumed>) = 0 [pid 3564] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3565] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3564] <... futex resumed>) = 0 [pid 3565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3565] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3564] <... futex resumed>) = 0 [pid 3565] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3564] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3565] <... mount resumed>) = 0 [pid 3565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3564] <... futex resumed>) = 0 [pid 3565] umount2("./file0", MNT_DETACH [pid 3564] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3564] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3565] <... umount2 resumed>) = 0 [pid 3564] <... futex resumed>) = 0 [pid 3565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3564] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3565] <... futex resumed>) = 0 [pid 3564] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3565] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3564] <... clone resumed>, parent_tid=[3566], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3566 [pid 3564] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3564] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3566 attached [pid 3566] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3566] umount2("./file0", MNT_DETACH) = 0 [pid 3566] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3564] <... futex resumed>) = 0 [pid 3564] exit_group(0 [pid 3566] ????() = 0xe7 [pid 3564] <... exit_group resumed>) = ? [pid 3566] +++ exited with 0 +++ [pid 3565] <... futex resumed>) = ? [pid 3565] +++ exited with 0 +++ [pid 3564] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3564, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3567 ./strace-static-x86_64: Process 3567 attached [pid 3567] set_robust_list(0x5555564465e0, 24) = 0 [pid 3567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3567] setpgid(0, 0) = 0 [pid 3567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3567] write(3, "1000", 4) = 4 [pid 3567] close(3) = 0 [pid 3567] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3567] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3567] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3567] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3568 attached , parent_tid=[3568], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3568 [pid 3567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3567] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3568] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3568] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3567] <... futex resumed>) = 0 [pid 3568] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3567] <... futex resumed>) = 0 [pid 3568] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3567] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3568] <... mount resumed>) = 0 [pid 3568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3567] <... futex resumed>) = 0 [pid 3567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3567] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3568] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3567] <... futex resumed>) = 0 [pid 3567] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3567] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3567] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3567] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3567] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3568] umount2("./file0", MNT_DETACH) = 0 ./strace-static-x86_64: Process 3569 attached [pid 3568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3569] set_robust_list(0x7fc84e07e9e0, 24 [pid 3568] <... futex resumed>) = 0 [pid 3567] <... clone resumed>, parent_tid=[3569], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3569 [pid 3569] <... set_robust_list resumed>) = 0 [pid 3568] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3569] umount2("./file0", MNT_DETACH [pid 3567] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3569] <... umount2 resumed>) = 0 [pid 3567] <... futex resumed>) = 0 [pid 3569] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3567] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3569] <... futex resumed>) = 0 [pid 3569] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3567] exit_group(0 [pid 3568] <... futex resumed>) = ? [pid 3567] <... exit_group resumed>) = ? [pid 3568] +++ exited with 0 +++ [pid 3569] <... futex resumed>) = ? [pid 3569] +++ exited with 0 +++ [pid 3567] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3567, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3570 ./strace-static-x86_64: Process 3570 attached [pid 3570] set_robust_list(0x5555564465e0, 24) = 0 [pid 3570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3570] setpgid(0, 0) = 0 [pid 3570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3570] write(3, "1000", 4) = 4 [pid 3570] close(3) = 0 [pid 3570] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3570] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3570] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3571], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3571 [pid 3570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3571 attached [pid 3571] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3571] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3570] <... futex resumed>) = 0 [pid 3570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3571] <... futex resumed>) = 1 [pid 3571] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3570] <... futex resumed>) = 0 [pid 3570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3571] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3570] <... futex resumed>) = 0 [pid 3570] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3570] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3570] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3572], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3572 [pid 3570] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3570] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3572 attached [pid 3572] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3572] umount2("./file0", MNT_DETACH [pid 3571] umount2("./file0", MNT_DETACH [pid 3572] <... umount2 resumed>) = 0 [pid 3572] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3571] <... umount2 resumed>) = 0 [pid 3570] <... futex resumed>) = 0 [pid 3572] <... futex resumed>) = 1 [pid 3571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3572] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3571] <... futex resumed>) = 0 [pid 3571] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3570] exit_group(0) = ? [pid 3571] <... futex resumed>) = ? [pid 3571] +++ exited with 0 +++ [pid 3572] <... futex resumed>) = ? [pid 3572] +++ exited with 0 +++ [pid 3570] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3570, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3573 attached , child_tidptr=0x5555564465d0) = 3573 [pid 3573] set_robust_list(0x5555564465e0, 24) = 0 [pid 3573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3573] setpgid(0, 0) = 0 [pid 3573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3573] write(3, "1000", 4) = 4 [pid 3573] close(3) = 0 [pid 3573] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3573] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3573] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3574 attached , parent_tid=[3574], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3574 [pid 3573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3574] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3574] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3574] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3573] <... futex resumed>) = 0 [pid 3573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3574] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3573] <... futex resumed>) = 0 [pid 3574] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3574] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3573] <... futex resumed>) = 0 [pid 3573] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3573] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3573] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3574] umount2("./file0", MNT_DETACH [pid 3573] <... clone resumed>, parent_tid=[3575], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3575 [pid 3574] <... umount2 resumed>) = 0 [pid 3573] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3573] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3575 attached [pid 3575] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3575] umount2("./file0", MNT_DETACH [pid 3574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3575] <... umount2 resumed>) = 0 [pid 3574] <... futex resumed>) = 0 [pid 3575] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3574] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3573] <... futex resumed>) = 0 [pid 3573] exit_group(0) = ? [pid 3574] <... futex resumed>) = ? [pid 3574] +++ exited with 0 +++ [pid 3575] <... futex resumed>) = ? [pid 3575] +++ exited with 0 +++ [pid 3573] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3573, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3576 attached , child_tidptr=0x5555564465d0) = 3576 [pid 3576] set_robust_list(0x5555564465e0, 24) = 0 [pid 3576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3576] setpgid(0, 0) = 0 [pid 3576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3576] write(3, "1000", 4) = 4 [pid 3576] close(3) = 0 [pid 3576] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3576] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3576] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3577 attached , parent_tid=[3577], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3577 [pid 3577] set_robust_list(0x7fc84e09f9e0, 24 [pid 3576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3576] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3577] <... set_robust_list resumed>) = 0 [pid 3577] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3576] <... futex resumed>) = 0 [pid 3577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3576] <... futex resumed>) = 0 [pid 3577] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3576] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3577] <... mount resumed>) = 0 [pid 3577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3577] <... futex resumed>) = 0 [pid 3577] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3576] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3577] <... mount resumed>) = 0 [pid 3577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3576] <... futex resumed>) = 0 [pid 3576] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3576] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3576] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3576] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3578], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3578 [pid 3576] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3576] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3578 attached [pid 3578] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3578] umount2("./file0", MNT_DETACH [pid 3577] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3578] <... umount2 resumed>) = 0 [pid 3577] umount2("./file0", MNT_DETACH [pid 3578] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3577] <... umount2 resumed>) = 0 [pid 3577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3578] <... futex resumed>) = 1 [pid 3576] <... futex resumed>) = 0 [pid 3577] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3576] exit_group(0) = ? [pid 3577] <... futex resumed>) = ? [pid 3577] +++ exited with 0 +++ [pid 3578] +++ exited with 0 +++ [pid 3576] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3576, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3579 attached , child_tidptr=0x5555564465d0) = 3579 [pid 3579] set_robust_list(0x5555564465e0, 24) = 0 [pid 3579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3579] setpgid(0, 0) = 0 [pid 3579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3579] write(3, "1000", 4) = 4 [pid 3579] close(3) = 0 [pid 3579] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3579] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3579] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3579] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3580], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3580 ./strace-static-x86_64: Process 3580 attached [pid 3579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3580] set_robust_list(0x7fc84e09f9e0, 24 [pid 3579] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3580] <... set_robust_list resumed>) = 0 [pid 3580] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3580] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3579] <... futex resumed>) = 0 [pid 3579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3580] <... futex resumed>) = 0 [pid 3579] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3580] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3579] <... futex resumed>) = 0 [pid 3580] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3580] <... mount resumed>) = 0 [pid 3579] <... futex resumed>) = 0 [pid 3580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3579] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3580] <... futex resumed>) = 0 [pid 3579] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3580] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3579] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3580] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3579] <... futex resumed>) = 0 [pid 3580] umount2("./file0", MNT_DETACH [pid 3579] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3580] <... umount2 resumed>) = 0 [pid 3579] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3579] <... mmap resumed>) = 0x7fc84e05e000 [pid 3580] <... futex resumed>) = 0 [pid 3579] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3580] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3579] <... mprotect resumed>) = 0 [pid 3579] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3581 attached , parent_tid=[3581], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3581 [pid 3581] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3581] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3579] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3581] <... futex resumed>) = 0 [pid 3579] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3581] umount2("./file0", MNT_DETACH) = 0 [pid 3581] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3579] <... futex resumed>) = 0 [pid 3579] exit_group(0) = ? [pid 3580] <... futex resumed>) = ? [pid 3581] +++ exited with 0 +++ [pid 3580] +++ exited with 0 +++ [pid 3579] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3579, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3582 ./strace-static-x86_64: Process 3582 attached [pid 3582] set_robust_list(0x5555564465e0, 24) = 0 [pid 3582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3582] setpgid(0, 0) = 0 [pid 3582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3582] write(3, "1000", 4) = 4 [pid 3582] close(3) = 0 [pid 3582] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3582] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3582] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3583 attached , parent_tid=[3583], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3583 [pid 3582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3582] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3583] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3583] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3582] <... futex resumed>) = 0 [pid 3582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3582] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3583] <... futex resumed>) = 1 [pid 3583] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3582] <... futex resumed>) = 0 [pid 3583] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3583] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3582] <... futex resumed>) = 0 [pid 3583] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3582] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3583] <... mount resumed>) = 0 [pid 3583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3582] <... futex resumed>) = 0 [pid 3582] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3582] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3582] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3582] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3583] umount2("./file0", MNT_DETACH [pid 3582] <... clone resumed>, parent_tid=[3584], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3584 [pid 3582] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3582] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3584 attached [pid 3584] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3584] umount2("./file0", MNT_DETACH) = 0 [pid 3584] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3582] <... futex resumed>) = 0 [pid 3584] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3583] <... umount2 resumed>) = 0 [pid 3583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3583] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3582] exit_group(0) = ? [pid 3584] <... futex resumed>) = ? [pid 3583] <... futex resumed>) = ? [pid 3584] +++ exited with 0 +++ [pid 3583] +++ exited with 0 +++ [pid 3582] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3582, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3585 ./strace-static-x86_64: Process 3585 attached [pid 3585] set_robust_list(0x5555564465e0, 24) = 0 [pid 3585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3585] setpgid(0, 0) = 0 [pid 3585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3585] write(3, "1000", 4) = 4 [pid 3585] close(3) = 0 [pid 3585] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3585] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3585] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3586], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3586 ./strace-static-x86_64: Process 3586 attached [pid 3585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3585] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3586] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3586] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3585] <... futex resumed>) = 0 [pid 3585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3585] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3586] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3585] <... futex resumed>) = 0 [pid 3586] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3585] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3586] <... futex resumed>) = 0 [pid 3586] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3585] <... futex resumed>) = 0 [pid 3585] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3585] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3585] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3585] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3586] umount2("./file0", MNT_DETACH [pid 3585] <... clone resumed>, parent_tid=[3587], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3587 [pid 3585] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3585] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3587 attached [pid 3587] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3587] umount2("./file0", MNT_DETACH [pid 3586] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 3587] <... umount2 resumed>) = 0 [pid 3587] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3585] <... futex resumed>) = 0 [pid 3587] <... futex resumed>) = 1 [pid 3587] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3586] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3585] exit_group(0) = ? [pid 3586] <... futex resumed>) = ? [pid 3586] +++ exited with 0 +++ [pid 3587] <... futex resumed>) = ? [pid 3587] +++ exited with 0 +++ [pid 3585] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3585, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3588 ./strace-static-x86_64: Process 3588 attached [pid 3588] set_robust_list(0x5555564465e0, 24) = 0 [pid 3588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3588] setpgid(0, 0) = 0 [pid 3588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3588] write(3, "1000", 4) = 4 [pid 3588] close(3) = 0 [pid 3588] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3588] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3588] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3589 attached , parent_tid=[3589], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3589 [pid 3589] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3589] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3589] <... futex resumed>) = 0 [pid 3588] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3589] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3588] <... futex resumed>) = 0 [pid 3589] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3589] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3588] <... futex resumed>) = 0 [pid 3589] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3588] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3589] <... mount resumed>) = 0 [pid 3589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3588] <... futex resumed>) = 0 [pid 3589] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3589] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3588] <... futex resumed>) = 0 [pid 3589] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3588] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3589] <... mount resumed>) = 0 [pid 3589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3588] <... futex resumed>) = 0 [pid 3589] umount2("./file0", MNT_DETACH [pid 3588] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3588] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3589] <... umount2 resumed>) = 0 [pid 3589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3588] <... futex resumed>) = 0 [pid 3588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3589] <... futex resumed>) = 0 [pid 3589] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3588] <... mmap resumed>) = 0x7fc84e05e000 [pid 3588] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3588] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3590 attached , parent_tid=[3590], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3590 [pid 3590] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3590] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3588] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3590] <... futex resumed>) = 0 [pid 3590] umount2("./file0", MNT_DETACH [pid 3588] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3590] <... umount2 resumed>) = 0 [pid 3590] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3588] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3590] <... futex resumed>) = 0 [pid 3590] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3588] exit_group(0) = ? [pid 3589] <... futex resumed>) = ? [pid 3589] +++ exited with 0 +++ [pid 3590] <... futex resumed>) = ? [pid 3590] +++ exited with 0 +++ [pid 3588] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3588, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3591 ./strace-static-x86_64: Process 3591 attached [pid 3591] set_robust_list(0x5555564465e0, 24) = 0 [pid 3591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3591] setpgid(0, 0) = 0 [pid 3591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3591] write(3, "1000", 4) = 4 [pid 3591] close(3) = 0 [pid 3591] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3591] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3591] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3591] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3592 attached , parent_tid=[3592], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3592 [pid 3592] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3592] <... futex resumed>) = 0 [pid 3591] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3592] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3591] <... futex resumed>) = 0 [pid 3592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3591] <... futex resumed>) = 0 [pid 3592] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3591] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3592] <... mount resumed>) = 0 [pid 3592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3591] <... futex resumed>) = 0 [pid 3592] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3592] <... mount resumed>) = 0 [pid 3591] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3591] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3591] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3591] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3591] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3591] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3592] <... futex resumed>) = 0 [pid 3592] umount2("./file0", MNT_DETACH [pid 3591] <... clone resumed>, parent_tid=[3593], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3593 [pid 3591] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3591] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3592] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3593 attached [pid 3592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3593] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3593] umount2("./file0", MNT_DETACH [pid 3592] <... futex resumed>) = 0 [pid 3592] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3593] <... umount2 resumed>) = 0 [pid 3593] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3591] <... futex resumed>) = 0 [pid 3591] exit_group(0) = ? [pid 3593] <... futex resumed>) = ? [pid 3592] <... futex resumed>) = ? [pid 3593] +++ exited with 0 +++ [pid 3592] +++ exited with 0 +++ [pid 3591] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3591, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3594 ./strace-static-x86_64: Process 3594 attached [pid 3594] set_robust_list(0x5555564465e0, 24) = 0 [pid 3594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3594] setpgid(0, 0) = 0 [pid 3594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3594] write(3, "1000", 4) = 4 [pid 3594] close(3) = 0 [pid 3594] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3594] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3594] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3595 attached , parent_tid=[3595], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3595 [pid 3595] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3595] <... futex resumed>) = 0 [pid 3595] mkdir("./file0", 000 [pid 3594] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3595] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3594] <... futex resumed>) = 0 [pid 3595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3595] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3594] <... futex resumed>) = 0 [pid 3595] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3594] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3595] <... mount resumed>) = 0 [pid 3595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3594] <... futex resumed>) = 0 [pid 3595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3595] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3594] <... futex resumed>) = 0 [pid 3595] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3594] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3595] <... mount resumed>) = 0 [pid 3595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3594] <... futex resumed>) = 0 [pid 3595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3594] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3595] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3594] <... futex resumed>) = 0 [pid 3595] umount2("./file0", MNT_DETACH [pid 3594] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3595] <... umount2 resumed>) = 0 [pid 3594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3594] <... mmap resumed>) = 0x7fc84e05e000 [pid 3595] <... futex resumed>) = 0 [pid 3594] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3595] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3594] <... mprotect resumed>) = 0 [pid 3594] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3596 attached , parent_tid=[3596], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3596 [pid 3596] set_robust_list(0x7fc84e07e9e0, 24 [pid 3594] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3596] <... set_robust_list resumed>) = 0 [pid 3594] <... futex resumed>) = 0 [pid 3596] umount2("./file0", MNT_DETACH [pid 3594] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3596] <... umount2 resumed>) = 0 [pid 3596] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3594] <... futex resumed>) = 0 [pid 3596] <... futex resumed>) = 1 [pid 3594] exit_group(0 [pid 3596] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3594] <... exit_group resumed>) = ? [pid 3595] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3596] <... futex resumed>) = ? [pid 3595] +++ exited with 0 +++ [pid 3596] +++ exited with 0 +++ [pid 3594] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3594, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3597 ./strace-static-x86_64: Process 3597 attached [pid 3597] set_robust_list(0x5555564465e0, 24) = 0 [pid 3597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3597] setpgid(0, 0) = 0 [pid 3597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3597] write(3, "1000", 4) = 4 [pid 3597] close(3) = 0 [pid 3597] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3597] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3597] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3597] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3598 attached , parent_tid=[3598], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3598 [pid 3597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3597] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3598] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3598] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3597] <... futex resumed>) = 0 [pid 3598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3597] <... futex resumed>) = 0 [pid 3598] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3597] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3598] <... mount resumed>) = 0 [pid 3598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3597] <... futex resumed>) = 0 [pid 3597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3597] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3598] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3597] <... futex resumed>) = 0 [pid 3597] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3597] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3597] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3597] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3597] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3599], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3599 [pid 3598] umount2("./file0", MNT_DETACH [pid 3597] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3597] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3599 attached [pid 3599] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3599] umount2("./file0", MNT_DETACH) = 0 [pid 3599] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3598] <... umount2 resumed>) = 0 [pid 3599] <... futex resumed>) = 1 [pid 3597] <... futex resumed>) = 0 [pid 3599] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3598] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3597] exit_group(0) = ? [pid 3599] <... futex resumed>) = ? [pid 3598] <... futex resumed>) = ? [pid 3599] +++ exited with 0 +++ [pid 3598] +++ exited with 0 +++ [pid 3597] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3597, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3600 ./strace-static-x86_64: Process 3600 attached [pid 3600] set_robust_list(0x5555564465e0, 24) = 0 [pid 3600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3600] setpgid(0, 0) = 0 [pid 3600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3600] write(3, "1000", 4) = 4 [pid 3600] close(3) = 0 [pid 3600] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3600] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3600] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3601 attached , parent_tid=[3601], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3601 [pid 3601] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3601] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3601] <... futex resumed>) = 0 [pid 3600] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3601] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3600] <... futex resumed>) = 0 [pid 3601] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3601] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3600] <... futex resumed>) = 0 [pid 3601] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3600] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3601] <... mount resumed>) = 0 [pid 3601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3600] <... futex resumed>) = 0 [pid 3600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3601] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3600] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3601] <... mount resumed>) = 0 [pid 3601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3600] <... futex resumed>) = 0 [pid 3600] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3600] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3600] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3600] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3601] umount2("./file0", MNT_DETACH [pid 3600] <... clone resumed>, parent_tid=[3602], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3602 [pid 3601] <... umount2 resumed>) = 0 [pid 3600] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3600] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3602 attached [pid 3602] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3602] umount2("./file0", MNT_DETACH [pid 3601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3602] <... umount2 resumed>) = 0 [pid 3601] <... futex resumed>) = 0 [pid 3602] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3600] <... futex resumed>) = 0 [pid 3600] exit_group(0) = ? [pid 3601] +++ exited with 0 +++ [pid 3602] <... futex resumed>) = ? [pid 3602] +++ exited with 0 +++ [pid 3600] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3600, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3603 ./strace-static-x86_64: Process 3603 attached [pid 3603] set_robust_list(0x5555564465e0, 24) = 0 [pid 3603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3603] setpgid(0, 0) = 0 [pid 3603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3603] write(3, "1000", 4) = 4 [pid 3603] close(3) = 0 [pid 3603] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3603] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3603] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3603] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3604 attached , parent_tid=[3604], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3604 [pid 3603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] set_robust_list(0x7fc84e09f9e0, 24 [pid 3603] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3604] <... set_robust_list resumed>) = 0 [pid 3604] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3603] <... futex resumed>) = 0 [pid 3603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3603] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3604] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3603] <... futex resumed>) = 0 [pid 3604] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3603] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3604] <... mount resumed>) = 0 [pid 3604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3603] <... futex resumed>) = 0 [pid 3603] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] umount2("./file0", MNT_DETACH [pid 3603] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3603] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3603] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3603] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3605 attached , parent_tid=[3605], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3605 [pid 3603] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3603] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3604] <... umount2 resumed>) = 0 [pid 3605] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3605] umount2("./file0", MNT_DETACH [pid 3604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3605] <... umount2 resumed>) = 0 [pid 3605] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3603] <... futex resumed>) = 0 [pid 3603] exit_group(0) = ? [pid 3604] <... futex resumed>) = ? [pid 3604] +++ exited with 0 +++ [pid 3605] +++ exited with 0 +++ [pid 3603] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3603, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3606 attached , child_tidptr=0x5555564465d0) = 3606 [pid 3606] set_robust_list(0x5555564465e0, 24) = 0 [pid 3606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3606] setpgid(0, 0) = 0 [pid 3606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3606] write(3, "1000", 4) = 4 [pid 3606] close(3) = 0 [pid 3606] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3606] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3606] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3607 attached , parent_tid=[3607], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3607 [pid 3607] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3607] <... futex resumed>) = 0 [pid 3607] mkdir("./file0", 000 [pid 3606] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3607] <... futex resumed>) = 0 [pid 3607] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3606] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... mount resumed>) = 0 [pid 3607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] <... futex resumed>) = 0 [pid 3606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3606] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3607] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3606] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3606] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3606] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3606] <... clone resumed>, parent_tid=[3608], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3608 [pid 3607] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3608 attached [pid 3606] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3608] set_robust_list(0x7fc84e07e9e0, 24 [pid 3606] <... futex resumed>) = 0 [pid 3606] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3608] <... set_robust_list resumed>) = 0 [pid 3607] <... umount2 resumed>) = 0 [pid 3607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3607] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3608] umount2("./file0", MNT_DETACH) = 0 [pid 3608] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3606] exit_group(0) = ? [pid 3607] <... futex resumed>) = ? [pid 3607] +++ exited with 0 +++ [pid 3608] +++ exited with 0 +++ [pid 3606] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3606, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3609 attached , child_tidptr=0x5555564465d0) = 3609 [pid 3609] set_robust_list(0x5555564465e0, 24) = 0 [pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3609] setpgid(0, 0) = 0 [pid 3609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1000", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3609] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3609] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3609] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3610], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3610 [pid 3609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3609] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3610 attached [pid 3610] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3610] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3609] <... futex resumed>) = 0 [pid 3609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3610] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3609] <... futex resumed>) = 0 [pid 3609] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3610] <... mount resumed>) = 0 [pid 3610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3609] <... futex resumed>) = 0 [pid 3609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3609] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3610] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3609] <... futex resumed>) = 0 [pid 3609] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3609] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3609] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3609] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3609] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3611], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3611 [pid 3610] umount2("./file0", MNT_DETACH [pid 3609] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3609] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3611 attached [pid 3611] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3611] umount2("./file0", MNT_DETACH [pid 3610] <... umount2 resumed>) = 0 [pid 3610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3610] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3611] <... umount2 resumed>) = 0 [pid 3611] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3609] <... futex resumed>) = 0 [pid 3609] exit_group(0) = ? [pid 3611] <... futex resumed>) = ? [pid 3610] <... futex resumed>) = ? [pid 3611] +++ exited with 0 +++ [pid 3610] +++ exited with 0 +++ [pid 3609] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3609, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3612 ./strace-static-x86_64: Process 3612 attached [pid 3612] set_robust_list(0x5555564465e0, 24) = 0 [pid 3612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3612] setpgid(0, 0) = 0 [pid 3612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1000", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3612] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3612] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3613 attached , parent_tid=[3613], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3613 [pid 3612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3613] set_robust_list(0x7fc84e09f9e0, 24 [pid 3612] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... set_robust_list resumed>) = 0 [pid 3613] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3612] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3613] umount2("./file0", MNT_DETACH [pid 3612] <... mmap resumed>) = 0x7fc84e05e000 [pid 3612] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3612] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3613] <... umount2 resumed>) = 0 [pid 3612] <... clone resumed>, parent_tid=[3614], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3614 [pid 3612] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3614 attached [pid 3614] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3614] umount2("./file0", MNT_DETACH [pid 3613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... umount2 resumed>) = 0 [pid 3613] <... futex resumed>) = 0 [pid 3614] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3614] <... futex resumed>) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3612] exit_group(0) = ? [pid 3614] +++ exited with 0 +++ [pid 3613] <... futex resumed>) = ? [pid 3613] +++ exited with 0 +++ [pid 3612] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3612, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3615 ./strace-static-x86_64: Process 3615 attached [pid 3615] set_robust_list(0x5555564465e0, 24) = 0 [pid 3615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3615] setpgid(0, 0) = 0 [pid 3615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3615] write(3, "1000", 4) = 4 [pid 3615] close(3) = 0 [pid 3615] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3615] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3615] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3616 attached , parent_tid=[3616], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3616 [pid 3616] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3616] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3616] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3615] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3616] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3616] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3615] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3616] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3615] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3615] <... futex resumed>) = 0 [pid 3615] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3615] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3616] umount2("./file0", MNT_DETACH [pid 3615] <... mprotect resumed>) = 0 [pid 3615] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3617 attached , parent_tid=[3617], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3617 [pid 3617] set_robust_list(0x7fc84e07e9e0, 24 [pid 3615] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] <... set_robust_list resumed>) = 0 [pid 3615] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3616] <... umount2 resumed>) = 0 [pid 3617] umount2("./file0", MNT_DETACH) = 0 [pid 3616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3616] <... futex resumed>) = 0 [pid 3617] <... futex resumed>) = 1 [pid 3616] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3615] <... futex resumed>) = 0 [pid 3617] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3615] exit_group(0 [pid 3616] <... futex resumed>) = 231 [pid 3615] <... exit_group resumed>) = ? [pid 3617] <... futex resumed>) = ? [pid 3617] +++ exited with 0 +++ [pid 3616] +++ exited with 0 +++ [pid 3615] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3615, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3618 ./strace-static-x86_64: Process 3618 attached [pid 3618] set_robust_list(0x5555564465e0, 24) = 0 [pid 3618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3618] setpgid(0, 0) = 0 [pid 3618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "1000", 4) = 4 [pid 3618] close(3) = 0 [pid 3618] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3618] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3618] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3619 attached [pid 3619] set_robust_list(0x7fc84e09f9e0, 24 [pid 3618] <... clone resumed>, parent_tid=[3619], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3619 [pid 3619] <... set_robust_list resumed>) = 0 [pid 3618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] mkdir("./file0", 000 [pid 3618] <... futex resumed>) = 0 [pid 3619] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3618] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] <... futex resumed>) = 0 [pid 3618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3618] <... futex resumed>) = 0 [pid 3618] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... mount resumed>) = 0 [pid 3619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3618] <... futex resumed>) = 0 [pid 3618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... futex resumed>) = 1 [pid 3619] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3618] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3618] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3618] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3619] umount2("./file0", MNT_DETACH [pid 3618] <... clone resumed>, parent_tid=[3620], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3620 [pid 3618] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3620 attached [pid 3620] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3620] umount2("./file0", MNT_DETACH) = 0 [pid 3620] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3618] <... futex resumed>) = 0 [pid 3620] <... futex resumed>) = 1 [pid 3619] <... umount2 resumed>) = 0 [pid 3620] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3619] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3618] exit_group(0) = ? [pid 3620] <... futex resumed>) = 231 [pid 3619] <... futex resumed>) = ? [pid 3620] +++ exited with 0 +++ [pid 3619] +++ exited with 0 +++ [pid 3618] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3618, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3621 attached , child_tidptr=0x5555564465d0) = 3621 [pid 3621] set_robust_list(0x5555564465e0, 24) = 0 [pid 3621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3621] setpgid(0, 0) = 0 [pid 3621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3621] write(3, "1000", 4) = 4 [pid 3621] close(3) = 0 [pid 3621] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3621] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3621] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3622 attached , parent_tid=[3622], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3622 [pid 3621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3622] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3622] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3621] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3621] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3622] umount2("./file0", MNT_DETACH [pid 3621] <... clone resumed>, parent_tid=[3623], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3623 [pid 3621] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3623 attached [pid 3623] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3623] umount2("./file0", MNT_DETACH [pid 3622] <... umount2 resumed>) = 0 [pid 3622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... umount2 resumed>) = 0 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3621] exit_group(0) = ? [pid 3623] <... futex resumed>) = ? [pid 3623] +++ exited with 0 +++ [pid 3622] +++ exited with 0 +++ [pid 3621] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3621, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3624 attached , child_tidptr=0x5555564465d0) = 3624 [pid 3624] set_robust_list(0x5555564465e0, 24) = 0 [pid 3624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3624] setpgid(0, 0) = 0 [pid 3624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3624] write(3, "1000", 4) = 4 [pid 3624] close(3) = 0 [pid 3624] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3624] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3624] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3625 attached [pid 3625] set_robust_list(0x7fc84e09f9e0, 24 [pid 3624] <... clone resumed>, parent_tid=[3625], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3625 [pid 3625] <... set_robust_list resumed>) = 0 [pid 3624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] mkdir("./file0", 000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3625] <... futex resumed>) = 1 [pid 3624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3624] <... futex resumed>) = 0 [pid 3625] <... mount resumed>) = 0 [pid 3624] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] umount2("./file0", MNT_DETACH [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3624] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3624] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3626], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3626 [pid 3625] <... umount2 resumed>) = 0 [pid 3624] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3626 attached [pid 3626] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3626] umount2("./file0", MNT_DETACH) = 0 [pid 3625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] exit_group(0) = ? [pid 3625] <... futex resumed>) = ? [pid 3626] <... futex resumed>) = ? [pid 3625] +++ exited with 0 +++ [pid 3626] +++ exited with 0 +++ [pid 3624] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3624, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3627 attached , child_tidptr=0x5555564465d0) = 3627 [pid 3627] set_robust_list(0x5555564465e0, 24) = 0 [pid 3627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3627] setpgid(0, 0) = 0 [pid 3627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3627] write(3, "1000", 4) = 4 [pid 3627] close(3) = 0 [pid 3627] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3627] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3627] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3628 attached , parent_tid=[3628], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3628 [pid 3628] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3627] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3628] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3627] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... mount resumed>) = 0 [pid 3628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3628] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3627] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... mount resumed>) = 0 [pid 3628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3628] umount2("./file0", MNT_DETACH [pid 3627] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3628] <... umount2 resumed>) = 0 [pid 3628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3628] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3627] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3627] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3629 attached , parent_tid=[3629], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3629 [pid 3629] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3629] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = 0 [pid 3627] <... futex resumed>) = 1 [pid 3629] umount2("./file0", MNT_DETACH [pid 3627] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... umount2 resumed>) = 0 [pid 3629] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3627] <... futex resumed>) = 0 [pid 3629] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] exit_group(0 [pid 3629] <... futex resumed>) = ? [pid 3628] <... futex resumed>) = ? [pid 3627] <... exit_group resumed>) = ? [pid 3628] +++ exited with 0 +++ [pid 3629] +++ exited with 0 +++ [pid 3627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3627, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3630 ./strace-static-x86_64: Process 3630 attached [pid 3630] set_robust_list(0x5555564465e0, 24) = 0 [pid 3630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3630] setpgid(0, 0) = 0 [pid 3630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3630] write(3, "1000", 4) = 4 [pid 3630] close(3) = 0 [pid 3630] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3630] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3630] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3631 attached , parent_tid=[3631], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3631 [pid 3631] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3631] mkdir("./file0", 000 [pid 3630] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3631] <... futex resumed>) = 0 [pid 3631] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3630] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... mount resumed>) = 0 [pid 3631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] <... futex resumed>) = 0 [pid 3630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3631] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3630] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3630] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3631] umount2("./file0", MNT_DETACH [pid 3630] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3632], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3632 [pid 3630] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3632 attached [pid 3632] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3632] umount2("./file0", MNT_DETACH) = 0 [pid 3632] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] <... futex resumed>) = 0 [pid 3631] <... umount2 resumed>) = 0 [pid 3631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3632] <... futex resumed>) = 1 [pid 3632] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3631] <... futex resumed>) = 0 [pid 3631] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] exit_group(0) = ? [pid 3632] <... futex resumed>) = ? [pid 3631] <... futex resumed>) = ? [pid 3631] +++ exited with 0 +++ [pid 3632] +++ exited with 0 +++ [pid 3630] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3630, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3633 ./strace-static-x86_64: Process 3633 attached [pid 3633] set_robust_list(0x5555564465e0, 24) = 0 [pid 3633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3633] setpgid(0, 0) = 0 [pid 3633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3633] write(3, "1000", 4) = 4 [pid 3633] close(3) = 0 [pid 3633] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3633] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3633] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3634], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3634 [pid 3633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3633] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3634 attached [pid 3634] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3634] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3633] <... futex resumed>) = 0 [pid 3633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3633] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3634] <... futex resumed>) = 1 [pid 3634] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3633] <... futex resumed>) = 0 [pid 3633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3633] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3634] <... futex resumed>) = 1 [pid 3634] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3633] <... futex resumed>) = 0 [pid 3634] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3633] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3633] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3634] umount2("./file0", MNT_DETACH [pid 3633] <... futex resumed>) = 0 [pid 3633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3633] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3633] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3634] <... umount2 resumed>) = 0 [pid 3633] <... clone resumed>, parent_tid=[3635], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3635 [pid 3633] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3633] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3635 attached [pid 3634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3635] set_robust_list(0x7fc84e07e9e0, 24 [pid 3634] <... futex resumed>) = 0 [pid 3634] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3635] <... set_robust_list resumed>) = 0 [pid 3635] umount2("./file0", MNT_DETACH) = 0 [pid 3635] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3633] <... futex resumed>) = 0 [pid 3633] exit_group(0 [pid 3635] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3633] <... exit_group resumed>) = ? [pid 3635] <... futex resumed>) = ? [pid 3635] +++ exited with 0 +++ [pid 3634] <... futex resumed>) = ? [pid 3634] +++ exited with 0 +++ [pid 3633] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3633, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3636 attached , child_tidptr=0x5555564465d0) = 3636 [pid 3636] set_robust_list(0x5555564465e0, 24) = 0 [pid 3636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3636] setpgid(0, 0) = 0 [pid 3636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3636] write(3, "1000", 4) = 4 [pid 3636] close(3) = 0 [pid 3636] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3636] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3636] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3637 attached [pid 3637] set_robust_list(0x7fc84e09f9e0, 24 [pid 3636] <... clone resumed>, parent_tid=[3637], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3637 [pid 3636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3637] <... set_robust_list resumed>) = 0 [pid 3636] <... futex resumed>) = 0 [pid 3636] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3637] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3636] <... futex resumed>) = 0 [pid 3637] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3636] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3637] <... mount resumed>) = 0 [pid 3637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3636] <... futex resumed>) = 0 [pid 3637] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3636] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3637] <... mount resumed>) = 0 [pid 3637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3636] <... futex resumed>) = 0 [pid 3636] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3636] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3636] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3636] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3638 attached , parent_tid=[3638], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3638 [pid 3638] set_robust_list(0x7fc84e07e9e0, 24 [pid 3636] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3638] <... set_robust_list resumed>) = 0 [pid 3636] <... futex resumed>) = 0 [pid 3638] umount2("./file0", MNT_DETACH [pid 3636] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3638] <... umount2 resumed>) = 0 [pid 3638] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3636] <... futex resumed>) = 0 [pid 3638] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3637] umount2("./file0", MNT_DETACH) = 0 [pid 3637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3636] exit_group(0) = ? [pid 3638] <... futex resumed>) = ? [pid 3638] +++ exited with 0 +++ [pid 3637] +++ exited with 0 +++ [pid 3636] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3636, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3639 attached , child_tidptr=0x5555564465d0) = 3639 [pid 3639] set_robust_list(0x5555564465e0, 24) = 0 [pid 3639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3639] setpgid(0, 0) = 0 [pid 3639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3639] write(3, "1000", 4) = 4 [pid 3639] close(3) = 0 [pid 3639] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3639] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3639] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3639] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3640], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3640 [pid 3639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3639] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3640 attached [pid 3640] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3640] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3639] <... futex resumed>) = 0 [pid 3639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3639] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3640] <... futex resumed>) = 1 [pid 3640] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3639] <... futex resumed>) = 0 [pid 3640] <... futex resumed>) = 1 [pid 3639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3640] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3639] <... futex resumed>) = 0 [pid 3639] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3640] <... mount resumed>) = 0 [pid 3640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3639] <... futex resumed>) = 0 [pid 3640] <... futex resumed>) = 1 [pid 3640] umount2("./file0", MNT_DETACH [pid 3639] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3639] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3639] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3639] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3640] <... umount2 resumed>) = 0 [pid 3639] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 3641 attached [pid 3640] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3641] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3639] <... clone resumed>, parent_tid=[3641], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3641 [pid 3641] umount2("./file0", MNT_DETACH [pid 3639] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3639] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3641] <... umount2 resumed>) = 0 [pid 3641] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3639] <... futex resumed>) = 0 [pid 3641] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3639] exit_group(0) = ? [pid 3640] <... futex resumed>) = ? [pid 3640] +++ exited with 0 +++ [pid 3641] <... futex resumed>) = ? [pid 3641] +++ exited with 0 +++ [pid 3639] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3639, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3642 ./strace-static-x86_64: Process 3642 attached [pid 3642] set_robust_list(0x5555564465e0, 24) = 0 [pid 3642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3642] setpgid(0, 0) = 0 [pid 3642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3642] write(3, "1000", 4) = 4 [pid 3642] close(3) = 0 [pid 3642] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3642] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3642] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3643], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3643 [pid 3642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3643 attached [pid 3643] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3643] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3642] <... futex resumed>) = 0 [pid 3642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3643] <... futex resumed>) = 1 [pid 3643] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3642] <... futex resumed>) = 0 [pid 3642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3642] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3643] <... futex resumed>) = 1 [pid 3643] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3642] <... futex resumed>) = 0 [pid 3643] <... futex resumed>) = 1 [pid 3642] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3643] umount2("./file0", MNT_DETACH [pid 3642] <... futex resumed>) = 0 [pid 3642] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3642] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3642] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3644], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3644 [pid 3642] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3642] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3643] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3644 attached [pid 3643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3644] set_robust_list(0x7fc84e07e9e0, 24 [pid 3643] <... futex resumed>) = 0 [pid 3644] <... set_robust_list resumed>) = 0 [pid 3643] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3644] umount2("./file0", MNT_DETACH) = 0 [pid 3644] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3642] <... futex resumed>) = 0 [pid 3644] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3642] exit_group(0) = ? [pid 3643] <... futex resumed>) = ? [pid 3643] +++ exited with 0 +++ [pid 3644] <... futex resumed>) = ? [pid 3644] +++ exited with 0 +++ [pid 3642] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3642, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3645 ./strace-static-x86_64: Process 3645 attached [pid 3645] set_robust_list(0x5555564465e0, 24) = 0 [pid 3645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3645] setpgid(0, 0) = 0 [pid 3645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3645] write(3, "1000", 4) = 4 [pid 3645] close(3) = 0 [pid 3645] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3645] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3645] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3646], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3646 [pid 3645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3646 attached [pid 3646] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3646] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3645] <... futex resumed>) = 0 [pid 3645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3646] <... futex resumed>) = 1 [pid 3646] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3645] <... futex resumed>) = 0 [pid 3645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3646] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3645] <... futex resumed>) = 0 [pid 3645] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3645] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3646] umount2("./file0", MNT_DETACH [pid 3645] <... mprotect resumed>) = 0 [pid 3645] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3647], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3647 [pid 3645] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3645] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3647 attached [pid 3647] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3647] umount2("./file0", MNT_DETACH) = 0 [pid 3647] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3645] <... futex resumed>) = 0 [pid 3647] <... futex resumed>) = 1 [pid 3647] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3646] <... umount2 resumed>) = 0 [pid 3646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3646] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3645] exit_group(0) = ? [pid 3647] <... futex resumed>) = ? [pid 3646] <... futex resumed>) = 231 [pid 3647] +++ exited with 0 +++ [pid 3646] +++ exited with 0 +++ [pid 3645] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3645, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3648 ./strace-static-x86_64: Process 3648 attached [pid 3648] set_robust_list(0x5555564465e0, 24) = 0 [pid 3648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3648] setpgid(0, 0) = 0 [pid 3648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3648] write(3, "1000", 4) = 4 [pid 3648] close(3) = 0 [pid 3648] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3648] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3648] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3649 attached , parent_tid=[3649], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3649 [pid 3648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3649] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3649] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3648] <... futex resumed>) = 0 [pid 3648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3649] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3648] <... futex resumed>) = 0 [pid 3649] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3648] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3649] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3648] <... futex resumed>) = 0 [pid 3649] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3648] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3648] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3649] umount2("./file0", MNT_DETACH [pid 3648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3648] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3649] <... umount2 resumed>) = 0 [pid 3648] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3650 attached [pid 3649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3648] <... clone resumed>, parent_tid=[3650], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3650 [pid 3648] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3650] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3648] <... futex resumed>) = 0 [pid 3650] umount2("./file0", MNT_DETACH [pid 3648] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3649] <... futex resumed>) = 0 [pid 3649] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3650] <... umount2 resumed>) = 0 [pid 3650] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3648] <... futex resumed>) = 0 [pid 3648] exit_group(0 [pid 3649] <... futex resumed>) = ? [pid 3649] +++ exited with 0 +++ [pid 3648] <... exit_group resumed>) = ? [pid 3650] +++ exited with 0 +++ [pid 3648] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3648, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3651 ./strace-static-x86_64: Process 3651 attached [pid 3651] set_robust_list(0x5555564465e0, 24) = 0 [pid 3651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3651] setpgid(0, 0) = 0 [pid 3651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3651] write(3, "1000", 4) = 4 [pid 3651] close(3) = 0 [pid 3651] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3651] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3651] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3652 attached , parent_tid=[3652], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3652 [pid 3651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3652] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3652] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3651] <... futex resumed>) = 0 [pid 3651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3652] <... futex resumed>) = 0 [pid 3652] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3652] <... mount resumed>) = 0 [pid 3652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3651] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3652] <... futex resumed>) = 0 [pid 3651] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3652] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3651] <... futex resumed>) = 0 [pid 3652] umount2("./file0", MNT_DETACH [pid 3651] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3652] <... umount2 resumed>) = 0 [pid 3651] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3651] <... futex resumed>) = 0 [pid 3652] <... futex resumed>) = 0 [pid 3651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3652] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3651] <... mmap resumed>) = 0x7fc84e05e000 [pid 3651] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3651] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3653 attached , parent_tid=[3653], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3653 [pid 3653] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3653] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3651] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3653] <... futex resumed>) = 0 [pid 3653] umount2("./file0", MNT_DETACH [pid 3651] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3653] <... umount2 resumed>) = 0 [pid 3653] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3651] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3653] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3651] exit_group(0 [pid 3652] <... futex resumed>) = ? [pid 3651] <... exit_group resumed>) = ? [pid 3652] +++ exited with 0 +++ [pid 3653] <... futex resumed>) = ? [pid 3653] +++ exited with 0 +++ [pid 3651] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3651, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3654 attached , child_tidptr=0x5555564465d0) = 3654 [pid 3654] set_robust_list(0x5555564465e0, 24) = 0 [pid 3654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3654] setpgid(0, 0) = 0 [pid 3654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3654] write(3, "1000", 4) = 4 [pid 3654] close(3) = 0 [pid 3654] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3654] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3654] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3655 attached , parent_tid=[3655], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3655 [pid 3654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3655] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3655] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3654] <... futex resumed>) = 0 [pid 3654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3655] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3655] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3654] <... futex resumed>) = 0 [pid 3654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3655] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3654] <... futex resumed>) = 0 [pid 3654] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3654] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3654] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3655] umount2("./file0", MNT_DETACH [pid 3654] <... clone resumed>, parent_tid=[3656], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3656 [pid 3654] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3654] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3656 attached [pid 3656] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3656] umount2("./file0", MNT_DETACH [pid 3655] <... umount2 resumed>) = 0 [pid 3655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3656] <... umount2 resumed>) = 0 [pid 3656] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3654] <... futex resumed>) = 0 [pid 3654] exit_group(0) = ? [pid 3656] <... futex resumed>) = ? [pid 3655] <... futex resumed>) = ? [pid 3656] +++ exited with 0 +++ [pid 3655] +++ exited with 0 +++ [pid 3654] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3654, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3657 attached , child_tidptr=0x5555564465d0) = 3657 [pid 3657] set_robust_list(0x5555564465e0, 24) = 0 [pid 3657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3657] setpgid(0, 0) = 0 [pid 3657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3657] write(3, "1000", 4) = 4 [pid 3657] close(3) = 0 [pid 3657] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3657] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3657] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3658], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3658 ./strace-static-x86_64: Process 3658 attached [pid 3658] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3658] <... futex resumed>) = 0 [pid 3657] <... futex resumed>) = 1 [pid 3658] mkdir("./file0", 000 [pid 3657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3658] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3657] <... futex resumed>) = 0 [pid 3657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3658] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3657] <... futex resumed>) = 0 [pid 3658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3657] <... futex resumed>) = 0 [pid 3658] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3657] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3658] <... mount resumed>) = 0 [pid 3658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3657] <... futex resumed>) = 0 [pid 3658] umount2("./file0", MNT_DETACH [pid 3657] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3657] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3658] <... umount2 resumed>) = 0 [pid 3658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3657] <... futex resumed>) = 0 [pid 3658] <... futex resumed>) = 0 [pid 3657] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3658] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3657] <... mmap resumed>) = 0x7fc84e05e000 [pid 3657] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3657] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3659], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3659 ./strace-static-x86_64: Process 3659 attached [pid 3659] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3659] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3657] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3659] <... futex resumed>) = 0 [pid 3657] <... futex resumed>) = 1 [pid 3659] umount2("./file0", MNT_DETACH [pid 3657] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3659] <... umount2 resumed>) = 0 [pid 3659] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3659] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3657] exit_group(0 [pid 3658] <... futex resumed>) = ? [pid 3657] <... exit_group resumed>) = ? [pid 3659] <... futex resumed>) = ? [pid 3659] +++ exited with 0 +++ [pid 3658] +++ exited with 0 +++ [pid 3657] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3657, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3660 attached , child_tidptr=0x5555564465d0) = 3660 [pid 3660] set_robust_list(0x5555564465e0, 24) = 0 [pid 3660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3660] setpgid(0, 0) = 0 [pid 3660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3660] write(3, "1000", 4) = 4 [pid 3660] close(3) = 0 [pid 3660] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3660] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3660] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3661 attached , parent_tid=[3661], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3661 [pid 3661] set_robust_list(0x7fc84e09f9e0, 24 [pid 3660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3661] <... set_robust_list resumed>) = 0 [pid 3660] <... futex resumed>) = 0 [pid 3661] mkdir("./file0", 000 [pid 3660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3661] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3661] <... futex resumed>) = 0 [pid 3660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3661] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3660] <... futex resumed>) = 0 [pid 3660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3661] <... mount resumed>) = 0 [pid 3661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3660] <... futex resumed>) = 0 [pid 3661] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3660] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3661] <... mount resumed>) = 0 [pid 3661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3660] <... futex resumed>) = 0 [pid 3660] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3660] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3661] umount2("./file0", MNT_DETACH [pid 3660] <... mmap resumed>) = 0x7fc84e05e000 [pid 3660] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3660] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3662], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3662 [pid 3660] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3660] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3662 attached [pid 3662] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3662] umount2("./file0", MNT_DETACH) = 0 [pid 3662] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3661] <... umount2 resumed>) = 0 [pid 3660] <... futex resumed>) = 0 [pid 3662] <... futex resumed>) = 1 [pid 3662] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3661] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3660] exit_group(0) = ? [pid 3662] <... futex resumed>) = ? [pid 3662] +++ exited with 0 +++ [pid 3661] <... futex resumed>) = ? [pid 3661] +++ exited with 0 +++ [pid 3660] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3660, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3663 attached , child_tidptr=0x5555564465d0) = 3663 [pid 3663] set_robust_list(0x5555564465e0, 24) = 0 [pid 3663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3663] setpgid(0, 0) = 0 [pid 3663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3663] write(3, "1000", 4) = 4 [pid 3663] close(3) = 0 [pid 3663] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3663] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3663] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3664 attached , parent_tid=[3664], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3664 [pid 3664] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3664] <... futex resumed>) = 0 [pid 3663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3664] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3663] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3664] <... futex resumed>) = 0 [pid 3664] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3664] <... mount resumed>) = 0 [pid 3664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3663] <... futex resumed>) = 0 [pid 3663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3664] <... futex resumed>) = 0 [pid 3664] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3663] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3664] <... mount resumed>) = 0 [pid 3664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3663] <... futex resumed>) = 0 [pid 3663] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3664] <... futex resumed>) = 0 [pid 3664] umount2("./file0", MNT_DETACH [pid 3663] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3664] <... umount2 resumed>) = 0 [pid 3663] <... mmap resumed>) = 0x7fc84e05e000 [pid 3664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3664] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3663] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3663] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3665 attached [pid 3665] set_robust_list(0x7fc84e07e9e0, 24 [pid 3663] <... clone resumed>, parent_tid=[3665], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3665 [pid 3665] <... set_robust_list resumed>) = 0 [pid 3663] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3665] umount2("./file0", MNT_DETACH [pid 3663] <... futex resumed>) = 0 [pid 3663] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3665] <... umount2 resumed>) = 0 [pid 3665] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3663] <... futex resumed>) = 0 [pid 3663] exit_group(0) = ? [pid 3664] <... futex resumed>) = ? [pid 3664] +++ exited with 0 +++ [pid 3665] +++ exited with 0 +++ [pid 3663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3666 attached , child_tidptr=0x5555564465d0) = 3666 [pid 3666] set_robust_list(0x5555564465e0, 24) = 0 [pid 3666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3666] setpgid(0, 0) = 0 [pid 3666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3666] write(3, "1000", 4) = 4 [pid 3666] close(3) = 0 [pid 3666] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3666] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3666] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3667], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3667 [pid 3666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3667 attached [pid 3667] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3667] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3666] <... futex resumed>) = 0 [pid 3666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3667] <... futex resumed>) = 1 [pid 3667] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3666] <... futex resumed>) = 0 [pid 3667] <... futex resumed>) = 1 [pid 3666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3667] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3666] <... futex resumed>) = 0 [pid 3666] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3667] <... mount resumed>) = 0 [pid 3667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3666] <... futex resumed>) = 0 [pid 3667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3666] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3666] <... futex resumed>) = 0 [pid 3667] umount2("./file0", MNT_DETACH [pid 3666] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3666] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3667] <... umount2 resumed>) = 0 [pid 3666] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3668 attached ) = 0 [pid 3668] set_robust_list(0x7fc84e07e9e0, 24 [pid 3666] <... clone resumed>, parent_tid=[3668], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3668 [pid 3667] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3666] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3666] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3668] <... set_robust_list resumed>) = 0 [pid 3668] umount2("./file0", MNT_DETACH) = 0 [pid 3668] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3666] <... futex resumed>) = 0 [pid 3668] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3666] exit_group(0) = ? [pid 3667] <... futex resumed>) = ? [pid 3667] +++ exited with 0 +++ [pid 3668] <... futex resumed>) = ? [pid 3668] +++ exited with 0 +++ [pid 3666] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3666, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3669 attached , child_tidptr=0x5555564465d0) = 3669 [pid 3669] set_robust_list(0x5555564465e0, 24) = 0 [pid 3669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3669] setpgid(0, 0) = 0 [pid 3669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3669] write(3, "1000", 4) = 4 [pid 3669] close(3) = 0 [pid 3669] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3669] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3669] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3670 attached , parent_tid=[3670], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3670 [pid 3669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3670] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3670] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3669] <... futex resumed>) = 0 [pid 3669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3670] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3669] <... futex resumed>) = 0 [pid 3669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3669] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3670] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3669] <... futex resumed>) = 0 [pid 3670] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3669] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3670] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3669] <... futex resumed>) = 0 [pid 3670] umount2("./file0", MNT_DETACH [pid 3669] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3669] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3669] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3669] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3671], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3671 [pid 3669] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3669] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3671 attached [pid 3671] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3671] umount2("./file0", MNT_DETACH) = 0 [pid 3671] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3669] <... futex resumed>) = 0 [pid 3671] <... futex resumed>) = 1 [pid 3671] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3670] <... umount2 resumed>) = 0 [pid 3670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3670] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3669] exit_group(0) = ? [pid 3670] <... futex resumed>) = ? [pid 3670] +++ exited with 0 +++ [pid 3671] <... futex resumed>) = ? [pid 3671] +++ exited with 0 +++ [pid 3669] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3669, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3672 ./strace-static-x86_64: Process 3672 attached [pid 3672] set_robust_list(0x5555564465e0, 24) = 0 [pid 3672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3672] setpgid(0, 0) = 0 [pid 3672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3672] write(3, "1000", 4) = 4 [pid 3672] close(3) = 0 [pid 3672] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3672] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3672] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3673 attached [pid 3673] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3672] <... clone resumed>, parent_tid=[3673], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3673 [pid 3672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3673] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3672] <... futex resumed>) = 0 [pid 3672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3673] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3672] <... futex resumed>) = 0 [pid 3672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3673] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3672] <... futex resumed>) = 0 [pid 3673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3672] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3672] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3673] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3672] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3673] umount2("./file0", MNT_DETACH [pid 3672] <... clone resumed>, parent_tid=[3674], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3674 [pid 3672] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3672] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3674 attached [pid 3674] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3674] umount2("./file0", MNT_DETACH) = 0 [pid 3674] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3672] <... futex resumed>) = 0 [pid 3674] <... futex resumed>) = 1 [pid 3674] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3673] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 3673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3673] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3672] exit_group(0) = ? [pid 3674] <... futex resumed>) = 231 [pid 3674] +++ exited with 0 +++ [pid 3673] <... futex resumed>) = ? [pid 3673] +++ exited with 0 +++ [pid 3672] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3672, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3675 ./strace-static-x86_64: Process 3675 attached [pid 3675] set_robust_list(0x5555564465e0, 24) = 0 [pid 3675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3675] setpgid(0, 0) = 0 [pid 3675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3675] write(3, "1000", 4) = 4 [pid 3675] close(3) = 0 [pid 3675] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3675] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3675] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3675] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3676 attached , parent_tid=[3676], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3676 [pid 3675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3676] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3676] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3675] <... futex resumed>) = 0 [pid 3675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3676] <... futex resumed>) = 1 [pid 3676] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3675] <... futex resumed>) = 0 [pid 3676] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3676] <... mount resumed>) = 0 [pid 3675] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3675] <... futex resumed>) = 0 [pid 3675] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3675] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3675] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3675] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3675] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3677], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3677 [pid 3675] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3677 attached ) = 0 [pid 3677] set_robust_list(0x7fc84e07e9e0, 24 [pid 3675] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3677] <... set_robust_list resumed>) = 0 [pid 3677] umount2("./file0", MNT_DETACH [pid 3676] umount2("./file0", MNT_DETACH [pid 3677] <... umount2 resumed>) = 0 [pid 3677] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3675] <... futex resumed>) = 0 [pid 3677] <... futex resumed>) = 1 [pid 3676] <... umount2 resumed>) = 0 [pid 3676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3677] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3676] <... futex resumed>) = 0 [pid 3676] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3675] exit_group(0) = ? [pid 3677] <... futex resumed>) = ? [pid 3676] <... futex resumed>) = ? [pid 3677] +++ exited with 0 +++ [pid 3676] +++ exited with 0 +++ [pid 3675] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3675, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3678 ./strace-static-x86_64: Process 3678 attached [pid 3678] set_robust_list(0x5555564465e0, 24) = 0 [pid 3678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3678] setpgid(0, 0) = 0 [pid 3678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3678] write(3, "1000", 4) = 4 [pid 3678] close(3) = 0 [pid 3678] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3678] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3678] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3679 attached [pid 3679] set_robust_list(0x7fc84e09f9e0, 24 [pid 3678] <... clone resumed>, parent_tid=[3679], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3679 [pid 3679] <... set_robust_list resumed>) = 0 [pid 3679] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3679] <... futex resumed>) = 0 [pid 3679] mkdir("./file0", 000 [pid 3678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3679] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3678] <... futex resumed>) = 0 [pid 3678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3679] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3678] <... futex resumed>) = 0 [pid 3678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3678] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3679] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3678] <... futex resumed>) = 0 [pid 3678] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3678] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3678] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3678] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3680 attached , parent_tid=[3680], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3680 [pid 3678] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3680] set_robust_list(0x7fc84e07e9e0, 24 [pid 3678] <... futex resumed>) = 0 [pid 3678] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3679] umount2("./file0", MNT_DETACH [pid 3680] <... set_robust_list resumed>) = 0 [pid 3679] <... umount2 resumed>) = 0 [pid 3679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3679] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3680] umount2("./file0", MNT_DETACH) = 0 [pid 3680] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3678] <... futex resumed>) = 0 [pid 3678] exit_group(0) = ? [pid 3679] <... futex resumed>) = ? [pid 3680] +++ exited with 0 +++ [pid 3679] +++ exited with 0 +++ [pid 3678] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3678, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3681 attached , child_tidptr=0x5555564465d0) = 3681 [pid 3681] set_robust_list(0x5555564465e0, 24) = 0 [pid 3681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3681] setpgid(0, 0) = 0 [pid 3681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3681] write(3, "1000", 4) = 4 [pid 3681] close(3) = 0 [pid 3681] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3681] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3681] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3682 attached , parent_tid=[3682], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3682 [pid 3681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3682] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3682] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3681] <... futex resumed>) = 0 [pid 3681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3682] <... futex resumed>) = 0 [pid 3682] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3682] <... mount resumed>) = 0 [pid 3682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3681] <... futex resumed>) = 0 [pid 3681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3681] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3682] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3681] <... futex resumed>) = 0 [pid 3682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3681] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3681] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3681] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3681] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3681] <... mprotect resumed>) = 0 [pid 3681] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3682] umount2("./file0", MNT_DETACH [pid 3681] <... clone resumed>, parent_tid=[3683], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3683 [pid 3681] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3681] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3683 attached [pid 3683] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3683] umount2("./file0", MNT_DETACH) = 0 [pid 3683] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3682] <... umount2 resumed>) = 0 [pid 3683] <... futex resumed>) = 1 [pid 3681] <... futex resumed>) = 0 [pid 3682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3682] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3683] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3681] exit_group(0) = ? [pid 3682] <... futex resumed>) = ? [pid 3682] +++ exited with 0 +++ [pid 3683] <... futex resumed>) = ? [pid 3683] +++ exited with 0 +++ [pid 3681] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3681, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3684 ./strace-static-x86_64: Process 3684 attached [pid 3684] set_robust_list(0x5555564465e0, 24) = 0 [pid 3684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3684] setpgid(0, 0) = 0 [pid 3684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3684] write(3, "1000", 4) = 4 [pid 3684] close(3) = 0 [pid 3684] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3684] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3684] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3685 attached , parent_tid=[3685], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3685 [pid 3684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3685] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3685] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3684] <... futex resumed>) = 0 [pid 3684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3685] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3684] <... futex resumed>) = 0 [pid 3685] <... mount resumed>) = 0 [pid 3684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3684] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3685] <... futex resumed>) = 0 [pid 3684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3685] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3684] <... futex resumed>) = 0 [pid 3685] <... mount resumed>) = 0 [pid 3684] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3685] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3684] <... futex resumed>) = 0 [pid 3684] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3684] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3684] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3685] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3684] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3685] umount2("./file0", MNT_DETACH [pid 3684] <... clone resumed>, parent_tid=[3686], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3686 [pid 3684] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3684] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3685] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3686 attached [pid 3686] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3686] umount2("./file0", MNT_DETACH [pid 3685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3686] <... umount2 resumed>) = 0 [pid 3686] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3684] <... futex resumed>) = 0 [pid 3684] exit_group(0) = ? [pid 3685] +++ exited with 0 +++ [pid 3686] <... futex resumed>) = ? [pid 3686] +++ exited with 0 +++ [pid 3684] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3684, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3687 attached , child_tidptr=0x5555564465d0) = 3687 [pid 3687] set_robust_list(0x5555564465e0, 24) = 0 [pid 3687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3687] setpgid(0, 0) = 0 [pid 3687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3687] write(3, "1000", 4) = 4 [pid 3687] close(3) = 0 [pid 3687] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3687] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3687] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3688], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3688 [pid 3687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3688 attached [pid 3688] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3688] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3687] <... futex resumed>) = 0 [pid 3687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3688] <... futex resumed>) = 1 [pid 3688] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3687] <... futex resumed>) = 0 [pid 3687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3688] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3687] <... futex resumed>) = 0 [pid 3687] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3687] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3687] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3689 attached [pid 3688] umount2("./file0", MNT_DETACH [pid 3687] <... clone resumed>, parent_tid=[3689], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3689 [pid 3687] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3687] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3689] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3689] umount2("./file0", MNT_DETACH) = 0 [pid 3689] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3688] <... umount2 resumed>) = 0 [pid 3687] <... futex resumed>) = 0 [pid 3689] <... futex resumed>) = 1 [pid 3688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3689] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3688] <... futex resumed>) = 0 [pid 3688] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3687] exit_group(0) = ? [pid 3688] <... futex resumed>) = ? [pid 3689] <... futex resumed>) = ? [pid 3689] +++ exited with 0 +++ [pid 3688] +++ exited with 0 +++ [pid 3687] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3687, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3690 attached , child_tidptr=0x5555564465d0) = 3690 [pid 3690] set_robust_list(0x5555564465e0, 24) = 0 [pid 3690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3690] setpgid(0, 0) = 0 [pid 3690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3690] write(3, "1000", 4) = 4 [pid 3690] close(3) = 0 [pid 3690] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3690] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3690] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3691 attached , parent_tid=[3691], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3691 [pid 3690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3691] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3691] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3690] <... futex resumed>) = 0 [pid 3690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3691] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3690] <... futex resumed>) = 0 [pid 3690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3690] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3691] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3690] <... futex resumed>) = 0 [pid 3690] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3690] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3690] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3691] umount2("./file0", MNT_DETACH [pid 3690] <... mprotect resumed>) = 0 [pid 3690] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3692], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3692 [pid 3690] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3691] <... umount2 resumed>) = 0 [pid 3690] <... futex resumed>) = 0 [pid 3690] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3692 attached [pid 3692] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3692] umount2("./file0", MNT_DETACH [pid 3691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3692] <... umount2 resumed>) = 0 [pid 3692] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3690] <... futex resumed>) = 0 [pid 3690] exit_group(0) = ? [pid 3691] <... futex resumed>) = ? [pid 3692] <... futex resumed>) = ? [pid 3691] +++ exited with 0 +++ [pid 3692] +++ exited with 0 +++ [pid 3690] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3693 attached , child_tidptr=0x5555564465d0) = 3693 [pid 3693] set_robust_list(0x5555564465e0, 24) = 0 [pid 3693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3693] setpgid(0, 0) = 0 [pid 3693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3693] write(3, "1000", 4) = 4 [pid 3693] close(3) = 0 [pid 3693] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3693] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3693] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3694], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3694 [pid 3693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3694 attached [pid 3694] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3694] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3693] <... futex resumed>) = 0 [pid 3693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3694] <... futex resumed>) = 1 [pid 3694] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3693] <... futex resumed>) = 0 [pid 3693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3693] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3694] <... futex resumed>) = 1 [pid 3694] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3693] <... futex resumed>) = 0 [pid 3693] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3693] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3693] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3694] umount2("./file0", MNT_DETACH [pid 3693] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3695 attached [pid 3695] set_robust_list(0x7fc84e07e9e0, 24 [pid 3693] <... clone resumed>, parent_tid=[3695], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3695 [pid 3695] <... set_robust_list resumed>) = 0 [pid 3693] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3695] umount2("./file0", MNT_DETACH [pid 3693] <... futex resumed>) = 0 [pid 3693] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3695] <... umount2 resumed>) = 0 [pid 3695] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3694] <... umount2 resumed>) = 0 [pid 3693] <... futex resumed>) = 0 [pid 3694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3694] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3695] <... futex resumed>) = 1 [pid 3695] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3693] exit_group(0) = ? [pid 3694] <... futex resumed>) = ? [pid 3694] +++ exited with 0 +++ [pid 3695] <... futex resumed>) = ? [pid 3695] +++ exited with 0 +++ [pid 3693] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3693, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3696 ./strace-static-x86_64: Process 3696 attached [pid 3696] set_robust_list(0x5555564465e0, 24) = 0 [pid 3696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3696] setpgid(0, 0) = 0 [pid 3696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3696] write(3, "1000", 4) = 4 [pid 3696] close(3) = 0 [pid 3696] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3696] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3696] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3697 attached , parent_tid=[3697], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3697 [pid 3697] set_robust_list(0x7fc84e09f9e0, 24 [pid 3696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3697] <... set_robust_list resumed>) = 0 [pid 3696] <... futex resumed>) = 0 [pid 3696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3697] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3696] <... futex resumed>) = 0 [pid 3697] <... futex resumed>) = 1 [pid 3696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3697] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3696] <... futex resumed>) = 0 [pid 3696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3697] <... mount resumed>) = 0 [pid 3697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3696] <... futex resumed>) = 0 [pid 3697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3697] <... futex resumed>) = 0 [pid 3696] <... futex resumed>) = 1 [pid 3697] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3696] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3697] <... mount resumed>) = 0 [pid 3697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3696] <... futex resumed>) = 0 [pid 3696] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3696] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3696] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3696] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3697] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3699 attached [pid 3697] umount2("./file0", MNT_DETACH [pid 3696] <... clone resumed>, parent_tid=[3699], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3699 [pid 3699] set_robust_list(0x7fc84e07e9e0, 24 [pid 3696] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3699] <... set_robust_list resumed>) = 0 [pid 3697] <... umount2 resumed>) = 0 [pid 3696] <... futex resumed>) = 0 [pid 3699] umount2("./file0", MNT_DETACH [pid 3697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3696] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3697] <... futex resumed>) = 0 [pid 3697] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3699] <... umount2 resumed>) = 0 [pid 3699] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3696] <... futex resumed>) = 0 [pid 3699] <... futex resumed>) = 1 [pid 3696] exit_group(0 [pid 3699] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3696] <... exit_group resumed>) = ? [pid 3697] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3699] <... futex resumed>) = ? [pid 3697] +++ exited with 0 +++ [pid 3699] +++ exited with 0 +++ [pid 3696] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3700 ./strace-static-x86_64: Process 3700 attached [pid 3700] set_robust_list(0x5555564465e0, 24) = 0 [pid 3700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3700] setpgid(0, 0) = 0 [pid 3700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3700] write(3, "1000", 4) = 4 [pid 3700] close(3) = 0 [pid 3700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3700] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3700] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3701], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3701 ./strace-static-x86_64: Process 3701 attached [pid 3701] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3701] <... futex resumed>) = 0 [pid 3700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3701] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3700] <... futex resumed>) = 0 [pid 3700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3701] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3700] <... futex resumed>) = 0 [pid 3700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3701] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3700] <... futex resumed>) = 0 [pid 3701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3700] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3700] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3701] umount2("./file0", MNT_DETACH [pid 3700] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3702], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3702 [pid 3700] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3700] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3701] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3702 attached [pid 3702] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3702] umount2("./file0", MNT_DETACH [pid 3701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3702] <... umount2 resumed>) = 0 [pid 3702] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3700] <... futex resumed>) = 0 [pid 3702] <... futex resumed>) = 1 [pid 3702] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3701] <... futex resumed>) = 0 [pid 3700] exit_group(0 [pid 3701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3700] <... exit_group resumed>) = ? [pid 3701] +++ exited with 0 +++ [pid 3702] <... futex resumed>) = ? [pid 3702] +++ exited with 0 +++ [pid 3700] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3700, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3703 ./strace-static-x86_64: Process 3703 attached [pid 3703] set_robust_list(0x5555564465e0, 24) = 0 [pid 3703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3703] setpgid(0, 0) = 0 [pid 3703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3703] write(3, "1000", 4) = 4 [pid 3703] close(3) = 0 [pid 3703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3703] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3703] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3704 attached , parent_tid=[3704], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3704 [pid 3703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3704] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3704] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3703] <... futex resumed>) = 0 [pid 3703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3704] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3703] <... futex resumed>) = 0 [pid 3703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3704] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3703] <... futex resumed>) = 0 [pid 3703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3703] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3704] umount2("./file0", MNT_DETACH [pid 3703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3703] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3703] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3704] <... umount2 resumed>) = 0 [pid 3704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3703] <... clone resumed>, parent_tid=[3705], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3705 [pid 3704] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3705 attached [pid 3705] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3705] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3703] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3705] <... futex resumed>) = 0 [pid 3705] umount2("./file0", MNT_DETACH [pid 3703] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3705] <... umount2 resumed>) = 0 [pid 3705] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3705] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3703] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3703] exit_group(0 [pid 3704] <... futex resumed>) = ? [pid 3703] <... exit_group resumed>) = ? [pid 3704] +++ exited with 0 +++ [pid 3705] <... futex resumed>) = ? [pid 3705] +++ exited with 0 +++ [pid 3703] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3703, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3706 attached , child_tidptr=0x5555564465d0) = 3706 [pid 3706] set_robust_list(0x5555564465e0, 24) = 0 [pid 3706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3706] setpgid(0, 0) = 0 [pid 3706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3706] write(3, "1000", 4) = 4 [pid 3706] close(3) = 0 [pid 3706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3706] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3706] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3707 attached , parent_tid=[3707], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3707 [pid 3707] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3707] <... futex resumed>) = 0 [pid 3706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3707] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3706] <... futex resumed>) = 0 [pid 3707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3707] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3706] <... futex resumed>) = 0 [pid 3707] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3707] <... mount resumed>) = 0 [pid 3707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3706] <... futex resumed>) = 0 [pid 3707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3707] <... futex resumed>) = 0 [pid 3707] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3707] <... mount resumed>) = 0 [pid 3707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3706] <... futex resumed>) = 0 [pid 3706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3707] <... futex resumed>) = 0 [pid 3707] umount2("./file0", MNT_DETACH [pid 3706] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3707] <... umount2 resumed>) = 0 [pid 3707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3706] <... futex resumed>) = 0 [pid 3706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3706] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3706] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3708 attached , parent_tid=[3708], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3708 [pid 3708] set_robust_list(0x7fc84e07e9e0, 24 [pid 3706] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3708] <... set_robust_list resumed>) = 0 [pid 3706] <... futex resumed>) = 0 [pid 3708] umount2("./file0", MNT_DETACH [pid 3706] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3708] <... umount2 resumed>) = 0 [pid 3708] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3706] <... futex resumed>) = 0 [pid 3708] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3706] exit_group(0 [pid 3708] <... futex resumed>) = ? [pid 3707] <... futex resumed>) = ? [pid 3706] <... exit_group resumed>) = ? [pid 3708] +++ exited with 0 +++ [pid 3707] +++ exited with 0 +++ [pid 3706] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3709 attached , child_tidptr=0x5555564465d0) = 3709 [pid 3709] set_robust_list(0x5555564465e0, 24) = 0 [pid 3709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3709] setpgid(0, 0) = 0 [pid 3709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3709] write(3, "1000", 4) = 4 [pid 3709] close(3) = 0 [pid 3709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3709] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3709] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3710 attached , parent_tid=[3710], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3710 [pid 3710] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3710] <... futex resumed>) = 0 [pid 3709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3710] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3709] <... futex resumed>) = 0 [pid 3710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3709] <... futex resumed>) = 0 [pid 3710] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3710] <... mount resumed>) = 0 [pid 3710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3709] <... futex resumed>) = 0 [pid 3709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3710] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3709] <... futex resumed>) = 0 [pid 3710] <... mount resumed>) = 0 [pid 3709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3709] <... futex resumed>) = 0 [pid 3710] umount2("./file0", MNT_DETACH [pid 3709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3709] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3710] <... umount2 resumed>) = 0 [pid 3709] <... futex resumed>) = 0 [pid 3710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3710] <... futex resumed>) = 0 [pid 3709] <... mmap resumed>) = 0x7fc84e05e000 [pid 3710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3709] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3709] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3711 attached , parent_tid=[3711], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3711 [pid 3711] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3711] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3709] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3711] <... futex resumed>) = 0 [pid 3709] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3711] umount2("./file0", MNT_DETACH) = 0 [pid 3711] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3709] <... futex resumed>) = 0 [pid 3709] exit_group(0) = ? [pid 3711] +++ exited with 0 +++ [pid 3710] <... futex resumed>) = ? [pid 3710] +++ exited with 0 +++ [pid 3709] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3709, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3712 ./strace-static-x86_64: Process 3712 attached [pid 3712] set_robust_list(0x5555564465e0, 24) = 0 [pid 3712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3712] setpgid(0, 0) = 0 [pid 3712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3712] write(3, "1000", 4) = 4 [pid 3712] close(3) = 0 [pid 3712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3712] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3712] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3713 attached , parent_tid=[3713], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3713 [pid 3712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3713] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3713] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3713] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3712] <... futex resumed>) = 0 [pid 3712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3713] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3713] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3712] <... futex resumed>) = 0 [pid 3712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3713] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3712] <... futex resumed>) = 0 [pid 3713] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3713] umount2("./file0", MNT_DETACH [pid 3712] <... futex resumed>) = 0 [pid 3712] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3712] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3712] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3714], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3714 [pid 3713] <... umount2 resumed>) = 0 [pid 3712] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3712] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3714 attached [pid 3714] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3714] umount2("./file0", MNT_DETACH) = 0 [pid 3713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3714] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3712] <... futex resumed>) = 0 [pid 3712] exit_group(0) = ? [pid 3713] <... futex resumed>) = ? [pid 3714] <... futex resumed>) = ? [pid 3713] +++ exited with 0 +++ [pid 3714] +++ exited with 0 +++ [pid 3712] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3712, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3715 attached , child_tidptr=0x5555564465d0) = 3715 [pid 3715] set_robust_list(0x5555564465e0, 24) = 0 [pid 3715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3715] setpgid(0, 0) = 0 [pid 3715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3715] write(3, "1000", 4) = 4 [pid 3715] close(3) = 0 [pid 3715] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3715] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3715] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3715] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3716 attached , parent_tid=[3716], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3716 [pid 3716] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3716] <... futex resumed>) = 0 [pid 3716] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3716] <... futex resumed>) = 0 [pid 3716] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3716] <... mount resumed>) = 0 [pid 3716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3715] <... futex resumed>) = 0 [pid 3715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3716] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3715] <... futex resumed>) = 0 [pid 3715] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3716] <... mount resumed>) = 0 [pid 3716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3715] <... futex resumed>) = 0 [pid 3715] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3715] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3715] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3715] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3716] umount2("./file0", MNT_DETACH [pid 3715] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3717], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3717 [pid 3715] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3715] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3717 attached [pid 3717] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3717] umount2("./file0", MNT_DETACH) = 0 [pid 3717] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3715] <... futex resumed>) = 0 [pid 3717] <... futex resumed>) = 1 [pid 3717] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3716] <... umount2 resumed>) = 0 [pid 3716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3716] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3715] exit_group(0) = ? [pid 3717] <... futex resumed>) = ? [pid 3717] +++ exited with 0 +++ [pid 3716] <... futex resumed>) = ? [pid 3716] +++ exited with 0 +++ [pid 3715] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3715, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3718 ./strace-static-x86_64: Process 3718 attached [pid 3718] set_robust_list(0x5555564465e0, 24) = 0 [pid 3718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3718] setpgid(0, 0) = 0 [pid 3718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3718] write(3, "1000", 4) = 4 [pid 3718] close(3) = 0 [pid 3718] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3718] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3718] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3719 attached , parent_tid=[3719], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3719 [pid 3719] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3719] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3718] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3718] <... futex resumed>) = 0 [pid 3719] mkdir("./file0", 000 [pid 3718] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3719] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3719] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3718] <... futex resumed>) = 0 [pid 3719] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3718] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3719] <... mount resumed>) = 0 [pid 3718] <... futex resumed>) = 0 [pid 3719] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3718] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3718] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3718] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3719] <... futex resumed>) = 1 [pid 3718] <... futex resumed>) = 0 [pid 3718] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3719] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3719] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3718] <... futex resumed>) = 0 [pid 3718] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3718] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3718] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3719] umount2("./file0", MNT_DETACH [pid 3718] <... mprotect resumed>) = 0 [pid 3718] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3720], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3720 [pid 3718] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3718] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3720 attached [pid 3720] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3720] umount2("./file0", MNT_DETACH) = 0 [pid 3720] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3719] <... umount2 resumed>) = 0 [pid 3720] <... futex resumed>) = 1 [pid 3719] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3718] <... futex resumed>) = 0 [pid 3718] exit_group(0) = ? [pid 3719] <... futex resumed>) = ? [pid 3720] +++ exited with 0 +++ [pid 3719] +++ exited with 0 +++ [pid 3718] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3718, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3721 ./strace-static-x86_64: Process 3721 attached [pid 3721] set_robust_list(0x5555564465e0, 24) = 0 [pid 3721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3721] setpgid(0, 0) = 0 [pid 3721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3721] write(3, "1000", 4) = 4 [pid 3721] close(3) = 0 [pid 3721] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3721] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3721] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3722], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3722 [pid 3721] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3722 attached [pid 3722] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3722] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3722] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3721] <... futex resumed>) = 0 [pid 3721] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3722] <... futex resumed>) = 1 [pid 3722] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3722] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3721] <... futex resumed>) = 0 [pid 3721] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3722] <... futex resumed>) = 1 [pid 3722] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3722] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3721] <... futex resumed>) = 0 [pid 3721] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3721] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3721] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3723 attached , parent_tid=[3723], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3723 [pid 3721] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3721] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3722] <... futex resumed>) = 1 [pid 3722] umount2("./file0", MNT_DETACH [pid 3723] set_robust_list(0x7fc84e07e9e0, 24 [pid 3722] <... umount2 resumed>) = 0 [pid 3723] <... set_robust_list resumed>) = 0 [pid 3723] umount2("./file0", MNT_DETACH) = 0 [pid 3722] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3723] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3721] <... futex resumed>) = 0 [pid 3721] exit_group(0) = ? [pid 3723] <... futex resumed>) = 230 [pid 3723] +++ exited with 0 +++ [pid 3722] <... futex resumed>) = ? [pid 3722] +++ exited with 0 +++ [pid 3721] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3721, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3724 attached , child_tidptr=0x5555564465d0) = 3724 [pid 3724] set_robust_list(0x5555564465e0, 24) = 0 [pid 3724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3724] setpgid(0, 0) = 0 [pid 3724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3724] write(3, "1000", 4) = 4 [pid 3724] close(3) = 0 [pid 3724] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3724] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3724] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3725], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3725 [pid 3724] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3724] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3725 attached [pid 3725] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3725] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3725] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3724] <... futex resumed>) = 0 [pid 3724] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3724] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3725] <... futex resumed>) = 1 [pid 3725] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3725] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3724] <... futex resumed>) = 0 [pid 3724] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3724] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3725] <... futex resumed>) = 1 [pid 3725] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3725] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3724] <... futex resumed>) = 0 [pid 3725] <... futex resumed>) = 1 [pid 3724] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3725] umount2("./file0", MNT_DETACH [pid 3724] <... futex resumed>) = 0 [pid 3724] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3724] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3725] <... umount2 resumed>) = 0 [pid 3724] <... mprotect resumed>) = 0 [pid 3725] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3724] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3725] <... futex resumed>) = 0 [pid 3725] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3726 attached [pid 3724] <... clone resumed>, parent_tid=[3726], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3726 [pid 3726] set_robust_list(0x7fc84e07e9e0, 24 [pid 3724] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3726] <... set_robust_list resumed>) = 0 [pid 3724] <... futex resumed>) = 0 [pid 3726] umount2("./file0", MNT_DETACH [pid 3724] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3726] <... umount2 resumed>) = 0 [pid 3726] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3724] <... futex resumed>) = 0 [pid 3724] exit_group(0) = ? [pid 3725] <... futex resumed>) = ? [pid 3725] +++ exited with 0 +++ [pid 3726] <... futex resumed>) = ? [pid 3726] +++ exited with 0 +++ [pid 3724] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3724, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3727 attached , child_tidptr=0x5555564465d0) = 3727 [pid 3727] set_robust_list(0x5555564465e0, 24) = 0 [pid 3727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3727] setpgid(0, 0) = 0 [pid 3727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3727] write(3, "1000", 4) = 4 [pid 3727] close(3) = 0 [pid 3727] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3727] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3727] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3727] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3728 attached [pid 3728] set_robust_list(0x7fc84e09f9e0, 24 [pid 3727] <... clone resumed>, parent_tid=[3728], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3728 [pid 3727] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3727] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3728] <... set_robust_list resumed>) = 0 [pid 3728] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3728] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3727] <... futex resumed>) = 0 [pid 3727] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3728] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3727] <... futex resumed>) = 0 [pid 3727] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3728] <... mount resumed>) = 0 [pid 3728] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3727] <... futex resumed>) = 0 [pid 3727] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3727] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3728] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3728] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3727] <... futex resumed>) = 0 [pid 3727] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3727] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3727] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3727] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3727] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3728] umount2("./file0", MNT_DETACH [pid 3727] <... clone resumed>, parent_tid=[3729], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3729 [pid 3727] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3727] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3729 attached [pid 3729] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3729] umount2("./file0", MNT_DETACH) = 0 [pid 3729] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3727] <... futex resumed>) = 0 [pid 3729] <... futex resumed>) = 1 [pid 3729] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3728] <... umount2 resumed>) = 0 [pid 3728] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3728] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3727] exit_group(0) = ? [pid 3729] <... futex resumed>) = ? [pid 3729] +++ exited with 0 +++ [pid 3728] <... futex resumed>) = ? [pid 3728] +++ exited with 0 +++ [pid 3727] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3727, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3730 attached , child_tidptr=0x5555564465d0) = 3730 [pid 3730] set_robust_list(0x5555564465e0, 24) = 0 [pid 3730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3730] setpgid(0, 0) = 0 [pid 3730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3730] write(3, "1000", 4) = 4 [pid 3730] close(3) = 0 [pid 3730] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3730] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3730] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3731], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3731 ./strace-static-x86_64: Process 3731 attached [pid 3731] set_robust_list(0x7fc84e09f9e0, 24 [pid 3730] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3731] <... set_robust_list resumed>) = 0 [pid 3731] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3731] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3730] <... futex resumed>) = 0 [pid 3731] <... futex resumed>) = 0 [pid 3731] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3730] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3730] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3731] <... futex resumed>) = 0 [pid 3731] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3730] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3731] <... mount resumed>) = 0 [pid 3731] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3731] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3730] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3731] <... futex resumed>) = 0 [pid 3731] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3730] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3731] <... mount resumed>) = 0 [pid 3731] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3731] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3730] <... futex resumed>) = 0 [pid 3730] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3731] <... futex resumed>) = 0 [pid 3731] umount2("./file0", MNT_DETACH [pid 3730] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3731] <... umount2 resumed>) = 0 [pid 3731] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3731] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3730] <... futex resumed>) = 0 [pid 3730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3730] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3730] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3732 attached , parent_tid=[3732], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3732 [pid 3732] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3732] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3730] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3732] <... futex resumed>) = 0 [pid 3732] umount2("./file0", MNT_DETACH [pid 3730] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3732] <... umount2 resumed>) = 0 [pid 3732] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3732] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3730] exit_group(0 [pid 3731] <... futex resumed>) = ? [pid 3730] <... exit_group resumed>) = ? [pid 3731] +++ exited with 0 +++ [pid 3732] <... futex resumed>) = ? [pid 3732] +++ exited with 0 +++ [pid 3730] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3730, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3733 ./strace-static-x86_64: Process 3733 attached [pid 3733] set_robust_list(0x5555564465e0, 24) = 0 [pid 3733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3733] setpgid(0, 0) = 0 [pid 3733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3733] write(3, "1000", 4) = 4 [pid 3733] close(3) = 0 [pid 3733] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3733] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3733] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3733] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3734 attached , parent_tid=[3734], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3734 [pid 3733] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3733] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3734] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3734] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3734] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3733] <... futex resumed>) = 0 [pid 3733] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3733] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3734] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3734] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3733] <... futex resumed>) = 0 [pid 3734] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3733] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3734] <... futex resumed>) = 0 [pid 3734] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3733] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3734] <... mount resumed>) = 0 [pid 3734] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3733] <... futex resumed>) = 0 [pid 3733] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3733] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3733] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3733] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3733] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3734] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3735 attached [pid 3735] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3735] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3733] <... clone resumed>, parent_tid=[3735], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3735 [pid 3734] <... umount2 resumed>) = 0 [pid 3733] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3734] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3733] <... futex resumed>) = 1 [pid 3735] <... futex resumed>) = 0 [pid 3735] umount2("./file0", MNT_DETACH [pid 3733] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3734] <... futex resumed>) = 0 [pid 3735] <... umount2 resumed>) = 0 [pid 3735] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3735] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3734] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3733] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3733] exit_group(0 [pid 3734] <... futex resumed>) = ? [pid 3733] <... exit_group resumed>) = ? [pid 3735] <... futex resumed>) = ? [pid 3734] +++ exited with 0 +++ [pid 3735] +++ exited with 0 +++ [pid 3733] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3733, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3736 attached , child_tidptr=0x5555564465d0) = 3736 [pid 3736] set_robust_list(0x5555564465e0, 24) = 0 [pid 3736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3736] setpgid(0, 0) = 0 [pid 3736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3736] write(3, "1000", 4) = 4 [pid 3736] close(3) = 0 [pid 3736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3736] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3736] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3737], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3737 [pid 3736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3737 attached [pid 3737] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3737] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3736] <... futex resumed>) = 0 [pid 3736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3737] <... futex resumed>) = 1 [pid 3737] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3736] <... futex resumed>) = 0 [pid 3736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3737] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3736] <... futex resumed>) = 0 [pid 3737] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3736] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3736] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3737] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3736] <... clone resumed>, parent_tid=[3738], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3738 [pid 3737] umount2("./file0", MNT_DETACH [pid 3736] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3736] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3738 attached [pid 3738] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3738] umount2("./file0", MNT_DETACH [pid 3737] <... umount2 resumed>) = 0 [pid 3738] <... umount2 resumed>) = 0 [pid 3738] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3736] <... futex resumed>) = 0 [pid 3738] <... futex resumed>) = 1 [pid 3737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3738] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3737] <... futex resumed>) = 0 [pid 3737] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3736] exit_group(0) = ? [pid 3737] <... futex resumed>) = ? [pid 3738] <... futex resumed>) = ? [pid 3737] +++ exited with 0 +++ [pid 3738] +++ exited with 0 +++ [pid 3736] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3736, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3739 attached , child_tidptr=0x5555564465d0) = 3739 [pid 3739] set_robust_list(0x5555564465e0, 24) = 0 [pid 3739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3739] setpgid(0, 0) = 0 [pid 3739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3739] write(3, "1000", 4) = 4 [pid 3739] close(3) = 0 [pid 3739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3739] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3739] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3740], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3740 [pid 3739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3740 attached [pid 3740] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3740] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3739] <... futex resumed>) = 0 [pid 3739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3740] <... futex resumed>) = 1 [pid 3740] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3739] <... futex resumed>) = 0 [pid 3739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3740] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3739] <... futex resumed>) = 0 [pid 3740] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3739] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3739] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3740] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 3741 attached [pid 3739] <... clone resumed>, parent_tid=[3741], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3741 [pid 3741] set_robust_list(0x7fc84e07e9e0, 24 [pid 3740] umount2("./file0", MNT_DETACH [pid 3739] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3739] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3741] <... set_robust_list resumed>) = 0 [pid 3740] <... umount2 resumed>) = 0 [pid 3741] umount2("./file0", MNT_DETACH [pid 3740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3741] <... umount2 resumed>) = 0 [pid 3740] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3741] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3739] <... futex resumed>) = 0 [pid 3739] exit_group(0) = ? [pid 3740] <... futex resumed>) = ? [pid 3740] +++ exited with 0 +++ [pid 3741] +++ exited with 0 +++ [pid 3739] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3739, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3742 attached [pid 3742] set_robust_list(0x5555564465e0, 24 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 3742 [pid 3742] <... set_robust_list resumed>) = 0 [pid 3742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3742] setpgid(0, 0) = 0 [pid 3742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3742] write(3, "1000", 4) = 4 [pid 3742] close(3) = 0 [pid 3742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3742] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3742] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3743], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3743 [pid 3742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3742] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3743 attached [pid 3743] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3743] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3742] <... futex resumed>) = 0 [pid 3743] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3743] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3742] <... futex resumed>) = 0 [pid 3743] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3742] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3743] <... mount resumed>) = 0 [pid 3743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3742] <... futex resumed>) = 0 [pid 3743] <... futex resumed>) = 1 [pid 3742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3743] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3742] <... futex resumed>) = 0 [pid 3742] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3743] <... mount resumed>) = 0 [pid 3743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3742] <... futex resumed>) = 0 [pid 3743] <... futex resumed>) = 1 [pid 3742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3743] umount2("./file0", MNT_DETACH [pid 3742] <... futex resumed>) = 0 [pid 3742] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3743] <... umount2 resumed>) = 0 [pid 3742] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3742] <... mprotect resumed>) = 0 [pid 3743] <... futex resumed>) = 0 [pid 3742] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3743] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3744 attached [pid 3744] set_robust_list(0x7fc84e07e9e0, 24 [pid 3742] <... clone resumed>, parent_tid=[3744], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3744 [pid 3742] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3744] <... set_robust_list resumed>) = 0 [pid 3742] <... futex resumed>) = 0 [pid 3744] umount2("./file0", MNT_DETACH [pid 3742] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3744] <... umount2 resumed>) = 0 [pid 3744] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3742] <... futex resumed>) = 0 [pid 3744] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3742] exit_group(0) = ? [pid 3743] <... futex resumed>) = ? [pid 3743] +++ exited with 0 +++ [pid 3744] <... futex resumed>) = ? [pid 3744] +++ exited with 0 +++ [pid 3742] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3742, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3745 attached , child_tidptr=0x5555564465d0) = 3745 [pid 3745] set_robust_list(0x5555564465e0, 24) = 0 [pid 3745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3745] setpgid(0, 0) = 0 [pid 3745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3745] write(3, "1000", 4) = 4 [pid 3745] close(3) = 0 [pid 3745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3745] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3745] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3746 attached [pid 3746] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3746] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] <... clone resumed>, parent_tid=[3746], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3746 [pid 3745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3746] <... futex resumed>) = 0 [pid 3746] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3746] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3746] <... futex resumed>) = 0 [pid 3746] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3745] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3746] <... mount resumed>) = 0 [pid 3746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3746] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3745] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3746] <... futex resumed>) = 0 [pid 3746] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3746] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] <... futex resumed>) = 0 [pid 3745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3746] <... futex resumed>) = 0 [pid 3746] umount2("./file0", MNT_DETACH) = 0 [pid 3745] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3746] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] <... futex resumed>) = 0 [pid 3745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3745] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3745] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3747 attached [pid 3747] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3747] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] <... clone resumed>, parent_tid=[3747], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3747 [pid 3745] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3747] <... futex resumed>) = 0 [pid 3747] umount2("./file0", MNT_DETACH) = 0 [pid 3747] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3747] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3745] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3745] exit_group(0 [pid 3746] <... futex resumed>) = ? [pid 3745] <... exit_group resumed>) = ? [pid 3746] +++ exited with 0 +++ [pid 3747] <... futex resumed>) = ? [pid 3747] +++ exited with 0 +++ [pid 3745] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3745, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3748 attached , child_tidptr=0x5555564465d0) = 3748 [pid 3748] set_robust_list(0x5555564465e0, 24) = 0 [pid 3748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3748] setpgid(0, 0) = 0 [pid 3748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3748] write(3, "1000", 4) = 4 [pid 3748] close(3) = 0 [pid 3748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3748] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3748] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3749 attached , parent_tid=[3749], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3749 [pid 3749] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3749] <... futex resumed>) = 0 [pid 3749] mkdir("./file0", 000 [pid 3748] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3749] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3749] <... futex resumed>) = 0 [pid 3749] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3748] <... futex resumed>) = 1 [pid 3748] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3749] <... mount resumed>) = 0 [pid 3749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3748] <... futex resumed>) = 0 [pid 3748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3749] <... futex resumed>) = 0 [pid 3748] <... futex resumed>) = 1 [pid 3749] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3748] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3749] <... mount resumed>) = 0 [pid 3749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3749] <... futex resumed>) = 0 [pid 3749] umount2("./file0", MNT_DETACH [pid 3748] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3749] <... umount2 resumed>) = 0 [pid 3749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3748] <... futex resumed>) = 0 [pid 3748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3748] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3748] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3750 attached , parent_tid=[3750], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3750 [pid 3750] set_robust_list(0x7fc84e07e9e0, 24 [pid 3748] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3750] <... set_robust_list resumed>) = 0 [pid 3748] <... futex resumed>) = 0 [pid 3748] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3750] umount2("./file0", MNT_DETACH) = 0 [pid 3750] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3748] <... futex resumed>) = 0 [pid 3750] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3748] exit_group(0) = ? [pid 3749] <... futex resumed>) = ? [pid 3749] +++ exited with 0 +++ [pid 3750] <... futex resumed>) = ? [pid 3750] +++ exited with 0 +++ [pid 3748] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3748, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3751 ./strace-static-x86_64: Process 3751 attached [pid 3751] set_robust_list(0x5555564465e0, 24) = 0 [pid 3751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3751] setpgid(0, 0) = 0 [pid 3751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3751] write(3, "1000", 4) = 4 [pid 3751] close(3) = 0 [pid 3751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3751] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3751] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3752 attached , parent_tid=[3752], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3752 [pid 3752] set_robust_list(0x7fc84e09f9e0, 24 [pid 3751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3752] <... set_robust_list resumed>) = 0 [pid 3752] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3751] <... futex resumed>) = 1 [pid 3752] <... futex resumed>) = 0 [pid 3752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3752] <... futex resumed>) = 0 [pid 3752] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3752] <... mount resumed>) = 0 [pid 3752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3752] <... futex resumed>) = 0 [pid 3752] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3752] <... mount resumed>) = 0 [pid 3752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3751] <... futex resumed>) = 0 [pid 3751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3752] umount2("./file0", MNT_DETACH [pid 3751] <... futex resumed>) = 0 [pid 3751] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3752] <... umount2 resumed>) = 0 [pid 3751] <... futex resumed>) = 0 [pid 3752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3751] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3751] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3753 attached [pid 3753] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3753] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3751] <... clone resumed>, parent_tid=[3753], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3753 [pid 3751] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3753] <... futex resumed>) = 0 [pid 3753] umount2("./file0", MNT_DETACH [pid 3751] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3753] <... umount2 resumed>) = 0 [pid 3753] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3753] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3751] exit_group(0 [pid 3752] <... futex resumed>) = ? [pid 3751] <... exit_group resumed>) = ? [pid 3752] +++ exited with 0 +++ [pid 3753] <... futex resumed>) = ? [pid 3753] +++ exited with 0 +++ [pid 3751] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3751, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3754 ./strace-static-x86_64: Process 3754 attached [pid 3754] set_robust_list(0x5555564465e0, 24) = 0 [pid 3754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3754] setpgid(0, 0) = 0 [pid 3754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3754] write(3, "1000", 4) = 4 [pid 3754] close(3) = 0 [pid 3754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3754] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3754] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3755 attached , parent_tid=[3755], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3755 [pid 3755] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3755] <... futex resumed>) = 0 [pid 3755] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3755] <... futex resumed>) = 0 [pid 3755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3754] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3755] <... futex resumed>) = 0 [pid 3755] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3755] <... mount resumed>) = 0 [pid 3755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3754] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3755] <... futex resumed>) = 0 [pid 3755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3755] <... futex resumed>) = 0 [pid 3755] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3755] <... mount resumed>) = 0 [pid 3755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3754] <... futex resumed>) = 0 [pid 3754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3754] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3754] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3755] umount2("./file0", MNT_DETACH [pid 3754] <... mprotect resumed>) = 0 [pid 3754] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3756], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3756 ./strace-static-x86_64: Process 3756 attached [pid 3756] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3756] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3754] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3756] <... futex resumed>) = 0 [pid 3756] umount2("./file0", MNT_DETACH [pid 3755] <... umount2 resumed>) = 0 [pid 3754] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3756] <... umount2 resumed>) = 0 [pid 3756] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3754] <... futex resumed>) = 0 [pid 3756] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3754] exit_group(0) = ? [pid 3755] <... futex resumed>) = 231 [pid 3756] <... futex resumed>) = ? [pid 3755] +++ exited with 0 +++ [pid 3756] +++ exited with 0 +++ [pid 3754] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3754, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3757 ./strace-static-x86_64: Process 3757 attached [pid 3757] set_robust_list(0x5555564465e0, 24) = 0 [pid 3757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3757] setpgid(0, 0) = 0 [pid 3757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3757] write(3, "1000", 4) = 4 [pid 3757] close(3) = 0 [pid 3757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3757] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3757] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3758 attached , parent_tid=[3758], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3758 [pid 3757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3758] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3758] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3757] <... futex resumed>) = 0 [pid 3757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3758] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3757] <... futex resumed>) = 0 [pid 3757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3758] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3758] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3757] <... futex resumed>) = 0 [pid 3757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3757] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3757] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3759], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3759 [pid 3757] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3757] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3759 attached [pid 3758] umount2("./file0", MNT_DETACH [pid 3759] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3759] umount2("./file0", MNT_DETACH) = 0 [pid 3759] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3757] <... futex resumed>) = 0 [pid 3759] <... futex resumed>) = 1 [pid 3759] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3758] <... umount2 resumed>) = 0 [pid 3758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3757] exit_group(0) = ? [pid 3758] <... futex resumed>) = ? [pid 3758] +++ exited with 0 +++ [pid 3759] <... futex resumed>) = ? [pid 3759] +++ exited with 0 +++ [pid 3757] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3757, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3760 attached , child_tidptr=0x5555564465d0) = 3760 [pid 3760] set_robust_list(0x5555564465e0, 24) = 0 [pid 3760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3760] setpgid(0, 0) = 0 [pid 3760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3760] write(3, "1000", 4) = 4 [pid 3760] close(3) = 0 [pid 3760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3760] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3760] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3761], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3761 [pid 3760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3761 attached [pid 3761] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3761] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3760] <... futex resumed>) = 0 [pid 3760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3761] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3760] <... futex resumed>) = 0 [pid 3761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3761] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3761] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3760] <... futex resumed>) = 0 [pid 3760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3761] umount2("./file0", MNT_DETACH [pid 3760] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3760] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3760] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3762], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3762 [pid 3761] <... umount2 resumed>) = 0 [pid 3760] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3760] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3762 attached [pid 3762] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3762] umount2("./file0", MNT_DETACH [pid 3761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3762] <... umount2 resumed>) = 0 [pid 3761] <... futex resumed>) = 0 [pid 3762] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3760] <... futex resumed>) = 0 [pid 3760] exit_group(0) = ? [pid 3762] <... futex resumed>) = 230 [pid 3761] +++ exited with 0 +++ [pid 3762] +++ exited with 0 +++ [pid 3760] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3760, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3763 ./strace-static-x86_64: Process 3763 attached [pid 3763] set_robust_list(0x5555564465e0, 24) = 0 [pid 3763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3763] setpgid(0, 0) = 0 [pid 3763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3763] write(3, "1000", 4) = 4 [pid 3763] close(3) = 0 [pid 3763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3763] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3763] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3763] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3764 attached , parent_tid=[3764], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3764 [pid 3764] set_robust_list(0x7fc84e09f9e0, 24 [pid 3763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3764] <... set_robust_list resumed>) = 0 [pid 3763] <... futex resumed>) = 0 [pid 3763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3764] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3763] <... futex resumed>) = 0 [pid 3763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3764] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3763] <... futex resumed>) = 0 [pid 3764] <... mount resumed>) = 0 [pid 3763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3763] <... futex resumed>) = 0 [pid 3763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3764] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3763] <... futex resumed>) = 0 [pid 3763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3763] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3763] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3763] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3763] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3764] umount2("./file0", MNT_DETACH [pid 3763] <... clone resumed>, parent_tid=[3765], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3765 [pid 3763] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3763] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3765 attached [pid 3765] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3765] umount2("./file0", MNT_DETACH [pid 3764] <... umount2 resumed>) = 0 [pid 3764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3765] <... umount2 resumed>) = 0 [pid 3765] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3763] <... futex resumed>) = 0 [pid 3763] exit_group(0) = ? [pid 3764] <... futex resumed>) = ? [pid 3764] +++ exited with 0 +++ [pid 3765] <... futex resumed>) = ? [pid 3765] +++ exited with 0 +++ [pid 3763] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3763, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3766 attached , child_tidptr=0x5555564465d0) = 3766 [pid 3766] set_robust_list(0x5555564465e0, 24) = 0 [pid 3766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3766] setpgid(0, 0) = 0 [pid 3766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3766] write(3, "1000", 4) = 4 [pid 3766] close(3) = 0 [pid 3766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3766] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3766] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3767 attached , parent_tid=[3767], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3767 [pid 3767] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3767] <... futex resumed>) = 0 [pid 3766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3767] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3766] <... futex resumed>) = 0 [pid 3767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3767] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3766] <... futex resumed>) = 0 [pid 3767] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3767] <... mount resumed>) = 0 [pid 3767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3766] <... futex resumed>) = 0 [pid 3766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3767] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3766] <... futex resumed>) = 0 [pid 3766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3767] <... mount resumed>) = 0 [pid 3767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3766] <... futex resumed>) = 0 [pid 3767] umount2("./file0", MNT_DETACH [pid 3766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3766] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3767] <... umount2 resumed>) = 0 [pid 3767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3766] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3767] <... futex resumed>) = 0 [pid 3766] <... mprotect resumed>) = 0 [pid 3767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3766] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3768 attached [pid 3768] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3768] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3766] <... clone resumed>, parent_tid=[3768], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3768 [pid 3766] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3768] <... futex resumed>) = 0 [pid 3768] umount2("./file0", MNT_DETACH [pid 3766] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3768] <... umount2 resumed>) = 0 [pid 3768] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3768] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3766] exit_group(0) = ? [pid 3767] <... futex resumed>) = ? [pid 3768] <... futex resumed>) = ? [pid 3768] +++ exited with 0 +++ [pid 3767] +++ exited with 0 +++ [pid 3766] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3766, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3769 attached , child_tidptr=0x5555564465d0) = 3769 [pid 3769] set_robust_list(0x5555564465e0, 24) = 0 [pid 3769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3769] setpgid(0, 0) = 0 [pid 3769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3769] write(3, "1000", 4) = 4 [pid 3769] close(3) = 0 [pid 3769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3769] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3769] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3769] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3770], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3770 [pid 3769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3770 attached [pid 3770] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3770] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3769] <... futex resumed>) = 0 [pid 3769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3770] <... futex resumed>) = 1 [pid 3770] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [ 33.067902][ T3756] VFS: Busy inodes after unmount of ramfs. Self-destruct in 5 seconds. Have a nice day... [pid 3770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3769] <... futex resumed>) = 0 [pid 3769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3770] <... futex resumed>) = 1 [pid 3770] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3769] <... futex resumed>) = 0 [pid 3770] <... futex resumed>) = 1 [pid 3769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3770] umount2("./file0", MNT_DETACH [pid 3769] <... futex resumed>) = 0 [pid 3769] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3769] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3770] <... umount2 resumed>) = 0 [pid 3769] <... mmap resumed>) = 0x7fc84e05e000 [pid 3770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3769] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3770] <... futex resumed>) = 0 [pid 3770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3769] <... mprotect resumed>) = 0 [pid 3769] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3771 attached , parent_tid=[3771], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3771 [pid 3769] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3769] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3771] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3771] umount2("./file0", MNT_DETACH) = 0 [pid 3771] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3769] <... futex resumed>) = 0 [pid 3769] exit_group(0 [pid 3770] <... futex resumed>) = ? [pid 3769] <... exit_group resumed>) = ? [pid 3770] +++ exited with 0 +++ [pid 3771] <... futex resumed>) = ? [pid 3771] +++ exited with 0 +++ [pid 3769] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3769, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3772 attached , child_tidptr=0x5555564465d0) = 3772 [pid 3772] set_robust_list(0x5555564465e0, 24) = 0 [pid 3772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3772] setpgid(0, 0) = 0 [pid 3772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3772] write(3, "1000", 4) = 4 [pid 3772] close(3) = 0 [pid 3772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3772] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3772] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3773 attached , parent_tid=[3773], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3773 [pid 3772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3773] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3773] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3772] <... futex resumed>) = 0 [pid 3772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3773] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3772] <... futex resumed>) = 0 [pid 3773] <... mount resumed>) = 0 [pid 3772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3772] <... futex resumed>) = 0 [pid 3772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3773] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3772] <... futex resumed>) = 0 [pid 3772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3772] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3772] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3772] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3773] umount2("./file0", MNT_DETACH [pid 3772] <... clone resumed>, parent_tid=[3774], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3774 [pid 3772] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3772] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3774 attached [pid 3774] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3774] umount2("./file0", MNT_DETACH) = 0 [pid 3773] <... umount2 resumed>) = 0 [pid 3774] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3774] <... futex resumed>) = 1 [pid 3773] <... futex resumed>) = 0 [pid 3772] <... futex resumed>) = 0 [pid 3772] exit_group(0) = ? [pid 3773] +++ exited with 0 +++ [pid 3774] +++ exited with 0 +++ [pid 3772] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3772, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3775 attached , child_tidptr=0x5555564465d0) = 3775 [pid 3775] set_robust_list(0x5555564465e0, 24) = 0 [pid 3775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3775] setpgid(0, 0) = 0 [pid 3775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3775] write(3, "1000", 4) = 4 [pid 3775] close(3) = 0 [pid 3775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3775] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3775] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3776 attached , parent_tid=[3776], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3776 [pid 3776] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3776] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3776] <... futex resumed>) = 0 [pid 3776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3776] <... futex resumed>) = 0 [pid 3776] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3775] <... futex resumed>) = 0 [pid 3776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3776] <... futex resumed>) = 0 [pid 3776] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3776] <... mount resumed>) = 0 [pid 3776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3775] <... futex resumed>) = 0 [pid 3775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3775] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3775] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3775] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3776] umount2("./file0", MNT_DETACH [pid 3775] <... clone resumed>, parent_tid=[3777], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3777 [pid 3775] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3775] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3777 attached [pid 3777] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3777] umount2("./file0", MNT_DETACH) = 0 [pid 3777] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3775] <... futex resumed>) = 0 [pid 3777] <... futex resumed>) = 1 [pid 3777] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3776] <... umount2 resumed>) = 0 [pid 3776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3775] exit_group(0) = ? [pid 3776] <... futex resumed>) = ? [pid 3776] +++ exited with 0 +++ [pid 3777] <... futex resumed>) = ? [pid 3777] +++ exited with 0 +++ [pid 3775] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3775, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3778 attached , child_tidptr=0x5555564465d0) = 3778 [pid 3778] set_robust_list(0x5555564465e0, 24) = 0 [pid 3778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3778] setpgid(0, 0) = 0 [pid 3778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3778] write(3, "1000", 4) = 4 [pid 3778] close(3) = 0 [pid 3778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3778] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3778] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3779 attached , parent_tid=[3779], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3779 [pid 3779] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3779] <... futex resumed>) = 0 [pid 3779] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3779] <... futex resumed>) = 0 [pid 3779] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3779] <... mount resumed>) = 0 [pid 3779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3779] <... futex resumed>) = 0 [pid 3779] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3779] <... mount resumed>) = 0 [pid 3779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] <... futex resumed>) = 0 [pid 3778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3779] <... futex resumed>) = 0 [pid 3778] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3779] umount2("./file0", MNT_DETACH [pid 3778] <... futex resumed>) = 0 [pid 3779] <... umount2 resumed>) = 0 [pid 3779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3778] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3778] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3780 attached [pid 3780] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3780] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] <... clone resumed>, parent_tid=[3780], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3780 [pid 3778] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3780] <... futex resumed>) = 0 [pid 3780] umount2("./file0", MNT_DETACH) = 0 [pid 3780] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3778] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3780] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3778] exit_group(0 [pid 3779] <... futex resumed>) = ? [pid 3778] <... exit_group resumed>) = ? [pid 3779] +++ exited with 0 +++ [pid 3780] <... futex resumed>) = ? [pid 3780] +++ exited with 0 +++ [pid 3778] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3778, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3781 ./strace-static-x86_64: Process 3781 attached [pid 3781] set_robust_list(0x5555564465e0, 24) = 0 [pid 3781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3781] setpgid(0, 0) = 0 [pid 3781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3781] write(3, "1000", 4) = 4 [pid 3781] close(3) = 0 [pid 3781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3781] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3781] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3782], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3782 [pid 3781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3782 attached [pid 3782] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3782] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3782] <... futex resumed>) = 0 [pid 3782] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3782] <... futex resumed>) = 0 [pid 3782] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3782] <... mount resumed>) = 0 [pid 3782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3782] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3782] <... futex resumed>) = 0 [pid 3782] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3782] <... mount resumed>) = 0 [pid 3782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3782] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3781] <... futex resumed>) = 0 [pid 3781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3782] <... futex resumed>) = 0 [pid 3782] umount2("./file0", MNT_DETACH [pid 3781] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3782] <... umount2 resumed>) = 0 [pid 3781] <... futex resumed>) = 0 [pid 3782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3782] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3781] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3781] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3783 attached , parent_tid=[3783], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3783 [pid 3783] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3783] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3781] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3783] <... futex resumed>) = 0 [pid 3783] umount2("./file0", MNT_DETACH) = 0 [pid 3781] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3783] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3781] <... futex resumed>) = 0 [pid 3781] exit_group(0) = ? [pid 3782] <... futex resumed>) = ? [pid 3782] +++ exited with 0 +++ [pid 3783] +++ exited with 0 +++ [pid 3781] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3781, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3784 ./strace-static-x86_64: Process 3784 attached [pid 3784] set_robust_list(0x5555564465e0, 24) = 0 [pid 3784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3784] setpgid(0, 0) = 0 [pid 3784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3784] write(3, "1000", 4) = 4 [pid 3784] close(3) = 0 [pid 3784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3784] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3784] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3785 attached , parent_tid=[3785], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3785 [pid 3784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3785] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3785] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3784] <... futex resumed>) = 0 [pid 3785] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3785] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3784] <... futex resumed>) = 0 [pid 3784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3785] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3784] <... futex resumed>) = 0 [pid 3784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3785] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3785] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3784] <... futex resumed>) = 0 [pid 3784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3784] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3784] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3785] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3784] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3786], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3786 [pid 3784] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3784] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3786 attached [pid 3786] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3786] umount2("./file0", MNT_DETACH [pid 3785] umount2("./file0", MNT_DETACH [pid 3786] <... umount2 resumed>) = 0 [pid 3786] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3784] <... futex resumed>) = 0 [pid 3786] <... futex resumed>) = 1 [pid 3786] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3785] <... umount2 resumed>) = 0 [pid 3785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3785] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3784] exit_group(0) = ? [pid 3786] <... futex resumed>) = ? [pid 3786] +++ exited with 0 +++ [pid 3785] <... futex resumed>) = ? [pid 3785] +++ exited with 0 +++ [pid 3784] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3784, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3787 attached , child_tidptr=0x5555564465d0) = 3787 [pid 3787] set_robust_list(0x5555564465e0, 24) = 0 [pid 3787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3787] setpgid(0, 0) = 0 [pid 3787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3787] write(3, "1000", 4) = 4 [pid 3787] close(3) = 0 [pid 3787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3787] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3787] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3788 attached , parent_tid=[3788], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3788 [pid 3787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3788] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3788] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3787] <... futex resumed>) = 0 [pid 3788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3788] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3787] <... futex resumed>) = 0 [pid 3788] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3788] <... mount resumed>) = 0 [pid 3788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3787] <... futex resumed>) = 0 [pid 3788] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3788] <... mount resumed>) = 0 [pid 3787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3787] <... futex resumed>) = 0 [pid 3787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3787] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3787] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3787] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3789], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3789 [pid 3788] umount2("./file0", MNT_DETACH [pid 3787] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3787] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3789 attached [pid 3789] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3789] umount2("./file0", MNT_DETACH [pid 3788] <... umount2 resumed>) = 0 [pid 3788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3789] <... umount2 resumed>) = 0 [pid 3789] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3787] <... futex resumed>) = 0 [pid 3787] exit_group(0) = ? [pid 3789] +++ exited with 0 +++ [pid 3788] <... futex resumed>) = ? [pid 3788] +++ exited with 0 +++ [pid 3787] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3787, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3790 ./strace-static-x86_64: Process 3790 attached [pid 3790] set_robust_list(0x5555564465e0, 24) = 0 [pid 3790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3790] setpgid(0, 0) = 0 [pid 3790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3790] write(3, "1000", 4) = 4 [pid 3790] close(3) = 0 [pid 3790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3790] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3790] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3791], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3791 [pid 3790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3791 attached [pid 3791] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3791] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3790] <... futex resumed>) = 0 [pid 3790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3791] <... futex resumed>) = 1 [pid 3791] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3790] <... futex resumed>) = 0 [pid 3790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3791] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3790] <... futex resumed>) = 0 [pid 3790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3790] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3790] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3792 attached [pid 3791] umount2("./file0", MNT_DETACH [pid 3790] <... clone resumed>, parent_tid=[3792], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3792 [pid 3790] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3790] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3792] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3792] umount2("./file0", MNT_DETACH) = 0 [pid 3791] <... umount2 resumed>) = 0 [pid 3792] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3790] <... futex resumed>) = 0 [pid 3792] <... futex resumed>) = 1 [pid 3792] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3791] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3790] exit_group(0) = ? [pid 3791] <... futex resumed>) = ? [pid 3791] +++ exited with 0 +++ [pid 3792] <... futex resumed>) = ? [pid 3792] +++ exited with 0 +++ [pid 3790] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3790, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3793 ./strace-static-x86_64: Process 3793 attached [pid 3793] set_robust_list(0x5555564465e0, 24) = 0 [pid 3793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3793] setpgid(0, 0) = 0 [pid 3793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3793] write(3, "1000", 4) = 4 [pid 3793] close(3) = 0 [pid 3793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3793] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3793] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3793] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3794], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3794 ./strace-static-x86_64: Process 3794 attached [pid 3794] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3794] <... futex resumed>) = 0 [pid 3794] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3794] <... futex resumed>) = 0 [pid 3793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3794] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3793] <... futex resumed>) = 0 [pid 3794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3794] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3794] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3793] <... futex resumed>) = 0 [pid 3793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3793] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3793] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3793] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3794] umount2("./file0", MNT_DETACH [pid 3793] <... mprotect resumed>) = 0 [pid 3793] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3795], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3795 [pid 3793] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3794] <... umount2 resumed>) = 0 [pid 3793] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3795 attached [pid 3795] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3795] umount2("./file0", MNT_DETACH) = 0 [pid 3794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3795] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3793] <... futex resumed>) = 0 [pid 3793] exit_group(0) = ? [pid 3794] <... futex resumed>) = ? [pid 3794] +++ exited with 0 +++ [pid 3795] +++ exited with 0 +++ [pid 3793] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3793, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3796 attached , child_tidptr=0x5555564465d0) = 3796 [pid 3796] set_robust_list(0x5555564465e0, 24) = 0 [pid 3796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3796] setpgid(0, 0) = 0 [pid 3796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3796] write(3, "1000", 4) = 4 [pid 3796] close(3) = 0 [pid 3796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3796] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3796] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3797 attached , parent_tid=[3797], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3797 [pid 3797] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3797] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3797] <... futex resumed>) = 0 [pid 3796] <... futex resumed>) = 1 [pid 3797] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3797] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3796] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3797] <... futex resumed>) = 0 [pid 3797] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3796] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3797] <... mount resumed>) = 0 [pid 3797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3796] <... futex resumed>) = 0 [pid 3797] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3796] <... futex resumed>) = 0 [pid 3797] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3796] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3797] <... mount resumed>) = 0 [pid 3797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3796] <... futex resumed>) = 0 [pid 3797] umount2("./file0", MNT_DETACH [pid 3796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3796] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3796] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3796] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3798 attached , parent_tid=[3798], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3798 [pid 3798] set_robust_list(0x7fc84e07e9e0, 24 [pid 3796] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3798] <... set_robust_list resumed>) = 0 [pid 3796] <... futex resumed>) = 0 [pid 3798] umount2("./file0", MNT_DETACH [pid 3796] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3797] <... umount2 resumed>) = 0 [pid 3797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3798] <... umount2 resumed>) = 0 [pid 3797] <... futex resumed>) = 0 [pid 3798] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3797] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3798] <... futex resumed>) = 1 [pid 3796] <... futex resumed>) = 0 [pid 3796] exit_group(0) = ? [pid 3797] <... futex resumed>) = ? [pid 3797] +++ exited with 0 +++ [pid 3798] +++ exited with 0 +++ [pid 3796] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3796, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3799 ./strace-static-x86_64: Process 3799 attached [pid 3799] set_robust_list(0x5555564465e0, 24) = 0 [pid 3799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3799] setpgid(0, 0) = 0 [pid 3799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3799] write(3, "1000", 4) = 4 [pid 3799] close(3) = 0 [pid 3799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3799] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3799] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3800 attached , parent_tid=[3800], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3800 [pid 3799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3800] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3800] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3799] <... futex resumed>) = 0 [pid 3799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3800] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3799] <... futex resumed>) = 0 [pid 3799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3800] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3799] <... futex resumed>) = 0 [pid 3799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3799] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3799] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3801], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3801 [pid 3800] umount2("./file0", MNT_DETACH [pid 3799] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3799] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3801 attached [pid 3801] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3801] umount2("./file0", MNT_DETACH) = 0 [pid 3801] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3799] <... futex resumed>) = 0 [pid 3801] <... futex resumed>) = 1 [pid 3800] <... umount2 resumed>) = 0 [pid 3801] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3800] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3799] exit_group(0) = ? [pid 3800] <... futex resumed>) = ? [pid 3801] <... futex resumed>) = ? [pid 3800] +++ exited with 0 +++ [pid 3801] +++ exited with 0 +++ [pid 3799] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3799, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3802 attached , child_tidptr=0x5555564465d0) = 3802 [pid 3802] set_robust_list(0x5555564465e0, 24) = 0 [pid 3802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3802] setpgid(0, 0) = 0 [pid 3802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3802] write(3, "1000", 4) = 4 [pid 3802] close(3) = 0 [pid 3802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3802] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3802] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3803 attached [pid 3803] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3803] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3802] <... clone resumed>, parent_tid=[3803], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3803 [pid 3802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3802] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3803] <... futex resumed>) = 0 [pid 3803] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3802] <... futex resumed>) = 0 [pid 3802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3803] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3802] <... futex resumed>) = 0 [pid 3803] <... mount resumed>) = 0 [pid 3803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3803] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3802] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3803] <... futex resumed>) = 0 [pid 3803] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3802] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3803] <... mount resumed>) = 0 [pid 3803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3803] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3802] <... futex resumed>) = 0 [pid 3802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3803] <... futex resumed>) = 0 [pid 3803] umount2("./file0", MNT_DETACH [pid 3802] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3803] <... umount2 resumed>) = 0 [pid 3803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3803] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3802] <... futex resumed>) = 0 [pid 3802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3802] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3802] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3804 attached [pid 3804] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3804] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3802] <... clone resumed>, parent_tid=[3804], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3804 [pid 3802] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3804] <... futex resumed>) = 0 [pid 3802] <... futex resumed>) = 1 [pid 3804] umount2("./file0", MNT_DETACH) = 0 [pid 3802] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3804] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3802] <... futex resumed>) = 0 [pid 3802] exit_group(0 [pid 3803] <... futex resumed>) = ? [pid 3802] <... exit_group resumed>) = ? [pid 3803] +++ exited with 0 +++ [pid 3804] +++ exited with 0 +++ [pid 3802] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3802, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3805 ./strace-static-x86_64: Process 3805 attached [pid 3805] set_robust_list(0x5555564465e0, 24) = 0 [pid 3805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3805] setpgid(0, 0) = 0 [pid 3805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3805] write(3, "1000", 4) = 4 [pid 3805] close(3) = 0 [pid 3805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3805] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3805] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3806 attached , parent_tid=[3806], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3806 [pid 3805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3805] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3806] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3806] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3806] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3805] <... futex resumed>) = 0 [pid 3805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3806] <... futex resumed>) = 0 [pid 3806] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3805] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3806] <... mount resumed>) = 0 [pid 3806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3806] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3805] <... futex resumed>) = 0 [pid 3805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3805] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3806] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3806] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3806] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3805] <... futex resumed>) = 0 [pid 3805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3805] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3805] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3805] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3807], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3807 [pid 3806] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3805] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3805] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3807 attached [pid 3806] umount2("./file0", MNT_DETACH [pid 3807] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3807] umount2("./file0", MNT_DETACH) = 0 [pid 3807] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3805] <... futex resumed>) = 0 [pid 3807] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3806] <... umount2 resumed>) = 0 [pid 3806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3806] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3805] exit_group(0) = ? [pid 3806] <... futex resumed>) = ? [pid 3807] <... futex resumed>) = ? [pid 3806] +++ exited with 0 +++ [pid 3807] +++ exited with 0 +++ [pid 3805] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3805, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3808 ./strace-static-x86_64: Process 3808 attached [pid 3808] set_robust_list(0x5555564465e0, 24) = 0 [pid 3808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3808] setpgid(0, 0) = 0 [pid 3808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3808] write(3, "1000", 4) = 4 [pid 3808] close(3) = 0 [pid 3808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3808] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3808] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3809 attached , parent_tid=[3809], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3809 [pid 3808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3809] set_robust_list(0x7fc84e09f9e0, 24 [pid 3808] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3809] <... set_robust_list resumed>) = 0 [pid 3809] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3808] <... futex resumed>) = 0 [pid 3808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3809] <... futex resumed>) = 0 [pid 3809] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3808] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3809] <... mount resumed>) = 0 [pid 3809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3808] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3809] <... futex resumed>) = 0 [pid 3809] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3808] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3809] <... mount resumed>) = 0 [pid 3809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3808] <... futex resumed>) = 0 [pid 3808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3808] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3809] <... futex resumed>) = 0 [pid 3809] umount2("./file0", MNT_DETACH [pid 3808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3809] <... umount2 resumed>) = 0 [pid 3808] <... mmap resumed>) = 0x7fc84e05e000 [pid 3809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3808] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3808] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3810 attached , parent_tid=[3810], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3810 [pid 3810] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3810] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3808] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3810] <... futex resumed>) = 0 [pid 3810] umount2("./file0", MNT_DETACH) = 0 [pid 3808] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3810] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3808] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3808] exit_group(0 [pid 3809] <... futex resumed>) = ? [pid 3808] <... exit_group resumed>) = ? [pid 3809] +++ exited with 0 +++ [pid 3810] <... futex resumed>) = ? [pid 3810] +++ exited with 0 +++ [pid 3808] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3808, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3811 ./strace-static-x86_64: Process 3811 attached [pid 3811] set_robust_list(0x5555564465e0, 24) = 0 [pid 3811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3811] setpgid(0, 0) = 0 [pid 3811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3811] write(3, "1000", 4) = 4 [pid 3811] close(3) = 0 [pid 3811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3811] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3811] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3811] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3812 attached , parent_tid=[3812], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3812 [pid 3811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3811] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3812] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3812] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3812] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3811] <... futex resumed>) = 0 [pid 3811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3812] <... futex resumed>) = 0 [pid 3812] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3811] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3812] <... futex resumed>) = 0 [pid 3811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3812] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3811] <... futex resumed>) = 0 [pid 3812] <... mount resumed>) = 0 [pid 3811] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3812] <... futex resumed>) = 0 [pid 3811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3812] umount2("./file0", MNT_DETACH [pid 3811] <... futex resumed>) = 0 [pid 3811] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3812] <... umount2 resumed>) = 0 [pid 3811] <... futex resumed>) = 0 [pid 3812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3811] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3812] <... futex resumed>) = 0 [pid 3811] <... mmap resumed>) = 0x7fc84e05e000 [pid 3812] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3811] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3811] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3813 attached , parent_tid=[3813], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3813 [pid 3813] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3813] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3811] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3813] umount2("./file0", MNT_DETACH) = 0 [pid 3811] <... futex resumed>) = 0 [pid 3813] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3813] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3811] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3811] exit_group(0 [pid 3812] <... futex resumed>) = ? [pid 3812] +++ exited with 0 +++ [pid 3811] <... exit_group resumed>) = ? [pid 3813] <... futex resumed>) = ? [pid 3813] +++ exited with 0 +++ [pid 3811] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3811, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3814 ./strace-static-x86_64: Process 3814 attached [pid 3814] set_robust_list(0x5555564465e0, 24) = 0 [pid 3814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3814] setpgid(0, 0) = 0 [pid 3814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3814] write(3, "1000", 4) = 4 [pid 3814] close(3) = 0 [pid 3814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3814] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3814] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3815 attached , parent_tid=[3815], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3815 [pid 3815] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3815] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3815] <... futex resumed>) = 0 [pid 3814] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3815] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3814] <... futex resumed>) = 0 [pid 3814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3814] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3815] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3814] <... futex resumed>) = 0 [pid 3814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3814] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3815] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3814] <... futex resumed>) = 0 [pid 3815] umount2("./file0", MNT_DETACH [pid 3814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3814] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3815] <... umount2 resumed>) = 0 [pid 3814] <... mmap resumed>) = 0x7fc84e05e000 [pid 3815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3814] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3815] <... futex resumed>) = 0 [pid 3814] <... mprotect resumed>) = 0 [pid 3815] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3814] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3816 attached , parent_tid=[3816], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3816 [pid 3816] set_robust_list(0x7fc84e07e9e0, 24 [pid 3814] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3816] <... set_robust_list resumed>) = 0 [pid 3816] umount2("./file0", MNT_DETACH) = 0 [pid 3814] <... futex resumed>) = 0 [pid 3816] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3816] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3814] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3814] exit_group(0 [pid 3815] <... futex resumed>) = ? [pid 3814] <... exit_group resumed>) = ? [pid 3816] <... futex resumed>) = ? [pid 3816] +++ exited with 0 +++ [pid 3815] +++ exited with 0 +++ [pid 3814] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3814, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3817 attached , child_tidptr=0x5555564465d0) = 3817 [pid 3817] set_robust_list(0x5555564465e0, 24) = 0 [pid 3817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3817] setpgid(0, 0) = 0 [pid 3817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3817] write(3, "1000", 4) = 4 [pid 3817] close(3) = 0 [pid 3817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3817] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3817] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3817] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3818], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3818 [pid 3817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3817] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3818 attached [pid 3818] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3818] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3817] <... futex resumed>) = 0 [pid 3817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3817] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3818] <... futex resumed>) = 1 [pid 3818] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3817] <... futex resumed>) = 0 [pid 3818] <... futex resumed>) = 1 [pid 3817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3818] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3817] <... futex resumed>) = 0 [pid 3817] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3818] <... mount resumed>) = 0 [pid 3818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3817] <... futex resumed>) = 0 [pid 3817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3817] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3817] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3817] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3817] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3818] umount2("./file0", MNT_DETACH [pid 3817] <... clone resumed>, parent_tid=[3819], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3819 [pid 3817] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3818] <... umount2 resumed>) = 0 [pid 3817] <... futex resumed>) = 0 [pid 3817] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3819 attached [pid 3818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3819] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3819] umount2("./file0", MNT_DETACH [pid 3818] <... futex resumed>) = 0 [pid 3818] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3819] <... umount2 resumed>) = 0 [pid 3819] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3817] <... futex resumed>) = 0 [pid 3819] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3817] exit_group(0 [pid 3819] <... futex resumed>) = 231 [pid 3817] <... exit_group resumed>) = ? [pid 3818] <... futex resumed>) = ? [pid 3818] +++ exited with 0 +++ [pid 3819] +++ exited with 0 +++ [pid 3817] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3817, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3820 attached , child_tidptr=0x5555564465d0) = 3820 [pid 3820] set_robust_list(0x5555564465e0, 24) = 0 [pid 3820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3820] setpgid(0, 0) = 0 [pid 3820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3820] write(3, "1000", 4) = 4 [pid 3820] close(3) = 0 [pid 3820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3820] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3820] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3821 attached , parent_tid=[3821], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3821 [pid 3820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3820] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3821] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3821] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3820] <... futex resumed>) = 0 [pid 3820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3820] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3821] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3820] <... futex resumed>) = 0 [pid 3820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3821] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3820] <... futex resumed>) = 0 [pid 3820] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3821] <... mount resumed>) = 0 [pid 3821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3820] <... futex resumed>) = 0 [pid 3820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3820] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3821] umount2("./file0", MNT_DETACH [pid 3820] <... mmap resumed>) = 0x7fc84e05e000 [pid 3820] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3820] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3822], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3822 [pid 3820] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3820] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3822 attached [pid 3822] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3822] umount2("./file0", MNT_DETACH [pid 3821] <... umount2 resumed>) = 0 [pid 3821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3821] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3822] <... umount2 resumed>) = 0 [pid 3822] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3820] <... futex resumed>) = 0 [pid 3820] exit_group(0) = ? [pid 3821] <... futex resumed>) = ? [pid 3822] +++ exited with 0 +++ [pid 3821] +++ exited with 0 +++ [pid 3820] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3820, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3823 ./strace-static-x86_64: Process 3823 attached [pid 3823] set_robust_list(0x5555564465e0, 24) = 0 [pid 3823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3823] setpgid(0, 0) = 0 [pid 3823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3823] write(3, "1000", 4) = 4 [pid 3823] close(3) = 0 [pid 3823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3823] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3823] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3823] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3824], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3824 [pid 3823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3823] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3824 attached [pid 3824] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3824] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3823] <... futex resumed>) = 0 [pid 3824] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3823] <... futex resumed>) = 0 [pid 3824] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3823] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3824] <... mount resumed>) = 0 [pid 3824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3823] <... futex resumed>) = 0 [pid 3823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3823] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3824] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3823] <... futex resumed>) = 0 [pid 3823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3823] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3823] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3823] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3823] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3825], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3825 [pid 3824] umount2("./file0", MNT_DETACH [pid 3823] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3823] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3825 attached [pid 3825] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3824] <... umount2 resumed>) = 0 [pid 3825] umount2("./file0", MNT_DETACH [pid 3824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3825] <... umount2 resumed>) = 0 [pid 3824] <... futex resumed>) = 0 [pid 3825] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3824] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3825] <... futex resumed>) = 1 [pid 3823] <... futex resumed>) = 0 [pid 3823] exit_group(0) = ? [pid 3824] <... futex resumed>) = ? [pid 3825] +++ exited with 0 +++ [pid 3824] +++ exited with 0 +++ [pid 3823] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3823, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3826 ./strace-static-x86_64: Process 3826 attached [pid 3826] set_robust_list(0x5555564465e0, 24) = 0 [pid 3826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3826] setpgid(0, 0) = 0 [pid 3826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3826] write(3, "1000", 4) = 4 [pid 3826] close(3) = 0 [pid 3826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3826] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3826] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3827 attached , parent_tid=[3827], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3827 [pid 3827] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3827] <... futex resumed>) = 0 [pid 3827] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3827] <... futex resumed>) = 0 [pid 3827] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3826] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3827] <... futex resumed>) = 0 [pid 3826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3827] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3826] <... futex resumed>) = 0 [pid 3827] <... mount resumed>) = 0 [pid 3826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3826] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3827] <... futex resumed>) = 0 [pid 3826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3827] umount2("./file0", MNT_DETACH [pid 3826] <... futex resumed>) = 0 [pid 3826] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3827] <... umount2 resumed>) = 0 [pid 3826] <... futex resumed>) = 0 [pid 3827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3827] <... futex resumed>) = 0 [pid 3826] <... mmap resumed>) = 0x7fc84e05e000 [pid 3827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3826] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3826] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3828 attached , parent_tid=[3828], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3828 [pid 3828] set_robust_list(0x7fc84e07e9e0, 24 [pid 3826] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3828] <... set_robust_list resumed>) = 0 [pid 3826] <... futex resumed>) = 0 [pid 3828] umount2("./file0", MNT_DETACH [pid 3826] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3828] <... umount2 resumed>) = 0 [pid 3828] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3826] <... futex resumed>) = 0 [pid 3828] <... futex resumed>) = 1 [pid 3826] exit_group(0 [pid 3828] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3826] <... exit_group resumed>) = ? [pid 3827] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3828] <... futex resumed>) = ? [pid 3827] +++ exited with 0 +++ [pid 3828] +++ exited with 0 +++ [pid 3826] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3826, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3829 attached , child_tidptr=0x5555564465d0) = 3829 [pid 3829] set_robust_list(0x5555564465e0, 24) = 0 [pid 3829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3829] setpgid(0, 0) = 0 [pid 3829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3829] write(3, "1000", 4) = 4 [pid 3829] close(3) = 0 [pid 3829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3829] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3829] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3829] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3830 attached [pid 3830] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3830] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] <... clone resumed>, parent_tid=[3830], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3830 [pid 3829] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3830] <... futex resumed>) = 0 [pid 3830] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3830] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3830] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3829] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3830] <... futex resumed>) = 0 [pid 3830] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3830] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3830] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3829] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3830] <... futex resumed>) = 0 [pid 3830] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3829] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3830] <... mount resumed>) = 0 [pid 3830] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3830] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3829] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3830] <... futex resumed>) = 0 [pid 3830] umount2("./file0", MNT_DETACH [pid 3829] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3830] <... umount2 resumed>) = 0 [pid 3830] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3830] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] <... futex resumed>) = 0 [pid 3829] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3829] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3829] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3831 attached [pid 3831] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3831] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] <... clone resumed>, parent_tid=[3831], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3831 [pid 3829] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3831] <... futex resumed>) = 0 [pid 3831] umount2("./file0", MNT_DETACH [pid 3829] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3831] <... umount2 resumed>) = 0 [pid 3831] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3831] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3829] exit_group(0 [pid 3830] <... futex resumed>) = ? [pid 3829] <... exit_group resumed>) = ? [pid 3830] +++ exited with 0 +++ [pid 3831] <... futex resumed>) = ? [pid 3831] +++ exited with 0 +++ [pid 3829] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3829, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3832 ./strace-static-x86_64: Process 3832 attached [pid 3832] set_robust_list(0x5555564465e0, 24) = 0 [pid 3832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3832] setpgid(0, 0) = 0 [pid 3832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3832] write(3, "1000", 4) = 4 [pid 3832] close(3) = 0 [pid 3832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3832] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3832] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3833 attached [pid 3833] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3833] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3832] <... clone resumed>, parent_tid=[3833], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3833 [pid 3832] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3833] <... futex resumed>) = 0 [pid 3832] <... futex resumed>) = 1 [pid 3833] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3832] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3833] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3833] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3832] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3833] <... futex resumed>) = 0 [pid 3833] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3832] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3833] <... mount resumed>) = 0 [pid 3833] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3833] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3832] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3833] <... futex resumed>) = 0 [pid 3833] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3832] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3833] <... mount resumed>) = 0 [pid 3833] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3833] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3832] <... futex resumed>) = 0 [pid 3832] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3833] <... futex resumed>) = 0 [pid 3833] umount2("./file0", MNT_DETACH [pid 3832] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3833] <... umount2 resumed>) = 0 [pid 3832] <... futex resumed>) = 0 [pid 3833] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3833] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3832] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3832] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3834 attached , parent_tid=[3834], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3834 [pid 3834] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3832] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3834] umount2("./file0", MNT_DETACH [pid 3832] <... futex resumed>) = 0 [pid 3832] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3834] <... umount2 resumed>) = 0 [pid 3834] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3832] <... futex resumed>) = 0 [pid 3834] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3832] exit_group(0 [pid 3834] <... futex resumed>) = 230 [pid 3832] <... exit_group resumed>) = ? [pid 3833] <... futex resumed>) = ? [pid 3833] +++ exited with 0 +++ [pid 3834] +++ exited with 0 +++ [pid 3832] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3832, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3835 ./strace-static-x86_64: Process 3835 attached [pid 3835] set_robust_list(0x5555564465e0, 24) = 0 [ 33.335477][ T3822] VFS: Busy inodes after unmount of ramfs. Self-destruct in 5 seconds. Have a nice day... [pid 3835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3835] setpgid(0, 0) = 0 [pid 3835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3835] write(3, "1000", 4) = 4 [pid 3835] close(3) = 0 [pid 3835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3835] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3835] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3835] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3836 attached , parent_tid=[3836], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3836 [pid 3836] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3836] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3836] <... futex resumed>) = 0 [pid 3836] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3836] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3836] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3835] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3836] <... futex resumed>) = 0 [pid 3836] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3835] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3836] <... mount resumed>) = 0 [pid 3836] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3836] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3835] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3836] <... futex resumed>) = 0 [pid 3836] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3835] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3836] <... mount resumed>) = 0 [pid 3836] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3836] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3835] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3836] <... futex resumed>) = 0 [pid 3836] umount2("./file0", MNT_DETACH [pid 3835] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3836] <... umount2 resumed>) = 0 [pid 3836] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3836] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3835] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3835] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3837 attached , parent_tid=[3837], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3837 [pid 3837] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3837] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3837] <... futex resumed>) = 0 [pid 3837] umount2("./file0", MNT_DETACH [pid 3835] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3837] <... umount2 resumed>) = 0 [pid 3837] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3837] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3835] exit_group(0) = ? [pid 3836] <... futex resumed>) = ? [pid 3836] +++ exited with 0 +++ [pid 3837] <... futex resumed>) = ? [pid 3837] +++ exited with 0 +++ [pid 3835] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3835, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3838 ./strace-static-x86_64: Process 3838 attached [pid 3838] set_robust_list(0x5555564465e0, 24) = 0 [pid 3838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3838] setpgid(0, 0) = 0 [pid 3838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3838] write(3, "1000", 4) = 4 [pid 3838] close(3) = 0 [pid 3838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3838] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3838] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3839 attached , parent_tid=[3839], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3839 [pid 3839] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3839] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3838] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3839] <... futex resumed>) = 0 [pid 3838] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3839] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3839] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3838] <... futex resumed>) = 0 [pid 3838] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3838] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3839] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3839] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3838] <... futex resumed>) = 0 [pid 3838] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3838] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3839] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3839] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3838] <... futex resumed>) = 0 [pid 3839] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3838] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3839] umount2("./file0", MNT_DETACH [pid 3838] <... futex resumed>) = 0 [pid 3838] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3838] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3838] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3840], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3840 [pid 3838] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3838] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3840 attached [pid 3840] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3840] umount2("./file0", MNT_DETACH [pid 3839] <... umount2 resumed>) = 0 [pid 3839] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3840] <... umount2 resumed>) = 0 [pid 3840] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3838] <... futex resumed>) = 0 [pid 3838] exit_group(0) = ? [pid 3839] <... futex resumed>) = ? [pid 3840] <... futex resumed>) = ? [pid 3840] +++ exited with 0 +++ [pid 3839] +++ exited with 0 +++ [pid 3838] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3838, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3841 ./strace-static-x86_64: Process 3841 attached [pid 3841] set_robust_list(0x5555564465e0, 24) = 0 [pid 3841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3841] setpgid(0, 0) = 0 [pid 3841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3841] write(3, "1000", 4) = 4 [pid 3841] close(3) = 0 [pid 3841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3841] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3841] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3841] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3842 attached , parent_tid=[3842], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3842 [pid 3842] set_robust_list(0x7fc84e09f9e0, 24 [pid 3841] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3842] <... set_robust_list resumed>) = 0 [pid 3841] <... futex resumed>) = 0 [pid 3841] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3842] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3842] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3841] <... futex resumed>) = 0 [pid 3842] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3841] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3841] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3842] <... mount resumed>) = 0 [pid 3842] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3841] <... futex resumed>) = 0 [pid 3842] <... futex resumed>) = 1 [pid 3841] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3842] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3841] <... futex resumed>) = 0 [pid 3841] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3842] <... mount resumed>) = 0 [pid 3842] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3841] <... futex resumed>) = 0 [pid 3842] umount2("./file0", MNT_DETACH [pid 3841] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3841] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3841] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3842] <... umount2 resumed>) = 0 [pid 3841] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3841] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3843], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3843 [pid 3841] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3841] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3843 attached [pid 3843] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3843] umount2("./file0", MNT_DETACH [pid 3842] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3842] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3843] <... umount2 resumed>) = 0 [pid 3843] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3841] <... futex resumed>) = 0 [pid 3841] exit_group(0) = ? [pid 3842] <... futex resumed>) = ? [pid 3843] <... futex resumed>) = ? [pid 3842] +++ exited with 0 +++ [pid 3843] +++ exited with 0 +++ [pid 3841] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3841, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3844 ./strace-static-x86_64: Process 3844 attached [pid 3844] set_robust_list(0x5555564465e0, 24) = 0 [pid 3844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3844] setpgid(0, 0) = 0 [pid 3844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3844] write(3, "1000", 4) = 4 [pid 3844] close(3) = 0 [pid 3844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3844] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3844] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3845 attached [pid 3845] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3845] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3844] <... clone resumed>, parent_tid=[3845], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3845 [pid 3844] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3845] <... futex resumed>) = 0 [pid 3845] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3845] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3845] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3844] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3844] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3845] <... futex resumed>) = 0 [pid 3845] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3844] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3845] <... mount resumed>) = 0 [pid 3845] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3845] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3844] <... futex resumed>) = 0 [pid 3844] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3844] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3845] <... futex resumed>) = 0 [pid 3845] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3845] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3844] <... futex resumed>) = 0 [pid 3845] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3844] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3845] umount2("./file0", MNT_DETACH [pid 3844] <... futex resumed>) = 0 [pid 3844] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3844] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3845] <... umount2 resumed>) = 0 [pid 3844] <... mprotect resumed>) = 0 [pid 3845] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3844] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3845] <... futex resumed>) = 0 [pid 3845] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3846 attached [pid 3844] <... clone resumed>, parent_tid=[3846], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3846 [pid 3846] set_robust_list(0x7fc84e07e9e0, 24 [pid 3844] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3846] <... set_robust_list resumed>) = 0 [pid 3844] <... futex resumed>) = 0 [pid 3846] umount2("./file0", MNT_DETACH [pid 3844] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3846] <... umount2 resumed>) = 0 [pid 3846] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3844] <... futex resumed>) = 0 [pid 3846] <... futex resumed>) = 1 [pid 3844] exit_group(0) = ? [pid 3845] <... futex resumed>) = ? [pid 3845] +++ exited with 0 +++ [pid 3846] +++ exited with 0 +++ [pid 3844] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3844, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3847 ./strace-static-x86_64: Process 3847 attached [pid 3847] set_robust_list(0x5555564465e0, 24) = 0 [pid 3847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3847] setpgid(0, 0) = 0 [pid 3847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3847] write(3, "1000", 4) = 4 [pid 3847] close(3) = 0 [pid 3847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3847] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3847] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3847] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3848 attached [pid 3848] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3848] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3847] <... clone resumed>, parent_tid=[3848], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3848 [pid 3847] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3848] <... futex resumed>) = 0 [pid 3847] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3848] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3848] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3848] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3847] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3848] <... futex resumed>) = 0 [pid 3848] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3847] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3848] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3848] <... futex resumed>) = 0 [pid 3847] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3848] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3847] <... futex resumed>) = 0 [pid 3848] <... mount resumed>) = 0 [pid 3847] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3848] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3848] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3847] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3848] <... futex resumed>) = 0 [pid 3848] umount2("./file0", MNT_DETACH [pid 3847] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3847] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3847] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3847] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3848] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3849 attached [pid 3847] <... clone resumed>, parent_tid=[3849], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3849 [pid 3849] set_robust_list(0x7fc84e07e9e0, 24 [pid 3847] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3849] <... set_robust_list resumed>) = 0 [pid 3847] <... futex resumed>) = 0 [pid 3849] umount2("./file0", MNT_DETACH [pid 3847] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3849] <... umount2 resumed>) = 0 [pid 3849] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3848] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3849] <... futex resumed>) = 1 [pid 3847] <... futex resumed>) = 0 [pid 3849] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3848] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3847] exit_group(0) = ? [pid 3849] <... futex resumed>) = ? [pid 3848] <... futex resumed>) = ? [pid 3849] +++ exited with 0 +++ [pid 3848] +++ exited with 0 +++ [pid 3847] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3847, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3850 ./strace-static-x86_64: Process 3850 attached [pid 3850] set_robust_list(0x5555564465e0, 24) = 0 [pid 3850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3850] setpgid(0, 0) = 0 [pid 3850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3850] write(3, "1000", 4) = 4 [pid 3850] close(3) = 0 [pid 3850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3850] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3850] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3851], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3851 [pid 3850] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3850] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3851 attached [pid 3851] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3851] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3851] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3850] <... futex resumed>) = 0 [pid 3850] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3850] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3851] <... futex resumed>) = 1 [pid 3851] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3851] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3850] <... futex resumed>) = 0 [pid 3850] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3850] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3851] <... futex resumed>) = 1 [pid 3851] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3851] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3850] <... futex resumed>) = 0 [pid 3851] umount2("./file0", MNT_DETACH [pid 3850] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3850] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3850] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3850] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3851] <... umount2 resumed>) = 0 [pid 3851] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3850] <... clone resumed>, parent_tid=[3852], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3852 [pid 3851] <... futex resumed>) = 0 [pid 3850] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3851] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3850] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3852 attached [pid 3850] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3852] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3852] umount2("./file0", MNT_DETACH) = 0 [pid 3852] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3850] <... futex resumed>) = 0 [pid 3852] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3850] exit_group(0) = ? [pid 3851] <... futex resumed>) = ? [pid 3851] +++ exited with 0 +++ [pid 3852] <... futex resumed>) = ? [pid 3852] +++ exited with 0 +++ [pid 3850] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3850, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3853 ./strace-static-x86_64: Process 3853 attached [pid 3853] set_robust_list(0x5555564465e0, 24) = 0 [pid 3853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3853] setpgid(0, 0) = 0 [pid 3853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3853] write(3, "1000", 4) = 4 [pid 3853] close(3) = 0 [pid 3853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3853] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3853] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3853] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3854 attached , parent_tid=[3854], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3854 [pid 3854] set_robust_list(0x7fc84e09f9e0, 24 [pid 3853] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3854] <... set_robust_list resumed>) = 0 [pid 3853] <... futex resumed>) = 0 [pid 3853] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3854] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3854] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3853] <... futex resumed>) = 0 [pid 3854] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3853] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3853] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3854] <... mount resumed>) = 0 [pid 3854] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3853] <... futex resumed>) = 0 [pid 3854] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3853] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3853] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3854] <... mount resumed>) = 0 [pid 3854] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3853] <... futex resumed>) = 0 [pid 3853] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3853] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3853] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3853] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3853] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3854] umount2("./file0", MNT_DETACH [pid 3853] <... clone resumed>, parent_tid=[3855], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3855 [pid 3853] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3853] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3855 attached [pid 3855] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3855] umount2("./file0", MNT_DETACH) = 0 [pid 3855] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3853] <... futex resumed>) = 0 [pid 3855] <... futex resumed>) = 1 [pid 3855] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3854] <... umount2 resumed>) = 0 [pid 3854] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3854] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3853] exit_group(0) = ? [pid 3854] <... futex resumed>) = ? [pid 3855] <... futex resumed>) = ? [pid 3855] +++ exited with 0 +++ [pid 3854] +++ exited with 0 +++ [pid 3853] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3853, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3856 attached , child_tidptr=0x5555564465d0) = 3856 [pid 3856] set_robust_list(0x5555564465e0, 24) = 0 [pid 3856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3856] setpgid(0, 0) = 0 [pid 3856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3856] write(3, "1000", 4) = 4 [pid 3856] close(3) = 0 [pid 3856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3856] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3856] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3857], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3857 [pid 3856] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3857 attached [pid 3857] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3857] mkdir("./file0", 000 [pid 3856] <... futex resumed>) = 0 [pid 3857] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3857] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3857] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3856] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3856] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3857] <... futex resumed>) = 0 [pid 3857] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3856] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3857] <... mount resumed>) = 0 [pid 3857] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3857] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3856] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3857] <... futex resumed>) = 0 [pid 3856] <... futex resumed>) = 1 [pid 3857] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3856] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3857] <... mount resumed>) = 0 [pid 3857] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3857] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3856] <... futex resumed>) = 0 [pid 3856] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3857] <... futex resumed>) = 0 [pid 3857] umount2("./file0", MNT_DETACH [pid 3856] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3857] <... umount2 resumed>) = 0 [pid 3856] <... futex resumed>) = 0 [pid 3857] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3857] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3856] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3856] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3858 attached , parent_tid=[3858], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3858 [pid 3858] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3858] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3856] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3858] <... futex resumed>) = 0 [pid 3858] umount2("./file0", MNT_DETACH [pid 3856] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3858] <... umount2 resumed>) = 0 [pid 3858] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3856] <... futex resumed>) = 0 [pid 3858] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3856] exit_group(0 [pid 3857] <... futex resumed>) = ? [pid 3856] <... exit_group resumed>) = ? [pid 3857] +++ exited with 0 +++ [pid 3858] <... futex resumed>) = ? [pid 3858] +++ exited with 0 +++ [pid 3856] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3856, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3859 ./strace-static-x86_64: Process 3859 attached [pid 3859] set_robust_list(0x5555564465e0, 24) = 0 [pid 3859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3859] setpgid(0, 0) = 0 [pid 3859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3859] write(3, "1000", 4) = 4 [pid 3859] close(3) = 0 [pid 3859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3859] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3859] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3859] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3860 attached , parent_tid=[3860], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3860 [pid 3860] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3860] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3859] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3860] <... futex resumed>) = 0 [pid 3860] mkdir("./file0", 000 [pid 3859] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3860] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3860] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3860] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3859] <... futex resumed>) = 0 [pid 3859] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3860] <... futex resumed>) = 0 [pid 3860] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3859] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3860] <... mount resumed>) = 0 [pid 3860] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3860] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3859] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3860] <... futex resumed>) = 0 [pid 3859] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3860] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3860] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3860] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3859] <... futex resumed>) = 0 [pid 3859] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3860] <... futex resumed>) = 0 [pid 3859] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3860] umount2("./file0", MNT_DETACH [pid 3859] <... futex resumed>) = 0 [pid 3859] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3860] <... umount2 resumed>) = 0 [pid 3859] <... mmap resumed>) = 0x7fc84e05e000 [pid 3860] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3859] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3860] <... futex resumed>) = 0 [pid 3860] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3859] <... mprotect resumed>) = 0 [pid 3859] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3861 attached , parent_tid=[3861], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3861 [pid 3861] set_robust_list(0x7fc84e07e9e0, 24 [pid 3859] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3861] <... set_robust_list resumed>) = 0 [pid 3859] <... futex resumed>) = 0 [pid 3861] umount2("./file0", MNT_DETACH [pid 3859] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3861] <... umount2 resumed>) = 0 [pid 3861] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3859] <... futex resumed>) = 0 [pid 3861] <... futex resumed>) = 1 [pid 3859] exit_group(0 [pid 3861] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3859] <... exit_group resumed>) = ? [pid 3860] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3861] <... futex resumed>) = ? [pid 3860] +++ exited with 0 +++ [pid 3861] +++ exited with 0 +++ [pid 3859] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3859, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3862 ./strace-static-x86_64: Process 3862 attached [pid 3862] set_robust_list(0x5555564465e0, 24) = 0 [pid 3862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3862] setpgid(0, 0) = 0 [pid 3862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3862] write(3, "1000", 4) = 4 [pid 3862] close(3) = 0 [pid 3862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3862] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3862] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3863 attached , parent_tid=[3863], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3863 [pid 3863] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3863] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3862] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3863] <... futex resumed>) = 0 [pid 3863] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3862] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3863] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3863] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3862] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3863] <... futex resumed>) = 0 [pid 3863] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3862] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3863] <... mount resumed>) = 0 [pid 3863] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3863] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3862] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3863] <... futex resumed>) = 0 [pid 3863] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3862] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3863] <... mount resumed>) = 0 [pid 3863] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3862] <... futex resumed>) = 0 [pid 3862] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3862] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3862] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3862] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3863] umount2("./file0", MNT_DETACH [pid 3862] <... clone resumed>, parent_tid=[3864], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3864 [pid 3863] <... umount2 resumed>) = 0 [pid 3863] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3862] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3862] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3864 attached [pid 3864] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3864] umount2("./file0", MNT_DETACH [pid 3863] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3864] <... umount2 resumed>) = 0 [pid 3864] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3862] <... futex resumed>) = 0 [pid 3862] exit_group(0) = ? [pid 3863] <... futex resumed>) = ? [pid 3864] <... futex resumed>) = ? [pid 3864] +++ exited with 0 +++ [pid 3863] +++ exited with 0 +++ [pid 3862] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3862, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3865 attached , child_tidptr=0x5555564465d0) = 3865 [pid 3865] set_robust_list(0x5555564465e0, 24) = 0 [pid 3865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3865] setpgid(0, 0) = 0 [pid 3865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3865] write(3, "1000", 4) = 4 [pid 3865] close(3) = 0 [pid 3865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3865] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3865] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3866 attached , parent_tid=[3866], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3866 [pid 3866] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3866] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3865] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3866] <... futex resumed>) = 0 [pid 3866] mkdir("./file0", 000 [pid 3865] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3866] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3866] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3865] <... futex resumed>) = 0 [pid 3865] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3865] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3866] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3866] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3865] <... futex resumed>) = 0 [pid 3865] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3865] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3866] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3866] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3865] <... futex resumed>) = 0 [pid 3865] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3865] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3865] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3866] umount2("./file0", MNT_DETACH [pid 3865] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3866] <... umount2 resumed>) = 0 [pid 3865] <... clone resumed>, parent_tid=[3867], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3867 [pid 3865] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3865] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3867 attached [pid 3867] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3867] umount2("./file0", MNT_DETACH [pid 3866] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3867] <... umount2 resumed>) = 0 [pid 3867] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3865] <... futex resumed>) = 0 [pid 3865] exit_group(0) = ? [pid 3867] <... futex resumed>) = ? [pid 3866] +++ exited with 0 +++ [pid 3867] +++ exited with 0 +++ [pid 3865] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3865, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3868 ./strace-static-x86_64: Process 3868 attached [pid 3868] set_robust_list(0x5555564465e0, 24) = 0 [pid 3868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3868] setpgid(0, 0) = 0 [pid 3868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3868] write(3, "1000", 4) = 4 [pid 3868] close(3) = 0 [pid 3868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3868] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3868] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3869 attached [pid 3869] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3869] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3868] <... clone resumed>, parent_tid=[3869], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3869 [pid 3868] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3869] <... futex resumed>) = 0 [pid 3869] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3869] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3868] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3869] <... futex resumed>) = 0 [pid 3868] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3869] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3869] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3869] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3868] <... futex resumed>) = 1 [pid 3869] <... futex resumed>) = 0 [pid 3869] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3868] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3868] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3869] <... futex resumed>) = 0 [pid 3869] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3868] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3869] <... mount resumed>) = 0 [pid 3869] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3868] <... futex resumed>) = 0 [pid 3868] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3869] umount2("./file0", MNT_DETACH [pid 3868] <... futex resumed>) = 0 [pid 3868] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3869] <... umount2 resumed>) = 0 [pid 3868] <... mmap resumed>) = 0x7fc84e05e000 [pid 3868] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3869] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3868] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3869] <... futex resumed>) = 0 [pid 3868] <... clone resumed>, parent_tid=[3870], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3870 [pid 3868] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3868] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3870 attached [pid 3870] set_robust_list(0x7fc84e07e9e0, 24 [pid 3869] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3870] <... set_robust_list resumed>) = 0 [pid 3870] umount2("./file0", MNT_DETACH) = 0 [pid 3870] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3868] <... futex resumed>) = 0 [pid 3868] exit_group(0) = ? [pid 3869] <... futex resumed>) = ? [pid 3870] <... futex resumed>) = ? [pid 3870] +++ exited with 0 +++ [pid 3869] +++ exited with 0 +++ [pid 3868] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3868, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3871 ./strace-static-x86_64: Process 3871 attached [pid 3871] set_robust_list(0x5555564465e0, 24) = 0 [pid 3871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3871] setpgid(0, 0) = 0 [pid 3871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3871] write(3, "1000", 4) = 4 [pid 3871] close(3) = 0 [pid 3871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3871] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3871] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3871] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3872 attached , parent_tid=[3872], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3872 [pid 3872] set_robust_list(0x7fc84e09f9e0, 24 [pid 3871] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3872] <... set_robust_list resumed>) = 0 [pid 3871] <... futex resumed>) = 0 [pid 3872] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3872] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3872] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3871] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3871] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3872] <... futex resumed>) = 0 [pid 3871] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3872] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3872] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3871] <... futex resumed>) = 0 [pid 3872] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3871] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3872] <... futex resumed>) = 0 [pid 3871] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3872] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3872] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3871] <... futex resumed>) = 0 [pid 3872] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3871] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3872] umount2("./file0", MNT_DETACH [pid 3871] <... futex resumed>) = 0 [pid 3871] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3871] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3871] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3872] <... umount2 resumed>) = 0 [pid 3871] <... mprotect resumed>) = 0 [pid 3872] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3871] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3872] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3873 attached [pid 3872] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3871] <... clone resumed>, parent_tid=[3873], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3873 [pid 3873] set_robust_list(0x7fc84e07e9e0, 24 [pid 3871] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3873] <... set_robust_list resumed>) = 0 [pid 3871] <... futex resumed>) = 0 [pid 3873] umount2("./file0", MNT_DETACH [pid 3871] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3873] <... umount2 resumed>) = 0 [pid 3873] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3871] <... futex resumed>) = 0 [pid 3873] <... futex resumed>) = 1 [pid 3871] exit_group(0 [pid 3873] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3871] <... exit_group resumed>) = ? [pid 3872] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3873] <... futex resumed>) = ? [pid 3872] +++ exited with 0 +++ [pid 3873] +++ exited with 0 +++ [pid 3871] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3871, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3874 ./strace-static-x86_64: Process 3874 attached [pid 3874] set_robust_list(0x5555564465e0, 24) = 0 [pid 3874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3874] setpgid(0, 0) = 0 [pid 3874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3874] write(3, "1000", 4) = 4 [pid 3874] close(3) = 0 [pid 3874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3874] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3874] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3875 attached , parent_tid=[3875], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3875 [pid 3875] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3875] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3874] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3875] <... futex resumed>) = 0 [pid 3874] <... futex resumed>) = 1 [pid 3875] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3874] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3875] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3874] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3875] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3875] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3874] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3875] <... mount resumed>) = 0 [pid 3875] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3875] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3874] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3875] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3875] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3875] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3875] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3874] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3875] <... futex resumed>) = 0 [pid 3874] <... futex resumed>) = 1 [pid 3875] umount2("./file0", MNT_DETACH [pid 3874] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3874] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3874] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3875] <... umount2 resumed>) = 0 [pid 3875] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3874] <... clone resumed>, parent_tid=[3876], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3876 [pid 3875] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3875] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3874] <... futex resumed>) = 0 [pid 3874] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3876 attached [pid 3876] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3876] umount2("./file0", MNT_DETACH) = 0 [pid 3876] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3874] <... futex resumed>) = 0 [pid 3874] exit_group(0) = ? [pid 3875] <... futex resumed>) = ? [pid 3875] +++ exited with 0 +++ [pid 3876] +++ exited with 0 +++ [pid 3874] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3874, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3877 ./strace-static-x86_64: Process 3877 attached [pid 3877] set_robust_list(0x5555564465e0, 24) = 0 [pid 3877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3877] setpgid(0, 0) = 0 [pid 3877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3877] write(3, "1000", 4) = 4 [pid 3877] close(3) = 0 [pid 3877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3877] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3877] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3877] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3878 attached , parent_tid=[3878], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3878 [pid 3877] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3877] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3878] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3878] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3878] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3877] <... futex resumed>) = 0 [pid 3877] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3877] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3878] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3878] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3877] <... futex resumed>) = 0 [pid 3877] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3877] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3878] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3878] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3877] <... futex resumed>) = 0 [pid 3877] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3877] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3877] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3877] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3877] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3879 attached , parent_tid=[3879], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3879 [pid 3879] set_robust_list(0x7fc84e07e9e0, 24 [pid 3877] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3879] <... set_robust_list resumed>) = 0 [pid 3877] <... futex resumed>) = 0 [pid 3879] umount2("./file0", MNT_DETACH [pid 3877] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3879] <... umount2 resumed>) = 0 [pid 3879] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3877] <... futex resumed>) = 0 [pid 3878] umount2("./file0", MNT_DETACH [pid 3879] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3878] <... umount2 resumed>) = 0 [pid 3878] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3878] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3877] exit_group(0) = ? [pid 3879] <... futex resumed>) = ? [pid 3879] +++ exited with 0 +++ [pid 3878] <... futex resumed>) = ? [pid 3878] +++ exited with 0 +++ [pid 3877] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3877, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3880 ./strace-static-x86_64: Process 3880 attached [pid 3880] set_robust_list(0x5555564465e0, 24) = 0 [pid 3880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3880] setpgid(0, 0) = 0 [pid 3880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3880] write(3, "1000", 4) = 4 [pid 3880] close(3) = 0 [pid 3880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3880] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3880] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3881], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3881 [pid 3880] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3881 attached [pid 3881] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3881] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3881] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3880] <... futex resumed>) = 0 [pid 3880] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3881] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3881] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3880] <... futex resumed>) = 0 [pid 3880] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3881] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3881] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3880] <... futex resumed>) = 0 [pid 3880] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3880] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3880] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3882], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3882 [pid 3880] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3880] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3881] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3882 attached [pid 3882] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3882] umount2("./file0", MNT_DETACH [pid 3881] <... umount2 resumed>) = 0 [pid 3881] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3881] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3882] <... umount2 resumed>) = 0 [pid 3882] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3880] <... futex resumed>) = 0 [pid 3880] exit_group(0) = ? [pid 3881] <... futex resumed>) = ? [pid 3881] +++ exited with 0 +++ [pid 3882] <... futex resumed>) = ? [pid 3882] +++ exited with 0 +++ [pid 3880] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3880, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3883 attached , child_tidptr=0x5555564465d0) = 3883 [pid 3883] set_robust_list(0x5555564465e0, 24) = 0 [pid 3883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3883] setpgid(0, 0) = 0 [pid 3883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3883] write(3, "1000", 4) = 4 [pid 3883] close(3) = 0 [pid 3883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3883] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3883] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3883] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3884 attached , parent_tid=[3884], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3884 [pid 3884] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3884] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3883] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3884] <... futex resumed>) = 0 [pid 3883] <... futex resumed>) = 1 [pid 3884] mkdir("./file0", 000 [pid 3883] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3884] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3884] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3884] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3883] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3884] <... futex resumed>) = 0 [pid 3884] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3883] <... futex resumed>) = 1 [pid 3883] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3884] <... mount resumed>) = 0 [pid 3884] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3883] <... futex resumed>) = 0 [pid 3883] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3883] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3884] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3884] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3883] <... futex resumed>) = 0 [pid 3884] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3883] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3883] <... futex resumed>) = 0 [pid 3884] umount2("./file0", MNT_DETACH [pid 3883] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3884] <... umount2 resumed>) = 0 [pid 3883] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3884] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3883] <... mmap resumed>) = 0x7fc84e05e000 [pid 3884] <... futex resumed>) = 0 [pid 3883] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3884] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3883] <... mprotect resumed>) = 0 [pid 3883] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3885 attached , parent_tid=[3885], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3885 [pid 3883] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3883] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3885] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3885] umount2("./file0", MNT_DETACH) = 0 [pid 3885] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3883] <... futex resumed>) = 0 [pid 3885] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3883] exit_group(0 [pid 3884] <... futex resumed>) = ? [pid 3885] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 3883] <... exit_group resumed>) = ? [pid 3884] +++ exited with 0 +++ [pid 3885] +++ exited with 0 +++ [pid 3883] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3883, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3886 ./strace-static-x86_64: Process 3886 attached [pid 3886] set_robust_list(0x5555564465e0, 24) = 0 [pid 3886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3886] setpgid(0, 0) = 0 [pid 3886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3886] write(3, "1000", 4) = 4 [pid 3886] close(3) = 0 [pid 3886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3886] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3886] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3887 attached , parent_tid=[3887], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3887 [pid 3887] set_robust_list(0x7fc84e09f9e0, 24 [pid 3886] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3887] <... set_robust_list resumed>) = 0 [pid 3887] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3887] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3887] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3886] <... futex resumed>) = 1 [pid 3886] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3887] <... futex resumed>) = 0 [pid 3887] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3886] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3886] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3887] <... futex resumed>) = 0 [pid 3886] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3887] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3887] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3887] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3886] <... futex resumed>) = 0 [pid 3886] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3887] <... futex resumed>) = 0 [pid 3887] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3886] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3887] <... mount resumed>) = 0 [pid 3887] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3886] <... futex resumed>) = 0 [pid 3886] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3886] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3887] umount2("./file0", MNT_DETACH [pid 3886] <... futex resumed>) = 0 [pid 3886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3887] <... umount2 resumed>) = 0 [pid 3886] <... mmap resumed>) = 0x7fc84e05e000 [pid 3886] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3887] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3886] <... mprotect resumed>) = 0 [pid 3886] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3887] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3888 attached [pid 3888] set_robust_list(0x7fc84e07e9e0, 24 [pid 3886] <... clone resumed>, parent_tid=[3888], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3888 [pid 3888] <... set_robust_list resumed>) = 0 [pid 3886] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3888] umount2("./file0", MNT_DETACH [pid 3886] <... futex resumed>) = 0 [pid 3886] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3888] <... umount2 resumed>) = 0 [pid 3888] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3886] <... futex resumed>) = 0 [pid 3888] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3886] exit_group(0) = ? [pid 3887] <... futex resumed>) = ? [pid 3888] <... futex resumed>) = ? [pid 3888] +++ exited with 0 +++ [pid 3887] +++ exited with 0 +++ [pid 3886] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3886, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3889 ./strace-static-x86_64: Process 3889 attached [pid 3889] set_robust_list(0x5555564465e0, 24) = 0 [pid 3889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3889] setpgid(0, 0) = 0 [pid 3889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3889] write(3, "1000", 4) = 4 [pid 3889] close(3) = 0 [pid 3889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3889] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3889] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3889] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3890 attached , parent_tid=[3890], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3890 [pid 3890] set_robust_list(0x7fc84e09f9e0, 24 [pid 3889] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3890] <... set_robust_list resumed>) = 0 [pid 3889] <... futex resumed>) = 0 [pid 3889] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3890] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3890] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3889] <... futex resumed>) = 0 [pid 3890] <... futex resumed>) = 1 [pid 3889] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3890] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3889] <... futex resumed>) = 0 [pid 3889] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3890] <... mount resumed>) = 0 [pid 3890] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3889] <... futex resumed>) = 0 [pid 3890] <... futex resumed>) = 1 [pid 3889] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3890] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3889] <... futex resumed>) = 0 [pid 3889] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3890] <... mount resumed>) = 0 [pid 3890] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3889] <... futex resumed>) = 0 [pid 3890] <... futex resumed>) = 1 [pid 3889] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3890] umount2("./file0", MNT_DETACH [pid 3889] <... futex resumed>) = 0 [pid 3889] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3889] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3889] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3889] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3891 attached [pid 3890] <... umount2 resumed>) = 0 [pid 3889] <... clone resumed>, parent_tid=[3891], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3891 [pid 3891] set_robust_list(0x7fc84e07e9e0, 24 [pid 3890] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3889] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3891] <... set_robust_list resumed>) = 0 [pid 3890] <... futex resumed>) = 0 [pid 3891] umount2("./file0", MNT_DETACH [pid 3889] <... futex resumed>) = 0 [pid 3890] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3889] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3891] <... umount2 resumed>) = 0 [pid 3891] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3889] <... futex resumed>) = 0 [pid 3891] <... futex resumed>) = 1 [pid 3889] exit_group(0 [pid 3891] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3889] <... exit_group resumed>) = ? [pid 3890] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3891] <... futex resumed>) = ? [pid 3890] +++ exited with 0 +++ [pid 3891] +++ exited with 0 +++ [pid 3889] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3889, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3892 attached , child_tidptr=0x5555564465d0) = 3892 [pid 3892] set_robust_list(0x5555564465e0, 24) = 0 [pid 3892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3892] setpgid(0, 0) = 0 [pid 3892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3892] write(3, "1000", 4) = 4 [pid 3892] close(3) = 0 [pid 3892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3892] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3892] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3893 attached [pid 3893] set_robust_list(0x7fc84e09f9e0, 24 [pid 3892] <... clone resumed>, parent_tid=[3893], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3893 [pid 3893] <... set_robust_list resumed>) = 0 [pid 3892] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3893] mkdir("./file0", 000 [pid 3892] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3893] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3893] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3892] <... futex resumed>) = 0 [pid 3892] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3893] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3892] <... futex resumed>) = 0 [pid 3892] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3893] <... mount resumed>) = 0 [pid 3893] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3892] <... futex resumed>) = 0 [pid 3893] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3892] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3892] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3893] <... mount resumed>) = 0 [pid 3893] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3892] <... futex resumed>) = 0 [pid 3892] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3893] umount2("./file0", MNT_DETACH [pid 3892] <... futex resumed>) = 0 [pid 3892] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3892] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3893] <... umount2 resumed>) = 0 [pid 3892] <... mprotect resumed>) = 0 [pid 3893] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3892] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3893] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3894 attached [pid 3892] <... clone resumed>, parent_tid=[3894], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3894 [pid 3892] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3894] set_robust_list(0x7fc84e07e9e0, 24 [pid 3892] <... futex resumed>) = 0 [pid 3894] <... set_robust_list resumed>) = 0 [pid 3892] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3894] umount2("./file0", MNT_DETACH [pid 3893] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3894] <... umount2 resumed>) = 0 [pid 3894] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3894] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3892] <... futex resumed>) = 0 [pid 3892] exit_group(0) = ? [pid 3894] <... futex resumed>) = ? [pid 3894] +++ exited with 0 +++ [pid 3893] <... futex resumed>) = ? [pid 3893] +++ exited with 0 +++ [pid 3892] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3892, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3895 ./strace-static-x86_64: Process 3895 attached [pid 3895] set_robust_list(0x5555564465e0, 24) = 0 [pid 3895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3895] setpgid(0, 0) = 0 [pid 3895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3895] write(3, "1000", 4) = 4 [pid 3895] close(3) = 0 [pid 3895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3895] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3895] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3895] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3896], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3896 ./strace-static-x86_64: Process 3896 attached [pid 3896] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3896] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3895] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3896] <... futex resumed>) = 0 [pid 3895] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3896] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3896] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3896] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3895] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3895] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3896] <... futex resumed>) = 0 [pid 3896] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3895] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3896] <... mount resumed>) = 0 [pid 3896] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3896] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3895] <... futex resumed>) = 0 [pid 3895] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3896] <... futex resumed>) = 0 [pid 3896] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3895] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3896] <... mount resumed>) = 0 [pid 3896] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3896] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3895] <... futex resumed>) = 0 [pid 3895] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3896] <... futex resumed>) = 0 [pid 3896] umount2("./file0", MNT_DETACH [pid 3895] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3896] <... umount2 resumed>) = 0 [pid 3895] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3896] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3896] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3895] <... mmap resumed>) = 0x7fc84e05e000 [pid 3895] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3895] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3897 attached , parent_tid=[3897], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3897 [pid 3897] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3897] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3895] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3897] <... futex resumed>) = 0 [pid 3895] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3897] umount2("./file0", MNT_DETACH) = 0 [pid 3897] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3895] <... futex resumed>) = 0 [pid 3895] exit_group(0) = ? [pid 3896] <... futex resumed>) = ? [pid 3896] +++ exited with 0 +++ [pid 3897] +++ exited with 0 +++ [pid 3895] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3895, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3898 attached , child_tidptr=0x5555564465d0) = 3898 [pid 3898] set_robust_list(0x5555564465e0, 24) = 0 [pid 3898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3898] setpgid(0, 0) = 0 [pid 3898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3898] write(3, "1000", 4) = 4 [pid 3898] close(3) = 0 [pid 3898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3898] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3898] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3899 attached , parent_tid=[3899], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3899 [pid 3899] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3899] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3898] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3899] <... futex resumed>) = 0 [pid 3899] mkdir("./file0", 000 [pid 3898] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3899] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3899] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3899] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3898] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3899] <... futex resumed>) = 0 [pid 3899] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3898] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3899] <... mount resumed>) = 0 [pid 3899] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3898] <... futex resumed>) = 0 [pid 3898] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3898] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3899] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3899] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3898] <... futex resumed>) = 0 [pid 3898] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3899] umount2("./file0", MNT_DETACH [pid 3898] <... futex resumed>) = 0 [pid 3898] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3898] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3898] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3900], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3900 [pid 3899] <... umount2 resumed>) = 0 [pid 3898] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3898] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3900 attached [pid 3900] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3900] umount2("./file0", MNT_DETACH [pid 3899] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3900] <... umount2 resumed>) = 0 [pid 3900] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3898] <... futex resumed>) = 0 [pid 3898] exit_group(0) = ? [pid 3900] <... futex resumed>) = ? [pid 3900] +++ exited with 0 +++ [pid 3899] +++ exited with 0 +++ [pid 3898] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3898, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3901 ./strace-static-x86_64: Process 3901 attached [pid 3901] set_robust_list(0x5555564465e0, 24) = 0 [pid 3901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3901] setpgid(0, 0) = 0 [pid 3901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3901] write(3, "1000", 4) = 4 [pid 3901] close(3) = 0 [pid 3901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3901] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3901] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3902], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3902 [pid 3901] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3902 attached [pid 3902] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3902] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3902] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3901] <... futex resumed>) = 0 [pid 3901] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3902] <... futex resumed>) = 1 [pid 3902] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3902] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3901] <... futex resumed>) = 0 [pid 3901] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3902] <... futex resumed>) = 1 [pid 3902] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3902] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3901] <... futex resumed>) = 0 [pid 3901] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3901] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3901] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3903], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3903 [pid 3901] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3901] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3902] <... futex resumed>) = 1 [pid 3902] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 3903 attached [pid 3903] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3903] umount2("./file0", MNT_DETACH [pid 3902] <... umount2 resumed>) = 0 [pid 3902] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3902] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3903] <... umount2 resumed>) = 0 [pid 3903] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3901] <... futex resumed>) = 0 [pid 3901] exit_group(0 [pid 3903] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3901] <... exit_group resumed>) = ? [pid 3902] <... futex resumed>) = ? [pid 3902] +++ exited with 0 +++ [pid 3903] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3903] +++ exited with 0 +++ [pid 3901] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3901, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3904 ./strace-static-x86_64: Process 3904 attached [pid 3904] set_robust_list(0x5555564465e0, 24) = 0 [pid 3904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3904] setpgid(0, 0) = 0 [pid 3904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3904] write(3, "1000", 4) = 4 [pid 3904] close(3) = 0 [pid 3904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3904] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3904] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3905 attached , parent_tid=[3905], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3905 [pid 3905] set_robust_list(0x7fc84e09f9e0, 24 [pid 3904] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3905] <... set_robust_list resumed>) = 0 [pid 3905] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3905] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3905] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3904] <... futex resumed>) = 1 [pid 3905] <... futex resumed>) = 0 [pid 3905] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3904] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3904] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3905] <... futex resumed>) = 0 [pid 3905] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3904] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3905] <... mount resumed>) = 0 [pid 3905] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3905] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3904] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3904] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3905] <... futex resumed>) = 0 [pid 3905] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3905] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3904] <... futex resumed>) = 0 [pid 3905] umount2("./file0", MNT_DETACH [pid 3904] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3904] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3904] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3905] <... umount2 resumed>) = 0 [pid 3904] <... mprotect resumed>) = 0 [pid 3905] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3904] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3905] <... futex resumed>) = 0 [pid 3905] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3906 attached [pid 3904] <... clone resumed>, parent_tid=[3906], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3906 [pid 3906] set_robust_list(0x7fc84e07e9e0, 24 [pid 3904] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3906] <... set_robust_list resumed>) = 0 [pid 3904] <... futex resumed>) = 0 [pid 3906] umount2("./file0", MNT_DETACH [pid 3904] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3906] <... umount2 resumed>) = 0 [pid 3906] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3904] <... futex resumed>) = 0 [pid 3906] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3904] exit_group(0) = ? [pid 3905] <... futex resumed>) = ? [pid 3905] +++ exited with 0 +++ [pid 3906] <... futex resumed>) = ? [pid 3906] +++ exited with 0 +++ [pid 3904] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3904, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3907 ./strace-static-x86_64: Process 3907 attached [pid 3907] set_robust_list(0x5555564465e0, 24) = 0 [pid 3907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3907] setpgid(0, 0) = 0 [pid 3907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3907] write(3, "1000", 4) = 4 [pid 3907] close(3) = 0 [pid 3907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3907] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3907] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3907] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3908 attached , parent_tid=[3908], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3908 [pid 3908] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3908] <... futex resumed>) = 0 [pid 3908] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3907] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3908] <... futex resumed>) = 0 [pid 3908] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3907] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3908] <... mount resumed>) = 0 [pid 3908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3907] <... futex resumed>) = 0 [pid 3907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3908] <... futex resumed>) = 0 [pid 3908] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3907] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3908] <... mount resumed>) = 0 [pid 3908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3907] <... futex resumed>) = 0 [pid 3907] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3908] <... futex resumed>) = 0 [pid 3908] umount2("./file0", MNT_DETACH [pid 3907] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3908] <... umount2 resumed>) = 0 [pid 3908] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3908] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3907] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3907] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3907] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3909 attached , parent_tid=[3909], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3909 [pid 3909] set_robust_list(0x7fc84e07e9e0, 24 [pid 3907] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3909] <... set_robust_list resumed>) = 0 [pid 3907] <... futex resumed>) = 0 [pid 3909] umount2("./file0", MNT_DETACH [pid 3907] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3909] <... umount2 resumed>) = 0 [pid 3909] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3907] <... futex resumed>) = 0 [pid 3909] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3907] exit_group(0) = ? [pid 3908] <... futex resumed>) = ? [pid 3909] <... futex resumed>) = ? [pid 3908] +++ exited with 0 +++ [pid 3909] +++ exited with 0 +++ [pid 3907] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3907, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3910 ./strace-static-x86_64: Process 3910 attached [pid 3910] set_robust_list(0x5555564465e0, 24) = 0 [pid 3910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3910] setpgid(0, 0) = 0 [pid 3910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3910] write(3, "1000", 4) = 4 [pid 3910] close(3) = 0 [pid 3910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3910] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3910] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3911 attached , parent_tid=[3911], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3911 [pid 3911] set_robust_list(0x7fc84e09f9e0, 24 [pid 3910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3911] <... set_robust_list resumed>) = 0 [pid 3910] <... futex resumed>) = 0 [pid 3910] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3911] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3910] <... futex resumed>) = 0 [pid 3911] <... futex resumed>) = 1 [pid 3910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3911] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3910] <... futex resumed>) = 0 [pid 3910] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3911] <... mount resumed>) = 0 [pid 3911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3910] <... futex resumed>) = 0 [pid 3910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3910] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3911] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3910] <... futex resumed>) = 0 [pid 3910] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3910] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3911] umount2("./file0", MNT_DETACH [pid 3910] <... mmap resumed>) = 0x7fc84e05e000 [pid 3910] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3910] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3911] <... umount2 resumed>) = 0 [pid 3910] <... clone resumed>, parent_tid=[3912], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3912 [pid 3910] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3911] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3910] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3911] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3912 attached [pid 3912] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3912] umount2("./file0", MNT_DETACH [pid 3911] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3912] <... umount2 resumed>) = 0 [pid 3912] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3910] <... futex resumed>) = 0 [pid 3910] exit_group(0) = ? [pid 3912] <... futex resumed>) = ? [pid 3911] <... futex resumed>) = ? [pid 3912] +++ exited with 0 +++ [pid 3911] +++ exited with 0 +++ [pid 3910] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3910, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3913 ./strace-static-x86_64: Process 3913 attached [pid 3913] set_robust_list(0x5555564465e0, 24) = 0 [pid 3913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3913] setpgid(0, 0) = 0 [pid 3913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3913] write(3, "1000", 4) = 4 [pid 3913] close(3) = 0 [pid 3913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3913] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3913] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3913] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3914 attached [pid 3914] set_robust_list(0x7fc84e09f9e0, 24 [pid 3913] <... clone resumed>, parent_tid=[3914], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3914 [pid 3914] <... set_robust_list resumed>) = 0 [pid 3914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3914] <... futex resumed>) = 0 [pid 3913] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3914] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3913] <... futex resumed>) = 0 [pid 3913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3914] <... futex resumed>) = 0 [pid 3914] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3913] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3913] <... futex resumed>) = 0 [pid 3914] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3913] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3914] <... mount resumed>) = 0 [pid 3914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3913] <... futex resumed>) = 0 [pid 3913] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3913] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3913] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3913] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3914] umount2("./file0", MNT_DETACH [pid 3913] <... mprotect resumed>) = 0 [pid 3913] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3914] <... umount2 resumed>) = 0 [pid 3913] <... clone resumed>, parent_tid=[3915], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3915 [pid 3914] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3913] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3914] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3913] <... futex resumed>) = 0 [pid 3913] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3915 attached [pid 3915] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3915] umount2("./file0", MNT_DETACH) = 0 [pid 3915] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3913] <... futex resumed>) = 0 [pid 3913] exit_group(0 [pid 3914] <... futex resumed>) = ? [pid 3913] <... exit_group resumed>) = ? [pid 3914] +++ exited with 0 +++ [pid 3915] <... futex resumed>) = ? [pid 3915] +++ exited with 0 +++ [pid 3913] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3913, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3916 ./strace-static-x86_64: Process 3916 attached [pid 3916] set_robust_list(0x5555564465e0, 24) = 0 [pid 3916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3916] setpgid(0, 0) = 0 [pid 3916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3916] write(3, "1000", 4) = 4 [pid 3916] close(3) = 0 [pid 3916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3916] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3916] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3917 attached , parent_tid=[3917], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3917 [pid 3917] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3917] <... futex resumed>) = 0 [pid 3917] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3916] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3916] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3917] <... futex resumed>) = 0 [pid 3917] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3916] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3917] <... mount resumed>) = 0 [pid 3917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3916] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3917] <... futex resumed>) = 0 [pid 3917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3917] <... futex resumed>) = 0 [pid 3916] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3917] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3916] <... futex resumed>) = 0 [pid 3916] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3917] <... futex resumed>) = 0 [pid 3916] <... futex resumed>) = 1 [pid 3916] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3917] umount2("./file0", MNT_DETACH [pid 3916] <... futex resumed>) = 0 [pid 3916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3917] <... umount2 resumed>) = 0 [pid 3916] <... mmap resumed>) = 0x7fc84e05e000 [pid 3917] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3916] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3917] <... futex resumed>) = 0 [pid 3917] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3916] <... mprotect resumed>) = 0 [pid 3916] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3918 attached , parent_tid=[3918], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3918 [pid 3918] set_robust_list(0x7fc84e07e9e0, 24 [pid 3916] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3918] <... set_robust_list resumed>) = 0 [pid 3918] umount2("./file0", MNT_DETACH [pid 3916] <... futex resumed>) = 0 [pid 3916] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3918] <... umount2 resumed>) = 0 [pid 3918] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3916] <... futex resumed>) = 0 [pid 3918] <... futex resumed>) = 1 [pid 3916] exit_group(0 [pid 3918] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3916] <... exit_group resumed>) = ? [pid 3917] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3918] <... futex resumed>) = ? [pid 3917] +++ exited with 0 +++ [pid 3918] +++ exited with 0 +++ [pid 3916] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3916, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3919 ./strace-static-x86_64: Process 3919 attached [pid 3919] set_robust_list(0x5555564465e0, 24) = 0 [pid 3919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3919] setpgid(0, 0) = 0 [pid 3919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3919] write(3, "1000", 4) = 4 [pid 3919] close(3) = 0 [pid 3919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3919] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3919] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3919] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3920 attached , parent_tid=[3920], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3920 [pid 3920] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3920] <... futex resumed>) = 0 [pid 3920] mkdir("./file0", 000 [pid 3919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3920] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3920] <... futex resumed>) = 0 [pid 3920] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3920] <... mount resumed>) = 0 [pid 3920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3920] <... futex resumed>) = 0 [pid 3920] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3919] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3920] <... mount resumed>) = 0 [pid 3920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3919] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3920] <... futex resumed>) = 0 [pid 3920] umount2("./file0", MNT_DETACH [pid 3919] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3920] <... umount2 resumed>) = 0 [pid 3920] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3920] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] <... futex resumed>) = 0 [pid 3919] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3919] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3919] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3921 attached , parent_tid=[3921], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3921 [pid 3921] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3921] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3921] <... futex resumed>) = 0 [pid 3921] umount2("./file0", MNT_DETACH) = 0 [pid 3921] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3921] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3919] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3919] exit_group(0 [pid 3920] <... futex resumed>) = ? [pid 3919] <... exit_group resumed>) = ? [pid 3920] +++ exited with 0 +++ [pid 3921] <... futex resumed>) = ? [pid 3921] +++ exited with 0 +++ [pid 3919] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3919, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3922 ./strace-static-x86_64: Process 3922 attached [pid 3922] set_robust_list(0x5555564465e0, 24) = 0 [pid 3922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3922] setpgid(0, 0) = 0 [pid 3922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3922] write(3, "1000", 4) = 4 [pid 3922] close(3) = 0 [pid 3922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3922] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3922] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3923 attached [pid 3923] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3923] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3922] <... clone resumed>, parent_tid=[3923], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3923 [pid 3922] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3923] <... futex resumed>) = 0 [pid 3923] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3923] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3923] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3922] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3922] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3923] <... futex resumed>) = 0 [pid 3923] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3922] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3923] <... mount resumed>) = 0 [pid 3923] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3923] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3922] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3923] <... futex resumed>) = 0 [pid 3923] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3922] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3923] <... mount resumed>) = 0 [pid 3923] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3923] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3922] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3923] <... futex resumed>) = 0 [pid 3923] umount2("./file0", MNT_DETACH) = 0 [pid 3923] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3923] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3922] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3923] <... futex resumed>) = 0 [pid 3923] umount2("./file0", MNT_DETACH) = 0 [pid 3922] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3923] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3923] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3922] exit_group(0) = ? [pid 3923] <... futex resumed>) = ? [pid 3923] +++ exited with 0 +++ [pid 3922] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3922, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3924 ./strace-static-x86_64: Process 3924 attached [pid 3924] set_robust_list(0x5555564465e0, 24) = 0 [pid 3924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3924] setpgid(0, 0) = 0 [pid 3924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3924] write(3, "1000", 4) = 4 [pid 3924] close(3) = 0 [pid 3924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3924] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3924] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3925 attached , parent_tid=[3925], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3925 [pid 3925] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3925] <... futex resumed>) = 0 [pid 3925] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3925] <... futex resumed>) = 0 [pid 3925] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3925] <... mount resumed>) = 0 [pid 3925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3924] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3925] <... futex resumed>) = 0 [pid 3924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3925] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3924] <... futex resumed>) = 0 [pid 3924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3925] <... futex resumed>) = 0 [pid 3925] umount2("./file0", MNT_DETACH [pid 3924] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3925] <... umount2 resumed>) = 0 [pid 3924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3924] <... mmap resumed>) = 0x7fc84e05e000 [pid 3924] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3924] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3926 attached , parent_tid=[3926], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3926 [pid 3926] set_robust_list(0x7fc84e07e9e0, 24 [pid 3924] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3926] <... set_robust_list resumed>) = 0 [pid 3924] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3926] umount2("./file0", MNT_DETACH) = 0 [pid 3926] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3924] <... futex resumed>) = 0 [pid 3926] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3924] exit_group(0) = ? [pid 3925] <... futex resumed>) = ? [pid 3925] +++ exited with 0 +++ [pid 3926] <... futex resumed>) = ? [pid 3926] +++ exited with 0 +++ [pid 3924] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3927 ./strace-static-x86_64: Process 3927 attached [pid 3927] set_robust_list(0x5555564465e0, 24) = 0 [pid 3927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3927] setpgid(0, 0) = 0 [pid 3927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3927] write(3, "1000", 4) = 4 [pid 3927] close(3) = 0 [pid 3927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3927] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3927] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3928 attached [pid 3928] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3927] <... clone resumed>, parent_tid=[3928], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3928 [pid 3927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3928] <... futex resumed>) = 0 [pid 3928] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3928] <... futex resumed>) = 0 [pid 3927] <... futex resumed>) = 1 [pid 3928] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3928] <... mount resumed>) = 0 [pid 3928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3927] <... futex resumed>) = 0 [pid 3927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3928] <... futex resumed>) = 0 [pid 3927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3928] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3927] <... futex resumed>) = 0 [pid 3927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3928] <... futex resumed>) = 0 [pid 3928] umount2("./file0", MNT_DETACH [pid 3927] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3928] <... umount2 resumed>) = 0 [pid 3927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3927] <... mmap resumed>) = 0x7fc84e05e000 [pid 3927] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3927] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3929 attached , parent_tid=[3929], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3929 [pid 3929] set_robust_list(0x7fc84e07e9e0, 24 [pid 3927] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3929] <... set_robust_list resumed>) = 0 [pid 3927] <... futex resumed>) = 0 [pid 3929] umount2("./file0", MNT_DETACH [pid 3927] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3929] <... umount2 resumed>) = 0 [pid 3929] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3927] <... futex resumed>) = 0 [pid 3929] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3927] exit_group(0 [pid 3929] <... futex resumed>) = ? [pid 3928] <... futex resumed>) = ? [pid 3927] <... exit_group resumed>) = ? [pid 3928] +++ exited with 0 +++ [pid 3929] +++ exited with 0 +++ [pid 3927] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3930 ./strace-static-x86_64: Process 3930 attached [pid 3930] set_robust_list(0x5555564465e0, 24) = 0 [pid 3930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3930] setpgid(0, 0) = 0 [pid 3930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3930] write(3, "1000", 4) = 4 [pid 3930] close(3) = 0 [pid 3930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3930] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3930] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3931], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3931 [pid 3930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3931 attached [pid 3931] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3931] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3930] <... futex resumed>) = 0 [pid 3930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3931] <... futex resumed>) = 1 [pid 3931] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3930] <... futex resumed>) = 0 [pid 3930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3931] <... futex resumed>) = 1 [pid 3931] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3930] <... futex resumed>) = 0 [pid 3931] <... futex resumed>) = 1 [pid 3930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3931] umount2("./file0", MNT_DETACH [pid 3930] <... futex resumed>) = 0 [pid 3930] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3930] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3931] <... umount2 resumed>) = 0 [pid 3930] <... mprotect resumed>) = 0 [pid 3931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3930] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3931] <... futex resumed>) = 0 [pid 3931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3932 attached [pid 3930] <... clone resumed>, parent_tid=[3932], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3932 [pid 3932] set_robust_list(0x7fc84e07e9e0, 24 [pid 3930] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3932] <... set_robust_list resumed>) = 0 [pid 3930] <... futex resumed>) = 0 [pid 3932] umount2("./file0", MNT_DETACH [pid 3930] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3932] <... umount2 resumed>) = 0 [pid 3932] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3930] <... futex resumed>) = 0 [pid 3932] <... futex resumed>) = 1 [pid 3930] exit_group(0 [pid 3932] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3931] <... futex resumed>) = ? [pid 3932] <... futex resumed>) = ? [pid 3930] <... exit_group resumed>) = ? [pid 3931] +++ exited with 0 +++ [pid 3932] +++ exited with 0 +++ [pid 3930] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3930, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3933 ./strace-static-x86_64: Process 3933 attached [pid 3933] set_robust_list(0x5555564465e0, 24) = 0 [pid 3933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3933] setpgid(0, 0) = 0 [pid 3933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3933] write(3, "1000", 4) = 4 [pid 3933] close(3) = 0 [pid 3933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3933] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3933] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3933] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3934], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3934 [pid 3933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3934 attached [pid 3934] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3934] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3933] <... futex resumed>) = 0 [pid 3933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3934] <... futex resumed>) = 1 [pid 3934] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3933] <... futex resumed>) = 0 [pid 3934] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3934] <... mount resumed>) = 0 [pid 3934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3933] <... futex resumed>) = 0 [pid 3933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3933] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3933] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3933] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3933] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3935], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3935 [pid 3934] umount2("./file0", MNT_DETACH [pid 3933] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3935 attached ) = 0 [pid 3935] set_robust_list(0x7fc84e07e9e0, 24 [pid 3933] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3935] <... set_robust_list resumed>) = 0 [pid 3935] umount2("./file0", MNT_DETACH [pid 3934] <... umount2 resumed>) = 0 [pid 3934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3935] <... umount2 resumed>) = 0 [pid 3934] <... futex resumed>) = 0 [pid 3935] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3933] <... futex resumed>) = 0 [pid 3935] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3933] exit_group(0) = ? [pid 3935] <... futex resumed>) = ? [pid 3935] +++ exited with 0 +++ [pid 3934] +++ exited with 0 +++ [pid 3933] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3933, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3936 ./strace-static-x86_64: Process 3936 attached [pid 3936] set_robust_list(0x5555564465e0, 24) = 0 [pid 3936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3936] setpgid(0, 0) = 0 [pid 3936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3936] write(3, "1000", 4) = 4 [pid 3936] close(3) = 0 [pid 3936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3936] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3936] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3937 attached , parent_tid=[3937], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3937 [pid 3937] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3937] <... futex resumed>) = 0 [pid 3937] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3937] <... futex resumed>) = 0 [pid 3937] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3937] <... futex resumed>) = 0 [pid 3937] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3937] <... mount resumed>) = 0 [pid 3937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3937] <... futex resumed>) = 0 [pid 3937] umount2("./file0", MNT_DETACH [pid 3936] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3937] <... umount2 resumed>) = 0 [pid 3937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3936] <... futex resumed>) = 0 [pid 3936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3936] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3936] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3938 attached [pid 3938] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3938] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3936] <... clone resumed>, parent_tid=[3938], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3938 [pid 3936] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3938] <... futex resumed>) = 0 [pid 3938] umount2("./file0", MNT_DETACH [pid 3936] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3938] <... umount2 resumed>) = 0 [pid 3938] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3936] <... futex resumed>) = 0 [pid 3936] exit_group(0) = ? [pid 3937] <... futex resumed>) = ? [pid 3937] +++ exited with 0 +++ [pid 3938] +++ exited with 0 +++ [pid 3936] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3936, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3939 attached , child_tidptr=0x5555564465d0) = 3939 [pid 3939] set_robust_list(0x5555564465e0, 24) = 0 [pid 3939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3939] setpgid(0, 0) = 0 [pid 3939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3939] write(3, "1000", 4) = 4 [pid 3939] close(3) = 0 [pid 3939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3939] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3939] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3939] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3940 attached [pid 3940] set_robust_list(0x7fc84e09f9e0, 24 [pid 3939] <... clone resumed>, parent_tid=[3940], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3940 [pid 3940] <... set_robust_list resumed>) = 0 [pid 3940] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3940] <... futex resumed>) = 0 [pid 3940] mkdir("./file0", 000 [pid 3939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3940] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3939] <... futex resumed>) = 0 [pid 3939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3940] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3939] <... futex resumed>) = 0 [pid 3940] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3940] <... mount resumed>) = 0 [pid 3940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3939] <... futex resumed>) = 0 [pid 3940] umount2("./file0", MNT_DETACH [pid 3939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3939] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3939] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3940] <... umount2 resumed>) = 0 [pid 3939] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3939] <... mprotect resumed>) = 0 [pid 3940] <... futex resumed>) = 0 [pid 3939] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3940] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3941 attached [pid 3941] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3941] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3939] <... clone resumed>, parent_tid=[3941], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3941 [pid 3939] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3941] <... futex resumed>) = 0 [pid 3941] umount2("./file0", MNT_DETACH [pid 3939] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3941] <... umount2 resumed>) = 0 [pid 3941] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3941] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3939] exit_group(0) = ? [pid 3940] <... futex resumed>) = ? [pid 3940] +++ exited with 0 +++ [pid 3941] <... futex resumed>) = ? [pid 3941] +++ exited with 0 +++ [pid 3939] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3939, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3942 ./strace-static-x86_64: Process 3942 attached [pid 3942] set_robust_list(0x5555564465e0, 24) = 0 [pid 3942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3942] setpgid(0, 0) = 0 [pid 3942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3942] write(3, "1000", 4) = 4 [pid 3942] close(3) = 0 [pid 3942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3942] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3942] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3943 attached , parent_tid=[3943], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3943 [pid 3943] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3943] <... futex resumed>) = 0 [pid 3943] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3942] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3943] <... futex resumed>) = 0 [pid 3943] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3943] <... mount resumed>) = 0 [pid 3943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3942] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3943] <... futex resumed>) = 0 [pid 3943] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3942] <... futex resumed>) = 0 [pid 3943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3943] umount2("./file0", MNT_DETACH [pid 3942] <... futex resumed>) = 0 [pid 3942] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3943] <... umount2 resumed>) = 0 [pid 3942] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3942] <... mprotect resumed>) = 0 [pid 3943] <... futex resumed>) = 0 [pid 3942] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3944 attached [pid 3942] <... clone resumed>, parent_tid=[3944], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3944 [pid 3944] set_robust_list(0x7fc84e07e9e0, 24 [pid 3942] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3944] <... set_robust_list resumed>) = 0 [pid 3942] <... futex resumed>) = 0 [pid 3944] umount2("./file0", MNT_DETACH [pid 3942] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3944] <... umount2 resumed>) = 0 [pid 3944] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3942] <... futex resumed>) = 0 [pid 3942] exit_group(0 [pid 3944] <... futex resumed>) = 1 [pid 3943] <... futex resumed>) = ? [pid 3942] <... exit_group resumed>) = ? [pid 3943] +++ exited with 0 +++ [pid 3944] +++ exited with 0 +++ [pid 3942] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3942, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3945 ./strace-static-x86_64: Process 3945 attached [pid 3945] set_robust_list(0x5555564465e0, 24) = 0 [pid 3945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3945] setpgid(0, 0) = 0 [pid 3945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3945] write(3, "1000", 4) = 4 [pid 3945] close(3) = 0 [pid 3945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3945] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3945] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3946 attached , parent_tid=[3946], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3946 [pid 3945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3946] set_robust_list(0x7fc84e09f9e0, 24 [pid 3945] <... futex resumed>) = 0 [pid 3946] <... set_robust_list resumed>) = 0 [pid 3946] mkdir("./file0", 000 [pid 3945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3946] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3946] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3946] <... futex resumed>) = 0 [pid 3945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3946] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3945] <... futex resumed>) = 0 [pid 3946] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3945] <... futex resumed>) = 0 [pid 3946] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3946] <... mount resumed>) = 0 [pid 3946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3945] <... futex resumed>) = 0 [pid 3945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3945] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3946] umount2("./file0", MNT_DETACH [pid 3945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3945] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3945] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3946] <... umount2 resumed>) = 0 [pid 3946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3945] <... clone resumed>, parent_tid=[3947], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3947 [pid 3946] <... futex resumed>) = 0 [pid 3945] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3946] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3945] <... futex resumed>) = 0 [pid 3945] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3947 attached [pid 3947] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3947] umount2("./file0", MNT_DETACH) = 0 [pid 3947] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3945] <... futex resumed>) = 0 [pid 3945] exit_group(0) = ? [pid 3946] <... futex resumed>) = ? [pid 3946] +++ exited with 0 +++ [pid 3947] +++ exited with 0 +++ [pid 3945] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3945, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3948 attached , child_tidptr=0x5555564465d0) = 3948 [pid 3948] set_robust_list(0x5555564465e0, 24) = 0 [pid 3948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3948] setpgid(0, 0) = 0 [pid 3948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3948] write(3, "1000", 4) = 4 [pid 3948] close(3) = 0 [pid 3948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3948] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3948] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3950], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3950 [pid 3948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3950 attached [pid 3950] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3950] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3950] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3948] <... futex resumed>) = 0 [pid 3948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3950] <... futex resumed>) = 1 [pid 3950] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3950] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3948] <... futex resumed>) = 0 [pid 3950] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3948] <... futex resumed>) = 0 [pid 3950] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3950] <... mount resumed>) = 0 [pid 3950] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3948] <... futex resumed>) = 0 [pid 3950] umount2("./file0", MNT_DETACH [pid 3948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3948] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3948] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3948] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3951 attached [pid 3951] set_robust_list(0x7fc84e07e9e0, 24 [pid 3948] <... clone resumed>, parent_tid=[3951], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3951 [pid 3951] <... set_robust_list resumed>) = 0 [pid 3948] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3951] umount2("./file0", MNT_DETACH [pid 3948] <... futex resumed>) = 0 [pid 3948] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3951] <... umount2 resumed>) = 0 [pid 3951] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3948] <... futex resumed>) = 0 [pid 3951] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3950] <... umount2 resumed>) = 0 [pid 3950] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3950] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3948] exit_group(0) = ? [pid 3951] <... futex resumed>) = ? [pid 3951] +++ exited with 0 +++ [pid 3950] <... futex resumed>) = ? [pid 3950] +++ exited with 0 +++ [pid 3948] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3948, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3952 ./strace-static-x86_64: Process 3952 attached [pid 3952] set_robust_list(0x5555564465e0, 24) = 0 [pid 3952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3952] setpgid(0, 0) = 0 [pid 3952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3952] write(3, "1000", 4) = 4 [pid 3952] close(3) = 0 [pid 3952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3952] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3952] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3953 attached , parent_tid=[3953], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3953 [pid 3953] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3953] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3952] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3953] <... futex resumed>) = 0 [pid 3953] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3953] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3952] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3953] <... futex resumed>) = 0 [pid 3953] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3952] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3952] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3953] <... futex resumed>) = 0 [pid 3953] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3952] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3953] <... mount resumed>) = 0 [pid 3953] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3953] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3952] <... futex resumed>) = 0 [pid 3952] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3953] <... futex resumed>) = 0 [pid 3953] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3952] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3953] <... mount resumed>) = 0 [pid 3953] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3953] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3952] <... futex resumed>) = 0 [pid 3952] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3953] <... futex resumed>) = 0 [pid 3953] umount2("./file0", MNT_DETACH [pid 3952] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3953] <... umount2 resumed>) = 0 [pid 3953] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3953] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3952] <... mmap resumed>) = 0x7fc84e05e000 [pid 3952] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3952] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3954 attached [pid 3954] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3954] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3952] <... clone resumed>, parent_tid=[3954], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3954 [pid 3952] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3954] <... futex resumed>) = 0 [pid 3954] umount2("./file0", MNT_DETACH [pid 3952] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3954] <... umount2 resumed>) = 0 [pid 3954] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3952] <... futex resumed>) = 0 [pid 3954] <... futex resumed>) = 1 [pid 3952] exit_group(0 [pid 3954] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3953] <... futex resumed>) = ? [pid 3952] <... exit_group resumed>) = ? [pid 3953] +++ exited with 0 +++ [pid 3954] <... futex resumed>) = ? [pid 3954] +++ exited with 0 +++ [pid 3952] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3952, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3955 attached , child_tidptr=0x5555564465d0) = 3955 [pid 3955] set_robust_list(0x5555564465e0, 24) = 0 [pid 3955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3955] setpgid(0, 0) = 0 [pid 3955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3955] write(3, "1000", 4) = 4 [pid 3955] close(3) = 0 [pid 3955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3955] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3955] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3955] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3956 attached , parent_tid=[3956], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3956 [pid 3956] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3956] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3956] <... futex resumed>) = 0 [pid 3956] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3955] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3956] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3956] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3955] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3956] <... futex resumed>) = 0 [pid 3956] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3955] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3956] <... mount resumed>) = 0 [pid 3956] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3956] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] <... futex resumed>) = 0 [pid 3955] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3956] <... futex resumed>) = 0 [pid 3956] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3955] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3956] <... mount resumed>) = 0 [pid 3956] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3956] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] <... futex resumed>) = 0 [pid 3955] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3956] <... futex resumed>) = 0 [pid 3956] umount2("./file0", MNT_DETACH [pid 3955] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3955] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3956] <... umount2 resumed>) = 0 [pid 3956] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3956] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] <... mmap resumed>) = 0x7fc84e05e000 [pid 3955] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3955] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3957 attached , parent_tid=[3957], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3957 [pid 3957] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3957] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3957] <... futex resumed>) = 0 [pid 3957] umount2("./file0", MNT_DETACH [pid 3955] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3957] <... umount2 resumed>) = 0 [pid 3957] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3957] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3955] <... futex resumed>) = 0 [pid 3955] exit_group(0 [pid 3956] <... futex resumed>) = ? [pid 3955] <... exit_group resumed>) = ? [pid 3956] +++ exited with 0 +++ [pid 3957] <... futex resumed>) = ? [pid 3957] +++ exited with 0 +++ [pid 3955] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3955, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3958 ./strace-static-x86_64: Process 3958 attached [pid 3958] set_robust_list(0x5555564465e0, 24) = 0 [pid 3958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3958] setpgid(0, 0) = 0 [pid 3958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3958] write(3, "1000", 4) = 4 [pid 3958] close(3) = 0 [pid 3958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3958] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3958] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3959 attached , parent_tid=[3959], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3959 [pid 3959] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3958] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3959] mkdir("./file0", 000 [pid 3958] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3959] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3959] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3958] <... futex resumed>) = 0 [pid 3958] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3959] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3958] <... futex resumed>) = 0 [pid 3958] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3959] <... mount resumed>) = 0 [pid 3959] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3958] <... futex resumed>) = 0 [pid 3958] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3958] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3959] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3959] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3958] <... futex resumed>) = 0 [pid 3958] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3958] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3958] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3959] umount2("./file0", MNT_DETACH [pid 3958] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3960], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3960 [pid 3958] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3958] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3960 attached [pid 3960] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3960] umount2("./file0", MNT_DETACH) = 0 [pid 3960] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3958] <... futex resumed>) = 0 [pid 3960] <... futex resumed>) = 1 [pid 3960] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3959] <... umount2 resumed>) = 0 [pid 3959] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3959] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3958] exit_group(0) = ? [pid 3959] <... futex resumed>) = ? [pid 3960] <... futex resumed>) = ? [pid 3960] +++ exited with 0 +++ [pid 3959] +++ exited with 0 +++ [pid 3958] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3958, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3961 attached , child_tidptr=0x5555564465d0) = 3961 [pid 3961] set_robust_list(0x5555564465e0, 24) = 0 [pid 3961] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3961] setpgid(0, 0) = 0 [pid 3961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3961] write(3, "1000", 4) = 4 [pid 3961] close(3) = 0 [pid 3961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3961] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3961] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3961] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3962 attached , parent_tid=[3962], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3962 [pid 3962] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3962] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3961] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3962] <... futex resumed>) = 0 [pid 3962] mkdir("./file0", 000 [pid 3961] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3962] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3962] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3962] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3961] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3962] <... futex resumed>) = 0 [pid 3961] <... futex resumed>) = 1 [pid 3962] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3961] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3962] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3962] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3961] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3962] <... futex resumed>) = 0 [pid 3962] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3961] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3962] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3962] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3961] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3962] <... futex resumed>) = 0 [pid 3962] umount2("./file0", MNT_DETACH [pid 3961] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3961] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3962] <... umount2 resumed>) = 0 [pid 3961] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3962] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3962] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3961] <... mprotect resumed>) = 0 [pid 3961] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3963 attached , parent_tid=[3963], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3963 [pid 3961] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3961] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3963] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3963] umount2("./file0", MNT_DETACH) = 0 [pid 3963] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3961] <... futex resumed>) = 0 [pid 3961] exit_group(0) = ? [pid 3962] <... futex resumed>) = ? [pid 3962] +++ exited with 0 +++ [pid 3963] +++ exited with 0 +++ [pid 3961] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3961, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3964 ./strace-static-x86_64: Process 3964 attached [pid 3964] set_robust_list(0x5555564465e0, 24) = 0 [pid 3964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3964] setpgid(0, 0) = 0 [pid 3964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3964] write(3, "1000", 4) = 4 [pid 3964] close(3) = 0 [pid 3964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3964] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3964] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3964] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3965], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3965 [pid 3964] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3964] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3965 attached [pid 3965] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3965] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3965] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3964] <... futex resumed>) = 0 [pid 3964] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3964] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3965] <... futex resumed>) = 1 [pid 3965] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3965] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3964] <... futex resumed>) = 0 [pid 3964] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3964] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3965] <... futex resumed>) = 1 [pid 3965] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3965] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3964] <... futex resumed>) = 0 [pid 3965] <... futex resumed>) = 1 [pid 3964] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3965] umount2("./file0", MNT_DETACH [pid 3964] <... futex resumed>) = 0 [pid 3964] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3964] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3964] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3964] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3966], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3966 [pid 3965] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3966 attached [pid 3964] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3966] set_robust_list(0x7fc84e07e9e0, 24 [pid 3965] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3966] <... set_robust_list resumed>) = 0 [pid 3964] <... futex resumed>) = 0 [pid 3966] umount2("./file0", MNT_DETACH [pid 3965] <... futex resumed>) = 0 [pid 3964] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3965] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3966] <... umount2 resumed>) = 0 [pid 3966] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3964] <... futex resumed>) = 0 [pid 3966] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3964] exit_group(0) = ? [pid 3966] <... futex resumed>) = ? [pid 3965] <... futex resumed>) = ? [pid 3965] +++ exited with 0 +++ [pid 3966] +++ exited with 0 +++ [pid 3964] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3964, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3967 ./strace-static-x86_64: Process 3967 attached [pid 3967] set_robust_list(0x5555564465e0, 24) = 0 [pid 3967] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3967] setpgid(0, 0) = 0 [pid 3967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3967] write(3, "1000", 4) = 4 [pid 3967] close(3) = 0 [pid 3967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3967] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3967] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3967] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3968 attached [pid 3968] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3968] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3967] <... clone resumed>, parent_tid=[3968], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3968 [pid 3967] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3968] <... futex resumed>) = 0 [pid 3968] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3968] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3968] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3967] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3967] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3968] <... futex resumed>) = 0 [pid 3968] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3967] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3968] <... mount resumed>) = 0 [pid 3968] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3968] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3967] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3967] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3968] <... futex resumed>) = 0 [pid 3967] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3968] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3968] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3967] <... futex resumed>) = 0 [pid 3967] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3968] umount2("./file0", MNT_DETACH [pid 3967] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3967] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3968] <... umount2 resumed>) = 0 [pid 3967] <... mmap resumed>) = 0x7fc84e05e000 [pid 3967] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3967] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3968] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3967] <... clone resumed>, parent_tid=[3969], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3969 [pid 3968] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3967] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3967] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3969 attached [pid 3969] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3969] umount2("./file0", MNT_DETACH) = 0 [pid 3969] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3967] <... futex resumed>) = 0 [pid 3967] exit_group(0) = ? [pid 3968] <... futex resumed>) = ? [pid 3968] +++ exited with 0 +++ [pid 3969] +++ exited with 0 +++ [pid 3967] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3967, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3970 ./strace-static-x86_64: Process 3970 attached [pid 3970] set_robust_list(0x5555564465e0, 24) = 0 [pid 3970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3970] setpgid(0, 0) = 0 [pid 3970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3970] write(3, "1000", 4) = 4 [pid 3970] close(3) = 0 [pid 3970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3970] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3970] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3971], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3971 [pid 3970] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3970] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3971 attached [pid 3971] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3971] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3971] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3970] <... futex resumed>) = 0 [pid 3970] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3970] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3971] <... futex resumed>) = 1 [pid 3971] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3971] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3970] <... futex resumed>) = 0 [pid 3970] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3970] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3971] <... futex resumed>) = 1 [pid 3971] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3971] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3970] <... futex resumed>) = 0 [pid 3971] <... futex resumed>) = 1 [pid 3970] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3971] umount2("./file0", MNT_DETACH [pid 3970] <... futex resumed>) = 0 [pid 3970] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3970] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3971] <... umount2 resumed>) = 0 [pid 3970] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3971] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3972 attached ) = 0 [pid 3970] <... clone resumed>, parent_tid=[3972], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3972 [pid 3971] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3972] set_robust_list(0x7fc84e07e9e0, 24 [pid 3970] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3972] <... set_robust_list resumed>) = 0 [pid 3970] <... futex resumed>) = 0 [pid 3972] umount2("./file0", MNT_DETACH [pid 3970] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3972] <... umount2 resumed>) = 0 [pid 3972] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3970] <... futex resumed>) = 0 [pid 3972] <... futex resumed>) = 1 [pid 3970] exit_group(0 [pid 3972] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3970] <... exit_group resumed>) = ? [pid 3971] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 3972] <... futex resumed>) = ? [pid 3971] +++ exited with 0 +++ [pid 3972] +++ exited with 0 +++ [pid 3970] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3970, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3973 ./strace-static-x86_64: Process 3973 attached [pid 3973] set_robust_list(0x5555564465e0, 24) = 0 [pid 3973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3973] setpgid(0, 0) = 0 [pid 3973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3973] write(3, "1000", 4) = 4 [pid 3973] close(3) = 0 [pid 3973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3973] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3973] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3973] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3974 attached [pid 3974] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3974] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3973] <... clone resumed>, parent_tid=[3974], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3974 [pid 3973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3974] <... futex resumed>) = 0 [pid 3973] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3974] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3974] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3973] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3974] <... futex resumed>) = 0 [pid 3974] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3973] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3974] <... mount resumed>) = 0 [pid 3974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3974] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3973] <... futex resumed>) = 0 [pid 3973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3974] <... futex resumed>) = 0 [pid 3973] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3974] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3973] <... futex resumed>) = 0 [pid 3973] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3973] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3973] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3974] umount2("./file0", MNT_DETACH [pid 3973] <... mmap resumed>) = 0x7fc84e05e000 [pid 3973] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3973] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3974] <... umount2 resumed>) = 0 [pid 3973] <... clone resumed>, parent_tid=[3975], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3975 [pid 3973] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3973] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3975 attached [pid 3975] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3975] umount2("./file0", MNT_DETACH [pid 3974] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3974] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3975] <... umount2 resumed>) = 0 [pid 3975] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3973] <... futex resumed>) = 0 [pid 3975] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3973] exit_group(0 [pid 3975] <... futex resumed>) = 231 [pid 3973] <... exit_group resumed>) = ? [pid 3974] <... futex resumed>) = ? [pid 3974] +++ exited with 0 +++ [pid 3975] +++ exited with 0 +++ [pid 3973] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3973, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3976 ./strace-static-x86_64: Process 3976 attached [pid 3976] set_robust_list(0x5555564465e0, 24) = 0 [pid 3976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3976] setpgid(0, 0) = 0 [pid 3976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3976] write(3, "1000", 4) = 4 [pid 3976] close(3) = 0 [pid 3976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3976] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3976] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3977 attached , parent_tid=[3977], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3977 [pid 3977] set_robust_list(0x7fc84e09f9e0, 24 [pid 3976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3977] <... set_robust_list resumed>) = 0 [pid 3976] <... futex resumed>) = 0 [pid 3976] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3977] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3976] <... futex resumed>) = 0 [pid 3976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3976] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3977] <... futex resumed>) = 1 [pid 3977] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3976] <... futex resumed>) = 0 [pid 3976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3976] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3977] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3976] <... futex resumed>) = 0 [pid 3976] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3976] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3976] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3977] umount2("./file0", MNT_DETACH [pid 3976] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3978], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3978 [pid 3976] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3976] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3977] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3978 attached [pid 3978] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3978] umount2("./file0", MNT_DETACH [pid 3977] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3978] <... umount2 resumed>) = 0 [pid 3978] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3976] <... futex resumed>) = 0 [pid 3976] exit_group(0) = ? [pid 3978] <... futex resumed>) = ? [pid 3977] +++ exited with 0 +++ [pid 3978] +++ exited with 0 +++ [pid 3976] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3976, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3979 ./strace-static-x86_64: Process 3979 attached [pid 3979] set_robust_list(0x5555564465e0, 24) = 0 [pid 3979] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3979] setpgid(0, 0) = 0 [pid 3979] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3979] write(3, "1000", 4) = 4 [pid 3979] close(3) = 0 [pid 3979] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3979] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3979] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3979] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3980 attached [pid 3980] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3979] <... clone resumed>, parent_tid=[3980], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3980 [pid 3979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3980] <... futex resumed>) = 0 [pid 3979] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3980] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3979] <... futex resumed>) = 0 [pid 3979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3980] <... futex resumed>) = 0 [pid 3980] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3979] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3980] <... mount resumed>) = 0 [pid 3980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3979] <... futex resumed>) = 0 [pid 3980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3979] <... futex resumed>) = 0 [pid 3980] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3979] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3980] <... mount resumed>) = 0 [pid 3980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3979] <... futex resumed>) = 0 [pid 3980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3979] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3980] umount2("./file0", MNT_DETACH [pid 3979] <... futex resumed>) = 0 [pid 3979] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3979] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3980] <... umount2 resumed>) = 0 [pid 3979] <... mmap resumed>) = 0x7fc84e05e000 [pid 3980] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3979] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3980] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3979] <... mprotect resumed>) = 0 [pid 3979] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3981 attached , parent_tid=[3981], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3981 [pid 3981] set_robust_list(0x7fc84e07e9e0, 24 [pid 3979] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3981] <... set_robust_list resumed>) = 0 [pid 3979] <... futex resumed>) = 0 [pid 3981] umount2("./file0", MNT_DETACH [pid 3979] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3981] <... umount2 resumed>) = 0 [pid 3981] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3979] <... futex resumed>) = 0 [pid 3981] <... futex resumed>) = 1 [pid 3979] exit_group(0) = ? [pid 3980] <... futex resumed>) = ? [pid 3980] +++ exited with 0 +++ [pid 3981] +++ exited with 0 +++ [pid 3979] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3979, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3982 ./strace-static-x86_64: Process 3982 attached [pid 3982] set_robust_list(0x5555564465e0, 24) = 0 [pid 3982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3982] setpgid(0, 0) = 0 [pid 3982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3982] write(3, "1000", 4) = 4 [pid 3982] close(3) = 0 [pid 3982] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3982] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3982] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3983 attached , parent_tid=[3983], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3983 [pid 3983] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3983] <... futex resumed>) = 0 [pid 3983] mkdir("./file0", 000 [pid 3982] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3983] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3983] <... futex resumed>) = 0 [pid 3983] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3982] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3983] <... mount resumed>) = 0 [pid 3983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3982] <... futex resumed>) = 0 [pid 3982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3983] <... futex resumed>) = 0 [pid 3982] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3983] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 3983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3982] <... futex resumed>) = 0 [pid 3983] umount2("./file0", MNT_DETACH [pid 3982] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3982] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3982] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3983] <... umount2 resumed>) = 0 [pid 3982] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3983] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3983] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 3984 attached [pid 3984] set_robust_list(0x7fc84e07e9e0, 24 [pid 3982] <... clone resumed>, parent_tid=[3984], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3984 [pid 3984] <... set_robust_list resumed>) = 0 [pid 3982] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3984] umount2("./file0", MNT_DETACH [pid 3982] <... futex resumed>) = 0 [pid 3982] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3984] <... umount2 resumed>) = 0 [pid 3984] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3982] <... futex resumed>) = 0 [pid 3984] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3982] exit_group(0) = ? [pid 3983] <... futex resumed>) = ? [pid 3983] +++ exited with 0 +++ [pid 3984] <... futex resumed>) = ? [pid 3984] +++ exited with 0 +++ [pid 3982] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3982, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3985 ./strace-static-x86_64: Process 3985 attached [pid 3985] set_robust_list(0x5555564465e0, 24) = 0 [pid 3985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3985] setpgid(0, 0) = 0 [pid 3985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3985] write(3, "1000", 4) = 4 [pid 3985] close(3) = 0 [pid 3985] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3985] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3985] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3986 attached [pid 3986] set_robust_list(0x7fc84e09f9e0, 24 [pid 3985] <... clone resumed>, parent_tid=[3986], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3986 [pid 3986] <... set_robust_list resumed>) = 0 [pid 3985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3986] mkdir("./file0", 000 [pid 3985] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3986] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 3986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3985] <... futex resumed>) = 0 [pid 3986] <... futex resumed>) = 1 [pid 3985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3986] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3985] <... futex resumed>) = 0 [pid 3985] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3986] <... mount resumed>) = 0 [pid 3986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3985] <... futex resumed>) = 0 [pid 3986] <... futex resumed>) = 1 [pid 3985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3986] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3985] <... futex resumed>) = 0 [pid 3985] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3986] <... mount resumed>) = 0 [pid 3986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3985] <... futex resumed>) = 0 [pid 3985] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3986] umount2("./file0", MNT_DETACH [pid 3985] <... futex resumed>) = 0 [pid 3985] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3986] <... umount2 resumed>) = 0 [pid 3985] <... mmap resumed>) = 0x7fc84e05e000 [pid 3985] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3985] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3986] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3987 attached ) = 0 [pid 3985] <... clone resumed>, parent_tid=[3987], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3987 [pid 3987] set_robust_list(0x7fc84e07e9e0, 24 [pid 3986] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3985] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3987] <... set_robust_list resumed>) = 0 [pid 3985] <... futex resumed>) = 0 [pid 3987] umount2("./file0", MNT_DETACH [pid 3985] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3987] <... umount2 resumed>) = 0 [pid 3987] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3985] <... futex resumed>) = 0 [pid 3987] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3985] exit_group(0) = ? [pid 3986] <... futex resumed>) = ? [pid 3987] <... futex resumed>) = ? [pid 3987] +++ exited with 0 +++ [pid 3986] +++ exited with 0 +++ [pid 3985] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3985, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3988 ./strace-static-x86_64: Process 3988 attached [pid 3988] set_robust_list(0x5555564465e0, 24) = 0 [pid 3988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3988] setpgid(0, 0) = 0 [pid 3988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3988] write(3, "1000", 4) = 4 [pid 3988] close(3) = 0 [pid 3988] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3988] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3988] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3989], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3989 [pid 3988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3988] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3989 attached [pid 3989] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3989] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3988] <... futex resumed>) = 0 [pid 3988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3988] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3989] <... futex resumed>) = 1 [pid 3989] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3988] <... futex resumed>) = 0 [pid 3988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3989] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3988] <... futex resumed>) = 0 [pid 3988] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3989] <... mount resumed>) = 0 [pid 3989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3988] <... futex resumed>) = 0 [pid 3989] umount2("./file0", MNT_DETACH [pid 3988] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3988] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3988] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3988] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3989] <... umount2 resumed>) = 0 [pid 3989] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3990 attached ) = 0 [pid 3988] <... clone resumed>, parent_tid=[3990], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3990 [pid 3990] set_robust_list(0x7fc84e07e9e0, 24 [pid 3988] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3989] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3988] <... futex resumed>) = 0 [pid 3990] <... set_robust_list resumed>) = 0 [pid 3988] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3990] umount2("./file0", MNT_DETACH) = 0 [pid 3990] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3990] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3988] <... futex resumed>) = 0 [pid 3988] exit_group(0) = ? [pid 3990] <... futex resumed>) = ? [pid 3990] +++ exited with 0 +++ [pid 3989] <... futex resumed>) = ? [pid 3989] +++ exited with 0 +++ [pid 3988] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3988, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3991 ./strace-static-x86_64: Process 3991 attached [pid 3991] set_robust_list(0x5555564465e0, 24) = 0 [pid 3991] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3991] setpgid(0, 0) = 0 [pid 3991] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3991] write(3, "1000", 4) = 4 [pid 3991] close(3) = 0 [pid 3991] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3991] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3991] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3991] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3992 attached , parent_tid=[3992], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3992 [pid 3992] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3992] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3992] <... futex resumed>) = 0 [pid 3992] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3991] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3992] <... futex resumed>) = 0 [pid 3992] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3992] <... futex resumed>) = 0 [pid 3992] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 3991] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3992] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3992] <... futex resumed>) = 0 [pid 3992] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3991] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3992] <... mount resumed>) = 0 [pid 3992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3992] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3991] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3992] <... futex resumed>) = 0 [pid 3991] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3991] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3992] umount2("./file0", MNT_DETACH [pid 3991] <... mmap resumed>) = 0x7fc84e05e000 [pid 3991] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3991] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3992] <... umount2 resumed>) = 0 [pid 3992] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3991] <... clone resumed>, parent_tid=[3993], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3993 [pid 3992] <... futex resumed>) = 0 [pid 3991] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3992] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3991] <... futex resumed>) = 0 ./strace-static-x86_64: Process 3993 attached [pid 3991] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3993] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3993] umount2("./file0", MNT_DETACH) = 0 [pid 3993] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3991] <... futex resumed>) = 0 [pid 3993] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3991] exit_group(0) = ? [pid 3992] <... futex resumed>) = ? [pid 3992] +++ exited with 0 +++ [pid 3993] <... futex resumed>) = ? [pid 3993] +++ exited with 0 +++ [pid 3991] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3991, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3994 ./strace-static-x86_64: Process 3994 attached [pid 3994] set_robust_list(0x5555564465e0, 24) = 0 [pid 3994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3994] setpgid(0, 0) = 0 [pid 3994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3994] write(3, "1000", 4) = 4 [pid 3994] close(3) = 0 [pid 3994] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3994] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3994] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3995 attached [pid 3995] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 3995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3994] <... clone resumed>, parent_tid=[3995], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3995 [pid 3994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3995] <... futex resumed>) = 0 [pid 3995] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3994] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3995] <... futex resumed>) = 0 [pid 3995] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3994] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3995] <... mount resumed>) = 0 [pid 3995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3994] <... futex resumed>) = 0 [pid 3994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3995] <... futex resumed>) = 0 [pid 3995] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3994] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3995] <... mount resumed>) = 0 [pid 3995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3994] <... futex resumed>) = 0 [pid 3995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3994] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3995] umount2("./file0", MNT_DETACH [pid 3994] <... futex resumed>) = 0 [pid 3994] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 3995] <... umount2 resumed>) = 0 [pid 3994] <... mmap resumed>) = 0x7fc84e05e000 [pid 3995] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3994] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 3995] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3994] <... mprotect resumed>) = 0 [pid 3994] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3996 attached [pid 3996] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 3996] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3994] <... clone resumed>, parent_tid=[3996], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3996 [pid 3994] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3996] <... futex resumed>) = 0 [pid 3994] <... futex resumed>) = 1 [pid 3994] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3996] umount2("./file0", MNT_DETACH) = 0 [pid 3996] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3996] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3994] <... futex resumed>) = 0 [pid 3994] exit_group(0) = ? [pid 3995] <... futex resumed>) = ? [pid 3995] +++ exited with 0 +++ [pid 3996] <... futex resumed>) = ? [pid 3996] +++ exited with 0 +++ [pid 3994] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3994, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 3997 ./strace-static-x86_64: Process 3997 attached [pid 3997] set_robust_list(0x5555564465e0, 24) = 0 [pid 3997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3997] setpgid(0, 0) = 0 [pid 3997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3997] write(3, "1000", 4) = 4 [pid 3997] close(3) = 0 [pid 3997] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 3997] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3997] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3998 attached , parent_tid=[3998], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 3998 [pid 3998] set_robust_list(0x7fc84e09f9e0, 24 [pid 3997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3998] <... set_robust_list resumed>) = 0 [pid 3997] <... futex resumed>) = 0 [pid 3997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3998] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 3998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3997] <... futex resumed>) = 0 [pid 3998] <... futex resumed>) = 1 [pid 3997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3998] mount(NULL, "./file0", "ramfs", 0, NULL [pid 3997] <... futex resumed>) = 0 [pid 3997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3998] <... mount resumed>) = 0 [pid 3998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3997] <... futex resumed>) = 0 [pid 3998] <... futex resumed>) = 1 [pid 3997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3998] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 3997] <... futex resumed>) = 0 [pid 3997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3998] <... mount resumed>) = 0 [pid 3998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3997] <... futex resumed>) = 0 [pid 3998] <... futex resumed>) = 1 [pid 3997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3998] umount2("./file0", MNT_DETACH [pid 3997] <... futex resumed>) = 0 [pid 3997] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 3997] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3997] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 3998] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 3999 attached [pid 3998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3997] <... clone resumed>, parent_tid=[3999], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 3999 [pid 3999] set_robust_list(0x7fc84e07e9e0, 24 [pid 3998] <... futex resumed>) = 0 [pid 3999] <... set_robust_list resumed>) = 0 [pid 3998] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3997] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3999] umount2("./file0", MNT_DETACH [pid 3997] <... futex resumed>) = 0 [pid 3997] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3999] <... umount2 resumed>) = 0 [pid 3999] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3997] <... futex resumed>) = 0 [pid 3999] <... futex resumed>) = 1 [pid 3999] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3997] exit_group(0) = ? [pid 3998] <... futex resumed>) = 231 [pid 3998] +++ exited with 0 +++ [pid 3999] <... futex resumed>) = ? [pid 3999] +++ exited with 0 +++ [pid 3997] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3997, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4000 ./strace-static-x86_64: Process 4000 attached [pid 4000] set_robust_list(0x5555564465e0, 24) = 0 [pid 4000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4000] setpgid(0, 0) = 0 [pid 4000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4000] write(3, "1000", 4) = 4 [pid 4000] close(3) = 0 [pid 4000] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4000] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4000] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4001 attached , parent_tid=[4001], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4001 [pid 4001] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4001] <... futex resumed>) = 0 [pid 4001] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4001] <... futex resumed>) = 0 [pid 4001] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4001] <... mount resumed>) = 0 [pid 4001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4000] <... futex resumed>) = 0 [pid 4000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4001] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4000] <... futex resumed>) = 0 [pid 4000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4000] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4000] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4000] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4001] umount2("./file0", MNT_DETACH [pid 4000] <... clone resumed>, parent_tid=[4002], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4002 [pid 4000] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4000] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4002 attached [pid 4002] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4002] umount2("./file0", MNT_DETACH) = 0 [pid 4001] <... umount2 resumed>) = 0 [pid 4002] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4000] <... futex resumed>) = 0 [pid 4002] <... futex resumed>) = 1 [pid 4002] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4000] exit_group(0) = ? [pid 4002] <... futex resumed>) = ? [pid 4001] <... futex resumed>) = ? [pid 4002] +++ exited with 0 +++ [pid 4001] +++ exited with 0 +++ [pid 4000] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4000, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4003 ./strace-static-x86_64: Process 4003 attached [pid 4003] set_robust_list(0x5555564465e0, 24) = 0 [pid 4003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4003] setpgid(0, 0) = 0 [pid 4003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4003] write(3, "1000", 4) = 4 [pid 4003] close(3) = 0 [pid 4003] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4003] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4003] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4004 attached , parent_tid=[4004], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4004 [pid 4004] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4004] <... futex resumed>) = 0 [pid 4004] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4004] <... futex resumed>) = 0 [pid 4004] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4003] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4004] <... futex resumed>) = 0 [pid 4003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4004] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4003] <... futex resumed>) = 0 [pid 4003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4004] <... mount resumed>) = 0 [pid 4004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4003] <... futex resumed>) = 0 [pid 4004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4004] umount2("./file0", MNT_DETACH [pid 4003] <... futex resumed>) = 0 [pid 4003] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4003] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4004] <... umount2 resumed>) = 0 [pid 4003] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4003] <... clone resumed>, parent_tid=[4005], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4005 [pid 4003] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4003] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4005 attached [pid 4003] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4005] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4005] umount2("./file0", MNT_DETACH) = 0 [pid 4005] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4003] <... futex resumed>) = 0 [pid 4005] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4003] exit_group(0) = ? [pid 4004] <... futex resumed>) = ? [pid 4004] +++ exited with 0 +++ [pid 4005] <... futex resumed>) = ? [pid 4005] +++ exited with 0 +++ [pid 4003] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4003, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4006 ./strace-static-x86_64: Process 4006 attached [pid 4006] set_robust_list(0x5555564465e0, 24) = 0 [pid 4006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4006] setpgid(0, 0) = 0 [pid 4006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4006] write(3, "1000", 4) = 4 [pid 4006] close(3) = 0 [pid 4006] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4006] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4006] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4007 attached , parent_tid=[4007], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4007 [pid 4007] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4007] <... futex resumed>) = 0 [pid 4007] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4006] <... futex resumed>) = 0 [pid 4006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4007] <... futex resumed>) = 0 [pid 4007] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4007] <... mount resumed>) = 0 [pid 4007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4006] <... futex resumed>) = 0 [pid 4006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4007] <... futex resumed>) = 0 [pid 4006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4007] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4006] <... futex resumed>) = 0 [pid 4007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4007] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4006] <... futex resumed>) = 0 [pid 4007] umount2("./file0", MNT_DETACH [pid 4006] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4006] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4006] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4008], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4008 [pid 4006] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4007] <... umount2 resumed>) = 0 [pid 4006] <... futex resumed>) = 0 [pid 4006] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4008 attached [pid 4008] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4008] umount2("./file0", MNT_DETACH) = 0 [pid 4008] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4006] <... futex resumed>) = 0 [pid 4006] exit_group(0) = ? [pid 4007] <... futex resumed>) = ? [pid 4007] +++ exited with 0 +++ [pid 4008] +++ exited with 0 +++ [pid 4006] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4006, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4009 ./strace-static-x86_64: Process 4009 attached [pid 4009] set_robust_list(0x5555564465e0, 24) = 0 [pid 4009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4009] setpgid(0, 0) = 0 [pid 4009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4009] write(3, "1000", 4) = 4 [pid 4009] close(3) = 0 [pid 4009] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4009] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4009] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4009] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4010 attached , parent_tid=[4010], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4010 [pid 4010] set_robust_list(0x7fc84e09f9e0, 24 [pid 4009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4010] <... set_robust_list resumed>) = 0 [pid 4009] <... futex resumed>) = 0 [pid 4009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4010] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4009] <... futex resumed>) = 0 [pid 4010] <... futex resumed>) = 1 [pid 4009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4010] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4009] <... futex resumed>) = 0 [pid 4009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4010] <... mount resumed>) = 0 [pid 4010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4009] <... futex resumed>) = 0 [pid 4010] <... futex resumed>) = 1 [pid 4010] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4010] <... mount resumed>) = 0 [pid 4010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4009] <... futex resumed>) = 0 [pid 4009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4009] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4009] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4009] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4009] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4011 attached [pid 4011] set_robust_list(0x7fc84e07e9e0, 24 [pid 4009] <... clone resumed>, parent_tid=[4011], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4011 [pid 4011] <... set_robust_list resumed>) = 0 [pid 4009] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4011] umount2("./file0", MNT_DETACH [pid 4009] <... futex resumed>) = 0 [pid 4009] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4011] <... umount2 resumed>) = 0 [pid 4010] umount2("./file0", MNT_DETACH [pid 4011] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4011] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4009] <... futex resumed>) = 0 [pid 4010] <... umount2 resumed>) = 0 [pid 4010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4010] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4009] exit_group(0) = ? [pid 4011] <... futex resumed>) = ? [pid 4011] +++ exited with 0 +++ [pid 4010] <... futex resumed>) = ? [pid 4010] +++ exited with 0 +++ [pid 4009] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4009, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4012 ./strace-static-x86_64: Process 4012 attached [pid 4012] set_robust_list(0x5555564465e0, 24) = 0 [pid 4012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4012] setpgid(0, 0) = 0 [pid 4012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4012] write(3, "1000", 4) = 4 [pid 4012] close(3) = 0 [pid 4012] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4012] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4012] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4013], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4013 [pid 4012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4013 attached [pid 4013] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4013] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4012] <... futex resumed>) = 0 [pid 4012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4013] <... futex resumed>) = 1 [pid 4013] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4012] <... futex resumed>) = 0 [pid 4012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4013] <... futex resumed>) = 1 [pid 4013] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4012] <... futex resumed>) = 0 [pid 4013] umount2("./file0", MNT_DETACH [pid 4012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4012] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4013] <... umount2 resumed>) = 0 [pid 4012] <... mprotect resumed>) = 0 [pid 4013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4012] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4014 attached [pid 4013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4014] set_robust_list(0x7fc84e07e9e0, 24 [pid 4012] <... clone resumed>, parent_tid=[4014], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4014 [pid 4014] <... set_robust_list resumed>) = 0 [pid 4012] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4014] umount2("./file0", MNT_DETACH [pid 4012] <... futex resumed>) = 0 [pid 4012] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4014] <... umount2 resumed>) = 0 [pid 4014] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4012] <... futex resumed>) = 0 [pid 4012] exit_group(0) = ? [pid 4013] <... futex resumed>) = ? [pid 4013] +++ exited with 0 +++ [pid 4014] +++ exited with 0 +++ [pid 4012] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4012, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4015 ./strace-static-x86_64: Process 4015 attached [pid 4015] set_robust_list(0x5555564465e0, 24) = 0 [pid 4015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4015] setpgid(0, 0) = 0 [pid 4015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4015] write(3, "1000", 4) = 4 [pid 4015] close(3) = 0 [pid 4015] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4015] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4015] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4016 attached , parent_tid=[4016], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4016 [pid 4016] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4016] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4016] <... futex resumed>) = 0 [pid 4016] mkdir("./file0", 000 [pid 4015] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4016] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4016] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4015] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4016] <... futex resumed>) = 0 [pid 4016] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4015] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4016] <... mount resumed>) = 0 [pid 4016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4016] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4015] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4016] <... futex resumed>) = 0 [pid 4016] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4015] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4016] <... mount resumed>) = 0 [pid 4016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4016] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4015] <... futex resumed>) = 0 [pid 4015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4015] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4015] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4016] <... futex resumed>) = 0 [pid 4015] <... mprotect resumed>) = 0 [pid 4015] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4017], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4017 [pid 4016] umount2("./file0", MNT_DETACH [pid 4015] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4015] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4017 attached [pid 4017] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4017] umount2("./file0", MNT_DETACH [pid 4016] <... umount2 resumed>) = 0 [pid 4016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4017] <... umount2 resumed>) = 0 [pid 4017] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4015] <... futex resumed>) = 0 [pid 4015] exit_group(0) = ? [pid 4017] <... futex resumed>) = ? [pid 4017] +++ exited with 0 +++ [pid 4016] <... futex resumed>) = ? [pid 4016] +++ exited with 0 +++ [pid 4015] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4015, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4018 ./strace-static-x86_64: Process 4018 attached [pid 4018] set_robust_list(0x5555564465e0, 24) = 0 [pid 4018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4018] setpgid(0, 0) = 0 [pid 4018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4018] write(3, "1000", 4) = 4 [pid 4018] close(3) = 0 [pid 4018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4018] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4018] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4019 attached [pid 4019] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4018] <... clone resumed>, parent_tid=[4019], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4019 [pid 4018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4019] <... futex resumed>) = 0 [pid 4018] <... futex resumed>) = 1 [pid 4018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4019] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4019] <... futex resumed>) = 0 [pid 4019] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4018] <... futex resumed>) = 1 [pid 4018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4019] <... mount resumed>) = 0 [pid 4019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4018] <... futex resumed>) = 0 [pid 4019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4018] <... futex resumed>) = 0 [pid 4019] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4019] <... mount resumed>) = 0 [pid 4019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4018] <... futex resumed>) = 0 [pid 4018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4018] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4018] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4019] umount2("./file0", MNT_DETACH [pid 4018] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4020], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4020 [pid 4018] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4018] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4020 attached [pid 4020] set_robust_list(0x7fc84e07e9e0, 24 [pid 4019] <... umount2 resumed>) = 0 [pid 4019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4020] <... set_robust_list resumed>) = 0 [pid 4020] umount2("./file0", MNT_DETACH) = 0 [pid 4020] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4018] <... futex resumed>) = 0 [pid 4020] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4018] exit_group(0) = ? [pid 4019] <... futex resumed>) = ? [pid 4020] <... futex resumed>) = ? [pid 4020] +++ exited with 0 +++ [pid 4019] +++ exited with 0 +++ [pid 4018] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4018, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4021 ./strace-static-x86_64: Process 4021 attached [pid 4021] set_robust_list(0x5555564465e0, 24) = 0 [pid 4021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4021] setpgid(0, 0) = 0 [pid 4021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4021] write(3, "1000", 4) = 4 [pid 4021] close(3) = 0 [pid 4021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4021] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4021] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4021] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4022 attached [pid 4022] set_robust_list(0x7fc84e09f9e0, 24 [pid 4021] <... clone resumed>, parent_tid=[4022], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4022 [pid 4022] <... set_robust_list resumed>) = 0 [pid 4021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4022] mkdir("./file0", 000 [pid 4021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4022] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4021] <... futex resumed>) = 0 [pid 4022] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4022] <... mount resumed>) = 0 [pid 4022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4021] <... futex resumed>) = 0 [pid 4021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4022] <... futex resumed>) = 0 [pid 4022] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4022] <... mount resumed>) = 0 [pid 4022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4021] <... futex resumed>) = 0 [pid 4021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4022] <... futex resumed>) = 0 [pid 4022] umount2("./file0", MNT_DETACH [pid 4021] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4022] <... umount2 resumed>) = 0 [pid 4022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4021] <... futex resumed>) = 0 [pid 4021] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4021] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4021] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4023 attached [pid 4023] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4023] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4021] <... clone resumed>, parent_tid=[4023], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4023 [pid 4021] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4023] <... futex resumed>) = 0 [pid 4023] umount2("./file0", MNT_DETACH [pid 4021] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4023] <... umount2 resumed>) = 0 [pid 4023] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4021] <... futex resumed>) = 0 [pid 4021] exit_group(0) = ? [pid 4022] <... futex resumed>) = ? [pid 4022] +++ exited with 0 +++ [pid 4023] +++ exited with 0 +++ [pid 4021] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4021, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4024 ./strace-static-x86_64: Process 4024 attached [pid 4024] set_robust_list(0x5555564465e0, 24) = 0 [pid 4024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4024] setpgid(0, 0) = 0 [pid 4024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4024] write(3, "1000", 4) = 4 [pid 4024] close(3) = 0 [pid 4024] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4024] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4024] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4025 attached , parent_tid=[4025], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4025 [pid 4025] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4025] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4024] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4025] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4024] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] <... futex resumed>) = 0 [pid 4025] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4024] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4025] <... mount resumed>) = 0 [pid 4025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4024] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4025] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4025] umount2("./file0", MNT_DETACH [pid 4024] <... futex resumed>) = 0 [pid 4024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4024] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4024] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4026], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4026 [pid 4025] <... umount2 resumed>) = 0 [pid 4024] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4024] <... futex resumed>) = 0 [pid 4025] <... futex resumed>) = 0 [pid 4024] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4026 attached [pid 4026] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4026] umount2("./file0", MNT_DETACH) = 0 [pid 4026] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4024] <... futex resumed>) = 0 [pid 4024] exit_group(0) = ? [pid 4026] +++ exited with 0 +++ [pid 4025] <... futex resumed>) = ? [pid 4025] +++ exited with 0 +++ [pid 4024] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4024, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4027 ./strace-static-x86_64: Process 4027 attached [pid 4027] set_robust_list(0x5555564465e0, 24) = 0 [pid 4027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4027] setpgid(0, 0) = 0 [pid 4027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4027] write(3, "1000", 4) = 4 [pid 4027] close(3) = 0 [pid 4027] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4027] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4027] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4028], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4028 [pid 4027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4028 attached [pid 4028] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4028] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4027] <... futex resumed>) = 0 [pid 4027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4028] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4027] <... futex resumed>) = 0 [pid 4027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4028] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4027] <... futex resumed>) = 0 [pid 4027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4027] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4027] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4028] umount2("./file0", MNT_DETACH [pid 4027] <... clone resumed>, parent_tid=[4029], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4029 [pid 4027] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4027] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4029 attached [pid 4029] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4029] umount2("./file0", MNT_DETACH) = 0 [pid 4029] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4027] <... futex resumed>) = 0 [pid 4028] <... umount2 resumed>) = 0 [pid 4029] <... futex resumed>) = 1 [pid 4029] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4028] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4027] exit_group(0) = ? [pid 4029] <... futex resumed>) = ? [pid 4028] <... futex resumed>) = ? [pid 4029] +++ exited with 0 +++ [pid 4028] +++ exited with 0 +++ [pid 4027] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4027, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4030 ./strace-static-x86_64: Process 4030 attached [pid 4030] set_robust_list(0x5555564465e0, 24) = 0 [pid 4030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4030] setpgid(0, 0) = 0 [pid 4030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4030] write(3, "1000", 4) = 4 [pid 4030] close(3) = 0 [pid 4030] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4030] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4030] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4031 attached , parent_tid=[4031], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4031 [pid 4031] set_robust_list(0x7fc84e09f9e0, 24 [pid 4030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4031] <... set_robust_list resumed>) = 0 [pid 4030] <... futex resumed>) = 0 [pid 4030] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4031] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4030] <... futex resumed>) = 0 [pid 4031] <... futex resumed>) = 1 [pid 4030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4030] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4031] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4030] <... futex resumed>) = 0 [pid 4031] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4030] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4031] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4030] <... futex resumed>) = 0 [pid 4030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4030] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4030] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4030] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4031] umount2("./file0", MNT_DETACH [pid 4030] <... clone resumed>, parent_tid=[4032], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4032 [pid 4030] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4030] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4031] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4032 attached [pid 4032] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4032] umount2("./file0", MNT_DETACH [pid 4031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4032] <... umount2 resumed>) = 0 [pid 4031] <... futex resumed>) = 0 [pid 4032] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4030] <... futex resumed>) = 0 [pid 4030] exit_group(0) = ? [pid 4032] <... futex resumed>) = ? [pid 4032] +++ exited with 0 +++ [pid 4031] +++ exited with 0 +++ [pid 4030] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4030, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4033 ./strace-static-x86_64: Process 4033 attached [pid 4033] set_robust_list(0x5555564465e0, 24) = 0 [pid 4033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4033] setpgid(0, 0) = 0 [pid 4033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4033] write(3, "1000", 4) = 4 [pid 4033] close(3) = 0 [pid 4033] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4033] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4033] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4034], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4034 [pid 4033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4034 attached [pid 4034] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4034] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4033] <... futex resumed>) = 0 [pid 4033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4034] <... futex resumed>) = 1 [pid 4034] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4033] <... futex resumed>) = 0 [pid 4033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4034] <... futex resumed>) = 1 [pid 4034] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4033] <... futex resumed>) = 0 [pid 4033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4034] <... futex resumed>) = 1 [pid 4033] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4033] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4035], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4035 [pid 4033] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4033] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4034] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4035 attached [pid 4035] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4034] <... umount2 resumed>) = 0 [pid 4035] umount2("./file0", MNT_DETACH [pid 4034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4034] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4035] <... umount2 resumed>) = 0 [pid 4035] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4035] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4033] <... futex resumed>) = 0 [pid 4033] exit_group(0) = ? [pid 4035] <... futex resumed>) = 231 [pid 4034] <... futex resumed>) = ? [pid 4034] +++ exited with 0 +++ [pid 4035] +++ exited with 0 +++ [pid 4033] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4033, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4036 attached , child_tidptr=0x5555564465d0) = 4036 [pid 4036] set_robust_list(0x5555564465e0, 24) = 0 [pid 4036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4036] setpgid(0, 0) = 0 [pid 4036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4036] write(3, "1000", 4) = 4 [pid 4036] close(3) = 0 [pid 4036] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4036] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4036] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4037 attached , parent_tid=[4037], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4037 [pid 4037] set_robust_list(0x7fc84e09f9e0, 24 [pid 4036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4037] <... set_robust_list resumed>) = 0 [pid 4037] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4036] <... futex resumed>) = 1 [pid 4037] <... futex resumed>) = 0 [pid 4037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4036] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4037] <... futex resumed>) = 0 [pid 4037] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4036] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4037] <... mount resumed>) = 0 [pid 4037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4036] <... futex resumed>) = 0 [pid 4036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4037] <... futex resumed>) = 0 [pid 4037] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4036] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4037] <... mount resumed>) = 0 [pid 4037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4036] <... futex resumed>) = 0 [pid 4036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4036] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4036] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4036] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4038], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4038 [pid 4036] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4036] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4037] <... futex resumed>) = 0 [pid 4037] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4038 attached ) = 0 [pid 4037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4038] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4038] umount2("./file0", MNT_DETACH) = 0 [pid 4038] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4036] <... futex resumed>) = 0 [pid 4036] exit_group(0) = ? [pid 4037] <... futex resumed>) = ? [pid 4037] +++ exited with 0 +++ [pid 4038] +++ exited with 0 +++ [pid 4036] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4036, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4039 ./strace-static-x86_64: Process 4039 attached [pid 4039] set_robust_list(0x5555564465e0, 24) = 0 [pid 4039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4039] setpgid(0, 0) = 0 [pid 4039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4039] write(3, "1000", 4) = 4 [pid 4039] close(3) = 0 [pid 4039] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4039] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4039] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4039] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4040 attached , parent_tid=[4040], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4040 [pid 4040] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4040] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4040] <... futex resumed>) = 0 [pid 4040] mkdir("./file0", 000 [pid 4039] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4040] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4040] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4039] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4040] <... futex resumed>) = 0 [pid 4040] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4039] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4040] <... mount resumed>) = 0 [pid 4040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4040] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4039] <... futex resumed>) = 0 [pid 4039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4040] <... futex resumed>) = 0 [pid 4039] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4040] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4040] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4039] <... futex resumed>) = 0 [pid 4039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4040] <... futex resumed>) = 0 [pid 4039] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4040] umount2("./file0", MNT_DETACH [pid 4039] <... futex resumed>) = 0 [pid 4039] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4039] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4039] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4041 attached , parent_tid=[4041], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4041 [pid 4041] set_robust_list(0x7fc84e07e9e0, 24 [pid 4039] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4041] <... set_robust_list resumed>) = 0 [pid 4039] <... futex resumed>) = 0 [pid 4041] umount2("./file0", MNT_DETACH [pid 4039] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4041] <... umount2 resumed>) = 0 [pid 4041] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4040] <... umount2 resumed>) = 0 [pid 4039] <... futex resumed>) = 0 [pid 4041] <... futex resumed>) = 1 [pid 4040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4039] exit_group(0 [pid 4041] ????( [pid 4040] <... futex resumed>) = ? [pid 4041] <... ???? resumed>) = ? [pid 4039] <... exit_group resumed>) = ? [pid 4040] +++ exited with 0 +++ [pid 4041] +++ exited with 0 +++ [pid 4039] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4039, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4042 ./strace-static-x86_64: Process 4042 attached [pid 4042] set_robust_list(0x5555564465e0, 24) = 0 [pid 4042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4042] setpgid(0, 0) = 0 [pid 4042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4042] write(3, "1000", 4) = 4 [pid 4042] close(3) = 0 [pid 4042] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4042] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4042] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4043], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4043 ./strace-static-x86_64: Process 4043 attached [pid 4042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4043] set_robust_list(0x7fc84e09f9e0, 24 [pid 4042] <... futex resumed>) = 0 [pid 4043] <... set_robust_list resumed>) = 0 [pid 4043] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4043] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4042] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4042] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4043] <... futex resumed>) = 0 [pid 4043] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4043] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4042] <... futex resumed>) = 0 [pid 4042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4043] <... futex resumed>) = 0 [pid 4042] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4043] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4042] <... futex resumed>) = 0 [pid 4043] umount2("./file0", MNT_DETACH [pid 4042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4042] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4043] <... umount2 resumed>) = 0 [pid 4042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4042] <... mmap resumed>) = 0x7fc84e05e000 [pid 4043] <... futex resumed>) = 0 [pid 4042] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4043] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4042] <... mprotect resumed>) = 0 [pid 4042] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4044], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4044 [pid 4042] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 4044 attached [pid 4042] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4044] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4044] umount2("./file0", MNT_DETACH) = 0 [pid 4044] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4042] <... futex resumed>) = 0 [pid 4044] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4042] exit_group(0) = ? [pid 4044] <... futex resumed>) = ? [pid 4043] <... futex resumed>) = ? [pid 4043] +++ exited with 0 +++ [pid 4044] +++ exited with 0 +++ [pid 4042] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4042, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4045 attached , child_tidptr=0x5555564465d0) = 4045 [pid 4045] set_robust_list(0x5555564465e0, 24) = 0 [pid 4045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4045] setpgid(0, 0) = 0 [pid 4045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4045] write(3, "1000", 4) = 4 [pid 4045] close(3) = 0 [pid 4045] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4045] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4045] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4046 attached , parent_tid=[4046], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4046 [pid 4046] set_robust_list(0x7fc84e09f9e0, 24 [pid 4045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4046] <... set_robust_list resumed>) = 0 [pid 4045] <... futex resumed>) = 0 [pid 4045] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4046] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4045] <... futex resumed>) = 0 [pid 4046] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4045] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4046] <... mount resumed>) = 0 [pid 4046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4045] <... futex resumed>) = 0 [pid 4046] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4045] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4046] <... mount resumed>) = 0 [pid 4046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4045] <... futex resumed>) = 0 [pid 4046] umount2("./file0", MNT_DETACH [pid 4045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4045] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4046] <... umount2 resumed>) = 0 [pid 4045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4045] <... mmap resumed>) = 0x7fc84e05e000 [pid 4045] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4045] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4047 attached , parent_tid=[4047], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4047 [pid 4047] set_robust_list(0x7fc84e07e9e0, 24 [pid 4045] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4047] <... set_robust_list resumed>) = 0 [pid 4045] <... futex resumed>) = 0 [pid 4047] umount2("./file0", MNT_DETACH [pid 4045] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4046] <... futex resumed>) = 0 [pid 4046] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4047] <... umount2 resumed>) = 0 [pid 4047] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4045] <... futex resumed>) = 0 [pid 4045] exit_group(0 [pid 4047] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4045] <... exit_group resumed>) = ? [pid 4046] <... futex resumed>) = ? [pid 4047] <... futex resumed>) = ? [pid 4046] +++ exited with 0 +++ [pid 4047] +++ exited with 0 +++ [pid 4045] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4045, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4048 attached , child_tidptr=0x5555564465d0) = 4048 [pid 4048] set_robust_list(0x5555564465e0, 24) = 0 [pid 4048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4048] setpgid(0, 0) = 0 [pid 4048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4048] write(3, "1000", 4) = 4 [pid 4048] close(3) = 0 [pid 4048] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4048] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4048] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4049 attached [pid 4049] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4049] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4048] <... clone resumed>, parent_tid=[4049], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4049 [pid 4048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4049] <... futex resumed>) = 0 [pid 4049] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4049] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4048] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4049] <... futex resumed>) = 0 [pid 4049] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4048] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4049] <... mount resumed>) = 0 [pid 4049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4049] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4049] <... futex resumed>) = 0 [pid 4049] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4048] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4049] <... mount resumed>) = 0 [pid 4049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4048] <... futex resumed>) = 0 [pid 4049] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4048] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4048] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4048] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4049] umount2("./file0", MNT_DETACH [pid 4048] <... clone resumed>, parent_tid=[4050], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4050 [pid 4048] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4048] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4049] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4050 attached [pid 4050] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4050] umount2("./file0", MNT_DETACH [pid 4049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4050] <... umount2 resumed>) = 0 [pid 4049] <... futex resumed>) = 0 [pid 4050] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4048] <... futex resumed>) = 0 [pid 4048] exit_group(0) = ? [pid 4050] <... futex resumed>) = ? [pid 4049] +++ exited with 0 +++ [pid 4050] +++ exited with 0 +++ [pid 4048] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4048, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4051 ./strace-static-x86_64: Process 4051 attached [pid 4051] set_robust_list(0x5555564465e0, 24) = 0 [pid 4051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4051] setpgid(0, 0) = 0 [pid 4051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4051] write(3, "1000", 4) = 4 [pid 4051] close(3) = 0 [pid 4051] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4051] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4051] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4051] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4052 attached , parent_tid=[4052], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4052 [pid 4052] set_robust_list(0x7fc84e09f9e0, 24 [pid 4051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4052] <... set_robust_list resumed>) = 0 [pid 4051] <... futex resumed>) = 0 [pid 4052] mkdir("./file0", 000 [pid 4051] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4052] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4051] <... futex resumed>) = 0 [pid 4052] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4052] <... mount resumed>) = 0 [pid 4051] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4051] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4052] <... futex resumed>) = 0 [pid 4051] <... futex resumed>) = 1 [pid 4052] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4051] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4052] <... mount resumed>) = 0 [pid 4052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4051] <... futex resumed>) = 0 [pid 4052] umount2("./file0", MNT_DETACH [pid 4051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4051] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4051] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4051] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4051] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4052] <... umount2 resumed>) = 0 [pid 4052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4051] <... clone resumed>, parent_tid=[4053], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4053 [pid 4052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4051] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4051] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4053 attached [pid 4053] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4053] umount2("./file0", MNT_DETACH) = 0 [pid 4053] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4051] <... futex resumed>) = 0 [pid 4053] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4051] exit_group(0 [pid 4053] <... futex resumed>) = ? [pid 4051] <... exit_group resumed>) = ? [pid 4052] <... futex resumed>) = ? [pid 4052] +++ exited with 0 +++ [pid 4053] +++ exited with 0 +++ [pid 4051] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4051, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4054 ./strace-static-x86_64: Process 4054 attached [pid 4054] set_robust_list(0x5555564465e0, 24) = 0 [pid 4054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4054] setpgid(0, 0) = 0 [pid 4054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4054] write(3, "1000", 4) = 4 [pid 4054] close(3) = 0 [pid 4054] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4054] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4054] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4055 attached , parent_tid=[4055], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4055 [pid 4055] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4055] <... futex resumed>) = 0 [pid 4055] mkdir("./file0", 000 [pid 4054] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4055] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4054] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4055] <... futex resumed>) = 0 [pid 4055] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4054] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4055] <... mount resumed>) = 0 [pid 4055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4054] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4055] <... futex resumed>) = 0 [pid 4055] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4054] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4055] <... mount resumed>) = 0 [pid 4055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4054] <... futex resumed>) = 0 [pid 4054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4055] <... futex resumed>) = 0 [pid 4055] umount2("./file0", MNT_DETACH [pid 4054] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4055] <... umount2 resumed>) = 0 [pid 4055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4054] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4054] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4056 attached , parent_tid=[4056], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4056 [pid 4054] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4054] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4056] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4056] umount2("./file0", MNT_DETACH) = 0 [pid 4056] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4054] <... futex resumed>) = 0 [pid 4054] exit_group(0) = ? [pid 4055] <... futex resumed>) = ? [pid 4055] +++ exited with 0 +++ [pid 4056] +++ exited with 0 +++ [pid 4054] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4054, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4057 attached , child_tidptr=0x5555564465d0) = 4057 [pid 4057] set_robust_list(0x5555564465e0, 24) = 0 [pid 4057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4057] setpgid(0, 0) = 0 [pid 4057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4057] write(3, "1000", 4) = 4 [pid 4057] close(3) = 0 [pid 4057] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4057] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4057] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4057] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4058 attached , parent_tid=[4058], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4058 [pid 4058] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4058] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4058] <... futex resumed>) = 0 [pid 4058] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4058] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4058] <... futex resumed>) = 0 [pid 4058] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4057] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4058] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4058] <... futex resumed>) = 0 [pid 4058] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4057] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4058] <... mount resumed>) = 0 [pid 4058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4058] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] <... futex resumed>) = 0 [pid 4057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4058] <... futex resumed>) = 0 [pid 4058] umount2("./file0", MNT_DETACH) = 0 [pid 4057] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4058] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] <... futex resumed>) = 0 [pid 4057] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4057] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4057] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4059 attached , parent_tid=[4059], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4059 [pid 4059] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4059] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4059] <... futex resumed>) = 0 [pid 4059] umount2("./file0", MNT_DETACH) = 0 [pid 4059] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4059] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4057] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4057] exit_group(0 [pid 4058] <... futex resumed>) = ? [pid 4057] <... exit_group resumed>) = ? [pid 4058] +++ exited with 0 +++ [pid 4059] <... futex resumed>) = ? [pid 4059] +++ exited with 0 +++ [pid 4057] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4057, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4060 ./strace-static-x86_64: Process 4060 attached [pid 4060] set_robust_list(0x5555564465e0, 24) = 0 [pid 4060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4060] setpgid(0, 0) = 0 [pid 4060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4060] write(3, "1000", 4) = 4 [pid 4060] close(3) = 0 [pid 4060] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4060] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4060] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4061], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4061 [pid 4060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4060] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4061 attached [pid 4061] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4061] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4060] <... futex resumed>) = 0 [pid 4060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4061] <... futex resumed>) = 0 [pid 4060] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4061] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4060] <... futex resumed>) = 0 [pid 4060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4061] <... futex resumed>) = 0 [pid 4061] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4060] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4061] <... mount resumed>) = 0 [pid 4061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4060] <... futex resumed>) = 0 [pid 4060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4060] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4060] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4061] umount2("./file0", MNT_DETACH [pid 4060] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4061] <... umount2 resumed>) = 0 [pid 4060] <... clone resumed>, parent_tid=[4062], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4062 ./strace-static-x86_64: Process 4062 attached [pid 4061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4060] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4060] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4062] set_robust_list(0x7fc84e07e9e0, 24 [pid 4061] <... futex resumed>) = 0 [pid 4062] <... set_robust_list resumed>) = 0 [pid 4061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4062] umount2("./file0", MNT_DETACH) = 0 [pid 4062] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4060] <... futex resumed>) = 0 [pid 4062] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4060] exit_group(0) = ? [pid 4062] <... futex resumed>) = ? [pid 4061] <... futex resumed>) = ? [pid 4061] +++ exited with 0 +++ [pid 4062] +++ exited with 0 +++ [pid 4060] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4060, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4063 ./strace-static-x86_64: Process 4063 attached [pid 4063] set_robust_list(0x5555564465e0, 24) = 0 [pid 4063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4063] setpgid(0, 0) = 0 [pid 4063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4063] write(3, "1000", 4) = 4 [pid 4063] close(3) = 0 [pid 4063] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4063] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4063] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4064 attached [pid 4064] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4064] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4063] <... clone resumed>, parent_tid=[4064], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4064 [pid 4063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4064] <... futex resumed>) = 0 [pid 4064] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4064] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4063] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4064] <... futex resumed>) = 0 [pid 4064] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4063] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4064] <... mount resumed>) = 0 [pid 4064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4064] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4063] <... futex resumed>) = 0 [pid 4063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4064] <... futex resumed>) = 0 [pid 4064] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4063] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4064] <... mount resumed>) = 0 [pid 4064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4063] <... futex resumed>) = 0 [pid 4063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4064] umount2("./file0", MNT_DETACH [pid 4063] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4063] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4063] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4065], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4065 ./strace-static-x86_64: Process 4065 attached [pid 4064] <... umount2 resumed>) = 0 [pid 4063] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4063] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4065] set_robust_list(0x7fc84e07e9e0, 24 [pid 4064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4065] <... set_robust_list resumed>) = 0 [pid 4064] <... futex resumed>) = 0 [pid 4065] umount2("./file0", MNT_DETACH [pid 4064] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4065] <... umount2 resumed>) = 0 [pid 4065] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4063] <... futex resumed>) = 0 [pid 4063] exit_group(0) = ? [pid 4064] <... futex resumed>) = ? [pid 4064] +++ exited with 0 +++ [pid 4065] +++ exited with 0 +++ [pid 4063] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4063, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4066 ./strace-static-x86_64: Process 4066 attached [pid 4066] set_robust_list(0x5555564465e0, 24) = 0 [pid 4066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4066] setpgid(0, 0) = 0 [pid 4066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4066] write(3, "1000", 4) = 4 [pid 4066] close(3) = 0 [pid 4066] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4066] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4066] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4067 attached , parent_tid=[4067], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4067 [pid 4067] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4067] <... futex resumed>) = 0 [pid 4067] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4067] <... futex resumed>) = 0 [pid 4067] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4066] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4067] <... futex resumed>) = 0 [pid 4067] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4066] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4067] <... mount resumed>) = 0 [pid 4067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4067] <... futex resumed>) = 0 [pid 4067] umount2("./file0", MNT_DETACH) = 0 [pid 4066] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] <... futex resumed>) = 0 [pid 4066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4066] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4066] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4068 attached , parent_tid=[4068], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4068 [pid 4068] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4068] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4068] <... futex resumed>) = 0 [pid 4068] umount2("./file0", MNT_DETACH) = 0 [pid 4066] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4068] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4068] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4066] exit_group(0 [pid 4067] <... futex resumed>) = ? [pid 4066] <... exit_group resumed>) = ? [pid 4067] +++ exited with 0 +++ [pid 4068] <... futex resumed>) = ? [pid 4068] +++ exited with 0 +++ [pid 4066] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4066, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4069 ./strace-static-x86_64: Process 4069 attached [pid 4069] set_robust_list(0x5555564465e0, 24) = 0 [pid 4069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4069] setpgid(0, 0) = 0 [pid 4069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4069] write(3, "1000", 4) = 4 [pid 4069] close(3) = 0 [pid 4069] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4069] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4069] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4069] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4070 attached , parent_tid=[4070], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4070 [pid 4070] set_robust_list(0x7fc84e09f9e0, 24 [pid 4069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4070] <... set_robust_list resumed>) = 0 [pid 4069] <... futex resumed>) = 0 [pid 4069] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4070] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4069] <... futex resumed>) = 0 [pid 4070] <... futex resumed>) = 1 [pid 4070] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4069] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4070] <... mount resumed>) = 0 [pid 4070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4069] <... futex resumed>) = 0 [pid 4070] <... futex resumed>) = 1 [pid 4069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4070] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4069] <... futex resumed>) = 0 [pid 4069] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4070] <... mount resumed>) = 0 [pid 4070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4069] <... futex resumed>) = 0 [pid 4070] <... futex resumed>) = 1 [pid 4069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4070] umount2("./file0", MNT_DETACH [pid 4069] <... futex resumed>) = 0 [pid 4069] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4069] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4069] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4069] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4071 attached [pid 4070] <... umount2 resumed>) = 0 [pid 4069] <... clone resumed>, parent_tid=[4071], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4071 [pid 4071] set_robust_list(0x7fc84e07e9e0, 24 [pid 4070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4071] <... set_robust_list resumed>) = 0 [pid 4069] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4070] <... futex resumed>) = 0 [pid 4071] umount2("./file0", MNT_DETACH [pid 4070] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4069] <... futex resumed>) = 0 [pid 4069] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4071] <... umount2 resumed>) = 0 [pid 4071] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4069] <... futex resumed>) = 0 [pid 4071] <... futex resumed>) = 1 [pid 4069] exit_group(0 [pid 4071] ????( [pid 4069] <... exit_group resumed>) = ? [pid 4070] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4071] <... ???? resumed>) = ? [pid 4070] +++ exited with 0 +++ [pid 4071] +++ exited with 0 +++ [pid 4069] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4069, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4072 ./strace-static-x86_64: Process 4072 attached [pid 4072] set_robust_list(0x5555564465e0, 24) = 0 [pid 4072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4072] setpgid(0, 0) = 0 [pid 4072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4072] write(3, "1000", 4) = 4 [pid 4072] close(3) = 0 [pid 4072] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4072] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4072] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4073], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4073 [pid 4072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4072] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4073 attached [pid 4073] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4073] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4072] <... futex resumed>) = 0 [pid 4072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4072] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4073] <... futex resumed>) = 1 [pid 4073] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4072] <... futex resumed>) = 0 [pid 4073] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4072] <... futex resumed>) = 0 [pid 4073] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4072] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4073] <... mount resumed>) = 0 [pid 4073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4072] <... futex resumed>) = 0 [pid 4072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4072] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4072] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4072] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4074 attached [pid 4074] set_robust_list(0x7fc84e07e9e0, 24 [pid 4072] <... clone resumed>, parent_tid=[4074], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4074 [pid 4074] <... set_robust_list resumed>) = 0 [pid 4072] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4074] umount2("./file0", MNT_DETACH [pid 4072] <... futex resumed>) = 0 [pid 4072] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4074] <... umount2 resumed>) = 0 [pid 4073] umount2("./file0", MNT_DETACH [pid 4074] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4072] <... futex resumed>) = 0 [pid 4074] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4073] <... umount2 resumed>) = 0 [pid 4073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4073] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4072] exit_group(0) = ? [pid 4073] <... futex resumed>) = ? [pid 4074] <... futex resumed>) = ? [pid 4073] +++ exited with 0 +++ [pid 4074] +++ exited with 0 +++ [pid 4072] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4072, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4075 ./strace-static-x86_64: Process 4075 attached [pid 4075] set_robust_list(0x5555564465e0, 24) = 0 [pid 4075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4075] setpgid(0, 0) = 0 [pid 4075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4075] write(3, "1000", 4) = 4 [pid 4075] close(3) = 0 [pid 4075] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4075] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4075] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4075] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4076 attached [pid 4076] set_robust_list(0x7fc84e09f9e0, 24 [pid 4075] <... clone resumed>, parent_tid=[4076], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4076 [pid 4076] <... set_robust_list resumed>) = 0 [pid 4075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4075] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4076] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4075] <... futex resumed>) = 0 [pid 4076] <... futex resumed>) = 1 [pid 4075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4076] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4075] <... futex resumed>) = 0 [pid 4075] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4076] <... mount resumed>) = 0 [pid 4076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4075] <... futex resumed>) = 0 [pid 4076] <... futex resumed>) = 1 [pid 4075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4076] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4075] <... futex resumed>) = 0 [pid 4075] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4076] <... mount resumed>) = 0 [pid 4076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4075] <... futex resumed>) = 0 [pid 4075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4075] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4076] umount2("./file0", MNT_DETACH [pid 4075] <... futex resumed>) = 0 [pid 4075] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4075] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4075] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4077 attached [pid 4076] <... umount2 resumed>) = 0 [pid 4077] set_robust_list(0x7fc84e07e9e0, 24 [pid 4076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4075] <... clone resumed>, parent_tid=[4077], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4077 [pid 4077] <... set_robust_list resumed>) = 0 [pid 4076] <... futex resumed>) = 0 [pid 4075] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4077] umount2("./file0", MNT_DETACH [pid 4076] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4075] <... futex resumed>) = 0 [pid 4075] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4077] <... umount2 resumed>) = 0 [pid 4077] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4075] <... futex resumed>) = 0 [pid 4075] exit_group(0) = ? [pid 4076] <... futex resumed>) = ? [pid 4076] +++ exited with 0 +++ [pid 4077] +++ exited with 0 +++ [pid 4075] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4075, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4078 attached , child_tidptr=0x5555564465d0) = 4078 [pid 4078] set_robust_list(0x5555564465e0, 24) = 0 [pid 4078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4078] setpgid(0, 0) = 0 [pid 4078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4078] write(3, "1000", 4) = 4 [pid 4078] close(3) = 0 [pid 4078] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4078] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4078] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4079], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4079 ./strace-static-x86_64: Process 4079 attached [pid 4079] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4079] <... futex resumed>) = 0 [pid 4079] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4079] <... futex resumed>) = 0 [pid 4079] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4078] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4079] <... futex resumed>) = 0 [pid 4079] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4078] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4079] <... mount resumed>) = 0 [pid 4079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4079] <... futex resumed>) = 0 [pid 4079] umount2("./file0", MNT_DETACH [pid 4078] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4079] <... umount2 resumed>) = 0 [pid 4079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] <... futex resumed>) = 0 [pid 4078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4078] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4078] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4080 attached [pid 4080] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4080] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] <... clone resumed>, parent_tid=[4080], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4080 [pid 4078] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4080] <... futex resumed>) = 0 [pid 4080] umount2("./file0", MNT_DETACH [pid 4078] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4080] <... umount2 resumed>) = 0 [pid 4080] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4080] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4078] exit_group(0 [pid 4079] <... futex resumed>) = ? [pid 4078] <... exit_group resumed>) = ? [pid 4079] +++ exited with 0 +++ [pid 4080] <... futex resumed>) = ? [pid 4080] +++ exited with 0 +++ [pid 4078] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4078, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4081 ./strace-static-x86_64: Process 4081 attached [pid 4081] set_robust_list(0x5555564465e0, 24) = 0 [pid 4081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4081] setpgid(0, 0) = 0 [pid 4081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4081] write(3, "1000", 4) = 4 [pid 4081] close(3) = 0 [pid 4081] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4081] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4081] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4081] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4082 attached , parent_tid=[4082], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4082 [pid 4082] set_robust_list(0x7fc84e09f9e0, 24 [pid 4081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4082] <... set_robust_list resumed>) = 0 [pid 4082] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4082] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4081] <... futex resumed>) = 1 [pid 4081] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4081] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4082] <... futex resumed>) = 0 [pid 4082] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4081] <... futex resumed>) = 0 [pid 4082] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4082] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4081] <... futex resumed>) = 0 [pid 4082] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4081] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4082] <... mount resumed>) = 0 [pid 4082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4082] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4081] <... futex resumed>) = 0 [pid 4081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4082] <... futex resumed>) = 0 [pid 4081] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4082] umount2("./file0", MNT_DETACH [pid 4081] <... futex resumed>) = 0 [pid 4081] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4081] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4082] <... umount2 resumed>) = 0 [pid 4081] <... mprotect resumed>) = 0 [pid 4082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4081] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4082] <... futex resumed>) = 0 [pid 4082] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4083 attached [pid 4081] <... clone resumed>, parent_tid=[4083], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4083 [pid 4083] set_robust_list(0x7fc84e07e9e0, 24 [pid 4081] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4083] <... set_robust_list resumed>) = 0 [pid 4081] <... futex resumed>) = 0 [pid 4083] umount2("./file0", MNT_DETACH [pid 4081] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4083] <... umount2 resumed>) = 0 [pid 4083] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4081] <... futex resumed>) = 0 [pid 4083] <... futex resumed>) = 1 [pid 4083] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4081] exit_group(0) = ? [pid 4082] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4083] <... futex resumed>) = ? [pid 4082] +++ exited with 0 +++ [pid 4083] +++ exited with 0 +++ [pid 4081] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4081, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4084 ./strace-static-x86_64: Process 4084 attached [pid 4084] set_robust_list(0x5555564465e0, 24) = 0 [pid 4084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4084] setpgid(0, 0) = 0 [pid 4084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4084] write(3, "1000", 4) = 4 [pid 4084] close(3) = 0 [pid 4084] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4084] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4084] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4085 attached [pid 4085] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4084] <... clone resumed>, parent_tid=[4085], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4085 [pid 4084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4085] <... futex resumed>) = 0 [pid 4084] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4085] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4084] <... futex resumed>) = 0 [pid 4084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4085] <... futex resumed>) = 0 [pid 4085] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4084] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4085] <... mount resumed>) = 0 [pid 4085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4084] <... futex resumed>) = 0 [pid 4085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4085] <... futex resumed>) = 0 [pid 4084] <... futex resumed>) = 1 [pid 4085] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4084] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4085] <... mount resumed>) = 0 [pid 4085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4084] <... futex resumed>) = 0 [pid 4084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4084] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4085] <... futex resumed>) = 0 [pid 4084] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4085] umount2("./file0", MNT_DETACH [pid 4084] <... mprotect resumed>) = 0 [pid 4084] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4085] <... umount2 resumed>) = 0 [pid 4084] <... clone resumed>, parent_tid=[4086], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4086 [pid 4084] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4084] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4086 attached [pid 4086] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4086] umount2("./file0", MNT_DETACH [pid 4085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4086] <... umount2 resumed>) = 0 [pid 4086] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4084] <... futex resumed>) = 0 [pid 4084] exit_group(0) = ? [pid 4085] <... futex resumed>) = ? [pid 4086] <... futex resumed>) = ? [pid 4085] +++ exited with 0 +++ [pid 4086] +++ exited with 0 +++ [pid 4084] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4084, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4087 attached , child_tidptr=0x5555564465d0) = 4087 [pid 4087] set_robust_list(0x5555564465e0, 24) = 0 [pid 4087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4087] setpgid(0, 0) = 0 [pid 4087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4087] write(3, "1000", 4) = 4 [pid 4087] close(3) = 0 [pid 4087] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4087] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4087] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4087] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4088 attached [pid 4088] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] <... clone resumed>, parent_tid=[4088], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4088 [pid 4087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4088] <... futex resumed>) = 0 [pid 4088] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4088] <... futex resumed>) = 0 [pid 4088] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4087] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4088] <... mount resumed>) = 0 [pid 4088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4088] <... futex resumed>) = 0 [pid 4088] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4087] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4088] <... mount resumed>) = 0 [pid 4088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4088] <... futex resumed>) = 0 [pid 4088] umount2("./file0", MNT_DETACH [pid 4087] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4088] <... umount2 resumed>) = 0 [pid 4087] <... futex resumed>) = 0 [pid 4088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4087] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4087] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4089 attached [pid 4089] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4089] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] <... clone resumed>, parent_tid=[4089], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4089 [pid 4087] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4089] <... futex resumed>) = 0 [pid 4089] umount2("./file0", MNT_DETACH [pid 4087] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4089] <... umount2 resumed>) = 0 [pid 4089] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4089] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4087] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4087] exit_group(0 [pid 4088] <... futex resumed>) = ? [pid 4087] <... exit_group resumed>) = ? [pid 4088] +++ exited with 0 +++ [pid 4089] <... futex resumed>) = ? [pid 4089] +++ exited with 0 +++ [pid 4087] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4087, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4090 ./strace-static-x86_64: Process 4090 attached [pid 4090] set_robust_list(0x5555564465e0, 24) = 0 [pid 4090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4090] setpgid(0, 0) = 0 [pid 4090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4090] write(3, "1000", 4) = 4 [pid 4090] close(3) = 0 [pid 4090] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4090] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4090] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4091], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4091 [pid 4090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4090] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4091 attached [pid 4091] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4091] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4090] <... futex resumed>) = 0 [pid 4090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4090] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4091] <... futex resumed>) = 1 [pid 4091] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4090] <... futex resumed>) = 0 [pid 4090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4090] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4091] <... futex resumed>) = 1 [pid 4091] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4090] <... futex resumed>) = 0 [pid 4090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4090] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4090] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4090] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4092], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4092 [pid 4091] <... futex resumed>) = 1 [pid 4090] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4091] umount2("./file0", MNT_DETACH [pid 4090] <... futex resumed>) = 0 [pid 4090] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4092 attached [pid 4092] set_robust_list(0x7fc84e07e9e0, 24 [pid 4091] <... umount2 resumed>) = 0 [pid 4091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4091] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4092] <... set_robust_list resumed>) = 0 [pid 4092] umount2("./file0", MNT_DETACH) = 0 [pid 4092] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4090] <... futex resumed>) = 0 [pid 4092] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4090] exit_group(0) = ? [pid 4091] <... futex resumed>) = ? [pid 4091] +++ exited with 0 +++ [pid 4092] <... futex resumed>) = ? [pid 4092] +++ exited with 0 +++ [pid 4090] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4090, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4093 ./strace-static-x86_64: Process 4093 attached [pid 4093] set_robust_list(0x5555564465e0, 24) = 0 [pid 4093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4093] setpgid(0, 0) = 0 [pid 4093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4093] write(3, "1000", 4) = 4 [pid 4093] close(3) = 0 [pid 4093] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4093] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4093] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4093] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4094], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4094 [pid 4093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4093] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4094 attached [pid 4094] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4094] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4093] <... futex resumed>) = 0 [pid 4093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4093] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4094] <... futex resumed>) = 1 [pid 4094] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4093] <... futex resumed>) = 0 [pid 4094] <... futex resumed>) = 1 [pid 4093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4094] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4093] <... futex resumed>) = 0 [pid 4093] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4094] <... mount resumed>) = 0 [pid 4094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4093] <... futex resumed>) = 0 [pid 4094] <... futex resumed>) = 1 [pid 4093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4094] umount2("./file0", MNT_DETACH [pid 4093] <... futex resumed>) = 0 [pid 4093] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4093] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4093] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4094] <... umount2 resumed>) = 0 [pid 4094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4093] <... mprotect resumed>) = 0 [pid 4094] <... futex resumed>) = 0 [pid 4093] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4094] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4095 attached [pid 4093] <... clone resumed>, parent_tid=[4095], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4095 [pid 4093] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4093] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4095] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4095] umount2("./file0", MNT_DETACH) = 0 [pid 4095] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4093] <... futex resumed>) = 0 [pid 4095] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4093] exit_group(0 [pid 4094] <... futex resumed>) = ? [pid 4093] <... exit_group resumed>) = ? [pid 4095] <... futex resumed>) = 231 [pid 4094] +++ exited with 0 +++ [pid 4095] +++ exited with 0 +++ [pid 4093] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4093, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4096 ./strace-static-x86_64: Process 4096 attached [pid 4096] set_robust_list(0x5555564465e0, 24) = 0 [pid 4096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4096] setpgid(0, 0) = 0 [pid 4096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4096] write(3, "1000", 4) = 4 [pid 4096] close(3) = 0 [pid 4096] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4096] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4096] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4097], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4097 [pid 4096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4096] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4097 attached [pid 4097] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4097] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4096] <... futex resumed>) = 0 [pid 4097] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4096] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4097] <... mount resumed>) = 0 [pid 4097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4096] <... futex resumed>) = 0 [pid 4097] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4096] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4097] <... mount resumed>) = 0 [pid 4097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4096] <... futex resumed>) = 0 [pid 4097] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4097] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4096] <... futex resumed>) = 0 [pid 4097] umount2("./file0", MNT_DETACH [pid 4096] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4096] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4096] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4097] <... umount2 resumed>) = 0 [pid 4096] <... clone resumed>, parent_tid=[4098], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4098 [pid 4097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4096] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4097] <... futex resumed>) = 0 [pid 4096] <... futex resumed>) = 0 [pid 4097] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4096] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4098 attached [pid 4098] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4098] umount2("./file0", MNT_DETACH) = 0 [pid 4098] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4096] <... futex resumed>) = 0 [pid 4098] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4096] exit_group(0) = ? [pid 4097] <... futex resumed>) = ? [pid 4097] +++ exited with 0 +++ [pid 4098] <... futex resumed>) = ? [pid 4098] +++ exited with 0 +++ [pid 4096] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4096, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4099 attached , child_tidptr=0x5555564465d0) = 4099 [pid 4099] set_robust_list(0x5555564465e0, 24) = 0 [pid 4099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4099] setpgid(0, 0) = 0 [pid 4099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4099] write(3, "1000", 4) = 4 [pid 4099] close(3) = 0 [pid 4099] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4099] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4099] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4100 attached , parent_tid=[4100], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4100 [pid 4100] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4100] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4100] <... futex resumed>) = 0 [pid 4100] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4100] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4100] <... futex resumed>) = 0 [pid 4100] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4099] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4100] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4100] <... futex resumed>) = 0 [pid 4100] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4099] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4100] <... mount resumed>) = 0 [pid 4100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4100] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] <... futex resumed>) = 0 [pid 4099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4100] <... futex resumed>) = 0 [pid 4100] umount2("./file0", MNT_DETACH) = 0 [pid 4099] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4100] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] <... futex resumed>) = 0 [pid 4099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4099] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4099] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4101 attached , parent_tid=[4101], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4101 [pid 4101] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4101] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4101] <... futex resumed>) = 0 [pid 4101] umount2("./file0", MNT_DETACH) = 0 [pid 4099] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4101] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4101] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4099] exit_group(0 [pid 4100] <... futex resumed>) = ? [pid 4099] <... exit_group resumed>) = ? [pid 4100] +++ exited with 0 +++ [pid 4101] <... futex resumed>) = ? [pid 4101] +++ exited with 0 +++ [pid 4099] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4099, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4102 ./strace-static-x86_64: Process 4102 attached [pid 4102] set_robust_list(0x5555564465e0, 24) = 0 [pid 4102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4102] setpgid(0, 0) = 0 [pid 4102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4102] write(3, "1000", 4) = 4 [pid 4102] close(3) = 0 [pid 4102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4102] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4102] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4103], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4103 [pid 4102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4103 attached [pid 4103] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4103] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4102] <... futex resumed>) = 0 [pid 4102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4103] <... futex resumed>) = 1 [pid 4103] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4102] <... futex resumed>) = 0 [pid 4102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4103] <... futex resumed>) = 1 [pid 4103] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4102] <... futex resumed>) = 0 [pid 4102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4103] umount2("./file0", MNT_DETACH [pid 4102] <... mmap resumed>) = 0x7fc84e05e000 [pid 4102] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4103] <... umount2 resumed>) = 0 [pid 4102] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4102] <... clone resumed>, parent_tid=[4104], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4104 [pid 4102] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4102] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4103] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4104 attached [pid 4104] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4104] umount2("./file0", MNT_DETACH [pid 4103] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4104] <... umount2 resumed>) = 0 [pid 4104] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4102] <... futex resumed>) = 0 [pid 4102] exit_group(0 [pid 4104] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4102] <... exit_group resumed>) = ? [pid 4103] <... futex resumed>) = ? [pid 4103] +++ exited with 0 +++ [pid 4104] +++ exited with 0 +++ [pid 4102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4102, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4105 ./strace-static-x86_64: Process 4105 attached [pid 4105] set_robust_list(0x5555564465e0, 24) = 0 [pid 4105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4105] setpgid(0, 0) = 0 [pid 4105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4105] write(3, "1000", 4) = 4 [pid 4105] close(3) = 0 [pid 4105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4105] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4105] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4106 attached , parent_tid=[4106], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4106 [pid 4106] set_robust_list(0x7fc84e09f9e0, 24 [pid 4105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4106] <... set_robust_list resumed>) = 0 [pid 4105] <... futex resumed>) = 0 [pid 4105] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4106] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4105] <... futex resumed>) = 0 [pid 4106] <... futex resumed>) = 1 [pid 4105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4106] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4105] <... futex resumed>) = 0 [pid 4105] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4106] <... mount resumed>) = 0 [pid 4106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4105] <... futex resumed>) = 0 [pid 4105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4105] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4106] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4105] <... futex resumed>) = 0 [pid 4105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4105] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4106] umount2("./file0", MNT_DETACH [pid 4105] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4105] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4106] <... umount2 resumed>) = 0 [pid 4105] <... clone resumed>, parent_tid=[4107], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4107 [pid 4105] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4105] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4107 attached [pid 4107] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4107] umount2("./file0", MNT_DETACH [pid 4106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4107] <... umount2 resumed>) = 0 [pid 4107] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4106] <... futex resumed>) = 0 [pid 4106] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4105] <... futex resumed>) = 0 [pid 4105] exit_group(0) = ? [pid 4106] <... futex resumed>) = ? [pid 4107] <... futex resumed>) = ? [pid 4107] +++ exited with 0 +++ [pid 4106] +++ exited with 0 +++ [pid 4105] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4108 ./strace-static-x86_64: Process 4108 attached [pid 4108] set_robust_list(0x5555564465e0, 24) = 0 [pid 4108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4108] setpgid(0, 0) = 0 [pid 4108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4108] write(3, "1000", 4) = 4 [pid 4108] close(3) = 0 [pid 4108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4108] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4108] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4109 attached [pid 4109] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4109] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4108] <... clone resumed>, parent_tid=[4109], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4109 [pid 4108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4109] <... futex resumed>) = 0 [pid 4109] mkdir("./file0", 000 [pid 4108] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4109] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4109] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4108] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4108] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4109] <... futex resumed>) = 0 [pid 4109] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4108] <... futex resumed>) = 0 [pid 4109] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4108] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4109] <... mount resumed>) = 0 [pid 4109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4108] <... futex resumed>) = 0 [pid 4109] <... futex resumed>) = 1 [pid 4108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4109] umount2("./file0", MNT_DETACH [pid 4108] <... futex resumed>) = 0 [pid 4108] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4108] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4108] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4109] <... umount2 resumed>) = 0 [pid 4109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4108] <... clone resumed>, parent_tid=[4110], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4110 [pid 4109] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4108] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4110 attached ) = 0 [pid 4108] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4110] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4110] umount2("./file0", MNT_DETACH) = 0 [pid 4110] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4108] <... futex resumed>) = 0 [pid 4110] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4108] exit_group(0) = ? [pid 4109] <... futex resumed>) = ? [pid 4109] +++ exited with 0 +++ [pid 4110] <... futex resumed>) = ? [pid 4110] +++ exited with 0 +++ [pid 4108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4108, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4111 ./strace-static-x86_64: Process 4111 attached [pid 4111] set_robust_list(0x5555564465e0, 24) = 0 [pid 4111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4111] setpgid(0, 0) = 0 [pid 4111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4111] write(3, "1000", 4) = 4 [pid 4111] close(3) = 0 [pid 4111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4111] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4111] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4111] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4112 attached , parent_tid=[4112], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4112 [pid 4112] set_robust_list(0x7fc84e09f9e0, 24 [pid 4111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4112] <... set_robust_list resumed>) = 0 [pid 4112] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4112] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4111] <... futex resumed>) = 1 [pid 4112] <... futex resumed>) = 0 [pid 4112] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4111] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4112] <... futex resumed>) = 0 [pid 4112] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4112] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4111] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4112] <... futex resumed>) = 0 [pid 4111] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4112] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4112] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4111] <... futex resumed>) = 0 [pid 4111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4112] <... futex resumed>) = 0 [pid 4111] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4112] umount2("./file0", MNT_DETACH [pid 4111] <... futex resumed>) = 0 [pid 4111] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4111] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4111] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4113 attached , parent_tid=[4113], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4113 [pid 4113] set_robust_list(0x7fc84e07e9e0, 24 [pid 4111] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4113] <... set_robust_list resumed>) = 0 [pid 4111] <... futex resumed>) = 0 [pid 4113] umount2("./file0", MNT_DETACH [pid 4111] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4113] <... umount2 resumed>) = 0 [pid 4113] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4111] <... futex resumed>) = 0 [pid 4113] <... futex resumed>) = 1 [pid 4113] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4112] <... umount2 resumed>) = 0 [pid 4112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4112] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4111] exit_group(0) = ? [pid 4113] <... futex resumed>) = 231 [pid 4112] <... futex resumed>) = ? [pid 4113] +++ exited with 0 +++ [pid 4112] +++ exited with 0 +++ [pid 4111] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4111, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4114 ./strace-static-x86_64: Process 4114 attached [pid 4114] set_robust_list(0x5555564465e0, 24) = 0 [pid 4114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4114] setpgid(0, 0) = 0 [pid 4114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4114] write(3, "1000", 4) = 4 [pid 4114] close(3) = 0 [pid 4114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4114] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4114] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4115 attached [pid 4115] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4115] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4114] <... clone resumed>, parent_tid=[4115], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4115 [pid 4114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4115] <... futex resumed>) = 0 [pid 4114] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4115] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4114] <... futex resumed>) = 0 [pid 4114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4114] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4115] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4114] <... futex resumed>) = 0 [pid 4114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4114] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4115] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4114] <... futex resumed>) = 0 [pid 4114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4114] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4114] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4114] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4115] umount2("./file0", MNT_DETACH [pid 4114] <... clone resumed>, parent_tid=[4116], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4116 [pid 4114] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4114] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4116 attached [pid 4116] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4116] umount2("./file0", MNT_DETACH [pid 4115] <... umount2 resumed>) = 0 [pid 4115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4115] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4116] <... umount2 resumed>) = 0 [pid 4116] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4114] <... futex resumed>) = 0 [pid 4114] exit_group(0) = ? [pid 4116] <... futex resumed>) = ? [pid 4116] +++ exited with 0 +++ [pid 4115] <... futex resumed>) = ? [pid 4115] +++ exited with 0 +++ [pid 4114] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4114, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4117 ./strace-static-x86_64: Process 4117 attached [pid 4117] set_robust_list(0x5555564465e0, 24) = 0 [pid 4117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4117] setpgid(0, 0) = 0 [pid 4117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4117] write(3, "1000", 4) = 4 [pid 4117] close(3) = 0 [pid 4117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4117] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4117] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4118], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4118 [pid 4117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4118 attached [pid 4118] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4118] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4117] <... futex resumed>) = 0 [pid 4117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4118] <... futex resumed>) = 1 [pid 4118] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4117] <... futex resumed>) = 0 [pid 4117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4118] <... futex resumed>) = 1 [pid 4118] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4117] <... futex resumed>) = 0 [pid 4117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4117] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4117] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4119 attached , parent_tid=[4119], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4119 [pid 4117] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4117] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4118] <... futex resumed>) = 1 [pid 4118] umount2("./file0", MNT_DETACH [pid 4119] set_robust_list(0x7fc84e07e9e0, 24 [pid 4118] <... umount2 resumed>) = 0 [pid 4118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4118] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4119] <... set_robust_list resumed>) = 0 [pid 4119] umount2("./file0", MNT_DETACH) = 0 [pid 4119] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4117] <... futex resumed>) = 0 [pid 4117] exit_group(0) = ? [pid 4118] <... futex resumed>) = ? [pid 4118] +++ exited with 0 +++ [pid 4119] +++ exited with 0 +++ [pid 4117] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4117, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4120 attached , child_tidptr=0x5555564465d0) = 4120 [pid 4120] set_robust_list(0x5555564465e0, 24) = 0 [pid 4120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4120] setpgid(0, 0) = 0 [pid 4120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4120] write(3, "1000", 4) = 4 [pid 4120] close(3) = 0 [pid 4120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4120] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4120] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4121 attached [pid 4121] set_robust_list(0x7fc84e09f9e0, 24 [pid 4120] <... clone resumed>, parent_tid=[4121], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4121 [pid 4120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4121] <... set_robust_list resumed>) = 0 [pid 4121] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4120] <... futex resumed>) = 0 [pid 4120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4121] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4120] <... futex resumed>) = 0 [pid 4120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4121] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4120] <... futex resumed>) = 0 [pid 4121] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4120] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4120] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4122], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4122 [pid 4120] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4120] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4122 attached [pid 4122] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4122] umount2("./file0", MNT_DETACH [pid 4121] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4122] <... umount2 resumed>) = 0 [pid 4122] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4120] <... futex resumed>) = 0 [pid 4122] <... futex resumed>) = 1 [pid 4121] umount2("./file0", MNT_DETACH [pid 4122] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4121] <... umount2 resumed>) = 0 [pid 4121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4121] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4120] exit_group(0) = ? [pid 4121] <... futex resumed>) = ? [pid 4121] +++ exited with 0 +++ [pid 4122] <... futex resumed>) = ? [pid 4122] +++ exited with 0 +++ [pid 4120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4120, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4123 ./strace-static-x86_64: Process 4123 attached [pid 4123] set_robust_list(0x5555564465e0, 24) = 0 [pid 4123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4123] setpgid(0, 0) = 0 [pid 4123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4123] write(3, "1000", 4) = 4 [pid 4123] close(3) = 0 [pid 4123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4123] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4123] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4123] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4124 attached , parent_tid=[4124], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4124 [pid 4124] set_robust_list(0x7fc84e09f9e0, 24 [pid 4123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4124] <... set_robust_list resumed>) = 0 [pid 4123] <... futex resumed>) = 0 [pid 4123] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4124] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4123] <... futex resumed>) = 0 [pid 4124] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4124] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4123] <... futex resumed>) = 0 [pid 4124] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4123] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4124] <... mount resumed>) = 0 [pid 4124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4123] <... futex resumed>) = 0 [pid 4124] <... futex resumed>) = 1 [pid 4124] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4123] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4124] <... mount resumed>) = 0 [pid 4124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4123] <... futex resumed>) = 0 [pid 4123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4124] umount2("./file0", MNT_DETACH [pid 4123] <... futex resumed>) = 0 [pid 4123] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4123] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4123] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4123] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4124] <... umount2 resumed>) = 0 [pid 4123] <... clone resumed>, parent_tid=[4125], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4125 [pid 4123] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4123] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4125 attached [pid 4125] set_robust_list(0x7fc84e07e9e0, 24 [pid 4124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4125] <... set_robust_list resumed>) = 0 [pid 4124] <... futex resumed>) = 0 [pid 4125] umount2("./file0", MNT_DETACH [pid 4124] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4125] <... umount2 resumed>) = 0 [pid 4125] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4123] <... futex resumed>) = 0 [pid 4123] exit_group(0) = ? [pid 4125] <... futex resumed>) = ? [pid 4124] <... futex resumed>) = ? [pid 4125] +++ exited with 0 +++ [pid 4124] +++ exited with 0 +++ [pid 4123] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4123, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4126 attached , child_tidptr=0x5555564465d0) = 4126 [pid 4126] set_robust_list(0x5555564465e0, 24) = 0 [pid 4126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4126] setpgid(0, 0) = 0 [pid 4126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4126] write(3, "1000", 4) = 4 [pid 4126] close(3) = 0 [pid 4126] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4126] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4126] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4127 attached , parent_tid=[4127], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4127 [pid 4127] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4127] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4127] <... futex resumed>) = 0 [pid 4127] mkdir("./file0", 000 [pid 4126] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4127] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4127] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4126] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4127] <... futex resumed>) = 0 [pid 4127] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4126] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4127] <... mount resumed>) = 0 [pid 4127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4126] <... futex resumed>) = 0 [pid 4127] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4126] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4127] <... mount resumed>) = 0 [pid 4127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4126] <... futex resumed>) = 0 [pid 4126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4127] umount2("./file0", MNT_DETACH [pid 4126] <... futex resumed>) = 0 [pid 4126] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4126] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4126] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4127] <... umount2 resumed>) = 0 [pid 4126] <... clone resumed>, parent_tid=[4128], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4128 [pid 4127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4126] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4127] <... futex resumed>) = 0 [pid 4127] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4128 attached [pid 4126] <... futex resumed>) = 0 [pid 4128] set_robust_list(0x7fc84e07e9e0, 24 [pid 4126] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4128] <... set_robust_list resumed>) = 0 [pid 4128] umount2("./file0", MNT_DETACH) = 0 [pid 4128] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4126] <... futex resumed>) = 0 [pid 4128] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4126] exit_group(0) = ? [pid 4127] <... futex resumed>) = 231 [pid 4128] <... futex resumed>) = ? [pid 4127] +++ exited with 0 +++ [pid 4128] +++ exited with 0 +++ [pid 4126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4126, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4129 ./strace-static-x86_64: Process 4129 attached [pid 4129] set_robust_list(0x5555564465e0, 24) = 0 [pid 4129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4129] setpgid(0, 0) = 0 [pid 4129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4129] write(3, "1000", 4) = 4 [pid 4129] close(3) = 0 [pid 4129] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4129] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4129] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4129] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4130 attached , parent_tid=[4130], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4130 [pid 4130] set_robust_list(0x7fc84e09f9e0, 24 [pid 4129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4130] <... set_robust_list resumed>) = 0 [pid 4129] <... futex resumed>) = 0 [pid 4129] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4130] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4129] <... futex resumed>) = 0 [pid 4129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4129] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4130] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4129] <... futex resumed>) = 0 [pid 4130] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4129] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4130] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4129] <... futex resumed>) = 0 [pid 4129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4129] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4129] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4129] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4129] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4130] umount2("./file0", MNT_DETACH [pid 4129] <... clone resumed>, parent_tid=[4131], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4131 [pid 4129] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4129] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4131 attached [pid 4131] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4131] umount2("./file0", MNT_DETACH) = 0 [pid 4130] <... umount2 resumed>) = 0 [pid 4131] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4129] <... futex resumed>) = 0 [pid 4131] <... futex resumed>) = 1 [pid 4130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4131] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4130] <... futex resumed>) = 0 [pid 4130] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4129] exit_group(0) = ? [pid 4131] <... futex resumed>) = 231 [pid 4130] <... futex resumed>) = ? [pid 4131] +++ exited with 0 +++ [pid 4130] +++ exited with 0 +++ [pid 4129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4129, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4132 ./strace-static-x86_64: Process 4132 attached [pid 4132] set_robust_list(0x5555564465e0, 24) = 0 [pid 4132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4132] setpgid(0, 0) = 0 [pid 4132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4132] write(3, "1000", 4) = 4 [pid 4132] close(3) = 0 [pid 4132] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4132] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4132] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4133 attached , parent_tid=[4133], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4133 [pid 4133] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4133] <... futex resumed>) = 0 [pid 4133] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4132] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4133] <... futex resumed>) = 0 [pid 4133] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4132] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4133] <... futex resumed>) = 0 [pid 4133] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4132] <... futex resumed>) = 0 [pid 4132] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4133] <... mount resumed>) = 0 [pid 4133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4133] <... futex resumed>) = 0 [pid 4132] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4133] umount2("./file0", MNT_DETACH [pid 4132] <... futex resumed>) = 0 [pid 4132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4133] <... umount2 resumed>) = 0 [pid 4133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4132] <... mmap resumed>) = 0x7fc84e05e000 [pid 4132] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4132] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4134 attached [pid 4134] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4134] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4132] <... clone resumed>, parent_tid=[4134], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4134 [pid 4132] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4134] <... futex resumed>) = 0 [pid 4132] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4134] umount2("./file0", MNT_DETACH) = 0 [pid 4134] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4132] <... futex resumed>) = 0 [pid 4134] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4132] exit_group(0) = ? [pid 4133] <... futex resumed>) = ? [pid 4133] +++ exited with 0 +++ [pid 4134] <... futex resumed>) = ? [pid 4134] +++ exited with 0 +++ [pid 4132] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4132, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4135 ./strace-static-x86_64: Process 4135 attached [pid 4135] set_robust_list(0x5555564465e0, 24) = 0 [pid 4135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4135] setpgid(0, 0) = 0 [pid 4135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4135] write(3, "1000", 4) = 4 [pid 4135] close(3) = 0 [pid 4135] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4135] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4135] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4135] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4136 attached , parent_tid=[4136], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4136 [pid 4136] set_robust_list(0x7fc84e09f9e0, 24 [pid 4135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4136] <... set_robust_list resumed>) = 0 [pid 4135] <... futex resumed>) = 0 [pid 4135] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4136] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4135] <... futex resumed>) = 0 [pid 4136] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4136] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4135] <... futex resumed>) = 0 [pid 4135] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4136] <... mount resumed>) = 0 [pid 4136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4135] <... futex resumed>) = 0 [pid 4136] <... futex resumed>) = 1 [pid 4135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4136] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4135] <... futex resumed>) = 0 [pid 4135] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4136] <... mount resumed>) = 0 [pid 4136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4135] <... futex resumed>) = 0 [pid 4136] <... futex resumed>) = 1 [pid 4135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4136] umount2("./file0", MNT_DETACH [pid 4135] <... futex resumed>) = 0 [pid 4135] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4135] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4135] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4135] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4137], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4137 [pid 4136] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4137 attached [pid 4135] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4137] set_robust_list(0x7fc84e07e9e0, 24 [pid 4136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4137] <... set_robust_list resumed>) = 0 [pid 4135] <... futex resumed>) = 0 [pid 4137] umount2("./file0", MNT_DETACH [pid 4136] <... futex resumed>) = 0 [pid 4135] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4136] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4137] <... umount2 resumed>) = 0 [pid 4137] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4135] <... futex resumed>) = 0 [pid 4137] <... futex resumed>) = 1 [pid 4135] exit_group(0 [pid 4137] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4136] <... futex resumed>) = ? [pid 4135] <... exit_group resumed>) = ? [pid 4137] <... futex resumed>) = ? [pid 4136] +++ exited with 0 +++ [pid 4137] +++ exited with 0 +++ [pid 4135] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4135, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4138 ./strace-static-x86_64: Process 4138 attached [pid 4138] set_robust_list(0x5555564465e0, 24) = 0 [pid 4138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4138] setpgid(0, 0) = 0 [pid 4138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4138] write(3, "1000", 4) = 4 [pid 4138] close(3) = 0 [pid 4138] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4138] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4138] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4139], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4139 ./strace-static-x86_64: Process 4139 attached [pid 4138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4139] set_robust_list(0x7fc84e09f9e0, 24 [pid 4138] <... futex resumed>) = 0 [pid 4139] <... set_robust_list resumed>) = 0 [pid 4139] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4139] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4138] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4139] <... futex resumed>) = 0 [pid 4138] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4139] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4139] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4138] <... futex resumed>) = 0 [pid 4138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4139] <... futex resumed>) = 0 [pid 4139] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4138] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4139] <... mount resumed>) = 0 [pid 4139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4138] <... futex resumed>) = 0 [pid 4139] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4139] <... futex resumed>) = 0 [pid 4138] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4139] umount2("./file0", MNT_DETACH [pid 4138] <... futex resumed>) = 0 [pid 4138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4138] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4139] <... umount2 resumed>) = 0 [pid 4139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4138] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4139] <... futex resumed>) = 0 [pid 4139] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4140 attached [pid 4140] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4140] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4138] <... clone resumed>, parent_tid=[4140], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4140 [pid 4138] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4140] <... futex resumed>) = 0 [pid 4138] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4140] umount2("./file0", MNT_DETACH) = 0 [pid 4140] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4138] <... futex resumed>) = 0 [pid 4140] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4138] exit_group(0) = ? [pid 4139] <... futex resumed>) = ? [pid 4139] +++ exited with 0 +++ [pid 4140] <... futex resumed>) = ? [pid 4140] +++ exited with 0 +++ [pid 4138] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4138, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4141 ./strace-static-x86_64: Process 4141 attached [pid 4141] set_robust_list(0x5555564465e0, 24) = 0 [pid 4141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4141] setpgid(0, 0) = 0 [pid 4141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4141] write(3, "1000", 4) = 4 [pid 4141] close(3) = 0 [pid 4141] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4141] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4141] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4141] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4142 attached , parent_tid=[4142], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4142 [pid 4142] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4142] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4142] <... futex resumed>) = 0 [pid 4142] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4141] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4142] <... futex resumed>) = 0 [pid 4142] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4142] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4142] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4141] <... futex resumed>) = 0 [pid 4141] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4142] <... mount resumed>) = 0 [pid 4142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4142] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4141] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4142] <... futex resumed>) = 0 [pid 4142] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4141] <... futex resumed>) = 0 [pid 4142] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4142] umount2("./file0", MNT_DETACH [pid 4141] <... futex resumed>) = 0 [pid 4141] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4141] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4141] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4142] <... umount2 resumed>) = 0 [pid 4141] <... mprotect resumed>) = 0 [pid 4142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4142] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4141] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4143 attached , parent_tid=[4143], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4143 [pid 4143] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4143] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4141] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4143] <... futex resumed>) = 0 [pid 4143] umount2("./file0", MNT_DETACH [pid 4141] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4143] <... umount2 resumed>) = 0 [pid 4143] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4143] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4141] exit_group(0) = ? [pid 4142] <... futex resumed>) = 230 [pid 4143] <... futex resumed>) = ? [pid 4143] +++ exited with 0 +++ [pid 4142] +++ exited with 0 +++ [pid 4141] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4141, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4144 ./strace-static-x86_64: Process 4144 attached [pid 4144] set_robust_list(0x5555564465e0, 24) = 0 [pid 4144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4144] setpgid(0, 0) = 0 [pid 4144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4144] write(3, "1000", 4) = 4 [pid 4144] close(3) = 0 [pid 4144] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4144] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4144] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4145], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4145 ./strace-static-x86_64: Process 4145 attached [pid 4145] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4145] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4145] <... futex resumed>) = 0 [pid 4145] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4145] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4144] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4145] <... futex resumed>) = 0 [pid 4145] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4144] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4145] <... mount resumed>) = 0 [pid 4145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4145] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4144] <... futex resumed>) = 0 [pid 4144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4145] <... futex resumed>) = 0 [pid 4145] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4144] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4145] <... mount resumed>) = 0 [pid 4145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4144] <... futex resumed>) = 0 [pid 4144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4144] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4145] umount2("./file0", MNT_DETACH [pid 4144] <... mmap resumed>) = 0x7fc84e05e000 [pid 4144] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4145] <... umount2 resumed>) = 0 [pid 4144] <... mprotect resumed>) = 0 [pid 4144] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4145] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4144] <... clone resumed>, parent_tid=[4146], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4146 [pid 4144] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4144] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4146 attached [pid 4146] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4146] umount2("./file0", MNT_DETACH) = 0 [pid 4146] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4144] <... futex resumed>) = 0 [pid 4146] <... futex resumed>) = 1 [pid 4144] exit_group(0 [pid 4146] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4144] <... exit_group resumed>) = ? [pid 4146] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4146] +++ exited with 0 +++ [pid 4145] <... futex resumed>) = ? [pid 4145] +++ exited with 0 +++ [pid 4144] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4144, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4147 ./strace-static-x86_64: Process 4147 attached [pid 4147] set_robust_list(0x5555564465e0, 24) = 0 [pid 4147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4147] setpgid(0, 0) = 0 [pid 4147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4147] write(3, "1000", 4) = 4 [pid 4147] close(3) = 0 [pid 4147] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4147] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4147] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4147] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4148 attached [pid 4148] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4148] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4147] <... clone resumed>, parent_tid=[4148], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4148 [pid 4147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4148] <... futex resumed>) = 0 [pid 4148] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4148] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4147] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4148] <... futex resumed>) = 0 [pid 4148] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4147] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4148] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4147] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4148] <... futex resumed>) = 0 [pid 4147] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4148] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4147] <... futex resumed>) = 0 [pid 4148] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4148] umount2("./file0", MNT_DETACH [pid 4147] <... futex resumed>) = 0 [pid 4147] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4147] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4148] <... umount2 resumed>) = 0 [pid 4147] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4148] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4147] <... mprotect resumed>) = 0 [pid 4147] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4149], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4149 [pid 4147] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4147] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4149 attached [pid 4149] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4149] umount2("./file0", MNT_DETACH) = 0 [pid 4149] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4147] <... futex resumed>) = 0 [pid 4149] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4147] exit_group(0 [pid 4149] <... futex resumed>) = 231 [pid 4147] <... exit_group resumed>) = ? [pid 4148] <... futex resumed>) = ? [pid 4148] +++ exited with 0 +++ [pid 4149] +++ exited with 0 +++ [pid 4147] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4147, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4150 ./strace-static-x86_64: Process 4150 attached [pid 4150] set_robust_list(0x5555564465e0, 24) = 0 [pid 4150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4150] setpgid(0, 0) = 0 [pid 4150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4150] write(3, "1000", 4) = 4 [pid 4150] close(3) = 0 [pid 4150] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4150] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4150] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4151 attached [pid 4151] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4151] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4150] <... clone resumed>, parent_tid=[4151], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4151 [pid 4150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4151] <... futex resumed>) = 0 [pid 4150] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4151] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4151] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4150] <... futex resumed>) = 0 [pid 4150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4151] <... futex resumed>) = 0 [pid 4151] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4150] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4151] <... mount resumed>) = 0 [pid 4151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4150] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4151] <... futex resumed>) = 0 [pid 4150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4151] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4150] <... futex resumed>) = 0 [pid 4151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4150] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4151] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4150] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4151] umount2("./file0", MNT_DETACH [pid 4150] <... futex resumed>) = 0 [pid 4150] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4150] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4150] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4151] <... umount2 resumed>) = 0 [pid 4151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4150] <... clone resumed>, parent_tid=[4152], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4152 [pid 4151] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4150] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4152 attached ) = 0 [pid 4152] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4152] umount2("./file0", MNT_DETACH [pid 4150] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4152] <... umount2 resumed>) = 0 [pid 4152] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4150] <... futex resumed>) = 0 [pid 4150] exit_group(0) = ? [pid 4151] <... futex resumed>) = ? [pid 4151] +++ exited with 0 +++ [pid 4152] +++ exited with 0 +++ [pid 4150] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4150, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4153 ./strace-static-x86_64: Process 4153 attached [pid 4153] set_robust_list(0x5555564465e0, 24) = 0 [pid 4153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4153] setpgid(0, 0) = 0 [pid 4153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4153] write(3, "1000", 4) = 4 [pid 4153] close(3) = 0 [pid 4153] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4153] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4153] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4154 attached , parent_tid=[4154], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4154 [pid 4154] set_robust_list(0x7fc84e09f9e0, 24 [pid 4153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4154] <... set_robust_list resumed>) = 0 [pid 4153] <... futex resumed>) = 0 [pid 4154] mkdir("./file0", 000 [pid 4153] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4154] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4153] <... futex resumed>) = 0 [pid 4154] <... futex resumed>) = 1 [pid 4153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4154] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4153] <... futex resumed>) = 0 [pid 4153] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4154] <... mount resumed>) = 0 [pid 4154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4153] <... futex resumed>) = 0 [pid 4153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4154] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4153] <... futex resumed>) = 0 [pid 4153] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4154] <... mount resumed>) = 0 [pid 4154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4153] <... futex resumed>) = 0 [pid 4153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4154] umount2("./file0", MNT_DETACH [pid 4153] <... futex resumed>) = 0 [pid 4153] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4154] <... umount2 resumed>) = 0 [pid 4153] <... mmap resumed>) = 0x7fc84e05e000 [pid 4154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4153] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4154] <... futex resumed>) = 0 [pid 4153] <... mprotect resumed>) = 0 [pid 4154] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4153] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4155 attached [pid 4155] set_robust_list(0x7fc84e07e9e0, 24 [pid 4153] <... clone resumed>, parent_tid=[4155], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4155 [pid 4155] <... set_robust_list resumed>) = 0 [pid 4153] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4155] umount2("./file0", MNT_DETACH [pid 4153] <... futex resumed>) = 0 [pid 4153] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4155] <... umount2 resumed>) = 0 [pid 4155] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4153] <... futex resumed>) = 0 [pid 4153] exit_group(0) = ? [pid 4154] <... futex resumed>) = ? [pid 4154] +++ exited with 0 +++ [pid 4155] +++ exited with 0 +++ [pid 4153] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4153, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4156 ./strace-static-x86_64: Process 4156 attached [pid 4156] set_robust_list(0x5555564465e0, 24) = 0 [pid 4156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4156] setpgid(0, 0) = 0 [pid 4156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4156] write(3, "1000", 4) = 4 [pid 4156] close(3) = 0 [pid 4156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4156] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4156] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4157 attached , parent_tid=[4157], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4157 [pid 4156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4157] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4157] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4156] <... futex resumed>) = 1 [pid 4157] <... futex resumed>) = 0 [pid 4157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4156] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4157] <... futex resumed>) = 0 [pid 4157] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4156] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4157] <... mount resumed>) = 0 [pid 4157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4157] <... futex resumed>) = 0 [pid 4157] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4156] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4157] <... mount resumed>) = 0 [pid 4157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4156] <... futex resumed>) = 0 [pid 4156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4157] <... futex resumed>) = 0 [pid 4157] umount2("./file0", MNT_DETACH [pid 4156] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4157] <... umount2 resumed>) = 0 [pid 4156] <... futex resumed>) = 0 [pid 4157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4156] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4156] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4158 attached , parent_tid=[4158], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4158 [pid 4158] set_robust_list(0x7fc84e07e9e0, 24 [pid 4156] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4158] <... set_robust_list resumed>) = 0 [pid 4158] umount2("./file0", MNT_DETACH [pid 4156] <... futex resumed>) = 0 [pid 4158] <... umount2 resumed>) = 0 [pid 4156] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4158] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4158] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4156] exit_group(0 [pid 4157] <... futex resumed>) = ? [pid 4156] <... exit_group resumed>) = ? [pid 4157] +++ exited with 0 +++ [pid 4158] <... futex resumed>) = ? [pid 4158] +++ exited with 0 +++ [pid 4156] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4156, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4159 ./strace-static-x86_64: Process 4159 attached [pid 4159] set_robust_list(0x5555564465e0, 24) = 0 [pid 4159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4159] setpgid(0, 0) = 0 [pid 4159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4159] write(3, "1000", 4) = 4 [pid 4159] close(3) = 0 [pid 4159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4159] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4159] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4160 attached , parent_tid=[4160], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4160 [pid 4160] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4160] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4160] <... futex resumed>) = 0 [pid 4159] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4160] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4159] <... futex resumed>) = 0 [pid 4159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4159] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4160] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4159] <... futex resumed>) = 0 [pid 4159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4159] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4160] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4159] <... futex resumed>) = 0 [pid 4159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4159] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4159] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4159] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4160] umount2("./file0", MNT_DETACH [pid 4159] <... clone resumed>, parent_tid=[4161], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4161 [pid 4159] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4159] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4161 attached [pid 4161] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4161] umount2("./file0", MNT_DETACH) = 0 [pid 4160] <... umount2 resumed>) = 0 [pid 4161] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4159] <... futex resumed>) = 0 [pid 4161] <... futex resumed>) = 1 [pid 4160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4161] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4160] <... futex resumed>) = 0 [pid 4160] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4159] exit_group(0) = ? [pid 4161] <... futex resumed>) = ? [pid 4160] <... futex resumed>) = ? [pid 4161] +++ exited with 0 +++ [pid 4160] +++ exited with 0 +++ [pid 4159] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4159, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4162 attached , child_tidptr=0x5555564465d0) = 4162 [pid 4162] set_robust_list(0x5555564465e0, 24) = 0 [pid 4162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4162] setpgid(0, 0) = 0 [pid 4162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4162] write(3, "1000", 4) = 4 [pid 4162] close(3) = 0 [pid 4162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4162] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4162] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4163 attached , parent_tid=[4163], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4163 [pid 4163] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4163] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4163] <... futex resumed>) = 0 [pid 4163] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4163] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4162] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4163] <... futex resumed>) = 0 [pid 4163] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4162] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4162] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4163] <... futex resumed>) = 0 [pid 4162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4163] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4162] <... futex resumed>) = 0 [pid 4162] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4163] <... mount resumed>) = 0 [pid 4163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4162] <... futex resumed>) = 0 [pid 4162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4163] umount2("./file0", MNT_DETACH [pid 4162] <... futex resumed>) = 0 [pid 4162] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4163] <... umount2 resumed>) = 0 [pid 4163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4162] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4163] <... futex resumed>) = 0 [pid 4162] <... mprotect resumed>) = 0 [pid 4163] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4162] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4164 attached , parent_tid=[4164], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4164 [pid 4164] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4164] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4162] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4164] <... futex resumed>) = 0 [pid 4164] umount2("./file0", MNT_DETACH [pid 4162] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4164] <... umount2 resumed>) = 0 [pid 4164] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4164] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4162] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4162] exit_group(0 [pid 4164] <... futex resumed>) = ? [pid 4163] <... futex resumed>) = ? [pid 4162] <... exit_group resumed>) = ? [pid 4163] +++ exited with 0 +++ [pid 4164] +++ exited with 0 +++ [pid 4162] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4162, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4165 ./strace-static-x86_64: Process 4165 attached [pid 4165] set_robust_list(0x5555564465e0, 24) = 0 [pid 4165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4165] setpgid(0, 0) = 0 [pid 4165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4165] write(3, "1000", 4) = 4 [pid 4165] close(3) = 0 [pid 4165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4165] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4165] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4166 attached , parent_tid=[4166], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4166 [pid 4165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4166] set_robust_list(0x7fc84e09f9e0, 24 [pid 4165] <... futex resumed>) = 0 [pid 4166] <... set_robust_list resumed>) = 0 [pid 4165] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4166] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4166] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4166] <... futex resumed>) = 0 [pid 4165] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4166] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4165] <... futex resumed>) = 0 [pid 4165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4165] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4166] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4165] <... futex resumed>) = 0 [pid 4165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4165] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4165] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4165] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4167], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4167 [pid 4166] umount2("./file0", MNT_DETACH [pid 4165] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4165] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4167 attached [pid 4167] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4167] umount2("./file0", MNT_DETACH) = 0 [pid 4167] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4165] <... futex resumed>) = 0 [pid 4167] <... futex resumed>) = 1 [pid 4166] <... umount2 resumed>) = 0 [pid 4167] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4166] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4165] exit_group(0) = ? [pid 4167] <... futex resumed>) = ? [pid 4166] <... futex resumed>) = ? [pid 4167] +++ exited with 0 +++ [pid 4166] +++ exited with 0 +++ [pid 4165] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4165, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4168 attached [pid 4168] set_robust_list(0x5555564465e0, 24 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 4168 [pid 4168] <... set_robust_list resumed>) = 0 [pid 4168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4168] setpgid(0, 0) = 0 [pid 4168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4168] write(3, "1000", 4) = 4 [pid 4168] close(3) = 0 [pid 4168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4168] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4168] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4169], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4169 [pid 4168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4169 attached [pid 4169] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4169] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4168] <... futex resumed>) = 0 [pid 4168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4169] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4168] <... futex resumed>) = 0 [pid 4168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4169] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4168] <... futex resumed>) = 0 [pid 4168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4168] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4168] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4170], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4170 [pid 4169] umount2("./file0", MNT_DETACH [pid 4168] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4168] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4170 attached [pid 4170] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4170] umount2("./file0", MNT_DETACH) = 0 [pid 4170] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4168] <... futex resumed>) = 0 [pid 4170] <... futex resumed>) = 1 [pid 4170] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4169] <... umount2 resumed>) = 0 [pid 4169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4169] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4168] exit_group(0) = ? [pid 4169] <... futex resumed>) = ? [pid 4170] <... futex resumed>) = ? [pid 4170] +++ exited with 0 +++ [pid 4169] +++ exited with 0 +++ [pid 4168] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4168, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4171 ./strace-static-x86_64: Process 4171 attached [pid 4171] set_robust_list(0x5555564465e0, 24) = 0 [pid 4171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4171] setpgid(0, 0) = 0 [pid 4171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4171] write(3, "1000", 4) = 4 [pid 4171] close(3) = 0 [pid 4171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4171] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4171] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4172 attached , parent_tid=[4172], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4172 [pid 4172] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4172] <... futex resumed>) = 0 [pid 4172] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4171] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4172] <... futex resumed>) = 0 [pid 4172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4172] <... futex resumed>) = 0 [pid 4172] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4171] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4172] <... mount resumed>) = 0 [pid 4172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4172] <... futex resumed>) = 0 [pid 4172] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4171] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4172] <... mount resumed>) = 0 [pid 4172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4171] <... futex resumed>) = 0 [pid 4171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4171] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4171] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4171] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4173], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4173 [pid 4171] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4172] umount2("./file0", MNT_DETACH [pid 4171] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4173 attached [pid 4173] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4173] umount2("./file0", MNT_DETACH) = 0 [pid 4172] <... umount2 resumed>) = 0 [pid 4173] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4171] <... futex resumed>) = 0 [pid 4173] <... futex resumed>) = 1 [pid 4173] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4171] exit_group(0) = ? [pid 4173] <... futex resumed>) = ? [pid 4173] +++ exited with 0 +++ [pid 4172] <... futex resumed>) = ? [pid 4172] +++ exited with 0 +++ [pid 4171] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4171, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4174 ./strace-static-x86_64: Process 4174 attached [pid 4174] set_robust_list(0x5555564465e0, 24) = 0 [pid 4174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4174] setpgid(0, 0) = 0 [pid 4174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4174] write(3, "1000", 4) = 4 [pid 4174] close(3) = 0 [pid 4174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4174] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4174] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4175 attached , parent_tid=[4175], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4175 [pid 4175] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4175] <... futex resumed>) = 0 [pid 4175] mkdir("./file0", 000 [pid 4174] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4175] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4174] <... futex resumed>) = 0 [pid 4174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4175] <... futex resumed>) = 0 [pid 4175] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4174] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4175] <... mount resumed>) = 0 [pid 4175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4174] <... futex resumed>) = 0 [pid 4175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4175] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4174] <... futex resumed>) = 0 [pid 4175] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4174] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4175] <... mount resumed>) = 0 [pid 4175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4174] <... futex resumed>) = 0 [pid 4175] umount2("./file0", MNT_DETACH [pid 4174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4174] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4174] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4174] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4175] <... umount2 resumed>) = 0 [pid 4175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4174] <... clone resumed>, parent_tid=[4176], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4176 [pid 4175] <... futex resumed>) = 0 [pid 4174] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4174] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4176 attached [pid 4176] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4176] umount2("./file0", MNT_DETACH) = 0 [pid 4176] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4174] <... futex resumed>) = 0 [pid 4176] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4174] exit_group(0) = ? [pid 4175] <... futex resumed>) = ? [pid 4175] +++ exited with 0 +++ [pid 4176] <... futex resumed>) = ? [pid 4176] +++ exited with 0 +++ [pid 4174] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4174, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4177 ./strace-static-x86_64: Process 4177 attached [pid 4177] set_robust_list(0x5555564465e0, 24) = 0 [pid 4177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4177] setpgid(0, 0) = 0 [pid 4177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4177] write(3, "1000", 4) = 4 [pid 4177] close(3) = 0 [pid 4177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4177] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4177] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4177] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4178 attached , parent_tid=[4178], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4178 [pid 4178] set_robust_list(0x7fc84e09f9e0, 24 [pid 4177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4178] <... set_robust_list resumed>) = 0 [pid 4178] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4178] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4177] <... futex resumed>) = 1 [pid 4178] <... futex resumed>) = 0 [pid 4178] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4177] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4177] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4178] <... futex resumed>) = 0 [pid 4178] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4178] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4177] <... futex resumed>) = 0 [pid 4177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4178] <... futex resumed>) = 0 [pid 4177] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4178] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4177] <... futex resumed>) = 0 [pid 4178] <... futex resumed>) = 1 [pid 4177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4178] umount2("./file0", MNT_DETACH [pid 4177] <... futex resumed>) = 0 [pid 4177] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4178] <... umount2 resumed>) = 0 [pid 4177] <... futex resumed>) = 0 [pid 4178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4177] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4178] <... futex resumed>) = 0 [pid 4177] <... mmap resumed>) = 0x7fc84e05e000 [pid 4178] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4177] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4177] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4179 attached [pid 4179] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4179] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4177] <... clone resumed>, parent_tid=[4179], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4179 [pid 4177] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4179] <... futex resumed>) = 0 [pid 4177] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4179] umount2("./file0", MNT_DETACH) = 0 [pid 4179] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4177] <... futex resumed>) = 0 [pid 4179] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4177] exit_group(0) = ? [pid 4178] <... futex resumed>) = ? [pid 4179] <... futex resumed>) = ? [pid 4179] +++ exited with 0 +++ [pid 4178] +++ exited with 0 +++ [pid 4177] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4177, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4180 ./strace-static-x86_64: Process 4180 attached [pid 4180] set_robust_list(0x5555564465e0, 24) = 0 [pid 4180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4180] setpgid(0, 0) = 0 [pid 4180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4180] write(3, "1000", 4) = 4 [pid 4180] close(3) = 0 [pid 4180] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4180] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4180] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4181 attached [pid 4181] set_robust_list(0x7fc84e09f9e0, 24 [pid 4180] <... clone resumed>, parent_tid=[4181], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4181 [pid 4181] <... set_robust_list resumed>) = 0 [pid 4180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4180] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4181] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4180] <... futex resumed>) = 0 [pid 4181] <... futex resumed>) = 1 [pid 4181] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4180] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4181] <... mount resumed>) = 0 [pid 4181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4180] <... futex resumed>) = 0 [pid 4181] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4180] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4181] <... mount resumed>) = 0 [pid 4181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4180] <... futex resumed>) = 0 [pid 4181] umount2("./file0", MNT_DETACH [pid 4180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4180] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4180] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4181] <... umount2 resumed>) = 0 [pid 4181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4180] <... mprotect resumed>) = 0 [pid 4181] <... futex resumed>) = 0 [pid 4180] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4181] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4182 attached [pid 4182] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4182] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4180] <... clone resumed>, parent_tid=[4182], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4182 [pid 4180] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4182] <... futex resumed>) = 0 [pid 4180] <... futex resumed>) = 1 [pid 4182] umount2("./file0", MNT_DETACH [pid 4180] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4182] <... umount2 resumed>) = 0 [pid 4182] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4180] <... futex resumed>) = 0 [pid 4180] exit_group(0) = ? [pid 4181] <... futex resumed>) = ? [pid 4181] +++ exited with 0 +++ [pid 4182] +++ exited with 0 +++ [pid 4180] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4180, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4183 ./strace-static-x86_64: Process 4183 attached [pid 4183] set_robust_list(0x5555564465e0, 24) = 0 [pid 4183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4183] setpgid(0, 0) = 0 [pid 4183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4183] write(3, "1000", 4) = 4 [pid 4183] close(3) = 0 [pid 4183] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4183] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4183] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4184 attached , parent_tid=[4184], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4184 [pid 4184] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4184] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4183] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4184] <... futex resumed>) = 0 [pid 4184] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4184] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] <... futex resumed>) = 0 [pid 4183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4183] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4184] <... futex resumed>) = 0 [pid 4184] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4184] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] <... futex resumed>) = 0 [pid 4183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4183] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4184] <... futex resumed>) = 0 [pid 4184] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4184] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] <... futex resumed>) = 0 [pid 4183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4184] <... futex resumed>) = 0 [pid 4183] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4184] umount2("./file0", MNT_DETACH [pid 4183] <... futex resumed>) = 0 [pid 4184] <... umount2 resumed>) = 0 [pid 4183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4184] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] <... mmap resumed>) = 0x7fc84e05e000 [pid 4183] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4183] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4185 attached [pid 4185] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4185] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] <... clone resumed>, parent_tid=[4185], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4185 [pid 4183] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4185] <... futex resumed>) = 0 [pid 4183] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4185] umount2("./file0", MNT_DETACH) = 0 [pid 4185] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4185] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4183] <... futex resumed>) = 0 [pid 4183] exit_group(0) = ? [pid 4184] <... futex resumed>) = ? [pid 4184] +++ exited with 0 +++ [pid 4185] <... futex resumed>) = ? [pid 4185] +++ exited with 0 +++ [pid 4183] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4183, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4186 ./strace-static-x86_64: Process 4186 attached [pid 4186] set_robust_list(0x5555564465e0, 24) = 0 [pid 4186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4186] setpgid(0, 0) = 0 [pid 4186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4186] write(3, "1000", 4) = 4 [pid 4186] close(3) = 0 [pid 4186] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4186] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4186] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4187 attached [pid 4187] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4186] <... clone resumed>, parent_tid=[4187], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4187 [pid 4186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4187] <... futex resumed>) = 0 [pid 4186] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4187] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4186] <... futex resumed>) = 0 [pid 4186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4186] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4187] <... futex resumed>) = 0 [pid 4187] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4186] <... futex resumed>) = 0 [pid 4186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4186] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4187] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4186] <... futex resumed>) = 0 [pid 4186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4186] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4186] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4186] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4187] umount2("./file0", MNT_DETACH [pid 4186] <... clone resumed>, parent_tid=[4188], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4188 [pid 4186] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4186] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4188 attached [pid 4187] <... umount2 resumed>) = 0 [pid 4188] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4188] umount2("./file0", MNT_DETACH [pid 4187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4188] <... umount2 resumed>) = 0 [pid 4188] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4186] <... futex resumed>) = 0 [pid 4186] exit_group(0 [pid 4187] <... futex resumed>) = ? [pid 4187] +++ exited with 0 +++ [pid 4186] <... exit_group resumed>) = ? [pid 4188] +++ exited with 0 +++ [pid 4186] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4186, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4189 attached , child_tidptr=0x5555564465d0) = 4189 [pid 4189] set_robust_list(0x5555564465e0, 24) = 0 [pid 4189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4189] setpgid(0, 0) = 0 [pid 4189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4189] write(3, "1000", 4) = 4 [pid 4189] close(3) = 0 [pid 4189] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4189] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4189] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4189] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4190 attached , parent_tid=[4190], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4190 [pid 4190] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4190] <... futex resumed>) = 0 [pid 4190] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4189] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4190] <... futex resumed>) = 0 [pid 4190] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4189] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4190] <... mount resumed>) = 0 [pid 4190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4190] <... futex resumed>) = 0 [pid 4190] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4189] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4190] <... mount resumed>) = 0 [pid 4190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4190] <... futex resumed>) = 0 [pid 4190] umount2("./file0", MNT_DETACH [pid 4189] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4189] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4190] <... umount2 resumed>) = 0 [pid 4189] <... mmap resumed>) = 0x7fc84e05e000 [pid 4190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4189] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4190] <... futex resumed>) = 0 [pid 4190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4189] <... mprotect resumed>) = 0 [pid 4189] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4192 attached , parent_tid=[4192], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4192 [pid 4192] set_robust_list(0x7fc84e07e9e0, 24 [pid 4189] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4192] <... set_robust_list resumed>) = 0 [pid 4189] <... futex resumed>) = 0 [pid 4192] umount2("./file0", MNT_DETACH [pid 4189] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4192] <... umount2 resumed>) = 0 [pid 4192] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4192] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4189] <... futex resumed>) = 0 [pid 4189] exit_group(0) = ? [pid 4190] <... futex resumed>) = ? [pid 4192] <... futex resumed>) = ? [pid 4192] +++ exited with 0 +++ [pid 4190] +++ exited with 0 +++ [pid 4189] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4189, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4193 ./strace-static-x86_64: Process 4193 attached [pid 4193] set_robust_list(0x5555564465e0, 24) = 0 [pid 4193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4193] setpgid(0, 0) = 0 [pid 4193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4193] write(3, "1000", 4) = 4 [pid 4193] close(3) = 0 [pid 4193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4193] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4193] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4194], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4194 [pid 4193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4194 attached [pid 4194] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4194] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4193] <... futex resumed>) = 0 [pid 4193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4194] <... futex resumed>) = 1 [pid 4194] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4193] <... futex resumed>) = 0 [pid 4194] <... futex resumed>) = 1 [pid 4193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4194] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4193] <... futex resumed>) = 0 [pid 4193] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4194] <... mount resumed>) = 0 [pid 4194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4193] <... futex resumed>) = 0 [pid 4193] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4193] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4194] umount2("./file0", MNT_DETACH [pid 4193] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4193] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4193] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4195], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4195 [pid 4194] <... umount2 resumed>) = 0 [pid 4193] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4193] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4195 attached [pid 4195] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4195] umount2("./file0", MNT_DETACH [pid 4194] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4194] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4195] <... umount2 resumed>) = 0 [pid 4195] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4193] <... futex resumed>) = 0 [pid 4193] exit_group(0) = ? [pid 4194] <... futex resumed>) = ? [pid 4195] <... futex resumed>) = ? [pid 4194] +++ exited with 0 +++ [pid 4195] +++ exited with 0 +++ [pid 4193] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4193, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4196 attached , child_tidptr=0x5555564465d0) = 4196 [pid 4196] set_robust_list(0x5555564465e0, 24) = 0 [pid 4196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4196] setpgid(0, 0) = 0 [pid 4196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4196] write(3, "1000", 4) = 4 [pid 4196] close(3) = 0 [pid 4196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4196] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4196] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4197 attached , parent_tid=[4197], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4197 [pid 4197] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4197] <... futex resumed>) = 0 [pid 4197] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4197] <... futex resumed>) = 0 [pid 4197] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4197] <... mount resumed>) = 0 [pid 4197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4197] <... futex resumed>) = 0 [pid 4197] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4196] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4197] <... mount resumed>) = 0 [pid 4197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] <... futex resumed>) = 0 [pid 4196] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4197] <... futex resumed>) = 0 [pid 4197] umount2("./file0", MNT_DETACH [pid 4196] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4197] <... umount2 resumed>) = 0 [pid 4197] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4197] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4196] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4196] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4198 attached , parent_tid=[4198], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4198 [pid 4198] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4198] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4198] <... futex resumed>) = 0 [pid 4198] umount2("./file0", MNT_DETACH [pid 4196] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4198] <... umount2 resumed>) = 0 [pid 4198] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4198] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4196] exit_group(0 [pid 4197] <... futex resumed>) = ? [pid 4196] <... exit_group resumed>) = ? [pid 4197] +++ exited with 0 +++ [pid 4198] <... futex resumed>) = ? [pid 4198] +++ exited with 0 +++ [pid 4196] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4196, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4199 ./strace-static-x86_64: Process 4199 attached [pid 4199] set_robust_list(0x5555564465e0, 24) = 0 [pid 4199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4199] setpgid(0, 0) = 0 [pid 4199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4199] write(3, "1000", 4) = 4 [pid 4199] close(3) = 0 [pid 4199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4199] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4199] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4200 attached , parent_tid=[4200], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4200 [pid 4200] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4200] <... futex resumed>) = 0 [pid 4199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4200] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4199] <... futex resumed>) = 0 [pid 4199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4200] <... futex resumed>) = 0 [pid 4200] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4200] <... mount resumed>) = 0 [pid 4200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4199] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4200] <... futex resumed>) = 0 [pid 4199] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4200] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4199] <... futex resumed>) = 0 [pid 4199] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4200] <... futex resumed>) = 0 [pid 4199] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4200] umount2("./file0", MNT_DETACH [pid 4199] <... futex resumed>) = 0 [pid 4199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4200] <... umount2 resumed>) = 0 [pid 4199] <... mmap resumed>) = 0x7fc84e05e000 [pid 4200] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4199] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4200] <... futex resumed>) = 0 [pid 4199] <... mprotect resumed>) = 0 [pid 4200] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4199] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4201 attached , parent_tid=[4201], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4201 [pid 4201] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4199] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4201] umount2("./file0", MNT_DETACH [pid 4199] <... futex resumed>) = 0 [pid 4199] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4201] <... umount2 resumed>) = 0 [pid 4201] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4199] <... futex resumed>) = 0 [pid 4201] <... futex resumed>) = 1 [pid 4199] exit_group(0 [pid 4201] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4199] <... exit_group resumed>) = ? [pid 4200] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4201] <... futex resumed>) = ? [pid 4200] +++ exited with 0 +++ [pid 4201] +++ exited with 0 +++ [pid 4199] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4199, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4202 ./strace-static-x86_64: Process 4202 attached [pid 4202] set_robust_list(0x5555564465e0, 24) = 0 [pid 4202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4202] setpgid(0, 0) = 0 [pid 4202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4202] write(3, "1000", 4) = 4 [pid 4202] close(3) = 0 [pid 4202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4202] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4202] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4203 attached , parent_tid=[4203], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4203 [pid 4203] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4203] <... futex resumed>) = 0 [pid 4203] mkdir("./file0", 000 [pid 4202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4203] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4203] <... futex resumed>) = 0 [pid 4203] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4203] <... mount resumed>) = 0 [pid 4203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4202] <... futex resumed>) = 0 [pid 4203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4202] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4203] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4202] <... futex resumed>) = 0 [pid 4202] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4202] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4202] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4202] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4203] umount2("./file0", MNT_DETACH) = 0 [pid 4202] <... clone resumed>, parent_tid=[4204], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4204 [pid 4202] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4202] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4204 attached [pid 4204] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4204] umount2("./file0", MNT_DETACH [pid 4203] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4204] <... umount2 resumed>) = 0 [pid 4203] <... futex resumed>) = 0 [pid 4204] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4202] <... futex resumed>) = 0 [pid 4203] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4202] exit_group(0) = ? [pid 4203] <... futex resumed>) = ? [pid 4204] <... futex resumed>) = ? [pid 4203] +++ exited with 0 +++ [pid 4204] +++ exited with 0 +++ [pid 4202] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4202, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4205 ./strace-static-x86_64: Process 4205 attached [pid 4205] set_robust_list(0x5555564465e0, 24) = 0 [pid 4205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4205] setpgid(0, 0) = 0 [pid 4205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4205] write(3, "1000", 4) = 4 [pid 4205] close(3) = 0 [pid 4205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4205] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4205] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4206 attached , parent_tid=[4206], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4206 [pid 4206] set_robust_list(0x7fc84e09f9e0, 24 [pid 4205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4206] <... set_robust_list resumed>) = 0 [pid 4205] <... futex resumed>) = 0 [pid 4205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4206] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4205] <... futex resumed>) = 0 [pid 4206] <... futex resumed>) = 1 [pid 4205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4206] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4205] <... futex resumed>) = 0 [pid 4205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4206] <... mount resumed>) = 0 [pid 4206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4205] <... futex resumed>) = 0 [pid 4206] <... futex resumed>) = 1 [pid 4205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4206] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4205] <... futex resumed>) = 0 [pid 4205] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4206] <... mount resumed>) = 0 [pid 4206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4205] <... futex resumed>) = 0 [pid 4206] <... futex resumed>) = 1 [pid 4205] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4206] umount2("./file0", MNT_DETACH [pid 4205] <... futex resumed>) = 0 [pid 4205] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4205] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4205] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4206] <... umount2 resumed>) = 0 [pid 4205] <... clone resumed>, parent_tid=[4207], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4207 ./strace-static-x86_64: Process 4207 attached [pid 4206] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4205] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4207] set_robust_list(0x7fc84e07e9e0, 24 [pid 4206] <... futex resumed>) = 0 [pid 4207] <... set_robust_list resumed>) = 0 [pid 4205] <... futex resumed>) = 0 [pid 4206] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4207] umount2("./file0", MNT_DETACH [pid 4205] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4207] <... umount2 resumed>) = 0 [pid 4207] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4205] <... futex resumed>) = 0 [pid 4207] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4205] exit_group(0) = ? [pid 4207] <... futex resumed>) = ? [pid 4206] <... futex resumed>) = ? [pid 4206] +++ exited with 0 +++ [pid 4207] +++ exited with 0 +++ [pid 4205] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4205, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4208 ./strace-static-x86_64: Process 4208 attached [pid 4208] set_robust_list(0x5555564465e0, 24) = 0 [pid 4208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4208] setpgid(0, 0) = 0 [pid 4208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4208] write(3, "1000", 4) = 4 [pid 4208] close(3) = 0 [pid 4208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4208] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4208] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4209 attached , parent_tid=[4209], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4209 [pid 4209] set_robust_list(0x7fc84e09f9e0, 24 [pid 4208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4209] <... set_robust_list resumed>) = 0 [pid 4209] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4208] <... futex resumed>) = 1 [pid 4209] <... futex resumed>) = 0 [pid 4208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4209] <... futex resumed>) = 0 [pid 4209] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4209] <... mount resumed>) = 0 [pid 4209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4208] <... futex resumed>) = 0 [pid 4208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4209] <... futex resumed>) = 0 [pid 4208] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4209] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4208] <... futex resumed>) = 0 [pid 4209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4208] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4209] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4208] <... futex resumed>) = 0 [pid 4209] umount2("./file0", MNT_DETACH [pid 4208] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4209] <... umount2 resumed>) = 0 [pid 4208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4209] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4208] <... mmap resumed>) = 0x7fc84e05e000 [pid 4209] <... futex resumed>) = 0 [pid 4208] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4209] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4208] <... mprotect resumed>) = 0 [pid 4208] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4210 attached , parent_tid=[4210], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4210 [pid 4210] set_robust_list(0x7fc84e07e9e0, 24 [pid 4208] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4210] <... set_robust_list resumed>) = 0 [pid 4208] <... futex resumed>) = 0 [pid 4210] umount2("./file0", MNT_DETACH [pid 4208] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4210] <... umount2 resumed>) = 0 [pid 4210] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4208] <... futex resumed>) = 0 [pid 4210] <... futex resumed>) = 1 [pid 4208] exit_group(0 [pid 4210] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4208] <... exit_group resumed>) = ? [pid 4209] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4210] <... futex resumed>) = ? [pid 4209] +++ exited with 0 +++ [pid 4210] +++ exited with 0 +++ [pid 4208] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4208, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4211 ./strace-static-x86_64: Process 4211 attached [pid 4211] set_robust_list(0x5555564465e0, 24) = 0 [pid 4211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4211] setpgid(0, 0) = 0 [pid 4211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4211] write(3, "1000", 4) = 4 [pid 4211] close(3) = 0 [pid 4211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4211] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4211] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4212 attached , parent_tid=[4212], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4212 [pid 4211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4212] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4212] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4211] <... futex resumed>) = 0 [pid 4211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4212] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4211] <... futex resumed>) = 0 [pid 4211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4212] <... mount resumed>) = 0 [pid 4212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4211] <... futex resumed>) = 0 [pid 4211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4211] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4212] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4211] <... futex resumed>) = 0 [pid 4211] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4211] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4211] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4211] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4212] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4213 attached [pid 4213] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4213] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4212] <... umount2 resumed>) = 0 [pid 4211] <... clone resumed>, parent_tid=[4213], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4213 [pid 4212] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4211] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4212] <... futex resumed>) = 0 [pid 4211] <... futex resumed>) = 1 [pid 4213] <... futex resumed>) = 0 [pid 4213] umount2("./file0", MNT_DETACH) = 0 [pid 4213] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4213] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4212] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4211] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4211] exit_group(0 [pid 4212] <... futex resumed>) = ? [pid 4211] <... exit_group resumed>) = ? [pid 4213] <... futex resumed>) = ? [pid 4213] +++ exited with 0 +++ [pid 4212] +++ exited with 0 +++ [pid 4211] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4211, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4214 ./strace-static-x86_64: Process 4214 attached [pid 4214] set_robust_list(0x5555564465e0, 24) = 0 [pid 4214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4214] setpgid(0, 0) = 0 [pid 4214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4214] write(3, "1000", 4) = 4 [pid 4214] close(3) = 0 [pid 4214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4214] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4214] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4215], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4215 [pid 4214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4215 attached [pid 4215] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4215] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4214] <... futex resumed>) = 0 [pid 4214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4215] <... futex resumed>) = 1 [pid 4215] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4214] <... futex resumed>) = 0 [pid 4214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4215] <... futex resumed>) = 1 [pid 4215] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4214] <... futex resumed>) = 0 [pid 4214] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4214] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4214] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4216 attached , parent_tid=[4216], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4216 [pid 4216] set_robust_list(0x7fc84e07e9e0, 24 [pid 4214] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4214] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4215] <... futex resumed>) = 1 [pid 4215] umount2("./file0", MNT_DETACH [pid 4216] <... set_robust_list resumed>) = 0 [pid 4216] umount2("./file0", MNT_DETACH [pid 4215] <... umount2 resumed>) = 0 [pid 4215] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4215] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4216] <... umount2 resumed>) = 0 [pid 4216] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4214] <... futex resumed>) = 0 [pid 4214] exit_group(0) = ? [pid 4216] +++ exited with 0 +++ [pid 4215] <... futex resumed>) = ? [pid 4215] +++ exited with 0 +++ [pid 4214] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4214, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4217 ./strace-static-x86_64: Process 4217 attached [pid 4217] set_robust_list(0x5555564465e0, 24) = 0 [pid 4217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4217] setpgid(0, 0) = 0 [pid 4217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4217] write(3, "1000", 4) = 4 [pid 4217] close(3) = 0 [pid 4217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4217] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4217] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4218 attached , parent_tid=[4218], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4218 [pid 4218] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4218] <... futex resumed>) = 0 [pid 4217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4218] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4218] <... futex resumed>) = 0 [pid 4218] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4218] <... mount resumed>) = 0 [pid 4218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4218] <... futex resumed>) = 0 [pid 4218] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4217] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4218] <... mount resumed>) = 0 [pid 4218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] <... futex resumed>) = 0 [pid 4217] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4218] <... futex resumed>) = 0 [pid 4218] umount2("./file0", MNT_DETACH [pid 4217] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4218] <... umount2 resumed>) = 0 [pid 4218] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4218] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] <... futex resumed>) = 0 [pid 4217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4217] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4217] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4219 attached [pid 4219] set_robust_list(0x7fc84e07e9e0, 24 [pid 4217] <... clone resumed>, parent_tid=[4219], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4219 [pid 4219] <... set_robust_list resumed>) = 0 [pid 4219] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4219] <... futex resumed>) = 0 [pid 4219] umount2("./file0", MNT_DETACH [pid 4217] <... futex resumed>) = 1 [pid 4217] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4219] <... umount2 resumed>) = 0 [pid 4219] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4219] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4217] <... futex resumed>) = 0 [pid 4217] exit_group(0 [pid 4218] <... futex resumed>) = ? [pid 4217] <... exit_group resumed>) = ? [pid 4218] +++ exited with 0 +++ [pid 4219] <... futex resumed>) = ? [pid 4219] +++ exited with 0 +++ [pid 4217] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4217, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4220 ./strace-static-x86_64: Process 4220 attached [pid 4220] set_robust_list(0x5555564465e0, 24) = 0 [pid 4220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4220] setpgid(0, 0) = 0 [pid 4220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4220] write(3, "1000", 4) = 4 [pid 4220] close(3) = 0 [pid 4220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4220] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4220] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4221], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4221 [pid 4220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4221 attached ) = 0 [pid 4221] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4221] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4221] <... futex resumed>) = 0 [pid 4220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4221] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4220] <... futex resumed>) = 0 [pid 4220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4220] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4221] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4220] <... futex resumed>) = 0 [pid 4220] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4220] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4220] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4220] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4221] umount2("./file0", MNT_DETACH [pid 4220] <... clone resumed>, parent_tid=[4222], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4222 [pid 4220] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4221] <... umount2 resumed>) = 0 [pid 4220] <... futex resumed>) = 0 [pid 4220] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4222 attached [pid 4222] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4222] umount2("./file0", MNT_DETACH [pid 4221] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4222] <... umount2 resumed>) = 0 [pid 4222] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4220] <... futex resumed>) = 0 [pid 4220] exit_group(0 [pid 4221] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4220] <... exit_group resumed>) = ? [pid 4221] <... futex resumed>) = ? [pid 4221] +++ exited with 0 +++ [pid 4222] <... futex resumed>) = ? [pid 4222] +++ exited with 0 +++ [pid 4220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4220, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4223 ./strace-static-x86_64: Process 4223 attached [pid 4223] set_robust_list(0x5555564465e0, 24) = 0 [pid 4223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4223] setpgid(0, 0) = 0 [pid 4223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4223] write(3, "1000", 4) = 4 [pid 4223] close(3) = 0 [pid 4223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4223] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4223] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4224], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4224 ./strace-static-x86_64: Process 4224 attached [pid 4223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4224] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4224] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4223] <... futex resumed>) = 1 [pid 4224] <... futex resumed>) = 0 [pid 4224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4224] <... futex resumed>) = 0 [pid 4224] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4224] <... mount resumed>) = 0 [pid 4224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4223] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4224] <... futex resumed>) = 0 [pid 4224] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4223] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4224] <... mount resumed>) = 0 [pid 4224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4223] <... futex resumed>) = 0 [pid 4224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4223] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4224] umount2("./file0", MNT_DETACH [pid 4223] <... futex resumed>) = 0 [pid 4223] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4224] <... umount2 resumed>) = 0 [pid 4223] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4224] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4223] <... mprotect resumed>) = 0 [pid 4224] <... futex resumed>) = 0 [pid 4223] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4224] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4225 attached [pid 4223] <... clone resumed>, parent_tid=[4225], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4225 [pid 4225] set_robust_list(0x7fc84e07e9e0, 24 [pid 4223] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4225] <... set_robust_list resumed>) = 0 [pid 4223] <... futex resumed>) = 0 [pid 4225] umount2("./file0", MNT_DETACH [pid 4223] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4225] <... umount2 resumed>) = 0 [pid 4225] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4223] <... futex resumed>) = 0 [pid 4225] <... futex resumed>) = 1 [pid 4223] exit_group(0 [pid 4225] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 4224] <... futex resumed>) = ? [pid 4223] <... exit_group resumed>) = ? [pid 4224] +++ exited with 0 +++ [pid 4225] +++ exited with 0 +++ [pid 4223] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4223, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4226 ./strace-static-x86_64: Process 4226 attached [pid 4226] set_robust_list(0x5555564465e0, 24) = 0 [pid 4226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4226] setpgid(0, 0) = 0 [pid 4226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4226] write(3, "1000", 4) = 4 [pid 4226] close(3) = 0 [pid 4226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4226] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4226] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4227 attached , parent_tid=[4227], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4227 [pid 4227] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4227] <... futex resumed>) = 0 [pid 4227] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4227] <... futex resumed>) = 0 [pid 4227] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4227] <... futex resumed>) = 0 [pid 4227] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4227] <... mount resumed>) = 0 [pid 4227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4226] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4227] <... futex resumed>) = 0 [pid 4227] umount2("./file0", MNT_DETACH) = 0 [pid 4227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4226] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4227] <... futex resumed>) = 0 [pid 4227] umount2("./file0", MNT_DETACH) = 0 [pid 4227] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4227] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4226] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4226] exit_group(0) = ? [pid 4227] <... futex resumed>) = ? [pid 4227] +++ exited with 0 +++ [pid 4226] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4226, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4228 ./strace-static-x86_64: Process 4228 attached [pid 4228] set_robust_list(0x5555564465e0, 24) = 0 [pid 4228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4228] setpgid(0, 0) = 0 [pid 4228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4228] write(3, "1000", 4) = 4 [pid 4228] close(3) = 0 [pid 4228] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4228] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4228] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4229 attached [pid 4229] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4229] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] <... clone resumed>, parent_tid=[4229], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4229 [pid 4228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4229] <... futex resumed>) = 0 [pid 4229] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4228] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4229] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4229] <... futex resumed>) = 0 [pid 4229] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4228] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4229] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4229] <... futex resumed>) = 0 [pid 4229] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4228] <... futex resumed>) = 1 [pid 4228] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4229] <... mount resumed>) = 0 [pid 4229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4229] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] <... futex resumed>) = 0 [pid 4228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4229] <... futex resumed>) = 0 [pid 4229] umount2("./file0", MNT_DETACH [pid 4228] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4229] <... umount2 resumed>) = 0 [pid 4228] <... mmap resumed>) = 0x7fc84e05e000 [pid 4229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4228] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4229] <... futex resumed>) = 0 [pid 4228] <... mprotect resumed>) = 0 [pid 4229] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4230 attached [pid 4230] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4230] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] <... clone resumed>, parent_tid=[4230], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4230 [pid 4228] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4230] <... futex resumed>) = 0 [pid 4228] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4230] umount2("./file0", MNT_DETACH) = 0 [pid 4230] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4228] <... futex resumed>) = 0 [pid 4230] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4228] exit_group(0) = ? [pid 4230] <... futex resumed>) = ? [pid 4229] <... futex resumed>) = ? [pid 4229] +++ exited with 0 +++ [pid 4230] +++ exited with 0 +++ [pid 4228] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4228, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4231 ./strace-static-x86_64: Process 4231 attached [pid 4231] set_robust_list(0x5555564465e0, 24) = 0 [pid 4231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4231] setpgid(0, 0) = 0 [pid 4231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4231] write(3, "1000", 4) = 4 [pid 4231] close(3) = 0 [pid 4231] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4231] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4231] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4232 attached , parent_tid=[4232], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4232 [pid 4232] set_robust_list(0x7fc84e09f9e0, 24 [pid 4231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4232] <... set_robust_list resumed>) = 0 [pid 4231] <... futex resumed>) = 0 [pid 4232] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4232] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4231] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4232] <... futex resumed>) = 0 [pid 4232] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4231] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4232] <... mount resumed>) = 0 [pid 4232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4232] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4231] <... futex resumed>) = 0 [pid 4231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4232] <... futex resumed>) = 0 [pid 4232] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4231] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4232] <... mount resumed>) = 0 [pid 4232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4231] <... futex resumed>) = 0 [pid 4232] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4231] <... futex resumed>) = 0 [pid 4232] umount2("./file0", MNT_DETACH [pid 4231] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4232] <... umount2 resumed>) = 0 [pid 4231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4231] <... mmap resumed>) = 0x7fc84e05e000 [pid 4232] <... futex resumed>) = 0 [pid 4231] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4232] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4231] <... mprotect resumed>) = 0 [pid 4231] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4233 attached [pid 4233] set_robust_list(0x7fc84e07e9e0, 24 [pid 4231] <... clone resumed>, parent_tid=[4233], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4233 [pid 4233] <... set_robust_list resumed>) = 0 [pid 4231] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4233] umount2("./file0", MNT_DETACH [pid 4231] <... futex resumed>) = 0 [pid 4231] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4233] <... umount2 resumed>) = 0 [pid 4233] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4231] <... futex resumed>) = 0 [pid 4233] <... futex resumed>) = 1 [pid 4231] exit_group(0 [pid 4233] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4231] <... exit_group resumed>) = ? [pid 4232] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4233] <... futex resumed>) = ? [pid 4232] +++ exited with 0 +++ [pid 4233] +++ exited with 0 +++ [pid 4231] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4231, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4234 ./strace-static-x86_64: Process 4234 attached [pid 4234] set_robust_list(0x5555564465e0, 24) = 0 [pid 4234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4234] setpgid(0, 0) = 0 [pid 4234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4234] write(3, "1000", 4) = 4 [pid 4234] close(3) = 0 [pid 4234] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4234] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4234] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4235 attached , parent_tid=[4235], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4235 [pid 4235] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4235] <... futex resumed>) = 0 [pid 4235] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4234] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4235] <... futex resumed>) = 0 [pid 4235] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4234] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4235] <... futex resumed>) = 0 [pid 4235] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4234] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4235] <... mount resumed>) = 0 [pid 4235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4234] <... futex resumed>) = 0 [pid 4234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4235] <... futex resumed>) = 0 [pid 4235] umount2("./file0", MNT_DETACH [pid 4234] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4235] <... umount2 resumed>) = 0 [pid 4235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4234] <... futex resumed>) = 0 [pid 4235] <... futex resumed>) = 0 [pid 4235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4234] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4234] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4236 attached , parent_tid=[4236], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4236 [pid 4234] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4236] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4236] umount2("./file0", MNT_DETACH [pid 4234] <... futex resumed>) = 0 [pid 4236] <... umount2 resumed>) = 0 [pid 4234] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4236] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4236] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4234] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4234] exit_group(0 [pid 4235] <... futex resumed>) = ? [pid 4234] <... exit_group resumed>) = ? [pid 4235] +++ exited with 0 +++ [pid 4236] <... futex resumed>) = ? [pid 4236] +++ exited with 0 +++ [pid 4234] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4234, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4237 attached , child_tidptr=0x5555564465d0) = 4237 [pid 4237] set_robust_list(0x5555564465e0, 24) = 0 [pid 4237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4237] setpgid(0, 0) = 0 [pid 4237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4237] write(3, "1000", 4) = 4 [pid 4237] close(3) = 0 [pid 4237] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4237] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4237] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4238 attached , parent_tid=[4238], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4238 [pid 4238] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4238] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4238] <... futex resumed>) = 0 [pid 4238] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4238] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4237] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4238] <... futex resumed>) = 0 [pid 4238] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4237] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4238] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4237] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4238] <... futex resumed>) = 0 [pid 4238] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4237] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4238] <... mount resumed>) = 0 [pid 4238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4237] <... futex resumed>) = 0 [pid 4237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4237] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4237] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4237] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4239], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4239 [pid 4238] umount2("./file0", MNT_DETACH [pid 4237] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4237] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4239 attached [pid 4238] <... umount2 resumed>) = 0 [pid 4238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4238] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4239] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4239] umount2("./file0", MNT_DETACH) = 0 [pid 4239] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4237] <... futex resumed>) = 0 [pid 4237] exit_group(0) = ? [pid 4239] <... futex resumed>) = ? [pid 4238] <... futex resumed>) = ? [pid 4238] +++ exited with 0 +++ [pid 4239] +++ exited with 0 +++ [pid 4237] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4237, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4240 ./strace-static-x86_64: Process 4240 attached [pid 4240] set_robust_list(0x5555564465e0, 24) = 0 [pid 4240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4240] setpgid(0, 0) = 0 [pid 4240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4240] write(3, "1000", 4) = 4 [pid 4240] close(3) = 0 [pid 4240] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4240] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4240] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4241 attached , parent_tid=[4241], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4241 [pid 4241] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4241] <... futex resumed>) = 0 [pid 4240] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4241] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4241] <... futex resumed>) = 0 [pid 4241] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4240] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4241] <... mount resumed>) = 0 [pid 4241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4241] <... futex resumed>) = 0 [pid 4241] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4240] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4241] <... mount resumed>) = 0 [pid 4241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4240] <... futex resumed>) = 0 [pid 4240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4241] <... futex resumed>) = 0 [pid 4241] umount2("./file0", MNT_DETACH [pid 4240] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4241] <... umount2 resumed>) = 0 [pid 4240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4240] <... mmap resumed>) = 0x7fc84e05e000 [pid 4240] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4240] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4242 attached [pid 4242] set_robust_list(0x7fc84e07e9e0, 24 [pid 4240] <... clone resumed>, parent_tid=[4242], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4242 [pid 4242] <... set_robust_list resumed>) = 0 [pid 4242] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4240] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4242] <... futex resumed>) = 0 [pid 4242] umount2("./file0", MNT_DETACH [pid 4240] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4242] <... umount2 resumed>) = 0 [pid 4242] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4240] <... futex resumed>) = 0 [pid 4240] exit_group(0 [pid 4241] <... futex resumed>) = ? [pid 4241] +++ exited with 0 +++ [pid 4240] <... exit_group resumed>) = ? [pid 4242] +++ exited with 0 +++ [pid 4240] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4240, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4243 ./strace-static-x86_64: Process 4243 attached [pid 4243] set_robust_list(0x5555564465e0, 24) = 0 [pid 4243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4243] setpgid(0, 0) = 0 [pid 4243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4243] write(3, "1000", 4) = 4 [pid 4243] close(3) = 0 [pid 4243] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4243] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4243] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4244 attached [pid 4244] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4243] <... clone resumed>, parent_tid=[4244], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4244 [pid 4243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4244] <... futex resumed>) = 0 [pid 4243] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4244] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4243] <... futex resumed>) = 0 [pid 4244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4243] <... futex resumed>) = 0 [pid 4244] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4243] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4244] <... mount resumed>) = 0 [pid 4244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4243] <... futex resumed>) = 0 [pid 4243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4244] <... futex resumed>) = 0 [pid 4243] <... futex resumed>) = 1 [pid 4243] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4244] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4243] <... futex resumed>) = 0 [pid 4244] umount2("./file0", MNT_DETACH [pid 4243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4243] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4244] <... umount2 resumed>) = 0 [pid 4243] <... mmap resumed>) = 0x7fc84e05e000 [pid 4244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4243] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4244] <... futex resumed>) = 0 [pid 4243] <... mprotect resumed>) = 0 [pid 4244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4243] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4245 attached , parent_tid=[4245], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4245 [pid 4243] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4245] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4245] umount2("./file0", MNT_DETACH [pid 4243] <... futex resumed>) = 0 [pid 4243] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4245] <... umount2 resumed>) = 0 [pid 4245] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4245] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4243] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4243] exit_group(0 [pid 4244] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4243] <... exit_group resumed>) = ? [pid 4244] +++ exited with 0 +++ [pid 4245] <... futex resumed>) = ? [pid 4245] +++ exited with 0 +++ [pid 4243] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4243, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4246 ./strace-static-x86_64: Process 4246 attached [pid 4246] set_robust_list(0x5555564465e0, 24) = 0 [pid 4246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4246] setpgid(0, 0) = 0 [pid 4246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4246] write(3, "1000", 4) = 4 [pid 4246] close(3) = 0 [pid 4246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4246] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4246] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4247], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4247 [pid 4246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4247 attached [pid 4247] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4247] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4246] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4247] <... futex resumed>) = 0 [pid 4247] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4247] <... mount resumed>) = 0 [pid 4247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4246] <... futex resumed>) = 0 [pid 4246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4247] <... futex resumed>) = 0 [pid 4247] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4247] <... mount resumed>) = 0 [pid 4247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4246] <... futex resumed>) = 0 [pid 4246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4246] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4246] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4246] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4247] umount2("./file0", MNT_DETACH [pid 4246] <... clone resumed>, parent_tid=[4248], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4248 [pid 4246] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4246] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4248 attached [pid 4248] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4248] umount2("./file0", MNT_DETACH [pid 4247] <... umount2 resumed>) = 0 [pid 4248] <... umount2 resumed>) = 0 [pid 4247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4248] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4246] <... futex resumed>) = 0 [pid 4246] exit_group(0 [pid 4248] <... futex resumed>) = 1 [pid 4246] <... exit_group resumed>) = ? [pid 4248] +++ exited with 0 +++ [pid 4247] <... futex resumed>) = ? [pid 4247] +++ exited with 0 +++ [pid 4246] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4249 attached , child_tidptr=0x5555564465d0) = 4249 [pid 4249] set_robust_list(0x5555564465e0, 24) = 0 [pid 4249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4249] setpgid(0, 0) = 0 [pid 4249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4249] write(3, "1000", 4) = 4 [pid 4249] close(3) = 0 [pid 4249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4249] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4249] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4250 attached , parent_tid=[4250], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4250 [pid 4250] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4250] <... futex resumed>) = 0 [pid 4250] mkdir("./file0", 000 [pid 4249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4250] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4249] <... futex resumed>) = 0 [pid 4249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4250] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4249] <... futex resumed>) = 0 [pid 4249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4250] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4249] <... futex resumed>) = 0 [pid 4249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4249] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4249] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4249] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4251], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4251 [pid 4250] umount2("./file0", MNT_DETACH [pid 4249] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4249] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4251 attached [pid 4251] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4251] umount2("./file0", MNT_DETACH) = 0 [pid 4250] <... umount2 resumed>) = 0 [pid 4251] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4249] <... futex resumed>) = 0 [pid 4251] <... futex resumed>) = 1 [pid 4250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4251] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4250] <... futex resumed>) = 0 [pid 4250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4249] exit_group(0) = ? [pid 4251] <... futex resumed>) = 231 [pid 4250] <... futex resumed>) = ? [pid 4250] +++ exited with 0 +++ [pid 4251] +++ exited with 0 +++ [pid 4249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4252 ./strace-static-x86_64: Process 4252 attached [pid 4252] set_robust_list(0x5555564465e0, 24) = 0 [pid 4252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4252] setpgid(0, 0) = 0 [pid 4252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4252] write(3, "1000", 4) = 4 [pid 4252] close(3) = 0 [pid 4252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4252] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4252] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4253 attached , parent_tid=[4253], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4253 [pid 4252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4253] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4253] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4252] <... futex resumed>) = 0 [pid 4252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4253] <... futex resumed>) = 1 [pid 4253] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4252] <... futex resumed>) = 0 [pid 4253] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4253] <... mount resumed>) = 0 [pid 4252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4252] <... futex resumed>) = 0 [pid 4253] umount2("./file0", MNT_DETACH [pid 4252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4252] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4252] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4252] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4253] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4254 attached [pid 4254] set_robust_list(0x7fc84e07e9e0, 24 [pid 4252] <... clone resumed>, parent_tid=[4254], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4254 [pid 4254] <... set_robust_list resumed>) = 0 [pid 4252] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4254] umount2("./file0", MNT_DETACH [pid 4252] <... futex resumed>) = 0 [pid 4252] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4254] <... umount2 resumed>) = 0 [pid 4254] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4252] <... futex resumed>) = 0 [pid 4254] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4252] exit_group(0 [pid 4254] <... futex resumed>) = ? [pid 4252] <... exit_group resumed>) = ? [pid 4254] +++ exited with 0 +++ [pid 4253] <... futex resumed>) = ? [pid 4253] +++ exited with 0 +++ [pid 4252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4255 ./strace-static-x86_64: Process 4255 attached [pid 4255] set_robust_list(0x5555564465e0, 24) = 0 [pid 4255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4255] setpgid(0, 0) = 0 [pid 4255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4255] write(3, "1000", 4) = 4 [pid 4255] close(3) = 0 [pid 4255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4255] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4255] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4256 attached , parent_tid=[4256], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4256 [pid 4256] set_robust_list(0x7fc84e09f9e0, 24 [pid 4255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4256] <... set_robust_list resumed>) = 0 [pid 4255] <... futex resumed>) = 0 [pid 4256] mkdir("./file0", 000 [pid 4255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4256] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4255] <... futex resumed>) = 0 [pid 4256] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4256] <... mount resumed>) = 0 [pid 4255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4255] <... futex resumed>) = 0 [pid 4256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4255] <... futex resumed>) = 0 [pid 4256] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4256] <... mount resumed>) = 0 [pid 4256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4255] <... futex resumed>) = 0 [pid 4256] umount2("./file0", MNT_DETACH [pid 4255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4255] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4256] <... umount2 resumed>) = 0 [pid 4255] <... futex resumed>) = 0 [pid 4256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4256] <... futex resumed>) = 0 [pid 4256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4255] <... mmap resumed>) = 0x7fc84e05e000 [pid 4255] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4255] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4257 attached [pid 4257] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4257] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4255] <... clone resumed>, parent_tid=[4257], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4257 [pid 4255] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4255] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4257] <... futex resumed>) = 0 [pid 4257] umount2("./file0", MNT_DETACH) = 0 [pid 4257] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4255] <... futex resumed>) = 0 [pid 4257] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4255] exit_group(0) = ? [pid 4256] <... futex resumed>) = ? [pid 4257] <... futex resumed>) = ? [pid 4257] +++ exited with 0 +++ [pid 4256] +++ exited with 0 +++ [pid 4255] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4258 attached , child_tidptr=0x5555564465d0) = 4258 [pid 4258] set_robust_list(0x5555564465e0, 24) = 0 [pid 4258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4258] setpgid(0, 0) = 0 [pid 4258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4258] write(3, "1000", 4) = 4 [pid 4258] close(3) = 0 [pid 4258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4258] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4258] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4259 attached [pid 4259] set_robust_list(0x7fc84e09f9e0, 24 [pid 4258] <... clone resumed>, parent_tid=[4259], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4259 [pid 4259] <... set_robust_list resumed>) = 0 [pid 4258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4259] mkdir("./file0", 000 [pid 4258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4259] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4258] <... futex resumed>) = 0 [pid 4258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4259] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4258] <... futex resumed>) = 0 [pid 4259] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4259] <... mount resumed>) = 0 [pid 4259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4258] <... futex resumed>) = 0 [pid 4258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4259] umount2("./file0", MNT_DETACH [pid 4258] <... futex resumed>) = 0 [pid 4258] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4258] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4258] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4260], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4260 [pid 4258] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4258] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4260 attached [pid 4260] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4260] umount2("./file0", MNT_DETACH [pid 4259] <... umount2 resumed>) = 0 [pid 4260] <... umount2 resumed>) = 0 [pid 4260] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4258] <... futex resumed>) = 0 [pid 4260] <... futex resumed>) = 1 [pid 4259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4260] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4259] <... futex resumed>) = 0 [pid 4259] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4258] exit_group(0) = ? [pid 4260] <... futex resumed>) = ? [pid 4259] <... futex resumed>) = ? [pid 4260] +++ exited with 0 +++ [pid 4259] +++ exited with 0 +++ [pid 4258] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4261 ./strace-static-x86_64: Process 4261 attached [pid 4261] set_robust_list(0x5555564465e0, 24) = 0 [pid 4261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4261] setpgid(0, 0) = 0 [pid 4261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4261] write(3, "1000", 4) = 4 [pid 4261] close(3) = 0 [pid 4261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4261] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4261] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4262 attached [pid 4262] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4261] <... clone resumed>, parent_tid=[4262], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4262 [pid 4261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4262] <... futex resumed>) = 0 [pid 4262] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4262] <... futex resumed>) = 0 [pid 4262] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4262] <... futex resumed>) = 0 [pid 4262] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4262] <... mount resumed>) = 0 [pid 4262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4261] <... futex resumed>) = 0 [pid 4261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4262] <... futex resumed>) = 0 [pid 4262] umount2("./file0", MNT_DETACH [pid 4261] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4262] <... umount2 resumed>) = 0 [pid 4261] <... futex resumed>) = 0 [pid 4262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4262] <... futex resumed>) = 0 [pid 4261] <... mmap resumed>) = 0x7fc84e05e000 [pid 4262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4261] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4261] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4263], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4263 [pid 4261] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4261] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4263 attached [pid 4263] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4263] umount2("./file0", MNT_DETACH) = 0 [pid 4263] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4261] <... futex resumed>) = 0 [pid 4261] exit_group(0 [pid 4262] <... futex resumed>) = ? [pid 4261] <... exit_group resumed>) = ? [pid 4262] +++ exited with 0 +++ [pid 4263] <... futex resumed>) = ? [pid 4263] +++ exited with 0 +++ [pid 4261] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4261, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4264 ./strace-static-x86_64: Process 4264 attached [pid 4264] set_robust_list(0x5555564465e0, 24) = 0 [pid 4264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4264] setpgid(0, 0) = 0 [pid 4264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4264] write(3, "1000", 4) = 4 [pid 4264] close(3) = 0 [pid 4264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4264] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4264] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4265 attached , parent_tid=[4265], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4265 [pid 4265] set_robust_list(0x7fc84e09f9e0, 24 [pid 4264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4265] <... set_robust_list resumed>) = 0 [pid 4264] <... futex resumed>) = 0 [pid 4264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4265] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4264] <... futex resumed>) = 0 [pid 4265] <... futex resumed>) = 1 [pid 4264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4265] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4264] <... futex resumed>) = 0 [pid 4264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4265] <... mount resumed>) = 0 [pid 4265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4264] <... futex resumed>) = 0 [pid 4265] <... futex resumed>) = 1 [pid 4264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4265] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4264] <... futex resumed>) = 0 [pid 4264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4265] <... mount resumed>) = 0 [pid 4265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4264] <... futex resumed>) = 0 [pid 4265] <... futex resumed>) = 1 [pid 4264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4265] umount2("./file0", MNT_DETACH [pid 4264] <... futex resumed>) = 0 [pid 4264] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4264] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4264] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4265] <... umount2 resumed>) = 0 [pid 4265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4266 attached ) = 0 [pid 4264] <... clone resumed>, parent_tid=[4266], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4266 [pid 4266] set_robust_list(0x7fc84e07e9e0, 24 [pid 4265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4266] <... set_robust_list resumed>) = 0 [pid 4264] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4266] umount2("./file0", MNT_DETACH [pid 4264] <... futex resumed>) = 0 [pid 4264] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4266] <... umount2 resumed>) = 0 [pid 4266] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4264] <... futex resumed>) = 0 [pid 4266] <... futex resumed>) = 1 [pid 4264] exit_group(0) = ? [pid 4265] <... futex resumed>) = ? [pid 4265] +++ exited with 0 +++ [pid 4266] +++ exited with 0 +++ [pid 4264] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4264, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4267 ./strace-static-x86_64: Process 4267 attached [pid 4267] set_robust_list(0x5555564465e0, 24) = 0 [pid 4267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4267] setpgid(0, 0) = 0 [pid 4267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4267] write(3, "1000", 4) = 4 [pid 4267] close(3) = 0 [pid 4267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4267] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4267] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4268], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4268 ./strace-static-x86_64: Process 4268 attached [pid 4267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4268] set_robust_list(0x7fc84e09f9e0, 24 [pid 4267] <... futex resumed>) = 0 [pid 4268] <... set_robust_list resumed>) = 0 [pid 4268] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4268] <... futex resumed>) = 0 [pid 4268] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4268] <... mount resumed>) = 0 [pid 4268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4267] <... futex resumed>) = 0 [pid 4267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4268] <... futex resumed>) = 0 [pid 4268] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4268] <... mount resumed>) = 0 [pid 4268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4267] <... futex resumed>) = 0 [pid 4268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4268] <... futex resumed>) = 0 [pid 4267] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4268] umount2("./file0", MNT_DETACH [pid 4267] <... futex resumed>) = 0 [pid 4267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4267] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4268] <... umount2 resumed>) = 0 [pid 4268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4267] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4268] <... futex resumed>) = 0 [pid 4268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4269 attached [pid 4267] <... clone resumed>, parent_tid=[4269], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4269 [pid 4267] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4267] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4269] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4269] umount2("./file0", MNT_DETACH) = 0 [pid 4269] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4267] <... futex resumed>) = 0 [pid 4267] exit_group(0) = ? [pid 4268] <... futex resumed>) = ? [pid 4268] +++ exited with 0 +++ [pid 4269] +++ exited with 0 +++ [pid 4267] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4270 ./strace-static-x86_64: Process 4270 attached [pid 4270] set_robust_list(0x5555564465e0, 24) = 0 [pid 4270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4270] setpgid(0, 0) = 0 [pid 4270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4270] write(3, "1000", 4) = 4 [pid 4270] close(3) = 0 [pid 4270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4270] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4270] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4271], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4271 [pid 4270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4271 attached [pid 4271] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4271] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4270] <... futex resumed>) = 0 [pid 4270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4271] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4270] <... futex resumed>) = 0 [pid 4270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4271] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4270] <... futex resumed>) = 0 [pid 4270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4270] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4271] umount2("./file0", MNT_DETACH [pid 4270] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4272], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4272 [pid 4270] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4270] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4272 attached [pid 4272] set_robust_list(0x7fc84e07e9e0, 24 [pid 4271] <... umount2 resumed>) = 0 [pid 4272] <... set_robust_list resumed>) = 0 [pid 4272] umount2("./file0", MNT_DETACH [pid 4271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4272] <... umount2 resumed>) = 0 [pid 4271] <... futex resumed>) = 0 [pid 4272] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4270] <... futex resumed>) = 0 [pid 4270] exit_group(0) = ? [pid 4272] <... futex resumed>) = ? [pid 4272] +++ exited with 0 +++ [pid 4271] +++ exited with 0 +++ [pid 4270] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4270, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4273 ./strace-static-x86_64: Process 4273 attached [pid 4273] set_robust_list(0x5555564465e0, 24) = 0 [pid 4273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4273] setpgid(0, 0) = 0 [pid 4273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4273] write(3, "1000", 4) = 4 [pid 4273] close(3) = 0 [pid 4273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4273] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4273] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4274 attached , parent_tid=[4274], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4274 [pid 4274] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4274] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4274] <... futex resumed>) = 0 [pid 4273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4274] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4274] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4274] <... futex resumed>) = 0 [pid 4273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4274] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4273] <... futex resumed>) = 0 [pid 4273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4274] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4273] <... futex resumed>) = 0 [pid 4273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4273] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4273] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4274] umount2("./file0", MNT_DETACH [pid 4273] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4275], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4275 [pid 4274] <... umount2 resumed>) = 0 [pid 4273] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4273] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4275 attached [pid 4275] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4275] umount2("./file0", MNT_DETACH [pid 4274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4275] <... umount2 resumed>) = 0 [pid 4274] <... futex resumed>) = 0 [pid 4275] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4273] <... futex resumed>) = 0 [pid 4273] exit_group(0) = ? [pid 4275] <... futex resumed>) = ? [pid 4274] +++ exited with 0 +++ [pid 4275] +++ exited with 0 +++ [pid 4273] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4273, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4276 ./strace-static-x86_64: Process 4276 attached [pid 4276] set_robust_list(0x5555564465e0, 24) = 0 [pid 4276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4276] setpgid(0, 0) = 0 [pid 4276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4276] write(3, "1000", 4) = 4 [pid 4276] close(3) = 0 [pid 4276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4276] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4276] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4277], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4277 [pid 4276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4277 attached [pid 4277] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4277] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4276] <... futex resumed>) = 0 [pid 4276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4277] <... futex resumed>) = 1 [pid 4277] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4276] <... futex resumed>) = 0 [pid 4277] <... futex resumed>) = 1 [pid 4276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4277] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4276] <... futex resumed>) = 0 [pid 4276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4277] <... mount resumed>) = 0 [pid 4277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4276] <... futex resumed>) = 0 [pid 4276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4276] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4277] umount2("./file0", MNT_DETACH [pid 4276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4276] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4276] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4278], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4278 [pid 4276] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4276] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4278 attached [pid 4278] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4278] umount2("./file0", MNT_DETACH [pid 4277] <... umount2 resumed>) = 0 [pid 4278] <... umount2 resumed>) = 0 [pid 4277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4278] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4276] <... futex resumed>) = 0 [pid 4276] exit_group(0) = ? [pid 4277] <... futex resumed>) = ? [pid 4278] <... futex resumed>) = ? [pid 4278] +++ exited with 0 +++ [pid 4277] +++ exited with 0 +++ [pid 4276] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4276, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4279 ./strace-static-x86_64: Process 4279 attached [pid 4279] set_robust_list(0x5555564465e0, 24) = 0 [pid 4279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4279] setpgid(0, 0) = 0 [pid 4279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4279] write(3, "1000", 4) = 4 [pid 4279] close(3) = 0 [pid 4279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4279] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4279] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4280 attached , parent_tid=[4280], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4280 [pid 4280] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4280] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4280] <... futex resumed>) = 0 [pid 4280] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4280] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4280] <... futex resumed>) = 0 [pid 4280] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4280] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4279] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4280] <... futex resumed>) = 0 [pid 4280] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4279] <... futex resumed>) = 0 [pid 4280] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4280] umount2("./file0", MNT_DETACH [pid 4279] <... futex resumed>) = 0 [pid 4279] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4280] <... umount2 resumed>) = 0 [pid 4279] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4279] <... mprotect resumed>) = 0 [pid 4280] <... futex resumed>) = 0 [pid 4279] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4280] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4281 attached [pid 4279] <... clone resumed>, parent_tid=[4281], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4281 [pid 4281] set_robust_list(0x7fc84e07e9e0, 24 [pid 4279] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4281] <... set_robust_list resumed>) = 0 [pid 4279] <... futex resumed>) = 0 [pid 4281] umount2("./file0", MNT_DETACH [pid 4279] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4281] <... umount2 resumed>) = 0 [pid 4281] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4279] <... futex resumed>) = 0 [pid 4279] exit_group(0 [pid 4281] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4279] <... exit_group resumed>) = ? [pid 4280] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4281] <... futex resumed>) = ? [pid 4280] +++ exited with 0 +++ [pid 4281] +++ exited with 0 +++ [pid 4279] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4279, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4282 ./strace-static-x86_64: Process 4282 attached [pid 4282] set_robust_list(0x5555564465e0, 24) = 0 [pid 4282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4282] setpgid(0, 0) = 0 [pid 4282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4282] write(3, "1000", 4) = 4 [pid 4282] close(3) = 0 [pid 4282] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4282] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4282] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4283 attached , parent_tid=[4283], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4283 [pid 4283] set_robust_list(0x7fc84e09f9e0, 24 [pid 4282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4283] <... set_robust_list resumed>) = 0 [pid 4282] <... futex resumed>) = 0 [pid 4282] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4283] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4282] <... futex resumed>) = 0 [pid 4283] <... futex resumed>) = 1 [pid 4282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4283] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4282] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4283] <... mount resumed>) = 0 [pid 4283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4282] <... futex resumed>) = 0 [pid 4283] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4282] <... futex resumed>) = 0 [pid 4283] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4282] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4283] <... mount resumed>) = 0 [pid 4283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4282] <... futex resumed>) = 0 [pid 4282] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4282] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4282] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4282] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4284], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4284 [pid 4283] umount2("./file0", MNT_DETACH [pid 4282] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4282] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4284 attached [pid 4284] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4284] umount2("./file0", MNT_DETACH [pid 4283] <... umount2 resumed>) = 0 [pid 4283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4284] <... umount2 resumed>) = 0 [pid 4284] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4282] <... futex resumed>) = 0 [pid 4282] exit_group(0) = ? [pid 4284] <... futex resumed>) = ? [pid 4284] +++ exited with 0 +++ [pid 4283] <... futex resumed>) = ? [pid 4283] +++ exited with 0 +++ [pid 4282] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4282, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4285 ./strace-static-x86_64: Process 4285 attached [pid 4285] set_robust_list(0x5555564465e0, 24) = 0 [pid 4285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4285] setpgid(0, 0) = 0 [pid 4285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4285] write(3, "1000", 4) = 4 [pid 4285] close(3) = 0 [pid 4285] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4285] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4285] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4286], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4286 ./strace-static-x86_64: Process 4286 attached [pid 4285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4286] set_robust_list(0x7fc84e09f9e0, 24 [pid 4285] <... futex resumed>) = 0 [pid 4286] <... set_robust_list resumed>) = 0 [pid 4285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4286] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4285] <... futex resumed>) = 0 [pid 4286] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4286] <... mount resumed>) = 0 [pid 4285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4285] <... futex resumed>) = 0 [pid 4285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4285] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4286] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4285] <... futex resumed>) = 0 [pid 4285] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4285] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4285] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4286] umount2("./file0", MNT_DETACH [pid 4285] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4287], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4287 [pid 4285] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4285] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4287 attached [pid 4286] <... umount2 resumed>) = 0 [pid 4287] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4287] umount2("./file0", MNT_DETACH [pid 4286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4287] <... umount2 resumed>) = 0 [pid 4287] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4285] <... futex resumed>) = 0 [pid 4285] exit_group(0 [pid 4286] <... futex resumed>) = 0 [pid 4285] <... exit_group resumed>) = ? [pid 4287] <... futex resumed>) = ? [pid 4286] +++ exited with 0 +++ [pid 4287] +++ exited with 0 +++ [pid 4285] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4285, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4288 attached , child_tidptr=0x5555564465d0) = 4288 [pid 4288] set_robust_list(0x5555564465e0, 24) = 0 [pid 4288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4288] setpgid(0, 0) = 0 [pid 4288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4288] write(3, "1000", 4) = 4 [pid 4288] close(3) = 0 [pid 4288] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4288] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4288] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4289 attached , parent_tid=[4289], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4289 [pid 4289] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4289] <... futex resumed>) = 0 [pid 4288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4289] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4288] <... futex resumed>) = 0 [pid 4288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4289] <... futex resumed>) = 0 [pid 4289] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4289] <... futex resumed>) = 0 [pid 4289] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4288] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4289] <... mount resumed>) = 0 [pid 4289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4288] <... futex resumed>) = 0 [pid 4288] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4288] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4289] <... futex resumed>) = 0 [pid 4288] <... futex resumed>) = 0 [pid 4289] umount2("./file0", MNT_DETACH [pid 4288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4288] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4289] <... umount2 resumed>) = 0 [pid 4289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4288] <... mprotect resumed>) = 0 [pid 4289] <... futex resumed>) = 0 [pid 4289] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4288] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4290 attached [pid 4290] set_robust_list(0x7fc84e07e9e0, 24 [pid 4288] <... clone resumed>, parent_tid=[4290], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4290 [pid 4288] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4290] <... set_robust_list resumed>) = 0 [pid 4290] umount2("./file0", MNT_DETACH [pid 4288] <... futex resumed>) = 0 [pid 4288] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4290] <... umount2 resumed>) = 0 [pid 4290] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4288] <... futex resumed>) = 0 [pid 4290] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4288] exit_group(0) = ? [pid 4289] <... futex resumed>) = ? [pid 4289] +++ exited with 0 +++ [pid 4290] <... futex resumed>) = ? [pid 4290] +++ exited with 0 +++ [pid 4288] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4288, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4291 ./strace-static-x86_64: Process 4291 attached [pid 4291] set_robust_list(0x5555564465e0, 24) = 0 [pid 4291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4291] setpgid(0, 0) = 0 [pid 4291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4291] write(3, "1000", 4) = 4 [pid 4291] close(3) = 0 [pid 4291] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4291] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4291] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4292 attached , parent_tid=[4292], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4292 [pid 4292] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4292] <... futex resumed>) = 0 [pid 4292] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4292] <... futex resumed>) = 0 [pid 4291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4292] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4291] <... futex resumed>) = 0 [pid 4292] <... mount resumed>) = 0 [pid 4292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4292] <... futex resumed>) = 0 [pid 4291] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4292] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4291] <... futex resumed>) = 0 [pid 4292] umount2("./file0", MNT_DETACH [pid 4291] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4291] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4291] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4291] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4292] <... umount2 resumed>) = 0 [pid 4292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4291] <... clone resumed>, parent_tid=[4293], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4293 [pid 4292] <... futex resumed>) = 0 [pid 4291] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4292] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4291] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4293 attached [pid 4293] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4293] umount2("./file0", MNT_DETACH) = 0 [pid 4293] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4291] <... futex resumed>) = 0 [pid 4291] exit_group(0) = ? [pid 4292] <... futex resumed>) = ? [pid 4292] +++ exited with 0 +++ [pid 4293] +++ exited with 0 +++ [pid 4291] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4291, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4294 attached , child_tidptr=0x5555564465d0) = 4294 [pid 4294] set_robust_list(0x5555564465e0, 24) = 0 [pid 4294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4294] setpgid(0, 0) = 0 [pid 4294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4294] write(3, "1000", 4) = 4 [pid 4294] close(3) = 0 [pid 4294] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4294] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4294] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4295], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4295 [pid 4294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4295 attached [pid 4295] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4295] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4294] <... futex resumed>) = 0 [pid 4294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4295] <... futex resumed>) = 1 [pid 4295] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4294] <... futex resumed>) = 0 [pid 4294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4295] <... futex resumed>) = 1 [pid 4295] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4294] <... futex resumed>) = 0 [pid 4294] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4294] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4294] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4296 attached , parent_tid=[4296], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4296 [pid 4294] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4294] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4295] <... futex resumed>) = 1 [pid 4295] umount2("./file0", MNT_DETACH [pid 4296] set_robust_list(0x7fc84e07e9e0, 24 [pid 4295] <... umount2 resumed>) = 0 [pid 4296] <... set_robust_list resumed>) = 0 [pid 4295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4295] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4296] umount2("./file0", MNT_DETACH) = 0 [pid 4296] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4294] <... futex resumed>) = 0 [pid 4294] exit_group(0 [pid 4296] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4294] <... exit_group resumed>) = ? [pid 4295] <... futex resumed>) = ? [pid 4295] +++ exited with 0 +++ [pid 4296] <... futex resumed>) = ? [pid 4296] +++ exited with 0 +++ [pid 4294] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4294, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4297 ./strace-static-x86_64: Process 4297 attached [pid 4297] set_robust_list(0x5555564465e0, 24) = 0 [pid 4297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4297] setpgid(0, 0) = 0 [pid 4297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4297] write(3, "1000", 4) = 4 [pid 4297] close(3) = 0 [pid 4297] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4297] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4297] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4298], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4298 [pid 4297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4298 attached [pid 4298] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4298] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4297] <... futex resumed>) = 0 [pid 4297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4298] <... futex resumed>) = 1 [pid 4298] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4297] <... futex resumed>) = 0 [pid 4297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4298] <... futex resumed>) = 1 [pid 4298] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4297] <... futex resumed>) = 0 [pid 4297] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4297] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4297] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4299], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4299 [pid 4297] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4297] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4298] <... futex resumed>) = 1 [pid 4298] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4299 attached ) = 0 [pid 4298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4299] set_robust_list(0x7fc84e07e9e0, 24 [pid 4298] <... futex resumed>) = 0 [pid 4299] <... set_robust_list resumed>) = 0 [pid 4298] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4299] umount2("./file0", MNT_DETACH) = 0 [pid 4299] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4297] <... futex resumed>) = 0 [pid 4299] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4297] exit_group(0) = ? [pid 4299] <... futex resumed>) = ? [pid 4298] <... futex resumed>) = ? [pid 4298] +++ exited with 0 +++ [pid 4299] +++ exited with 0 +++ [pid 4297] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4297, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4300 attached , child_tidptr=0x5555564465d0) = 4300 [pid 4300] set_robust_list(0x5555564465e0, 24) = 0 [pid 4300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4300] setpgid(0, 0) = 0 [pid 4300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4300] write(3, "1000", 4) = 4 [pid 4300] close(3) = 0 [pid 4300] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4300] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4300] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4301 attached [pid 4301] set_robust_list(0x7fc84e09f9e0, 24 [pid 4300] <... clone resumed>, parent_tid=[4301], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4301 [pid 4301] <... set_robust_list resumed>) = 0 [pid 4300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4301] mkdir("./file0", 000 [pid 4300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4301] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4300] <... futex resumed>) = 0 [pid 4301] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4301] <... mount resumed>) = 0 [pid 4301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4300] <... futex resumed>) = 0 [pid 4300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4300] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4301] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4300] <... futex resumed>) = 0 [pid 4300] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4300] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4300] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4300] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4301] umount2("./file0", MNT_DETACH [pid 4300] <... clone resumed>, parent_tid=[4302], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4302 [pid 4300] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4300] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4302 attached [pid 4302] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4302] umount2("./file0", MNT_DETACH [pid 4301] <... umount2 resumed>) = 0 [pid 4301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4302] <... umount2 resumed>) = 0 [pid 4302] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4300] <... futex resumed>) = 0 [pid 4301] <... futex resumed>) = 0 [pid 4300] exit_group(0) = ? [pid 4302] <... futex resumed>) = ? [pid 4302] +++ exited with 0 +++ [pid 4301] +++ exited with 0 +++ [pid 4300] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4300, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4303 ./strace-static-x86_64: Process 4303 attached [pid 4303] set_robust_list(0x5555564465e0, 24) = 0 [pid 4303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4303] setpgid(0, 0) = 0 [pid 4303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4303] write(3, "1000", 4) = 4 [pid 4303] close(3) = 0 [pid 4303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4303] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4303] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4304 attached [pid 4304] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] <... clone resumed>, parent_tid=[4304], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4304 [pid 4303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4304] <... futex resumed>) = 0 [pid 4303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4304] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4304] <... futex resumed>) = 0 [pid 4304] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4304] <... mount resumed>) = 0 [pid 4304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4304] <... futex resumed>) = 0 [pid 4304] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4304] <... mount resumed>) = 0 [pid 4304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] <... futex resumed>) = 0 [pid 4303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4304] <... futex resumed>) = 0 [pid 4304] umount2("./file0", MNT_DETACH) = 0 [pid 4304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4303] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4304] <... futex resumed>) = 0 [pid 4303] <... futex resumed>) = 0 [pid 4304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4303] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4303] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4305 attached , parent_tid=[4305], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4305 [pid 4305] set_robust_list(0x7fc84e07e9e0, 24 [pid 4303] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4305] <... set_robust_list resumed>) = 0 [pid 4305] umount2("./file0", MNT_DETACH) = 0 [pid 4305] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4305] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] <... futex resumed>) = 1 [pid 4305] <... futex resumed>) = 0 [pid 4305] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4303] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4303] exit_group(0 [pid 4304] <... futex resumed>) = ? [pid 4303] <... exit_group resumed>) = ? [pid 4305] <... futex resumed>) = ? [pid 4304] +++ exited with 0 +++ [pid 4305] +++ exited with 0 +++ [pid 4303] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4303, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4306 ./strace-static-x86_64: Process 4306 attached [pid 4306] set_robust_list(0x5555564465e0, 24) = 0 [pid 4306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4306] setpgid(0, 0) = 0 [pid 4306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4306] write(3, "1000", 4) = 4 [pid 4306] close(3) = 0 [pid 4306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4306] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4306] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4307 attached [pid 4307] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] <... clone resumed>, parent_tid=[4307], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4307 [pid 4306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4307] <... futex resumed>) = 0 [pid 4307] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4307] <... futex resumed>) = 0 [pid 4307] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4307] <... futex resumed>) = 0 [pid 4307] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4307] <... mount resumed>) = 0 [pid 4307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4307] <... futex resumed>) = 0 [pid 4307] umount2("./file0", MNT_DETACH [pid 4306] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4307] <... umount2 resumed>) = 0 [pid 4307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] <... futex resumed>) = 0 [pid 4306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4306] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4306] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4308 attached , parent_tid=[4308], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4308 [pid 4308] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4308] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4308] <... futex resumed>) = 0 [pid 4308] umount2("./file0", MNT_DETACH [pid 4306] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4308] <... umount2 resumed>) = 0 [pid 4308] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4308] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4306] exit_group(0 [pid 4307] <... futex resumed>) = ? [pid 4306] <... exit_group resumed>) = ? [pid 4307] +++ exited with 0 +++ [pid 4308] <... futex resumed>) = ? [pid 4308] +++ exited with 0 +++ [pid 4306] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4306, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4309 attached , child_tidptr=0x5555564465d0) = 4309 [pid 4309] set_robust_list(0x5555564465e0, 24) = 0 [pid 4309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4309] setpgid(0, 0) = 0 [pid 4309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4309] write(3, "1000", 4) = 4 [pid 4309] close(3) = 0 [pid 4309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4309] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4309] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4310], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4310 [pid 4309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4310 attached [pid 4310] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4310] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4309] <... futex resumed>) = 0 [pid 4309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4310] <... futex resumed>) = 1 [pid 4310] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4309] <... futex resumed>) = 0 [pid 4309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4310] <... futex resumed>) = 1 [pid 4310] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4309] <... futex resumed>) = 0 [pid 4310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4310] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4309] <... futex resumed>) = 0 [pid 4310] umount2("./file0", MNT_DETACH [pid 4309] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4309] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4309] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4310] <... umount2 resumed>) = 0 [pid 4310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4311 attached [pid 4309] <... clone resumed>, parent_tid=[4311], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4311 [pid 4311] set_robust_list(0x7fc84e07e9e0, 24 [pid 4310] <... futex resumed>) = 0 [pid 4311] <... set_robust_list resumed>) = 0 [pid 4309] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4311] umount2("./file0", MNT_DETACH [pid 4309] <... futex resumed>) = 0 [pid 4309] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4311] <... umount2 resumed>) = 0 [pid 4311] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4309] <... futex resumed>) = 0 [pid 4309] exit_group(0 [pid 4311] ????( [pid 4309] <... exit_group resumed>) = ? [pid 4311] <... ???? resumed>) = ? [pid 4310] <... futex resumed>) = ? [pid 4310] +++ exited with 0 +++ [pid 4311] +++ exited with 0 +++ [pid 4309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4309, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4312 ./strace-static-x86_64: Process 4312 attached [pid 4312] set_robust_list(0x5555564465e0, 24) = 0 [pid 4312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4312] setpgid(0, 0) = 0 [pid 4312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4312] write(3, "1000", 4) = 4 [pid 4312] close(3) = 0 [pid 4312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4312] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4312] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4313 attached , parent_tid=[4313], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4313 [pid 4313] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4313] <... futex resumed>) = 0 [pid 4313] mkdir("./file0", 000 [pid 4312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4313] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4312] <... futex resumed>) = 0 [pid 4313] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4313] <... mount resumed>) = 0 [pid 4312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4312] <... futex resumed>) = 0 [pid 4312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4313] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4312] <... futex resumed>) = 0 [pid 4312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4313] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4312] <... futex resumed>) = 0 [pid 4312] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4312] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4312] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4313] umount2("./file0", MNT_DETACH [pid 4312] <... clone resumed>, parent_tid=[4314], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4314 [pid 4312] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4312] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4314 attached [pid 4314] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4314] umount2("./file0", MNT_DETACH [pid 4313] <... umount2 resumed>) = 0 [pid 4313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4314] <... umount2 resumed>) = 0 [pid 4314] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4312] <... futex resumed>) = 0 [pid 4312] exit_group(0) = ? [pid 4313] <... futex resumed>) = ? [pid 4314] <... futex resumed>) = ? [pid 4314] +++ exited with 0 +++ [pid 4313] +++ exited with 0 +++ [pid 4312] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4315 ./strace-static-x86_64: Process 4315 attached [pid 4315] set_robust_list(0x5555564465e0, 24) = 0 [pid 4315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4315] setpgid(0, 0) = 0 [pid 4315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4315] write(3, "1000", 4) = 4 [pid 4315] close(3) = 0 [pid 4315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4315] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4315] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4316 attached , parent_tid=[4316], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4316 [pid 4316] set_robust_list(0x7fc84e09f9e0, 24 [pid 4315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4316] <... set_robust_list resumed>) = 0 [pid 4316] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4315] <... futex resumed>) = 1 [pid 4316] <... futex resumed>) = 0 [pid 4315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4316] <... futex resumed>) = 0 [pid 4316] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4316] <... mount resumed>) = 0 [pid 4316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4315] <... futex resumed>) = 0 [pid 4315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4316] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4315] <... futex resumed>) = 0 [pid 4316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4315] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4315] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4315] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4317], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4317 [pid 4315] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4315] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4317 attached [pid 4317] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4317] umount2("./file0", MNT_DETACH [pid 4316] umount2("./file0", MNT_DETACH [pid 4317] <... umount2 resumed>) = 0 [pid 4317] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4316] <... umount2 resumed>) = 0 [pid 4315] <... futex resumed>) = 0 [pid 4317] <... futex resumed>) = 1 [pid 4317] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4315] exit_group(0) = ? [pid 4316] <... futex resumed>) = ? [pid 4316] +++ exited with 0 +++ [pid 4317] <... futex resumed>) = ? [pid 4317] +++ exited with 0 +++ [pid 4315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4318 ./strace-static-x86_64: Process 4318 attached [pid 4318] set_robust_list(0x5555564465e0, 24) = 0 [pid 4318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4318] setpgid(0, 0) = 0 [pid 4318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4318] write(3, "1000", 4) = 4 [pid 4318] close(3) = 0 [pid 4318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4318] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4318] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4319 attached , parent_tid=[4319], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4319 [pid 4319] set_robust_list(0x7fc84e09f9e0, 24 [pid 4318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4319] <... set_robust_list resumed>) = 0 [pid 4318] <... futex resumed>) = 0 [pid 4319] mkdir("./file0", 000 [pid 4318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4319] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4318] <... futex resumed>) = 0 [pid 4319] <... futex resumed>) = 1 [pid 4318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4319] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4318] <... futex resumed>) = 0 [pid 4318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4319] <... futex resumed>) = 1 [pid 4319] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4318] <... futex resumed>) = 0 [pid 4318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4318] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4318] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4318] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4320], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4320 [pid 4319] <... futex resumed>) = 1 [pid 4318] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4318] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4320 attached [pid 4320] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4320] umount2("./file0", MNT_DETACH [pid 4319] umount2("./file0", MNT_DETACH [pid 4320] <... umount2 resumed>) = 0 [pid 4320] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4318] <... futex resumed>) = 0 [pid 4319] <... umount2 resumed>) = 0 [pid 4319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4320] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4319] <... futex resumed>) = 0 [pid 4319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4318] exit_group(0) = ? [pid 4320] <... futex resumed>) = ? [pid 4320] +++ exited with 0 +++ [pid 4319] <... futex resumed>) = ? [pid 4319] +++ exited with 0 +++ [pid 4318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4321 ./strace-static-x86_64: Process 4321 attached [pid 4321] set_robust_list(0x5555564465e0, 24) = 0 [pid 4321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4321] setpgid(0, 0) = 0 [pid 4321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4321] write(3, "1000", 4) = 4 [pid 4321] close(3) = 0 [pid 4321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4321] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4321] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4322], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4322 [pid 4321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4322 attached [pid 4322] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4322] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4321] <... futex resumed>) = 0 [pid 4321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4322] <... futex resumed>) = 1 [pid 4322] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4321] <... futex resumed>) = 0 [pid 4321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4322] <... futex resumed>) = 1 [pid 4322] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4321] <... futex resumed>) = 0 [pid 4321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4321] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4321] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4323], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4323 [pid 4321] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4321] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4322] <... futex resumed>) = 1 [pid 4322] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4323 attached [pid 4323] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4323] umount2("./file0", MNT_DETACH [pid 4322] <... umount2 resumed>) = 0 [pid 4323] <... umount2 resumed>) = 0 [pid 4322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4323] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4322] <... futex resumed>) = 0 [pid 4322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4321] <... futex resumed>) = 0 [pid 4321] exit_group(0) = ? [pid 4322] <... futex resumed>) = ? [pid 4322] +++ exited with 0 +++ [pid 4323] <... futex resumed>) = ? [pid 4323] +++ exited with 0 +++ [pid 4321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4324 ./strace-static-x86_64: Process 4324 attached [pid 4324] set_robust_list(0x5555564465e0, 24) = 0 [pid 4324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4324] setpgid(0, 0) = 0 [pid 4324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4324] write(3, "1000", 4) = 4 [pid 4324] close(3) = 0 [pid 4324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4324] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4324] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4325], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4325 [pid 4324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4325 attached [pid 4325] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4325] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4324] <... futex resumed>) = 0 [pid 4324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4325] <... futex resumed>) = 1 [pid 4325] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4324] <... futex resumed>) = 0 [pid 4324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4325] <... futex resumed>) = 1 [pid 4325] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4324] <... futex resumed>) = 0 [pid 4324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4325] umount2("./file0", MNT_DETACH [pid 4324] <... futex resumed>) = 0 [pid 4324] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4324] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4324] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4325] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4326 attached [pid 4326] set_robust_list(0x7fc84e07e9e0, 24 [pid 4325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4324] <... clone resumed>, parent_tid=[4326], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4326 [pid 4326] <... set_robust_list resumed>) = 0 [pid 4325] <... futex resumed>) = 0 [pid 4324] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4324] <... futex resumed>) = 0 [pid 4326] umount2("./file0", MNT_DETACH [pid 4324] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4326] <... umount2 resumed>) = 0 [pid 4326] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4324] <... futex resumed>) = 0 [pid 4326] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4324] exit_group(0 [pid 4325] <... futex resumed>) = ? [pid 4324] <... exit_group resumed>) = ? [pid 4325] +++ exited with 0 +++ [pid 4326] <... futex resumed>) = ? [pid 4326] +++ exited with 0 +++ [pid 4324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4327 attached , child_tidptr=0x5555564465d0) = 4327 [pid 4327] set_robust_list(0x5555564465e0, 24) = 0 [pid 4327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4327] setpgid(0, 0) = 0 [pid 4327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4327] write(3, "1000", 4) = 4 [pid 4327] close(3) = 0 [pid 4327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4327] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4327] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4328 attached , parent_tid=[4328], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4328 [pid 4328] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4328] <... futex resumed>) = 0 [pid 4328] mkdir("./file0", 000 [pid 4327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4328] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4327] <... futex resumed>) = 0 [pid 4327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4328] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4327] <... futex resumed>) = 0 [pid 4327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4328] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4327] <... futex resumed>) = 0 [pid 4327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4327] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4327] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4327] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4328] umount2("./file0", MNT_DETACH [pid 4327] <... clone resumed>, parent_tid=[4329], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4329 [pid 4327] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4327] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4328] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4329 attached [pid 4329] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4329] umount2("./file0", MNT_DETACH [pid 4328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4329] <... umount2 resumed>) = 0 [pid 4328] <... futex resumed>) = 0 [pid 4329] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4327] <... futex resumed>) = 0 [pid 4327] exit_group(0) = ? [pid 4329] <... futex resumed>) = ? [pid 4328] +++ exited with 0 +++ [pid 4329] +++ exited with 0 +++ [pid 4327] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4327, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4330 ./strace-static-x86_64: Process 4330 attached [pid 4330] set_robust_list(0x5555564465e0, 24) = 0 [pid 4330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4330] setpgid(0, 0) = 0 [pid 4330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4330] write(3, "1000", 4) = 4 [pid 4330] close(3) = 0 [pid 4330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4330] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4330] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4331 attached , parent_tid=[4331], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4331 [pid 4331] set_robust_list(0x7fc84e09f9e0, 24 [pid 4330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4331] <... set_robust_list resumed>) = 0 [pid 4330] <... futex resumed>) = 0 [pid 4330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4331] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4330] <... futex resumed>) = 0 [pid 4331] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4331] <... mount resumed>) = 0 [pid 4331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4330] <... futex resumed>) = 0 [pid 4330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4331] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4330] <... futex resumed>) = 0 [pid 4331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4330] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4330] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4330] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4332], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4332 [pid 4331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4330] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4330] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4332 attached [pid 4332] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4332] umount2("./file0", MNT_DETACH [pid 4331] umount2("./file0", MNT_DETACH [pid 4332] <... umount2 resumed>) = 0 [pid 4332] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4330] <... futex resumed>) = 0 [pid 4332] <... futex resumed>) = 1 [pid 4332] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4331] <... umount2 resumed>) = 0 [pid 4331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4330] exit_group(0) = ? [pid 4332] <... futex resumed>) = ? [pid 4331] <... futex resumed>) = ? [pid 4332] +++ exited with 0 +++ [pid 4331] +++ exited with 0 +++ [pid 4330] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4330, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4333 ./strace-static-x86_64: Process 4333 attached [pid 4333] set_robust_list(0x5555564465e0, 24) = 0 [pid 4333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4333] setpgid(0, 0) = 0 [pid 4333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4333] write(3, "1000", 4) = 4 [pid 4333] close(3) = 0 [pid 4333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4333] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4333] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4334 attached , parent_tid=[4334], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4334 [pid 4333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4334] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4334] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4333] <... futex resumed>) = 0 [pid 4333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4334] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4333] <... futex resumed>) = 0 [pid 4333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4334] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4333] <... futex resumed>) = 0 [pid 4334] umount2("./file0", MNT_DETACH [pid 4333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4333] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4333] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4334] <... umount2 resumed>) = 0 [pid 4334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4333] <... mprotect resumed>) = 0 [pid 4334] <... futex resumed>) = 0 [pid 4333] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4335 attached [pid 4333] <... clone resumed>, parent_tid=[4335], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4335 [pid 4335] set_robust_list(0x7fc84e07e9e0, 24 [pid 4333] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4335] <... set_robust_list resumed>) = 0 [pid 4333] <... futex resumed>) = 0 [pid 4335] umount2("./file0", MNT_DETACH [pid 4333] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4335] <... umount2 resumed>) = 0 [pid 4335] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4333] <... futex resumed>) = 0 [pid 4335] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4333] exit_group(0) = ? [pid 4334] <... futex resumed>) = ? [pid 4334] +++ exited with 0 +++ [pid 4335] <... futex resumed>) = ? [pid 4335] +++ exited with 0 +++ [pid 4333] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4336 ./strace-static-x86_64: Process 4336 attached [pid 4336] set_robust_list(0x5555564465e0, 24) = 0 [pid 4336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4336] setpgid(0, 0) = 0 [pid 4336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4336] write(3, "1000", 4) = 4 [pid 4336] close(3) = 0 [pid 4336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4336] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4336] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4337 attached , parent_tid=[4337], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4337 [pid 4337] set_robust_list(0x7fc84e09f9e0, 24 [pid 4336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4337] <... set_robust_list resumed>) = 0 [pid 4336] <... futex resumed>) = 0 [pid 4336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4337] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4336] <... futex resumed>) = 0 [pid 4337] <... futex resumed>) = 1 [pid 4336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4337] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4336] <... futex resumed>) = 0 [pid 4336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4337] <... mount resumed>) = 0 [pid 4337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4336] <... futex resumed>) = 0 [pid 4337] <... futex resumed>) = 1 [pid 4336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4337] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4336] <... futex resumed>) = 0 [pid 4336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4337] <... mount resumed>) = 0 [pid 4337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4336] <... futex resumed>) = 0 [pid 4336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4337] umount2("./file0", MNT_DETACH [pid 4336] <... futex resumed>) = 0 [pid 4336] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4336] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4337] <... umount2 resumed>) = 0 [pid 4336] <... mprotect resumed>) = 0 [pid 4336] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4338], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4338 [pid 4337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4336] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4336] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4338 attached [pid 4338] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4338] umount2("./file0", MNT_DETACH [pid 4337] <... futex resumed>) = 0 [pid 4338] <... umount2 resumed>) = 0 [pid 4337] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4338] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4336] <... futex resumed>) = 0 [pid 4336] exit_group(0) = ? [pid 4337] <... futex resumed>) = ? [pid 4338] <... futex resumed>) = ? [pid 4338] +++ exited with 0 +++ [pid 4337] +++ exited with 0 +++ [pid 4336] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4336, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4339 ./strace-static-x86_64: Process 4339 attached [pid 4339] set_robust_list(0x5555564465e0, 24) = 0 [pid 4339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4339] setpgid(0, 0) = 0 [pid 4339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4339] write(3, "1000", 4) = 4 [pid 4339] close(3) = 0 [pid 4339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4339] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4339] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4340], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4340 [pid 4339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4340 attached [pid 4340] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4340] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4339] <... futex resumed>) = 0 [pid 4339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4340] <... futex resumed>) = 1 [pid 4340] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4339] <... futex resumed>) = 0 [pid 4339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4340] <... futex resumed>) = 1 [pid 4340] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4339] <... futex resumed>) = 0 [pid 4340] umount2("./file0", MNT_DETACH [pid 4339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4339] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4339] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4339] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4340] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4341 attached [pid 4340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4339] <... clone resumed>, parent_tid=[4341], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4341 [pid 4341] set_robust_list(0x7fc84e07e9e0, 24 [pid 4339] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4340] <... futex resumed>) = 0 [pid 4339] <... futex resumed>) = 0 [pid 4341] <... set_robust_list resumed>) = 0 [pid 4340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4339] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4341] umount2("./file0", MNT_DETACH) = 0 [pid 4341] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4339] <... futex resumed>) = 0 [pid 4341] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4339] exit_group(0) = ? [pid 4340] <... futex resumed>) = ? [pid 4340] +++ exited with 0 +++ [pid 4341] <... futex resumed>) = ? [pid 4341] +++ exited with 0 +++ [pid 4339] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4339, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4342 ./strace-static-x86_64: Process 4342 attached [pid 4342] set_robust_list(0x5555564465e0, 24) = 0 [pid 4342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4342] setpgid(0, 0) = 0 [pid 4342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4342] write(3, "1000", 4) = 4 [pid 4342] close(3) = 0 [pid 4342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4342] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4342] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4343 attached , parent_tid=[4343], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4343 [pid 4343] set_robust_list(0x7fc84e09f9e0, 24 [pid 4342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4343] <... set_robust_list resumed>) = 0 [pid 4342] <... futex resumed>) = 0 [pid 4342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4343] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4342] <... futex resumed>) = 0 [pid 4343] <... futex resumed>) = 1 [pid 4342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4343] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4342] <... futex resumed>) = 0 [pid 4342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4343] <... mount resumed>) = 0 [pid 4343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4342] <... futex resumed>) = 0 [pid 4343] <... futex resumed>) = 1 [pid 4342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4343] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4342] <... futex resumed>) = 0 [pid 4342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4343] <... mount resumed>) = 0 [pid 4343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4342] <... futex resumed>) = 0 [pid 4343] umount2("./file0", MNT_DETACH [pid 4342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4342] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4342] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4342] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4344], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4344 [pid 4343] <... umount2 resumed>) = 0 [pid 4342] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4342] <... futex resumed>) = 0 [pid 4343] <... futex resumed>) = 0 [pid 4342] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4344 attached [pid 4344] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4344] umount2("./file0", MNT_DETACH) = 0 [pid 4344] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4342] <... futex resumed>) = 0 [pid 4342] exit_group(0) = ? [pid 4343] <... futex resumed>) = ? [pid 4343] +++ exited with 0 +++ [pid 4344] +++ exited with 0 +++ [pid 4342] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4342, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4345 ./strace-static-x86_64: Process 4345 attached [pid 4345] set_robust_list(0x5555564465e0, 24) = 0 [pid 4345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4345] setpgid(0, 0) = 0 [pid 4345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4345] write(3, "1000", 4) = 4 [pid 4345] close(3) = 0 [pid 4345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4345] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4345] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4346 attached , parent_tid=[4346], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4346 [pid 4346] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4346] <... futex resumed>) = 0 [pid 4346] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4346] <... futex resumed>) = 0 [pid 4346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4346] <... futex resumed>) = 0 [pid 4346] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4346] <... mount resumed>) = 0 [pid 4346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4345] <... futex resumed>) = 0 [pid 4345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4346] <... futex resumed>) = 0 [pid 4346] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4345] <... futex resumed>) = 0 [pid 4345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4345] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4346] umount2("./file0", MNT_DETACH [pid 4345] <... mmap resumed>) = 0x7fc84e05e000 [pid 4345] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4346] <... umount2 resumed>) = 0 [pid 4345] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4345] <... clone resumed>, parent_tid=[4347], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4347 [pid 4345] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4345] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4347 attached [pid 4347] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4347] umount2("./file0", MNT_DETACH [pid 4346] <... futex resumed>) = 0 [pid 4347] <... umount2 resumed>) = 0 [pid 4346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4347] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4345] <... futex resumed>) = 0 [pid 4345] exit_group(0 [pid 4346] <... futex resumed>) = 231 [pid 4345] <... exit_group resumed>) = ? [pid 4347] <... futex resumed>) = ? [pid 4347] +++ exited with 0 +++ [pid 4346] +++ exited with 0 +++ [pid 4345] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4345, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4348 ./strace-static-x86_64: Process 4348 attached [pid 4348] set_robust_list(0x5555564465e0, 24) = 0 [pid 4348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4348] setpgid(0, 0) = 0 [pid 4348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4348] write(3, "1000", 4) = 4 [pid 4348] close(3) = 0 [pid 4348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4348] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4348] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4349], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4349 [pid 4348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4349 attached [pid 4349] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4349] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4348] <... futex resumed>) = 0 [pid 4348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4349] <... futex resumed>) = 1 [pid 4349] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4348] <... futex resumed>) = 0 [pid 4348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4349] <... futex resumed>) = 1 [pid 4349] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4348] <... futex resumed>) = 0 [pid 4349] <... futex resumed>) = 1 [pid 4348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4349] umount2("./file0", MNT_DETACH [pid 4348] <... futex resumed>) = 0 [pid 4348] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4348] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4349] <... umount2 resumed>) = 0 [pid 4349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4348] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4349] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4350 attached [pid 4349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4350] set_robust_list(0x7fc84e07e9e0, 24 [pid 4348] <... clone resumed>, parent_tid=[4350], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4350 [pid 4350] <... set_robust_list resumed>) = 0 [pid 4348] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4350] umount2("./file0", MNT_DETACH [pid 4348] <... futex resumed>) = 0 [pid 4348] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4350] <... umount2 resumed>) = 0 [pid 4350] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4348] <... futex resumed>) = 0 [pid 4350] <... futex resumed>) = 1 [pid 4348] exit_group(0 [pid 4350] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4349] <... futex resumed>) = ? [pid 4348] <... exit_group resumed>) = ? [pid 4350] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4349] +++ exited with 0 +++ [pid 4350] +++ exited with 0 +++ [pid 4348] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4351 ./strace-static-x86_64: Process 4351 attached [pid 4351] set_robust_list(0x5555564465e0, 24) = 0 [pid 4351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4351] setpgid(0, 0) = 0 [pid 4351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4351] write(3, "1000", 4) = 4 [pid 4351] close(3) = 0 [pid 4351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4351] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4351] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4352 attached [pid 4352] set_robust_list(0x7fc84e09f9e0, 24 [pid 4351] <... clone resumed>, parent_tid=[4352], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4352 [pid 4352] <... set_robust_list resumed>) = 0 [pid 4351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4352] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4351] <... futex resumed>) = 0 [pid 4352] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4352] <... mount resumed>) = 0 [pid 4352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4351] <... futex resumed>) = 0 [pid 4351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4352] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4351] <... futex resumed>) = 0 [pid 4351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4351] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4351] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4352] umount2("./file0", MNT_DETACH [pid 4351] <... clone resumed>, parent_tid=[4353], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4353 [pid 4351] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4351] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4353 attached [pid 4353] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4353] umount2("./file0", MNT_DETACH) = 0 [pid 4353] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4351] <... futex resumed>) = 0 [pid 4353] <... futex resumed>) = 1 [pid 4353] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4352] <... umount2 resumed>) = 0 [pid 4352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4351] exit_group(0) = ? [pid 4352] <... futex resumed>) = ? [pid 4353] <... futex resumed>) = ? [pid 4353] +++ exited with 0 +++ [pid 4352] +++ exited with 0 +++ [pid 4351] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4354 ./strace-static-x86_64: Process 4354 attached [pid 4354] set_robust_list(0x5555564465e0, 24) = 0 [pid 4354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4354] setpgid(0, 0) = 0 [pid 4354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4354] write(3, "1000", 4) = 4 [pid 4354] close(3) = 0 [pid 4354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4354] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4354] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4355 attached , parent_tid=[4355], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4355 [pid 4355] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4355] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4355] <... futex resumed>) = 0 [pid 4354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4355] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4355] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4355] <... futex resumed>) = 0 [pid 4355] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4355] <... mount resumed>) = 0 [pid 4355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4354] <... futex resumed>) = 0 [pid 4354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4355] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4354] <... futex resumed>) = 0 [pid 4354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4355] <... mount resumed>) = 0 [pid 4355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4354] <... futex resumed>) = 0 [pid 4354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4354] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4354] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4355] umount2("./file0", MNT_DETACH [pid 4354] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4356], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4356 [pid 4354] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4354] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4356 attached [pid 4356] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4356] umount2("./file0", MNT_DETACH [pid 4355] <... umount2 resumed>) = 0 [pid 4355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4356] <... umount2 resumed>) = 0 [pid 4355] <... futex resumed>) = 0 [pid 4356] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4354] <... futex resumed>) = 0 [pid 4354] exit_group(0) = ? [pid 4356] <... futex resumed>) = ? [pid 4355] +++ exited with 0 +++ [pid 4356] +++ exited with 0 +++ [pid 4354] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4354, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4357 ./strace-static-x86_64: Process 4357 attached [pid 4357] set_robust_list(0x5555564465e0, 24) = 0 [pid 4357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4357] setpgid(0, 0) = 0 [pid 4357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4357] write(3, "1000", 4) = 4 [pid 4357] close(3) = 0 [pid 4357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4357] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4357] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4358 attached , parent_tid=[4358], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4358 [pid 4358] set_robust_list(0x7fc84e09f9e0, 24 [pid 4357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4358] <... set_robust_list resumed>) = 0 [pid 4357] <... futex resumed>) = 0 [pid 4357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4358] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4357] <... futex resumed>) = 0 [pid 4358] <... futex resumed>) = 1 [pid 4357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4358] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4357] <... futex resumed>) = 0 [pid 4357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4358] <... mount resumed>) = 0 [pid 4358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4357] <... futex resumed>) = 0 [pid 4358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4357] <... futex resumed>) = 0 [pid 4358] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4358] <... mount resumed>) = 0 [pid 4358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4357] <... futex resumed>) = 0 [pid 4358] <... futex resumed>) = 1 [pid 4357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4358] umount2("./file0", MNT_DETACH [pid 4357] <... futex resumed>) = 0 [pid 4357] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4357] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4358] <... umount2 resumed>) = 0 [pid 4357] <... mprotect resumed>) = 0 [pid 4358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4357] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4358] <... futex resumed>) = 0 [pid 4358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4359 attached [pid 4357] <... clone resumed>, parent_tid=[4359], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4359 [pid 4359] set_robust_list(0x7fc84e07e9e0, 24 [pid 4357] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4359] <... set_robust_list resumed>) = 0 [pid 4357] <... futex resumed>) = 0 [pid 4359] umount2("./file0", MNT_DETACH [pid 4357] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4359] <... umount2 resumed>) = 0 [pid 4359] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4357] <... futex resumed>) = 0 [pid 4359] <... futex resumed>) = 1 [pid 4357] exit_group(0 [pid 4359] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4357] <... exit_group resumed>) = ? [pid 4358] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4358] +++ exited with 0 +++ [pid 4359] <... futex resumed>) = ? [pid 4359] +++ exited with 0 +++ [pid 4357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4357, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4360 ./strace-static-x86_64: Process 4360 attached [pid 4360] set_robust_list(0x5555564465e0, 24) = 0 [pid 4360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4360] setpgid(0, 0) = 0 [pid 4360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4360] write(3, "1000", 4) = 4 [pid 4360] close(3) = 0 [pid 4360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4360] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4360] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4361 attached , parent_tid=[4361], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4361 [pid 4361] set_robust_list(0x7fc84e09f9e0, 24 [pid 4360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4361] <... set_robust_list resumed>) = 0 [pid 4360] <... futex resumed>) = 0 [pid 4360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4361] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4360] <... futex resumed>) = 0 [pid 4361] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4361] <... mount resumed>) = 0 [pid 4361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4360] <... futex resumed>) = 0 [pid 4360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4361] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4360] <... futex resumed>) = 0 [pid 4360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4360] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4360] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4360] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4362 attached , parent_tid=[4362], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4362 [pid 4362] set_robust_list(0x7fc84e07e9e0, 24 [pid 4360] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4362] <... set_robust_list resumed>) = 0 [pid 4360] <... futex resumed>) = 0 [pid 4362] umount2("./file0", MNT_DETACH [pid 4360] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4361] umount2("./file0", MNT_DETACH [pid 4362] <... umount2 resumed>) = 0 [pid 4362] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4360] <... futex resumed>) = 0 [pid 4362] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4361] <... umount2 resumed>) = 0 [pid 4361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4360] exit_group(0) = ? [pid 4362] <... futex resumed>) = ? [pid 4362] +++ exited with 0 +++ [pid 4361] <... futex resumed>) = ? [pid 4361] +++ exited with 0 +++ [pid 4360] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4360, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4363 ./strace-static-x86_64: Process 4363 attached [pid 4363] set_robust_list(0x5555564465e0, 24) = 0 [pid 4363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4363] setpgid(0, 0) = 0 [pid 4363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4363] write(3, "1000", 4) = 4 [pid 4363] close(3) = 0 [pid 4363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4363] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4363] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4364 attached , parent_tid=[4364], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4364 [pid 4364] set_robust_list(0x7fc84e09f9e0, 24 [pid 4363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4364] <... set_robust_list resumed>) = 0 [pid 4363] <... futex resumed>) = 0 [pid 4363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4364] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4363] <... futex resumed>) = 0 [pid 4363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4364] <... futex resumed>) = 1 [pid 4364] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4363] <... futex resumed>) = 0 [pid 4363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4364] <... futex resumed>) = 1 [pid 4364] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4363] <... futex resumed>) = 0 [pid 4363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4363] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4363] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4363] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4365], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4365 [pid 4363] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4363] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4364] <... futex resumed>) = 1 [pid 4364] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4365 attached ) = 0 [pid 4364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4364] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4365] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4365] umount2("./file0", MNT_DETACH) = 0 [pid 4365] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4363] <... futex resumed>) = 0 [pid 4363] exit_group(0) = ? [pid 4364] <... futex resumed>) = ? [pid 4364] +++ exited with 0 +++ [pid 4365] +++ exited with 0 +++ [pid 4363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4363, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4366 ./strace-static-x86_64: Process 4366 attached [pid 4366] set_robust_list(0x5555564465e0, 24) = 0 [pid 4366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4366] setpgid(0, 0) = 0 [pid 4366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4366] write(3, "1000", 4) = 4 [pid 4366] close(3) = 0 [pid 4366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4366] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4366] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4367 attached , parent_tid=[4367], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4367 [pid 4367] set_robust_list(0x7fc84e09f9e0, 24 [pid 4366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4367] <... set_robust_list resumed>) = 0 [pid 4366] <... futex resumed>) = 0 [pid 4366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4367] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4366] <... futex resumed>) = 0 [pid 4367] <... futex resumed>) = 1 [pid 4367] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4367] <... mount resumed>) = 0 [pid 4367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4366] <... futex resumed>) = 0 [pid 4367] <... futex resumed>) = 1 [pid 4366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4367] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4366] <... futex resumed>) = 0 [pid 4366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4367] <... mount resumed>) = 0 [pid 4367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4366] <... futex resumed>) = 0 [pid 4366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4366] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4366] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4366] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4368 attached , parent_tid=[4368], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4368 [pid 4368] set_robust_list(0x7fc84e07e9e0, 24 [pid 4366] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4368] <... set_robust_list resumed>) = 0 [pid 4366] <... futex resumed>) = 0 [pid 4368] umount2("./file0", MNT_DETACH [pid 4366] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4367] umount2("./file0", MNT_DETACH [pid 4368] <... umount2 resumed>) = 0 [pid 4368] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4366] <... futex resumed>) = 0 [pid 4368] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4367] <... umount2 resumed>) = 0 [pid 4367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4366] exit_group(0) = ? [pid 4367] <... futex resumed>) = ? [pid 4368] <... futex resumed>) = ? [pid 4367] +++ exited with 0 +++ [pid 4368] +++ exited with 0 +++ [pid 4366] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4369 ./strace-static-x86_64: Process 4369 attached [pid 4369] set_robust_list(0x5555564465e0, 24) = 0 [pid 4369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4369] setpgid(0, 0) = 0 [pid 4369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4369] write(3, "1000", 4) = 4 [pid 4369] close(3) = 0 [pid 4369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4369] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4369] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4370 attached [pid 4370] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4369] <... clone resumed>, parent_tid=[4370], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4370 [pid 4369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4370] <... futex resumed>) = 0 [pid 4369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4370] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4369] <... futex resumed>) = 0 [pid 4369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4370] <... futex resumed>) = 0 [pid 4370] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4370] <... mount resumed>) = 0 [pid 4370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4369] <... futex resumed>) = 0 [pid 4370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4369] <... futex resumed>) = 0 [pid 4370] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4370] <... mount resumed>) = 0 [pid 4370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4369] <... futex resumed>) = 0 [pid 4370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4369] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4370] umount2("./file0", MNT_DETACH [pid 4369] <... mmap resumed>) = 0x7fc84e05e000 [pid 4369] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4369] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4370] <... umount2 resumed>) = 0 [pid 4370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4369] <... clone resumed>, parent_tid=[4371], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4371 [pid 4370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4369] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 4371 attached [pid 4369] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4371] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4371] umount2("./file0", MNT_DETACH) = 0 [pid 4371] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4369] <... futex resumed>) = 0 [pid 4371] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4369] exit_group(0) = ? [pid 4370] <... futex resumed>) = ? [pid 4370] +++ exited with 0 +++ [pid 4371] <... futex resumed>) = ? [pid 4371] +++ exited with 0 +++ [pid 4369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4372 ./strace-static-x86_64: Process 4372 attached [pid 4372] set_robust_list(0x5555564465e0, 24) = 0 [pid 4372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4372] setpgid(0, 0) = 0 [pid 4372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4372] write(3, "1000", 4) = 4 [pid 4372] close(3) = 0 [pid 4372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4372] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4372] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4373 attached , parent_tid=[4373], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4373 [pid 4373] set_robust_list(0x7fc84e09f9e0, 24 [pid 4372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4373] <... set_robust_list resumed>) = 0 [pid 4372] <... futex resumed>) = 0 [pid 4372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4373] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4372] <... futex resumed>) = 0 [pid 4372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4373] <... futex resumed>) = 1 [pid 4373] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4372] <... futex resumed>) = 0 [pid 4372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4373] <... futex resumed>) = 1 [pid 4373] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4372] <... futex resumed>) = 0 [pid 4372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4372] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4372] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4373] <... futex resumed>) = 1 [pid 4372] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4374 attached [pid 4373] umount2("./file0", MNT_DETACH [pid 4374] set_robust_list(0x7fc84e07e9e0, 24 [pid 4372] <... clone resumed>, parent_tid=[4374], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4374 [pid 4374] <... set_robust_list resumed>) = 0 [pid 4374] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4372] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4374] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4372] <... futex resumed>) = 0 [pid 4374] umount2("./file0", MNT_DETACH [pid 4372] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4373] <... umount2 resumed>) = 0 [pid 4373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4374] <... umount2 resumed>) = 0 [pid 4374] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4372] <... futex resumed>) = 0 [pid 4373] <... futex resumed>) = 0 [pid 4374] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4373] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4372] exit_group(0 [pid 4373] <... futex resumed>) = 231 [pid 4372] <... exit_group resumed>) = ? [pid 4374] <... futex resumed>) = ? [pid 4374] +++ exited with 0 +++ [pid 4373] +++ exited with 0 +++ [pid 4372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4372, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4375 ./strace-static-x86_64: Process 4375 attached [pid 4375] set_robust_list(0x5555564465e0, 24) = 0 [pid 4375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4375] setpgid(0, 0) = 0 [pid 4375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4375] write(3, "1000", 4) = 4 [pid 4375] close(3) = 0 [pid 4375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4375] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4375] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4376], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4376 ./strace-static-x86_64: Process 4376 attached [pid 4375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4376] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4375] <... futex resumed>) = 0 [pid 4376] mkdir("./file0", 000 [pid 4375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4376] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4376] <... futex resumed>) = 0 [pid 4376] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4376] <... mount resumed>) = 0 [pid 4376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4375] <... futex resumed>) = 0 [pid 4376] <... futex resumed>) = 1 [pid 4375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4376] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4375] <... futex resumed>) = 0 [pid 4375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4376] <... mount resumed>) = 0 [pid 4376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4375] <... futex resumed>) = 0 [pid 4375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4376] <... futex resumed>) = 0 [pid 4375] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4375] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4376] umount2("./file0", MNT_DETACH [pid 4375] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4377 attached [pid 4377] set_robust_list(0x7fc84e07e9e0, 24 [pid 4375] <... clone resumed>, parent_tid=[4377], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4377 [pid 4377] <... set_robust_list resumed>) = 0 [pid 4377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4376] <... umount2 resumed>) = 0 [pid 4375] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4377] umount2("./file0", MNT_DETACH [pid 4375] <... futex resumed>) = 0 [pid 4376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4377] <... umount2 resumed>) = 0 [pid 4377] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4376] <... futex resumed>) = 0 [pid 4375] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4375] exit_group(0) = ? [pid 4377] <... futex resumed>) = ? [pid 4376] <... futex resumed>) = ? [pid 4377] +++ exited with 0 +++ [pid 4376] +++ exited with 0 +++ [pid 4375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4378 attached , child_tidptr=0x5555564465d0) = 4378 [pid 4378] set_robust_list(0x5555564465e0, 24) = 0 [pid 4378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4378] setpgid(0, 0) = 0 [pid 4378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4378] write(3, "1000", 4) = 4 [pid 4378] close(3) = 0 [pid 4378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4378] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4378] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4379 attached , parent_tid=[4379], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4379 [pid 4379] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4379] <... futex resumed>) = 0 [pid 4379] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4379] <... futex resumed>) = 0 [pid 4379] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4379] <... futex resumed>) = 0 [pid 4378] <... futex resumed>) = 1 [pid 4379] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4379] <... mount resumed>) = 0 [pid 4379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4378] <... futex resumed>) = 0 [pid 4379] umount2("./file0", MNT_DETACH [pid 4378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4378] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4379] <... umount2 resumed>) = 0 [pid 4378] <... mmap resumed>) = 0x7fc84e05e000 [pid 4379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4378] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4379] <... futex resumed>) = 0 [pid 4378] <... mprotect resumed>) = 0 [pid 4379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4378] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4380 attached , parent_tid=[4380], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4380 [pid 4380] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4380] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4378] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4380] <... futex resumed>) = 0 [pid 4380] umount2("./file0", MNT_DETACH [pid 4378] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4380] <... umount2 resumed>) = 0 [pid 4380] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4380] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4378] exit_group(0 [pid 4379] <... futex resumed>) = ? [pid 4378] <... exit_group resumed>) = ? [pid 4380] <... futex resumed>) = ? [pid 4379] +++ exited with 0 +++ [pid 4380] +++ exited with 0 +++ [pid 4378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4381 ./strace-static-x86_64: Process 4381 attached [pid 4381] set_robust_list(0x5555564465e0, 24) = 0 [pid 4381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4381] setpgid(0, 0) = 0 [pid 4381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4381] write(3, "1000", 4) = 4 [pid 4381] close(3) = 0 [pid 4381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4381] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4381] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4382 attached , parent_tid=[4382], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4382 [pid 4382] set_robust_list(0x7fc84e09f9e0, 24 [pid 4381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4382] <... set_robust_list resumed>) = 0 [pid 4381] <... futex resumed>) = 0 [pid 4381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4382] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4381] <... futex resumed>) = 0 [pid 4382] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4382] <... mount resumed>) = 0 [pid 4382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4381] <... futex resumed>) = 0 [pid 4382] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4382] <... mount resumed>) = 0 [pid 4382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4381] <... futex resumed>) = 0 [pid 4381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4381] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4381] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4381] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4383 attached [pid 4382] umount2("./file0", MNT_DETACH [pid 4381] <... clone resumed>, parent_tid=[4383], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4383 [pid 4381] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4381] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4382] <... umount2 resumed>) = 0 [pid 4383] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4383] umount2("./file0", MNT_DETACH [pid 4382] <... futex resumed>) = 0 [pid 4382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4383] <... umount2 resumed>) = 0 [pid 4383] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4381] <... futex resumed>) = 0 [pid 4381] exit_group(0) = ? [pid 4382] <... futex resumed>) = ? [pid 4382] +++ exited with 0 +++ [pid 4383] +++ exited with 0 +++ [pid 4381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4381, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4384 ./strace-static-x86_64: Process 4384 attached [pid 4384] set_robust_list(0x5555564465e0, 24) = 0 [pid 4384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4384] setpgid(0, 0) = 0 [pid 4384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4384] write(3, "1000", 4) = 4 [pid 4384] close(3) = 0 [pid 4384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4384] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4384] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4385 attached , parent_tid=[4385], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4385 [pid 4385] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4385] <... futex resumed>) = 0 [pid 4385] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4385] <... futex resumed>) = 0 [pid 4385] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4385] <... futex resumed>) = 0 [pid 4385] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4385] <... futex resumed>) = 0 [pid 4385] umount2("./file0", MNT_DETACH [pid 4384] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4385] <... umount2 resumed>) = 0 [pid 4385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4384] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4384] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4386 attached [pid 4386] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] <... clone resumed>, parent_tid=[4386], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4386 [pid 4384] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4386] <... futex resumed>) = 0 [pid 4386] umount2("./file0", MNT_DETACH [pid 4384] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4386] <... umount2 resumed>) = 0 [pid 4386] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4384] exit_group(0 [pid 4385] <... futex resumed>) = ? [pid 4384] <... exit_group resumed>) = ? [pid 4385] +++ exited with 0 +++ [pid 4386] <... futex resumed>) = ? [pid 4386] +++ exited with 0 +++ [pid 4384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4387 ./strace-static-x86_64: Process 4387 attached [pid 4387] set_robust_list(0x5555564465e0, 24) = 0 [pid 4387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4387] setpgid(0, 0) = 0 [pid 4387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4387] write(3, "1000", 4) = 4 [pid 4387] close(3) = 0 [pid 4387] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4387] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4387] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4388 attached , parent_tid=[4388], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4388 [pid 4388] set_robust_list(0x7fc84e09f9e0, 24 [pid 4387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4388] <... set_robust_list resumed>) = 0 [pid 4387] <... futex resumed>) = 0 [pid 4387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4388] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4387] <... futex resumed>) = 0 [pid 4387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4388] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4387] <... futex resumed>) = 0 [pid 4387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4388] <... mount resumed>) = 0 [pid 4388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4387] <... futex resumed>) = 0 [pid 4388] <... futex resumed>) = 1 [pid 4387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4388] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4387] <... futex resumed>) = 0 [pid 4387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4388] <... mount resumed>) = 0 [pid 4388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4387] <... futex resumed>) = 0 [pid 4388] <... futex resumed>) = 1 [pid 4387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4388] umount2("./file0", MNT_DETACH [pid 4387] <... futex resumed>) = 0 [pid 4387] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4388] <... umount2 resumed>) = 0 [pid 4387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4387] <... mmap resumed>) = 0x7fc84e05e000 [pid 4388] <... futex resumed>) = 0 [pid 4387] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4387] <... mprotect resumed>) = 0 [pid 4387] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4389 attached , parent_tid=[4389], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4389 [pid 4389] set_robust_list(0x7fc84e07e9e0, 24 [pid 4387] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4389] <... set_robust_list resumed>) = 0 [pid 4387] <... futex resumed>) = 0 [pid 4389] umount2("./file0", MNT_DETACH [pid 4387] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4389] <... umount2 resumed>) = 0 [pid 4389] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4387] <... futex resumed>) = 0 [pid 4389] <... futex resumed>) = 1 [pid 4389] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4387] exit_group(0) = ? [pid 4388] <... futex resumed>) = 231 [pid 4389] <... futex resumed>) = ? [pid 4388] +++ exited with 0 +++ [pid 4389] +++ exited with 0 +++ [pid 4387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4390 ./strace-static-x86_64: Process 4390 attached [pid 4390] set_robust_list(0x5555564465e0, 24) = 0 [pid 4390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4390] setpgid(0, 0) = 0 [pid 4390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4390] write(3, "1000", 4) = 4 [pid 4390] close(3) = 0 [pid 4390] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4390] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4390] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4391 attached , parent_tid=[4391], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4391 [pid 4390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4391] set_robust_list(0x7fc84e09f9e0, 24 [pid 4390] <... futex resumed>) = 0 [pid 4390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4391] <... set_robust_list resumed>) = 0 [pid 4391] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4390] <... futex resumed>) = 0 [pid 4390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4391] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4390] <... futex resumed>) = 0 [pid 4390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4391] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4390] <... futex resumed>) = 0 [pid 4390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4390] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4390] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4390] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4391] umount2("./file0", MNT_DETACH [pid 4390] <... clone resumed>, parent_tid=[4392], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4392 [pid 4390] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4390] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4392 attached [pid 4392] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4392] umount2("./file0", MNT_DETACH) = 0 [pid 4392] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4390] <... futex resumed>) = 0 [pid 4392] <... futex resumed>) = 1 [pid 4392] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4391] <... umount2 resumed>) = 0 [pid 4391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4390] exit_group(0) = ? [pid 4391] <... futex resumed>) = ? [pid 4391] +++ exited with 0 +++ [pid 4392] <... futex resumed>) = ? [pid 4392] +++ exited with 0 +++ [pid 4390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4393 ./strace-static-x86_64: Process 4393 attached [pid 4393] set_robust_list(0x5555564465e0, 24) = 0 [pid 4393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4393] setpgid(0, 0) = 0 [pid 4393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4393] write(3, "1000", 4) = 4 [pid 4393] close(3) = 0 [pid 4393] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4393] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4393] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4394 attached , parent_tid=[4394], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4394 [pid 4394] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4394] <... futex resumed>) = 0 [pid 4394] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4394] <... futex resumed>) = 0 [pid 4394] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4394] <... mount resumed>) = 0 [pid 4394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] <... futex resumed>) = 0 [pid 4393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4394] <... futex resumed>) = 0 [pid 4394] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4394] <... mount resumed>) = 0 [pid 4394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] <... futex resumed>) = 0 [pid 4393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4394] <... futex resumed>) = 0 [pid 4394] umount2("./file0", MNT_DETACH [pid 4393] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4394] <... umount2 resumed>) = 0 [pid 4393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] <... mmap resumed>) = 0x7fc84e05e000 [pid 4393] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4393] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4395 attached , parent_tid=[4395], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4395 [pid 4395] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4395] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4395] <... futex resumed>) = 0 [pid 4395] umount2("./file0", MNT_DETACH [pid 4393] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4395] <... umount2 resumed>) = 0 [pid 4395] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4395] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4393] <... futex resumed>) = 0 [pid 4393] exit_group(0 [pid 4394] <... futex resumed>) = ? [pid 4393] <... exit_group resumed>) = ? [pid 4394] +++ exited with 0 +++ [pid 4395] <... futex resumed>) = ? [pid 4395] +++ exited with 0 +++ [pid 4393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4396 attached , child_tidptr=0x5555564465d0) = 4396 [pid 4396] set_robust_list(0x5555564465e0, 24) = 0 [pid 4396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4396] setpgid(0, 0) = 0 [pid 4396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4396] write(3, "1000", 4) = 4 [pid 4396] close(3) = 0 [pid 4396] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4396] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4396] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4397 attached , parent_tid=[4397], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4397 [pid 4397] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4397] <... futex resumed>) = 0 [pid 4397] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4397] <... futex resumed>) = 0 [pid 4397] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4397] <... mount resumed>) = 0 [pid 4397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4397] <... futex resumed>) = 0 [pid 4397] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4397] <... mount resumed>) = 0 [pid 4397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] <... futex resumed>) = 0 [pid 4396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4397] <... futex resumed>) = 0 [pid 4396] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4397] umount2("./file0", MNT_DETACH [pid 4396] <... futex resumed>) = 0 [pid 4397] <... umount2 resumed>) = 0 [pid 4396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] <... mmap resumed>) = 0x7fc84e05e000 [pid 4396] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4396] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4398 attached [pid 4398] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4398] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] <... clone resumed>, parent_tid=[4398], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4398 [pid 4396] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4398] <... futex resumed>) = 0 [pid 4396] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4398] umount2("./file0", MNT_DETACH) = 0 [pid 4398] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4396] <... futex resumed>) = 0 [pid 4398] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4396] exit_group(0 [pid 4397] <... futex resumed>) = ? [pid 4396] <... exit_group resumed>) = ? [pid 4397] +++ exited with 0 +++ [pid 4398] <... futex resumed>) = ? [pid 4398] +++ exited with 0 +++ [pid 4396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4399 ./strace-static-x86_64: Process 4399 attached [pid 4399] set_robust_list(0x5555564465e0, 24) = 0 [pid 4399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4399] setpgid(0, 0) = 0 [pid 4399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4399] write(3, "1000", 4) = 4 [pid 4399] close(3) = 0 [pid 4399] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4399] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4399] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4400 attached [pid 4400] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4399] <... clone resumed>, parent_tid=[4400], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4400 [pid 4399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] <... futex resumed>) = 0 [pid 4400] mkdir("./file0", 000 [pid 4399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4400] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4399] <... futex resumed>) = 0 [pid 4399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] <... futex resumed>) = 0 [pid 4400] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4400] <... mount resumed>) = 0 [pid 4400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4399] <... futex resumed>) = 0 [pid 4399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] <... futex resumed>) = 0 [pid 4400] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4400] <... mount resumed>) = 0 [pid 4400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4399] <... futex resumed>) = 0 [pid 4399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4400] <... futex resumed>) = 0 [pid 4399] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4400] umount2("./file0", MNT_DETACH [pid 4399] <... futex resumed>) = 0 [pid 4399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4399] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4399] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4401], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4401 [pid 4399] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4399] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4400] <... umount2 resumed>) = 0 [pid 4400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4401 attached [pid 4401] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4401] umount2("./file0", MNT_DETACH) = 0 [pid 4401] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4399] <... futex resumed>) = 0 [pid 4401] <... futex resumed>) = 1 [pid 4399] exit_group(0 [pid 4401] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4399] <... exit_group resumed>) = ? [pid 4400] <... futex resumed>) = ? [pid 4400] +++ exited with 0 +++ [pid 4401] <... futex resumed>) = ? [pid 4401] +++ exited with 0 +++ [pid 4399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4402 ./strace-static-x86_64: Process 4402 attached [pid 4402] set_robust_list(0x5555564465e0, 24) = 0 [pid 4402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4402] setpgid(0, 0) = 0 [pid 4402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4402] write(3, "1000", 4) = 4 [pid 4402] close(3) = 0 [pid 4402] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4402] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4402] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4403 attached , parent_tid=[4403], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4403 [pid 4403] set_robust_list(0x7fc84e09f9e0, 24 [pid 4402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4403] <... set_robust_list resumed>) = 0 [pid 4402] <... futex resumed>) = 0 [pid 4402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4403] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4402] <... futex resumed>) = 0 [pid 4403] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4403] <... mount resumed>) = 0 [pid 4403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4402] <... futex resumed>) = 0 [pid 4403] <... futex resumed>) = 1 [pid 4403] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4403] <... mount resumed>) = 0 [pid 4403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4402] <... futex resumed>) = 0 [pid 4403] umount2("./file0", MNT_DETACH [pid 4402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4402] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4403] <... umount2 resumed>) = 0 [pid 4403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4402] <... mmap resumed>) = 0x7fc84e05e000 [pid 4403] <... futex resumed>) = 0 [pid 4402] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4402] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4404 attached , parent_tid=[4404], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4404 [pid 4404] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4402] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4404] <... futex resumed>) = 0 [pid 4402] <... futex resumed>) = 1 [pid 4404] umount2("./file0", MNT_DETACH [pid 4402] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4404] <... umount2 resumed>) = 0 [pid 4404] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4402] <... futex resumed>) = 0 [pid 4404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4402] exit_group(0) = ? [pid 4404] <... futex resumed>) = ? [pid 4404] +++ exited with 0 +++ [pid 4403] <... futex resumed>) = ? [pid 4403] +++ exited with 0 +++ [pid 4402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4402, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4405 ./strace-static-x86_64: Process 4405 attached [pid 4405] set_robust_list(0x5555564465e0, 24) = 0 [pid 4405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4405] setpgid(0, 0) = 0 [pid 4405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4405] write(3, "1000", 4) = 4 [pid 4405] close(3) = 0 [pid 4405] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4405] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4405] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4406 attached , parent_tid=[4406], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4406 [pid 4406] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4406] <... futex resumed>) = 0 [pid 4406] mkdir("./file0", 000 [pid 4405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4406] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4405] <... futex resumed>) = 0 [pid 4405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4406] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4405] <... futex resumed>) = 0 [pid 4405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4406] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4406] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4405] <... futex resumed>) = 0 [pid 4405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4405] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4405] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4405] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4407], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4407 [pid 4406] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4405] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4405] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4407 attached [pid 4407] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4407] umount2("./file0", MNT_DETACH [pid 4406] umount2("./file0", MNT_DETACH) = 0 [pid 4406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4407] <... umount2 resumed>) = 0 [pid 4407] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4405] <... futex resumed>) = 0 [pid 4405] exit_group(0) = ? [pid 4407] <... futex resumed>) = ? [pid 4406] <... futex resumed>) = ? [pid 4407] +++ exited with 0 +++ [pid 4406] +++ exited with 0 +++ [pid 4405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4405, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4408 ./strace-static-x86_64: Process 4408 attached [pid 4408] set_robust_list(0x5555564465e0, 24) = 0 [pid 4408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4408] setpgid(0, 0) = 0 [pid 4408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4408] write(3, "1000", 4) = 4 [pid 4408] close(3) = 0 [pid 4408] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4408] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4408] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4409 attached [pid 4409] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4408] <... clone resumed>, parent_tid=[4409], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4409 [pid 4408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4409] <... futex resumed>) = 0 [pid 4408] <... futex resumed>) = 1 [pid 4408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4409] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4408] <... futex resumed>) = 0 [pid 4408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4409] <... futex resumed>) = 0 [pid 4409] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4409] <... mount resumed>) = 0 [pid 4409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4408] <... futex resumed>) = 0 [pid 4408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4409] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4408] <... futex resumed>) = 0 [pid 4408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4408] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4408] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4408] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4410], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4410 [pid 4408] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4408] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4409] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4410 attached [pid 4410] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4410] umount2("./file0", MNT_DETACH) = 0 [pid 4410] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4408] <... futex resumed>) = 0 [pid 4409] <... umount2 resumed>) = 0 [pid 4410] <... futex resumed>) = 1 [pid 4410] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4408] exit_group(0 [pid 4410] <... futex resumed>) = 231 [pid 4408] <... exit_group resumed>) = ? [pid 4409] <... futex resumed>) = ? [pid 4409] +++ exited with 0 +++ [pid 4410] +++ exited with 0 +++ [pid 4408] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4411 ./strace-static-x86_64: Process 4411 attached [pid 4411] set_robust_list(0x5555564465e0, 24) = 0 [pid 4411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4411] setpgid(0, 0) = 0 [pid 4411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4411] write(3, "1000", 4) = 4 [pid 4411] close(3) = 0 [pid 4411] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4411] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4411] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4412 attached , parent_tid=[4412], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4412 [pid 4412] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4412] <... futex resumed>) = 0 [pid 4412] mkdir("./file0", 000 [pid 4411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4412] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4411] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4412] <... futex resumed>) = 0 [pid 4411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4412] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4411] <... futex resumed>) = 0 [pid 4411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4412] <... futex resumed>) = 0 [pid 4412] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4411] <... futex resumed>) = 0 [pid 4412] umount2("./file0", MNT_DETACH [pid 4411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4411] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4411] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4411] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4413 attached , parent_tid=[4413], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4413 [pid 4413] set_robust_list(0x7fc84e07e9e0, 24 [pid 4411] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4413] <... set_robust_list resumed>) = 0 [pid 4411] <... futex resumed>) = 0 [pid 4413] umount2("./file0", MNT_DETACH [pid 4411] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4412] <... umount2 resumed>) = 0 [pid 4413] <... umount2 resumed>) = 0 [pid 4413] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4411] <... futex resumed>) = 0 [pid 4413] <... futex resumed>) = 1 [pid 4412] <... futex resumed>) = 0 [pid 4413] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4411] exit_group(0) = ? [pid 4413] <... futex resumed>) = 231 [pid 4412] <... futex resumed>) = ? [pid 4413] +++ exited with 0 +++ [pid 4412] +++ exited with 0 +++ [pid 4411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4414 ./strace-static-x86_64: Process 4414 attached [pid 4414] set_robust_list(0x5555564465e0, 24) = 0 [pid 4414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4414] setpgid(0, 0) = 0 [pid 4414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4414] write(3, "1000", 4) = 4 [pid 4414] close(3) = 0 [pid 4414] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4414] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4414] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4415 attached [pid 4415] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4414] <... clone resumed>, parent_tid=[4415], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4415 [pid 4415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4415] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4414] <... futex resumed>) = 1 [pid 4415] <... futex resumed>) = 0 [pid 4415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4415] <... futex resumed>) = 0 [pid 4415] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4415] <... mount resumed>) = 0 [pid 4415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4414] <... futex resumed>) = 0 [pid 4414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4415] <... futex resumed>) = 0 [pid 4414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4415] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4414] <... futex resumed>) = 0 [pid 4414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4414] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4415] umount2("./file0", MNT_DETACH [pid 4414] <... mmap resumed>) = 0x7fc84e05e000 [pid 4414] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4415] <... umount2 resumed>) = 0 [pid 4414] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4414] <... clone resumed>, parent_tid=[4416], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4416 [pid 4414] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4414] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4416 attached [pid 4416] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4416] umount2("./file0", MNT_DETACH [pid 4415] <... futex resumed>) = 0 [pid 4415] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4416] <... umount2 resumed>) = 0 [pid 4416] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4414] <... futex resumed>) = 0 [pid 4416] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4414] exit_group(0 [pid 4416] <... futex resumed>) = 231 [pid 4414] <... exit_group resumed>) = ? [pid 4415] <... futex resumed>) = ? [pid 4415] +++ exited with 0 +++ [pid 4416] +++ exited with 0 +++ [pid 4414] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4417 attached , child_tidptr=0x5555564465d0) = 4417 [pid 4417] set_robust_list(0x5555564465e0, 24) = 0 [pid 4417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4417] setpgid(0, 0) = 0 [pid 4417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4417] write(3, "1000", 4) = 4 [pid 4417] close(3) = 0 [pid 4417] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4417] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4417] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4418 attached , parent_tid=[4418], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4418 [pid 4418] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4418] <... futex resumed>) = 0 [pid 4418] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4418] <... futex resumed>) = 0 [pid 4418] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4418] <... futex resumed>) = 0 [pid 4418] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4417] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4418] <... mount resumed>) = 0 [pid 4418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4417] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4418] <... futex resumed>) = 0 [pid 4418] umount2("./file0", MNT_DETACH [pid 4417] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4418] <... umount2 resumed>) = 0 [pid 4418] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4418] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] <... futex resumed>) = 0 [pid 4417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4417] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4417] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4419 attached , parent_tid=[4419], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4419 [pid 4419] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4419] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4419] <... futex resumed>) = 0 [pid 4419] umount2("./file0", MNT_DETACH) = 0 [pid 4417] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4419] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4419] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4417] exit_group(0 [pid 4418] <... futex resumed>) = ? [pid 4417] <... exit_group resumed>) = ? [pid 4418] +++ exited with 0 +++ [pid 4419] <... futex resumed>) = ? [pid 4419] +++ exited with 0 +++ [pid 4417] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4420 ./strace-static-x86_64: Process 4420 attached [pid 4420] set_robust_list(0x5555564465e0, 24) = 0 [pid 4420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4420] setpgid(0, 0) = 0 [pid 4420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4420] write(3, "1000", 4) = 4 [pid 4420] close(3) = 0 [pid 4420] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4420] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4420] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4421], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4421 ./strace-static-x86_64: Process 4421 attached [pid 4420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4421] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4421] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 4420] <... futex resumed>) = 1 [pid 4420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4421] <... futex resumed>) = 0 [pid 4420] <... futex resumed>) = 1 [pid 4421] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4420] <... futex resumed>) = 0 [pid 4421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4421] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4420] <... futex resumed>) = 0 [pid 4420] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4421] <... mount resumed>) = 0 [pid 4421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4420] <... futex resumed>) = 0 [pid 4420] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4420] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4421] umount2("./file0", MNT_DETACH [pid 4420] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4420] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4421] <... umount2 resumed>) = 0 [pid 4420] <... clone resumed>, parent_tid=[4422], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4422 [pid 4421] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4420] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4422 attached [pid 4422] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4422] umount2("./file0", MNT_DETACH [pid 4421] <... futex resumed>) = 0 [pid 4420] <... futex resumed>) = 0 [pid 4421] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4420] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4422] <... umount2 resumed>) = 0 [pid 4422] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4422] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4420] <... futex resumed>) = 0 [pid 4420] exit_group(0) = ? [pid 4421] <... futex resumed>) = ? [pid 4421] +++ exited with 0 +++ [pid 4422] <... futex resumed>) = ? [pid 4422] +++ exited with 0 +++ [pid 4420] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4420, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4423 ./strace-static-x86_64: Process 4423 attached [pid 4423] set_robust_list(0x5555564465e0, 24) = 0 [pid 4423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4423] setpgid(0, 0) = 0 [pid 4423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4423] write(3, "1000", 4) = 4 [pid 4423] close(3) = 0 [pid 4423] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4423] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4423] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4424 attached [pid 4424] set_robust_list(0x7fc84e09f9e0, 24 [pid 4423] <... clone resumed>, parent_tid=[4424], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4424 [pid 4424] <... set_robust_list resumed>) = 0 [pid 4424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4424] <... futex resumed>) = 0 [pid 4424] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4424] <... futex resumed>) = 0 [pid 4424] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4423] <... futex resumed>) = 0 [pid 4424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4423] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4424] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4423] <... futex resumed>) = 0 [pid 4424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4423] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4423] <... futex resumed>) = 0 [pid 4424] umount2("./file0", MNT_DETACH [pid 4423] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4423] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4424] <... umount2 resumed>) = 0 [pid 4423] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4424] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4425 attached ) = 0 [pid 4423] <... clone resumed>, parent_tid=[4425], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4425 [pid 4425] set_robust_list(0x7fc84e07e9e0, 24 [pid 4424] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4425] <... set_robust_list resumed>) = 0 [pid 4423] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4425] umount2("./file0", MNT_DETACH [pid 4423] <... futex resumed>) = 0 [pid 4423] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4425] <... umount2 resumed>) = 0 [pid 4425] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4423] <... futex resumed>) = 0 [pid 4423] exit_group(0) = ? [pid 4424] <... futex resumed>) = ? [pid 4424] +++ exited with 0 +++ [pid 4425] <... futex resumed>) = ? [pid 4425] +++ exited with 0 +++ [pid 4423] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4423, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4426 attached , child_tidptr=0x5555564465d0) = 4426 [pid 4426] set_robust_list(0x5555564465e0, 24) = 0 [pid 4426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4426] setpgid(0, 0) = 0 [pid 4426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4426] write(3, "1000", 4) = 4 [pid 4426] close(3) = 0 [pid 4426] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4426] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4426] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4427 attached , parent_tid=[4427], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4427 [pid 4427] set_robust_list(0x7fc84e09f9e0, 24 [pid 4426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4427] <... set_robust_list resumed>) = 0 [pid 4426] <... futex resumed>) = 0 [pid 4426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4427] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4426] <... futex resumed>) = 0 [pid 4427] <... futex resumed>) = 1 [pid 4426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4427] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4426] <... futex resumed>) = 0 [pid 4426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4427] <... mount resumed>) = 0 [pid 4427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4426] <... futex resumed>) = 0 [pid 4427] <... futex resumed>) = 1 [pid 4426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4427] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4426] <... futex resumed>) = 0 [pid 4426] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4427] <... mount resumed>) = 0 [pid 4427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4426] <... futex resumed>) = 0 [pid 4427] <... futex resumed>) = 1 [pid 4426] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4427] umount2("./file0", MNT_DETACH [pid 4426] <... futex resumed>) = 0 [pid 4426] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4426] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4427] <... umount2 resumed>) = 0 [pid 4426] <... mprotect resumed>) = 0 [pid 4427] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4426] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4427] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4428 attached [pid 4427] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4428] set_robust_list(0x7fc84e07e9e0, 24 [pid 4426] <... clone resumed>, parent_tid=[4428], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4428 [pid 4428] <... set_robust_list resumed>) = 0 [pid 4426] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4428] umount2("./file0", MNT_DETACH [pid 4426] <... futex resumed>) = 0 [pid 4426] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4428] <... umount2 resumed>) = 0 [pid 4428] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4426] <... futex resumed>) = 0 [pid 4428] <... futex resumed>) = 1 [pid 4426] exit_group(0 [pid 4428] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4426] <... exit_group resumed>) = ? [pid 4427] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4428] <... futex resumed>) = ? [pid 4427] +++ exited with 0 +++ [pid 4428] +++ exited with 0 +++ [pid 4426] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4426, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4429 ./strace-static-x86_64: Process 4429 attached [pid 4429] set_robust_list(0x5555564465e0, 24) = 0 [pid 4429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4429] setpgid(0, 0) = 0 [pid 4429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4429] write(3, "1000", 4) = 4 [pid 4429] close(3) = 0 [pid 4429] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4429] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4429] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4430 attached , parent_tid=[4430], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4430 [pid 4430] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4430] <... futex resumed>) = 0 [pid 4430] mkdir("./file0", 000 [pid 4429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4430] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4429] <... futex resumed>) = 0 [pid 4429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4430] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4429] <... futex resumed>) = 0 [pid 4430] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4429] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4430] <... mount resumed>) = 0 [pid 4430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4429] <... futex resumed>) = 0 [pid 4429] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4429] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4429] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4429] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4430] umount2("./file0", MNT_DETACH [pid 4429] <... clone resumed>, parent_tid=[4431], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4431 [pid 4429] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4429] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4431 attached [pid 4431] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4431] umount2("./file0", MNT_DETACH) = 0 [pid 4431] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4429] <... futex resumed>) = 0 [pid 4430] <... umount2 resumed>) = 0 [pid 4431] <... futex resumed>) = 1 [pid 4431] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4430] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4430] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4429] exit_group(0) = ? [pid 4431] <... futex resumed>) = ? [pid 4431] +++ exited with 0 +++ [pid 4430] <... futex resumed>) = ? [pid 4430] +++ exited with 0 +++ [pid 4429] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4432 ./strace-static-x86_64: Process 4432 attached [pid 4432] set_robust_list(0x5555564465e0, 24) = 0 [pid 4432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4432] setpgid(0, 0) = 0 [pid 4432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4432] write(3, "1000", 4) = 4 [pid 4432] close(3) = 0 [pid 4432] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4432] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4432] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4433 attached [pid 4433] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4432] <... clone resumed>, parent_tid=[4433], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4433 [pid 4432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4433] <... futex resumed>) = 0 [pid 4432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4433] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4433] <... futex resumed>) = 0 [pid 4433] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4433] <... mount resumed>) = 0 [pid 4433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4432] <... futex resumed>) = 0 [pid 4432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4433] <... futex resumed>) = 0 [pid 4433] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4432] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4433] <... mount resumed>) = 0 [pid 4433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4432] <... futex resumed>) = 0 [pid 4432] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4433] <... futex resumed>) = 0 [pid 4433] umount2("./file0", MNT_DETACH [pid 4432] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4433] <... umount2 resumed>) = 0 [pid 4432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4433] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4432] <... mmap resumed>) = 0x7fc84e05e000 [pid 4433] <... futex resumed>) = 0 [pid 4432] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4433] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4432] <... mprotect resumed>) = 0 [pid 4432] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4434 attached [pid 4434] set_robust_list(0x7fc84e07e9e0, 24 [pid 4432] <... clone resumed>, parent_tid=[4434], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4434 [pid 4434] <... set_robust_list resumed>) = 0 [pid 4432] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4434] umount2("./file0", MNT_DETACH [pid 4432] <... futex resumed>) = 0 [pid 4432] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4434] <... umount2 resumed>) = 0 [pid 4434] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4432] <... futex resumed>) = 0 [pid 4434] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4432] exit_group(0) = ? [pid 4433] <... futex resumed>) = ? [pid 4433] +++ exited with 0 +++ [pid 4434] <... futex resumed>) = ? [pid 4434] +++ exited with 0 +++ [pid 4432] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4435 ./strace-static-x86_64: Process 4435 attached [pid 4435] set_robust_list(0x5555564465e0, 24) = 0 [pid 4435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4435] setpgid(0, 0) = 0 [pid 4435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4435] write(3, "1000", 4) = 4 [pid 4435] close(3) = 0 [pid 4435] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4435] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4435] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4436 attached , parent_tid=[4436], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4436 [pid 4436] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4436] <... futex resumed>) = 0 [pid 4436] mkdir("./file0", 000 [pid 4435] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4436] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4436] <... futex resumed>) = 0 [pid 4436] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4435] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4436] <... mount resumed>) = 0 [pid 4436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4436] <... futex resumed>) = 0 [pid 4436] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4435] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4436] <... mount resumed>) = 0 [pid 4436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] <... futex resumed>) = 0 [pid 4435] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4436] <... futex resumed>) = 0 [pid 4436] umount2("./file0", MNT_DETACH [pid 4435] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4436] <... umount2 resumed>) = 0 [pid 4436] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4436] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4435] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4435] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4437 attached , parent_tid=[4437], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4437 [pid 4437] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4437] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4437] <... futex resumed>) = 0 [pid 4435] <... futex resumed>) = 1 [pid 4437] umount2("./file0", MNT_DETACH [pid 4435] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4437] <... umount2 resumed>) = 0 [pid 4437] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4435] <... futex resumed>) = 0 [pid 4437] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4435] exit_group(0 [pid 4437] <... futex resumed>) = ? [pid 4436] <... futex resumed>) = ? [pid 4435] <... exit_group resumed>) = ? [pid 4436] +++ exited with 0 +++ [pid 4437] +++ exited with 0 +++ [pid 4435] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4435, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4438 ./strace-static-x86_64: Process 4438 attached [pid 4438] set_robust_list(0x5555564465e0, 24) = 0 [pid 4438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4438] setpgid(0, 0) = 0 [pid 4438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4438] write(3, "1000", 4) = 4 [pid 4438] close(3) = 0 [pid 4438] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4438] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4438] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4439], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4439 [pid 4438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4438] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4439 attached [pid 4439] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4439] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4438] <... futex resumed>) = 0 [pid 4438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4438] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4439] <... futex resumed>) = 1 [pid 4439] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4438] <... futex resumed>) = 0 [pid 4439] <... futex resumed>) = 1 [pid 4438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4439] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4438] <... futex resumed>) = 0 [pid 4438] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4439] <... mount resumed>) = 0 [pid 4439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4438] <... futex resumed>) = 0 [pid 4438] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4439] umount2("./file0", MNT_DETACH [pid 4438] <... futex resumed>) = 0 [pid 4438] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4438] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4439] <... umount2 resumed>) = 0 [pid 4439] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4438] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4439] <... futex resumed>) = 0 [pid 4439] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4440 attached [pid 4438] <... clone resumed>, parent_tid=[4440], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4440 [pid 4438] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4440] set_robust_list(0x7fc84e07e9e0, 24 [pid 4438] <... futex resumed>) = 0 [pid 4440] <... set_robust_list resumed>) = 0 [pid 4438] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4440] umount2("./file0", MNT_DETACH) = 0 [pid 4440] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4438] <... futex resumed>) = 0 [pid 4440] <... futex resumed>) = 1 [pid 4440] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4438] exit_group(0) = ? [pid 4439] <... futex resumed>) = 231 [pid 4440] <... futex resumed>) = ? [pid 4439] +++ exited with 0 +++ [pid 4440] +++ exited with 0 +++ [pid 4438] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4438, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4441 ./strace-static-x86_64: Process 4441 attached [pid 4441] set_robust_list(0x5555564465e0, 24) = 0 [pid 4441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4441] setpgid(0, 0) = 0 [pid 4441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4441] write(3, "1000", 4) = 4 [pid 4441] close(3) = 0 [pid 4441] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4441] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4441] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4442 attached [pid 4442] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4441] <... clone resumed>, parent_tid=[4442], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4442 [pid 4441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4442] <... futex resumed>) = 0 [pid 4442] mkdir("./file0", 000 [pid 4441] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4442] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4441] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4442] <... futex resumed>) = 0 [pid 4441] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4442] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4441] <... futex resumed>) = 0 [pid 4441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4442] <... futex resumed>) = 0 [pid 4442] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4441] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4442] <... mount resumed>) = 0 [pid 4442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4441] <... futex resumed>) = 0 [pid 4441] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4441] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4441] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4442] umount2("./file0", MNT_DETACH [pid 4441] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4442] <... umount2 resumed>) = 0 [pid 4441] <... clone resumed>, parent_tid=[4443], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4443 [pid 4442] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4441] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4441] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4443 attached [pid 4442] <... futex resumed>) = 0 [pid 4443] set_robust_list(0x7fc84e07e9e0, 24 [pid 4442] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4443] <... set_robust_list resumed>) = 0 [pid 4443] umount2("./file0", MNT_DETACH) = 0 [pid 4443] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4441] <... futex resumed>) = 0 [pid 4441] exit_group(0) = ? [pid 4442] <... futex resumed>) = ? [pid 4442] +++ exited with 0 +++ [pid 4443] +++ exited with 0 +++ [pid 4441] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4441, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4444 ./strace-static-x86_64: Process 4444 attached [pid 4444] set_robust_list(0x5555564465e0, 24) = 0 [pid 4444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4444] setpgid(0, 0) = 0 [pid 4444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4444] write(3, "1000", 4) = 4 [pid 4444] close(3) = 0 [pid 4444] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4444] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4444] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4445 attached [pid 4445] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4445] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4444] <... clone resumed>, parent_tid=[4445], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4445 [pid 4444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4445] <... futex resumed>) = 0 [pid 4445] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4445] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4444] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4445] <... futex resumed>) = 0 [pid 4445] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4444] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4444] <... futex resumed>) = 0 [pid 4445] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4445] <... mount resumed>) = 0 [pid 4445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4444] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4445] <... futex resumed>) = 0 [pid 4444] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4445] umount2("./file0", MNT_DETACH [pid 4444] <... futex resumed>) = 0 [pid 4444] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4445] <... umount2 resumed>) = 0 [pid 4444] <... futex resumed>) = 0 [pid 4445] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4445] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4444] <... mmap resumed>) = 0x7fc84e05e000 [pid 4444] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4444] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4446 attached , parent_tid=[4446], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4446 [pid 4446] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4446] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4444] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4446] <... futex resumed>) = 0 [pid 4446] umount2("./file0", MNT_DETACH [pid 4444] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4446] <... umount2 resumed>) = 0 [pid 4446] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4444] <... futex resumed>) = 0 [pid 4444] exit_group(0) = ? [pid 4445] <... futex resumed>) = ? [pid 4445] +++ exited with 0 +++ [pid 4446] +++ exited with 0 +++ [pid 4444] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4444, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4447 ./strace-static-x86_64: Process 4447 attached [pid 4447] set_robust_list(0x5555564465e0, 24) = 0 [pid 4447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4447] setpgid(0, 0) = 0 [pid 4447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4447] write(3, "1000", 4) = 4 [pid 4447] close(3) = 0 [pid 4447] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4447] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4447] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4448 attached , parent_tid=[4448], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4448 [pid 4448] set_robust_list(0x7fc84e09f9e0, 24 [pid 4447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4448] <... set_robust_list resumed>) = 0 [pid 4447] <... futex resumed>) = 0 [pid 4447] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4448] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4447] <... futex resumed>) = 0 [pid 4448] <... futex resumed>) = 1 [pid 4447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4448] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4447] <... futex resumed>) = 0 [pid 4447] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4448] <... mount resumed>) = 0 [pid 4448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4447] <... futex resumed>) = 0 [pid 4448] <... futex resumed>) = 1 [pid 4447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4448] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4447] <... futex resumed>) = 0 [pid 4447] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4448] <... mount resumed>) = 0 [pid 4448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4447] <... futex resumed>) = 0 [pid 4448] <... futex resumed>) = 1 [pid 4447] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4448] umount2("./file0", MNT_DETACH [pid 4447] <... futex resumed>) = 0 [pid 4447] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4447] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4447] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4448] <... umount2 resumed>) = 0 [pid 4448] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4449 attached ) = 0 [pid 4447] <... clone resumed>, parent_tid=[4449], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4449 [pid 4449] set_robust_list(0x7fc84e07e9e0, 24 [pid 4448] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4449] <... set_robust_list resumed>) = 0 [pid 4447] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4449] umount2("./file0", MNT_DETACH [pid 4447] <... futex resumed>) = 0 [pid 4447] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4449] <... umount2 resumed>) = 0 [pid 4449] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4447] <... futex resumed>) = 0 [pid 4449] <... futex resumed>) = 1 [pid 4447] exit_group(0 [pid 4449] ????( [pid 4447] <... exit_group resumed>) = ? [pid 4448] <... futex resumed>) = ? [pid 4448] +++ exited with 0 +++ [pid 4449] <... ???? resumed>) = ? [pid 4449] +++ exited with 0 +++ [pid 4447] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4447, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4450 ./strace-static-x86_64: Process 4450 attached [pid 4450] set_robust_list(0x5555564465e0, 24) = 0 [pid 4450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4450] setpgid(0, 0) = 0 [pid 4450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4450] write(3, "1000", 4) = 4 [pid 4450] close(3) = 0 [pid 4450] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4450] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4450] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4452 attached , parent_tid=[4452], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4452 [pid 4452] set_robust_list(0x7fc84e09f9e0, 24 [pid 4450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4450] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4452] <... set_robust_list resumed>) = 0 [pid 4452] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4450] <... futex resumed>) = 0 [pid 4450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4450] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4452] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4450] <... futex resumed>) = 0 [pid 4450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4452] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4450] <... futex resumed>) = 0 [pid 4450] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4452] <... mount resumed>) = 0 [pid 4452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4450] <... futex resumed>) = 0 [pid 4452] umount2("./file0", MNT_DETACH [pid 4450] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4450] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4450] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4452] <... umount2 resumed>) = 0 [pid 4452] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4450] <... mprotect resumed>) = 0 [pid 4452] <... futex resumed>) = 0 [pid 4450] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4452] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4453 attached [pid 4450] <... clone resumed>, parent_tid=[4453], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4453 [pid 4453] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4453] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4450] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4453] <... futex resumed>) = 0 [pid 4453] umount2("./file0", MNT_DETACH [pid 4450] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4453] <... umount2 resumed>) = 0 [pid 4453] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4453] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4450] exit_group(0) = ? [pid 4453] <... futex resumed>) = ? [pid 4452] <... futex resumed>) = ? [pid 4453] +++ exited with 0 +++ [pid 4452] +++ exited with 0 +++ [pid 4450] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4450, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4454 ./strace-static-x86_64: Process 4454 attached [pid 4454] set_robust_list(0x5555564465e0, 24) = 0 [pid 4454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4454] setpgid(0, 0) = 0 [pid 4454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4454] write(3, "1000", 4) = 4 [pid 4454] close(3) = 0 [pid 4454] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4454] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4454] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4455 attached , parent_tid=[4455], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4455 [pid 4455] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4455] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4455] <... futex resumed>) = 0 [pid 4455] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4455] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4454] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4455] <... futex resumed>) = 0 [pid 4455] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4454] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4455] <... mount resumed>) = 0 [pid 4455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4455] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4454] <... futex resumed>) = 0 [pid 4454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4455] <... futex resumed>) = 0 [pid 4454] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4455] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4454] <... futex resumed>) = 0 [pid 4455] umount2("./file0", MNT_DETACH [pid 4454] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4454] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4455] <... umount2 resumed>) = 0 [pid 4454] <... futex resumed>) = 0 [pid 4455] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4455] <... futex resumed>) = 0 [pid 4454] <... mmap resumed>) = 0x7fc84e05e000 [pid 4454] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4455] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4454] <... mprotect resumed>) = 0 [pid 4454] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4456 attached , parent_tid=[4456], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4456 [pid 4456] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4456] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4454] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4456] <... futex resumed>) = 0 [pid 4456] umount2("./file0", MNT_DETACH [pid 4454] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4456] <... umount2 resumed>) = 0 [pid 4456] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4454] <... futex resumed>) = 0 [pid 4454] exit_group(0) = ? [pid 4455] <... futex resumed>) = ? [pid 4456] +++ exited with 0 +++ [pid 4455] +++ exited with 0 +++ [pid 4454] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4454, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4457 ./strace-static-x86_64: Process 4457 attached [pid 4457] set_robust_list(0x5555564465e0, 24) = 0 [pid 4457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4457] setpgid(0, 0) = 0 [pid 4457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4457] write(3, "1000", 4) = 4 [pid 4457] close(3) = 0 [pid 4457] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4457] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4457] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4457] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4458], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4458 [pid 4457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4457] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4458 attached [pid 4458] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4458] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4457] <... futex resumed>) = 0 [pid 4457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4457] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4458] <... futex resumed>) = 1 [pid 4458] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4457] <... futex resumed>) = 0 [pid 4457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4457] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4458] <... futex resumed>) = 1 [pid 4458] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4457] <... futex resumed>) = 0 [pid 4457] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4457] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4457] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4457] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4457] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4458] <... futex resumed>) = 1 [pid 4457] <... clone resumed>, parent_tid=[4459], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4459 [pid 4457] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4458] umount2("./file0", MNT_DETACH [pid 4457] <... futex resumed>) = 0 [pid 4457] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4459 attached [pid 4459] set_robust_list(0x7fc84e07e9e0, 24 [pid 4458] <... umount2 resumed>) = 0 [pid 4459] <... set_robust_list resumed>) = 0 [pid 4458] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4459] umount2("./file0", MNT_DETACH [pid 4458] <... futex resumed>) = 0 [pid 4458] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4459] <... umount2 resumed>) = 0 [pid 4459] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4457] <... futex resumed>) = 0 [pid 4459] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4457] exit_group(0) = ? [pid 4458] <... futex resumed>) = ? [pid 4459] <... futex resumed>) = ? [pid 4458] +++ exited with 0 +++ [pid 4459] +++ exited with 0 +++ [pid 4457] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4457, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4460 attached , child_tidptr=0x5555564465d0) = 4460 [pid 4460] set_robust_list(0x5555564465e0, 24) = 0 [pid 4460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4460] setpgid(0, 0) = 0 [pid 4460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4460] write(3, "1000", 4) = 4 [pid 4460] close(3) = 0 [pid 4460] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4460] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4460] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4461 attached , parent_tid=[4461], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4461 [pid 4461] set_robust_list(0x7fc84e09f9e0, 24 [pid 4460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4461] <... set_robust_list resumed>) = 0 [pid 4460] <... futex resumed>) = 0 [pid 4460] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4461] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4460] <... futex resumed>) = 0 [pid 4461] <... futex resumed>) = 1 [pid 4460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4460] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4461] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4460] <... futex resumed>) = 0 [pid 4461] <... futex resumed>) = 1 [pid 4460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4461] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4460] <... futex resumed>) = 0 [pid 4460] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4461] <... mount resumed>) = 0 [pid 4461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4460] <... futex resumed>) = 0 [pid 4460] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4460] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4460] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4460] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4462], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4462 [pid 4460] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4460] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4462 attached [pid 4462] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4462] umount2("./file0", MNT_DETACH [pid 4461] umount2("./file0", MNT_DETACH [pid 4462] <... umount2 resumed>) = 0 [pid 4462] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4460] <... futex resumed>) = 0 [pid 4461] <... umount2 resumed>) = 0 [pid 4462] <... futex resumed>) = 1 [pid 4462] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4461] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4461] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4460] exit_group(0) = ? [pid 4461] <... futex resumed>) = ? [pid 4462] <... futex resumed>) = ? [pid 4462] +++ exited with 0 +++ [pid 4461] +++ exited with 0 +++ [pid 4460] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4460, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4463 ./strace-static-x86_64: Process 4463 attached [pid 4463] set_robust_list(0x5555564465e0, 24) = 0 [pid 4463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4463] setpgid(0, 0) = 0 [pid 4463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4463] write(3, "1000", 4) = 4 [pid 4463] close(3) = 0 [pid 4463] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4463] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4463] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4464 attached , parent_tid=[4464], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4464 [pid 4464] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4464] <... futex resumed>) = 0 [pid 4464] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4463] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4464] <... futex resumed>) = 0 [pid 4464] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4463] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4464] <... futex resumed>) = 0 [pid 4464] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4463] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4464] <... mount resumed>) = 0 [pid 4464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4463] <... futex resumed>) = 0 [pid 4464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4463] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4463] <... futex resumed>) = 0 [pid 4464] umount2("./file0", MNT_DETACH [pid 4463] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4464] <... umount2 resumed>) = 0 [pid 4463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4464] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4463] <... mmap resumed>) = 0x7fc84e05e000 [pid 4464] <... futex resumed>) = 0 [pid 4463] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4464] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4463] <... mprotect resumed>) = 0 [pid 4463] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4465 attached , parent_tid=[4465], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4465 [pid 4465] set_robust_list(0x7fc84e07e9e0, 24 [pid 4463] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4465] <... set_robust_list resumed>) = 0 [pid 4463] <... futex resumed>) = 0 [pid 4465] umount2("./file0", MNT_DETACH [pid 4463] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4465] <... umount2 resumed>) = 0 [pid 4465] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4463] <... futex resumed>) = 0 [pid 4463] exit_group(0 [pid 4465] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 4464] <... futex resumed>) = ? [pid 4463] <... exit_group resumed>) = ? [pid 4464] +++ exited with 0 +++ [pid 4465] +++ exited with 0 +++ [pid 4463] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4463, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4466 ./strace-static-x86_64: Process 4466 attached [pid 4466] set_robust_list(0x5555564465e0, 24) = 0 [pid 4466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4466] setpgid(0, 0) = 0 [pid 4466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4466] write(3, "1000", 4) = 4 [pid 4466] close(3) = 0 [pid 4466] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4466] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4466] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4467 attached [pid 4467] set_robust_list(0x7fc84e09f9e0, 24 [pid 4466] <... clone resumed>, parent_tid=[4467], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4467 [pid 4467] <... set_robust_list resumed>) = 0 [pid 4467] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4467] <... futex resumed>) = 0 [pid 4466] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4467] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4467] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4466] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4467] <... futex resumed>) = 0 [pid 4467] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4466] <... futex resumed>) = 0 [pid 4466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4466] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4467] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4466] <... futex resumed>) = 0 [pid 4467] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4466] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4466] <... futex resumed>) = 0 [pid 4467] umount2("./file0", MNT_DETACH [pid 4466] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4467] <... umount2 resumed>) = 0 [pid 4466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4467] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4466] <... mmap resumed>) = 0x7fc84e05e000 [pid 4467] <... futex resumed>) = 0 [pid 4466] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4467] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4466] <... mprotect resumed>) = 0 [pid 4466] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4468 attached , parent_tid=[4468], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4468 [pid 4468] set_robust_list(0x7fc84e07e9e0, 24 [pid 4466] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4468] <... set_robust_list resumed>) = 0 [pid 4466] <... futex resumed>) = 0 [pid 4468] umount2("./file0", MNT_DETACH [pid 4466] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4468] <... umount2 resumed>) = 0 [pid 4468] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4466] <... futex resumed>) = 0 [pid 4468] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4466] exit_group(0) = ? [pid 4467] <... futex resumed>) = 231 [pid 4468] <... futex resumed>) = ? [pid 4467] +++ exited with 0 +++ [pid 4468] +++ exited with 0 +++ [pid 4466] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4466, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4469 attached , child_tidptr=0x5555564465d0) = 4469 [pid 4469] set_robust_list(0x5555564465e0, 24) = 0 [pid 4469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4469] setpgid(0, 0) = 0 [pid 4469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4469] write(3, "1000", 4) = 4 [pid 4469] close(3) = 0 [pid 4469] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4469] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4469] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4469] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4470 attached , parent_tid=[4470], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4470 [pid 4470] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4470] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4470] <... futex resumed>) = 0 [pid 4470] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4469] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4470] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4469] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4470] <... futex resumed>) = 0 [pid 4470] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4469] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4470] <... mount resumed>) = 0 [pid 4470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4469] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4470] <... futex resumed>) = 0 [pid 4469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4470] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4469] <... futex resumed>) = 0 [pid 4469] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4470] <... mount resumed>) = 0 [pid 4470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4469] <... futex resumed>) = 0 [pid 4470] umount2("./file0", MNT_DETACH [pid 4469] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4469] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4469] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4470] <... umount2 resumed>) = 0 [pid 4469] <... mmap resumed>) = 0x7fc84e05e000 [pid 4470] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4469] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4470] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4469] <... mprotect resumed>) = 0 [pid 4469] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4471 attached , parent_tid=[4471], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4471 [pid 4471] set_robust_list(0x7fc84e07e9e0, 24 [pid 4469] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4471] <... set_robust_list resumed>) = 0 [pid 4471] umount2("./file0", MNT_DETACH) = 0 [pid 4469] <... futex resumed>) = 0 [pid 4471] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4471] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4469] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4469] exit_group(0) = ? [pid 4471] <... futex resumed>) = ? [pid 4470] <... futex resumed>) = ? [pid 4471] +++ exited with 0 +++ [pid 4470] +++ exited with 0 +++ [pid 4469] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4469, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4472 attached , child_tidptr=0x5555564465d0) = 4472 [pid 4472] set_robust_list(0x5555564465e0, 24) = 0 [pid 4472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4472] setpgid(0, 0) = 0 [pid 4472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4472] write(3, "1000", 4) = 4 [pid 4472] close(3) = 0 [pid 4472] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4472] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4472] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4473], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4473 [pid 4472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4472] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4473 attached [pid 4473] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4473] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4472] <... futex resumed>) = 0 [pid 4472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4472] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4473] <... futex resumed>) = 1 [pid 4473] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4472] <... futex resumed>) = 0 [pid 4472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4472] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4473] <... futex resumed>) = 1 [pid 4473] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4472] <... futex resumed>) = 0 [pid 4473] <... futex resumed>) = 1 [pid 4472] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4473] umount2("./file0", MNT_DETACH [pid 4472] <... futex resumed>) = 0 [pid 4472] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4473] <... umount2 resumed>) = 0 [pid 4472] <... mmap resumed>) = 0x7fc84e05e000 [pid 4472] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4473] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4472] <... mprotect resumed>) = 0 [pid 4473] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4472] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4474 attached , parent_tid=[4474], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4474 [pid 4474] set_robust_list(0x7fc84e07e9e0, 24 [pid 4472] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4474] <... set_robust_list resumed>) = 0 [pid 4472] <... futex resumed>) = 0 [pid 4474] umount2("./file0", MNT_DETACH [pid 4472] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4474] <... umount2 resumed>) = 0 [pid 4474] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4472] <... futex resumed>) = 0 [pid 4472] exit_group(0) = ? [pid 4473] <... futex resumed>) = ? [pid 4473] +++ exited with 0 +++ [pid 4474] +++ exited with 0 +++ [pid 4472] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4472, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4475 ./strace-static-x86_64: Process 4475 attached [pid 4475] set_robust_list(0x5555564465e0, 24) = 0 [pid 4475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4475] setpgid(0, 0) = 0 [pid 4475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4475] write(3, "1000", 4) = 4 [pid 4475] close(3) = 0 [pid 4475] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4475] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4475] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4476 attached [pid 4476] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] <... clone resumed>, parent_tid=[4476], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4476 [pid 4475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4476] <... futex resumed>) = 0 [pid 4476] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4476] <... futex resumed>) = 0 [pid 4476] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4476] <... mount resumed>) = 0 [pid 4476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4476] <... futex resumed>) = 0 [pid 4476] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4475] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4476] <... mount resumed>) = 0 [pid 4476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4475] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4476] <... futex resumed>) = 0 [pid 4476] umount2("./file0", MNT_DETACH [pid 4475] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4476] <... umount2 resumed>) = 0 [pid 4475] <... futex resumed>) = 0 [pid 4476] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4476] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4475] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4475] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4477 attached [pid 4477] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4477] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] <... clone resumed>, parent_tid=[4477], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4477 [pid 4475] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4477] <... futex resumed>) = 0 [pid 4477] umount2("./file0", MNT_DETACH [pid 4475] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4477] <... umount2 resumed>) = 0 [pid 4477] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4477] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4475] <... futex resumed>) = 0 [pid 4475] exit_group(0) = ? [pid 4476] <... futex resumed>) = ? [pid 4476] +++ exited with 0 +++ [pid 4477] <... futex resumed>) = ? [pid 4477] +++ exited with 0 +++ [pid 4475] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4475, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4478 ./strace-static-x86_64: Process 4478 attached [pid 4478] set_robust_list(0x5555564465e0, 24) = 0 [pid 4478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4478] setpgid(0, 0) = 0 [pid 4478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4478] write(3, "1000", 4) = 4 [pid 4478] close(3) = 0 [pid 4478] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4478] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4478] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4479 attached , parent_tid=[4479], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4479 [pid 4478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4479] set_robust_list(0x7fc84e09f9e0, 24 [pid 4478] <... futex resumed>) = 0 [pid 4479] <... set_robust_list resumed>) = 0 [pid 4478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4479] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4479] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4478] <... futex resumed>) = 0 [pid 4478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4479] <... futex resumed>) = 0 [pid 4479] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4479] <... mount resumed>) = 0 [pid 4479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4478] <... futex resumed>) = 0 [pid 4478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4478] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4479] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4478] <... futex resumed>) = 0 [pid 4478] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4478] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4478] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4478] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4480], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4480 [pid 4478] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4478] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4480 attached [pid 4480] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4480] umount2("./file0", MNT_DETACH [pid 4479] umount2("./file0", MNT_DETACH) = 0 [pid 4479] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4480] <... umount2 resumed>) = 0 [pid 4480] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4478] <... futex resumed>) = 0 [pid 4479] <... futex resumed>) = 0 [pid 4478] exit_group(0) = ? [pid 4480] <... futex resumed>) = ? [pid 4480] +++ exited with 0 +++ [pid 4479] +++ exited with 0 +++ [pid 4478] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4478, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4481 ./strace-static-x86_64: Process 4481 attached [pid 4481] set_robust_list(0x5555564465e0, 24) = 0 [pid 4481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4481] setpgid(0, 0) = 0 [pid 4481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4481] write(3, "1000", 4) = 4 [pid 4481] close(3) = 0 [pid 4481] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4481] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4481] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4482 attached , parent_tid=[4482], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4482 [pid 4482] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4482] <... futex resumed>) = 0 [pid 4481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4482] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4481] <... futex resumed>) = 0 [pid 4481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4482] <... futex resumed>) = 0 [pid 4482] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4482] <... mount resumed>) = 0 [pid 4482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4481] <... futex resumed>) = 0 [pid 4482] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4481] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4482] <... mount resumed>) = 0 [pid 4482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4481] <... futex resumed>) = 0 [pid 4482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4481] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4481] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4481] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4482] umount2("./file0", MNT_DETACH [pid 4481] <... mmap resumed>) = 0x7fc84e05e000 [pid 4481] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4481] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4483], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4483 [pid 4481] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4482] <... umount2 resumed>) = 0 [pid 4481] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4482] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4482] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4483 attached [pid 4483] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4483] umount2("./file0", MNT_DETACH) = 0 [pid 4483] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4481] <... futex resumed>) = 0 [pid 4481] exit_group(0) = ? [pid 4482] <... futex resumed>) = ? [pid 4482] +++ exited with 0 +++ [pid 4483] +++ exited with 0 +++ [pid 4481] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4481, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4484 ./strace-static-x86_64: Process 4484 attached [pid 4484] set_robust_list(0x5555564465e0, 24) = 0 [pid 4484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4484] setpgid(0, 0) = 0 [pid 4484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4484] write(3, "1000", 4) = 4 [pid 4484] close(3) = 0 [pid 4484] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4484] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4484] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4485 attached , parent_tid=[4485], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4485 [pid 4485] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4485] <... futex resumed>) = 0 [pid 4485] mkdir("./file0", 000 [pid 4484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4485] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4485] <... futex resumed>) = 0 [pid 4485] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4485] <... mount resumed>) = 0 [pid 4485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4485] <... futex resumed>) = 0 [pid 4484] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4485] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4484] <... futex resumed>) = 0 [pid 4484] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4485] <... futex resumed>) = 0 [pid 4484] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4485] umount2("./file0", MNT_DETACH [pid 4484] <... futex resumed>) = 0 [pid 4484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4485] <... umount2 resumed>) = 0 [pid 4484] <... mmap resumed>) = 0x7fc84e05e000 [pid 4485] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4484] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4485] <... futex resumed>) = 0 [pid 4485] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4484] <... mprotect resumed>) = 0 [pid 4484] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4486 attached [pid 4486] set_robust_list(0x7fc84e07e9e0, 24 [pid 4484] <... clone resumed>, parent_tid=[4486], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4486 [pid 4486] <... set_robust_list resumed>) = 0 [pid 4484] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4486] umount2("./file0", MNT_DETACH [pid 4484] <... futex resumed>) = 0 [pid 4484] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4486] <... umount2 resumed>) = 0 [pid 4486] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4484] <... futex resumed>) = 0 [pid 4486] <... futex resumed>) = 1 [pid 4486] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4484] exit_group(0) = ? [pid 4486] <... futex resumed>) = ? [pid 4485] <... futex resumed>) = ? [pid 4485] +++ exited with 0 +++ [pid 4486] +++ exited with 0 +++ [pid 4484] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4487 attached , child_tidptr=0x5555564465d0) = 4487 [pid 4487] set_robust_list(0x5555564465e0, 24) = 0 [pid 4487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4487] setpgid(0, 0) = 0 [pid 4487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4487] write(3, "1000", 4) = 4 [pid 4487] close(3) = 0 [pid 4487] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4487] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4487] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4488 attached , parent_tid=[4488], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4488 [pid 4488] set_robust_list(0x7fc84e09f9e0, 24 [pid 4487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4488] <... set_robust_list resumed>) = 0 [pid 4487] <... futex resumed>) = 0 [pid 4487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4488] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4487] <... futex resumed>) = 0 [pid 4488] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4488] <... mount resumed>) = 0 [pid 4488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4487] <... futex resumed>) = 0 [pid 4488] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4487] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4488] <... mount resumed>) = 0 [pid 4488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4487] <... futex resumed>) = 0 [pid 4487] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4487] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4487] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4487] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4489], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4489 [pid 4487] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4487] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4489 attached [pid 4489] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4489] umount2("./file0", MNT_DETACH [pid 4488] umount2("./file0", MNT_DETACH [pid 4489] <... umount2 resumed>) = 0 [pid 4488] <... umount2 resumed>) = 0 [pid 4489] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4487] <... futex resumed>) = 0 [pid 4489] <... futex resumed>) = 1 [pid 4488] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4489] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4488] <... futex resumed>) = 0 [pid 4488] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4487] exit_group(0) = ? [pid 4489] <... futex resumed>) = ? [pid 4489] +++ exited with 0 +++ [pid 4488] <... futex resumed>) = ? [pid 4488] +++ exited with 0 +++ [pid 4487] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4487, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4490 ./strace-static-x86_64: Process 4490 attached [pid 4490] set_robust_list(0x5555564465e0, 24) = 0 [pid 4490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4490] setpgid(0, 0) = 0 [pid 4490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4490] write(3, "1000", 4) = 4 [pid 4490] close(3) = 0 [pid 4490] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4490] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4490] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4491 attached [pid 4491] set_robust_list(0x7fc84e09f9e0, 24 [pid 4490] <... clone resumed>, parent_tid=[4491], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4491 [pid 4491] <... set_robust_list resumed>) = 0 [pid 4491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4491] <... futex resumed>) = 0 [pid 4491] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4491] <... futex resumed>) = 0 [pid 4491] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4491] <... futex resumed>) = 0 [pid 4490] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4491] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4490] <... futex resumed>) = 0 [pid 4490] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4490] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4491] umount2("./file0", MNT_DETACH [pid 4490] <... mmap resumed>) = 0x7fc84e05e000 [pid 4490] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4490] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4492], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4492 [pid 4490] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4491] <... umount2 resumed>) = 0 [pid 4490] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4492 attached [pid 4491] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4490] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4492] set_robust_list(0x7fc84e07e9e0, 24 [pid 4491] <... futex resumed>) = 0 [pid 4492] <... set_robust_list resumed>) = 0 [pid 4491] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4492] umount2("./file0", MNT_DETACH) = 0 [pid 4492] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4490] <... futex resumed>) = 0 [pid 4490] exit_group(0 [pid 4492] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4490] <... exit_group resumed>) = ? [pid 4492] <... futex resumed>) = ? [pid 4491] <... futex resumed>) = ? [pid 4491] +++ exited with 0 +++ [pid 4492] +++ exited with 0 +++ [pid 4490] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4490, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4493 ./strace-static-x86_64: Process 4493 attached [pid 4493] set_robust_list(0x5555564465e0, 24) = 0 [pid 4493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4493] setpgid(0, 0) = 0 [pid 4493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4493] write(3, "1000", 4) = 4 [pid 4493] close(3) = 0 [pid 4493] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4493] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4493] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4494 attached , parent_tid=[4494], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4494 [pid 4494] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4494] <... futex resumed>) = 0 [pid 4494] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4494] <... futex resumed>) = 0 [pid 4494] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4494] <... mount resumed>) = 0 [pid 4494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4494] <... futex resumed>) = 0 [pid 4494] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4493] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4494] <... mount resumed>) = 0 [pid 4494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4493] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4494] <... futex resumed>) = 0 [pid 4494] umount2("./file0", MNT_DETACH [pid 4493] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4494] <... umount2 resumed>) = 0 [pid 4494] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4494] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] <... futex resumed>) = 0 [pid 4493] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4493] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4493] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4495 attached , parent_tid=[4495], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4495 [pid 4495] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4495] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4495] <... futex resumed>) = 0 [pid 4495] umount2("./file0", MNT_DETACH [pid 4493] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4495] <... umount2 resumed>) = 0 [pid 4495] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4495] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4493] exit_group(0 [pid 4494] <... futex resumed>) = ? [pid 4493] <... exit_group resumed>) = ? [pid 4494] +++ exited with 0 +++ [pid 4495] <... futex resumed>) = ? [pid 4495] +++ exited with 0 +++ [pid 4493] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4493, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4496 ./strace-static-x86_64: Process 4496 attached [pid 4496] set_robust_list(0x5555564465e0, 24) = 0 [pid 4496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4496] setpgid(0, 0) = 0 [pid 4496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4496] write(3, "1000", 4) = 4 [pid 4496] close(3) = 0 [pid 4496] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4496] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4496] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4497 attached , parent_tid=[4497], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4497 [pid 4497] set_robust_list(0x7fc84e09f9e0, 24 [pid 4496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4497] <... set_robust_list resumed>) = 0 [pid 4497] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4496] <... futex resumed>) = 0 [pid 4496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4497] <... futex resumed>) = 1 [pid 4497] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4496] <... futex resumed>) = 0 [pid 4496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4496] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4497] <... futex resumed>) = 1 [pid 4497] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4496] <... futex resumed>) = 0 [pid 4497] <... futex resumed>) = 1 [pid 4496] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4497] umount2("./file0", MNT_DETACH [pid 4496] <... futex resumed>) = 0 [pid 4496] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4497] <... umount2 resumed>) = 0 [pid 4496] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4497] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4496] <... mprotect resumed>) = 0 [pid 4497] <... futex resumed>) = 0 [pid 4496] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4497] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4498 attached [pid 4496] <... clone resumed>, parent_tid=[4498], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4498 [pid 4498] set_robust_list(0x7fc84e07e9e0, 24 [pid 4496] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4498] <... set_robust_list resumed>) = 0 [pid 4496] <... futex resumed>) = 0 [pid 4498] umount2("./file0", MNT_DETACH [pid 4496] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4498] <... umount2 resumed>) = 0 [pid 4498] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4496] <... futex resumed>) = 0 [pid 4498] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4496] exit_group(0) = ? [pid 4497] <... futex resumed>) = 231 [pid 4498] <... futex resumed>) = ? [pid 4497] +++ exited with 0 +++ [pid 4498] +++ exited with 0 +++ [pid 4496] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4496, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4499 ./strace-static-x86_64: Process 4499 attached [pid 4499] set_robust_list(0x5555564465e0, 24) = 0 [pid 4499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4499] setpgid(0, 0) = 0 [pid 4499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4499] write(3, "1000", 4) = 4 [pid 4499] close(3) = 0 [pid 4499] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4499] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4499] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4500], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4500 [pid 4499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4500 attached [pid 4500] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4500] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4499] <... futex resumed>) = 0 [pid 4499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4500] <... futex resumed>) = 1 [pid 4500] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4499] <... futex resumed>) = 0 [pid 4499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4499] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4500] <... futex resumed>) = 1 [pid 4500] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4499] <... futex resumed>) = 0 [pid 4500] <... futex resumed>) = 1 [pid 4499] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4500] umount2("./file0", MNT_DETACH [pid 4499] <... futex resumed>) = 0 [pid 4499] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4499] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4500] <... umount2 resumed>) = 0 [pid 4499] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4500] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4501 attached ) = 0 [pid 4499] <... clone resumed>, parent_tid=[4501], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4501 [pid 4501] set_robust_list(0x7fc84e07e9e0, 24 [pid 4500] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4499] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4501] <... set_robust_list resumed>) = 0 [pid 4499] <... futex resumed>) = 0 [pid 4501] umount2("./file0", MNT_DETACH [pid 4499] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4501] <... umount2 resumed>) = 0 [pid 4501] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4499] <... futex resumed>) = 0 [pid 4501] <... futex resumed>) = 1 [pid 4499] exit_group(0 [pid 4501] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4499] <... exit_group resumed>) = ? [pid 4500] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4501] <... futex resumed>) = ? [pid 4500] +++ exited with 0 +++ [pid 4501] +++ exited with 0 +++ [pid 4499] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4499, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4502 ./strace-static-x86_64: Process 4502 attached [pid 4502] set_robust_list(0x5555564465e0, 24) = 0 [pid 4502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4502] setpgid(0, 0) = 0 [pid 4502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4502] write(3, "1000", 4) = 4 [pid 4502] close(3) = 0 [pid 4502] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4502] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4502] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4503 attached [pid 4503] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4502] <... clone resumed>, parent_tid=[4503], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4503 [pid 4503] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4503] <... futex resumed>) = 0 [pid 4502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4503] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4503] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4503] <... futex resumed>) = 0 [pid 4503] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4503] <... mount resumed>) = 0 [pid 4503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4503] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4502] <... futex resumed>) = 0 [pid 4502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4503] <... futex resumed>) = 0 [pid 4502] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4503] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4502] <... futex resumed>) = 0 [pid 4503] umount2("./file0", MNT_DETACH [pid 4502] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4502] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4502] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4503] <... umount2 resumed>) = 0 [pid 4502] <... mprotect resumed>) = 0 [pid 4503] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4502] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4503] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4504 attached [pid 4504] set_robust_list(0x7fc84e07e9e0, 24 [pid 4502] <... clone resumed>, parent_tid=[4504], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4504 [pid 4502] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4504] <... set_robust_list resumed>) = 0 [pid 4504] umount2("./file0", MNT_DETACH [pid 4502] <... futex resumed>) = 0 [pid 4502] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4504] <... umount2 resumed>) = 0 [pid 4504] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4504] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4502] <... futex resumed>) = 0 [pid 4502] exit_group(0) = ? [pid 4503] <... futex resumed>) = ? [pid 4503] +++ exited with 0 +++ [pid 4504] <... futex resumed>) = ? [pid 4504] +++ exited with 0 +++ [pid 4502] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4505 ./strace-static-x86_64: Process 4505 attached [pid 4505] set_robust_list(0x5555564465e0, 24) = 0 [pid 4505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4505] setpgid(0, 0) = 0 [pid 4505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4505] write(3, "1000", 4) = 4 [pid 4505] close(3) = 0 [pid 4505] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4505] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4505] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4506 attached , parent_tid=[4506], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4506 [pid 4506] set_robust_list(0x7fc84e09f9e0, 24 [pid 4505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4506] <... set_robust_list resumed>) = 0 [pid 4505] <... futex resumed>) = 0 [pid 4505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4506] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4505] <... futex resumed>) = 0 [pid 4505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4506] <... futex resumed>) = 1 [pid 4506] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4505] <... futex resumed>) = 0 [pid 4505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4505] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4506] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4506] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4505] <... futex resumed>) = 0 [pid 4505] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4505] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4505] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4505] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4506] <... futex resumed>) = 0 [pid 4506] umount2("./file0", MNT_DETACH [pid 4505] <... clone resumed>, parent_tid=[4507], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4507 [pid 4506] <... umount2 resumed>) = 0 [pid 4505] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4505] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4506] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4507 attached ) = 0 [pid 4507] set_robust_list(0x7fc84e07e9e0, 24 [pid 4506] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4507] <... set_robust_list resumed>) = 0 [pid 4507] umount2("./file0", MNT_DETACH) = 0 [pid 4507] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4505] <... futex resumed>) = 0 [pid 4505] exit_group(0) = ? [pid 4507] <... futex resumed>) = ? [pid 4507] +++ exited with 0 +++ [pid 4506] <... futex resumed>) = ? [pid 4506] +++ exited with 0 +++ [pid 4505] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4508 ./strace-static-x86_64: Process 4508 attached [pid 4508] set_robust_list(0x5555564465e0, 24) = 0 [pid 4508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4508] setpgid(0, 0) = 0 [pid 4508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4508] write(3, "1000", 4) = 4 [pid 4508] close(3) = 0 [pid 4508] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4508] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4508] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4509 attached , parent_tid=[4509], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4509 [pid 4509] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4509] <... futex resumed>) = 0 [pid 4509] mkdir("./file0", 000 [pid 4508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4509] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4508] <... futex resumed>) = 0 [pid 4508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4509] <... futex resumed>) = 0 [pid 4509] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4509] <... mount resumed>) = 0 [pid 4509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4508] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4509] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4508] <... futex resumed>) = 0 [pid 4509] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4508] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4509] <... mount resumed>) = 0 [pid 4509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4508] <... futex resumed>) = 0 [pid 4508] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4509] <... futex resumed>) = 0 [pid 4508] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4509] umount2("./file0", MNT_DETACH [pid 4508] <... futex resumed>) = 0 [pid 4508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4508] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4508] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4509] <... umount2 resumed>) = 0 [pid 4509] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4508] <... clone resumed>, parent_tid=[4510], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4510 [pid 4509] <... futex resumed>) = 0 [pid 4509] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4510 attached [pid 4508] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4510] set_robust_list(0x7fc84e07e9e0, 24 [pid 4508] <... futex resumed>) = 0 [pid 4510] <... set_robust_list resumed>) = 0 [pid 4508] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4510] umount2("./file0", MNT_DETACH) = 0 [pid 4510] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4510] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4508] <... futex resumed>) = 0 [pid 4508] exit_group(0) = ? [pid 4510] <... futex resumed>) = ? [pid 4509] <... futex resumed>) = ? [pid 4509] +++ exited with 0 +++ [pid 4510] +++ exited with 0 +++ [pid 4508] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4511 ./strace-static-x86_64: Process 4511 attached [pid 4511] set_robust_list(0x5555564465e0, 24) = 0 [pid 4511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4511] setpgid(0, 0) = 0 [pid 4511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4511] write(3, "1000", 4) = 4 [pid 4511] close(3) = 0 [pid 4511] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4511] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4511] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4512 attached , parent_tid=[4512], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4512 [pid 4512] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4512] <... futex resumed>) = 0 [pid 4511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4512] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4511] <... futex resumed>) = 0 [pid 4511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4512] <... futex resumed>) = 0 [pid 4512] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4512] <... mount resumed>) = 0 [pid 4512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4511] <... futex resumed>) = 0 [pid 4511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4512] <... futex resumed>) = 0 [pid 4512] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4511] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4512] <... mount resumed>) = 0 [pid 4512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4511] <... futex resumed>) = 0 [pid 4511] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4511] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4511] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4511] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4511] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4512] umount2("./file0", MNT_DETACH [pid 4511] <... clone resumed>, parent_tid=[4513], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4513 [pid 4511] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4512] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4513 attached [pid 4512] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4511] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4513] set_robust_list(0x7fc84e07e9e0, 24 [pid 4512] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4513] <... set_robust_list resumed>) = 0 [pid 4513] umount2("./file0", MNT_DETACH) = 0 [pid 4513] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4513] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4511] <... futex resumed>) = 0 [pid 4511] exit_group(0) = ? [pid 4513] <... futex resumed>) = 230 [pid 4512] <... futex resumed>) = ? [pid 4512] +++ exited with 0 +++ [pid 4513] +++ exited with 0 +++ [pid 4511] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4514 ./strace-static-x86_64: Process 4514 attached [pid 4514] set_robust_list(0x5555564465e0, 24) = 0 [pid 4514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4514] setpgid(0, 0) = 0 [pid 4514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4514] write(3, "1000", 4) = 4 [pid 4514] close(3) = 0 [pid 4514] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4514] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4514] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4515 attached , parent_tid=[4515], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4515 [pid 4515] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4515] <... futex resumed>) = 0 [pid 4515] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4515] <... futex resumed>) = 0 [pid 4515] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4515] <... mount resumed>) = 0 [pid 4515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4514] <... futex resumed>) = 0 [pid 4514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4514] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4515] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4514] <... futex resumed>) = 0 [pid 4515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4514] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4515] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4514] <... futex resumed>) = 0 [pid 4515] umount2("./file0", MNT_DETACH [pid 4514] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4515] <... umount2 resumed>) = 0 [pid 4515] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4514] <... mmap resumed>) = 0x7fc84e05e000 [pid 4515] <... futex resumed>) = 0 [pid 4514] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4515] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4514] <... mprotect resumed>) = 0 [pid 4514] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4516 attached , parent_tid=[4516], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4516 [pid 4516] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4516] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4514] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4516] <... futex resumed>) = 0 [pid 4516] umount2("./file0", MNT_DETACH [pid 4514] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4516] <... umount2 resumed>) = 0 [pid 4516] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4516] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4514] <... futex resumed>) = 0 [pid 4514] exit_group(0) = ? [pid 4515] <... futex resumed>) = ? [pid 4515] +++ exited with 0 +++ [pid 4516] <... futex resumed>) = ? [pid 4516] +++ exited with 0 +++ [pid 4514] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4514, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4517 ./strace-static-x86_64: Process 4517 attached [pid 4517] set_robust_list(0x5555564465e0, 24) = 0 [pid 4517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4517] setpgid(0, 0) = 0 [pid 4517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4517] write(3, "1000", 4) = 4 [pid 4517] close(3) = 0 [pid 4517] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4517] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4517] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4518 attached [pid 4518] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4517] <... clone resumed>, parent_tid=[4518], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4518 [pid 4517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4518] <... futex resumed>) = 0 [pid 4518] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4518] <... futex resumed>) = 0 [pid 4518] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4517] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4518] <... futex resumed>) = 0 [pid 4518] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4517] <... futex resumed>) = 0 [pid 4518] umount2("./file0", MNT_DETACH [pid 4517] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4517] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4517] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4518] <... umount2 resumed>) = 0 [pid 4517] <... mprotect resumed>) = 0 [pid 4517] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4519], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4519 [pid 4518] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4517] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4518] <... futex resumed>) = 0 [pid 4517] <... futex resumed>) = 0 [pid 4518] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4517] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4519 attached [pid 4519] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4519] umount2("./file0", MNT_DETACH) = 0 [pid 4519] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4517] <... futex resumed>) = 0 [pid 4519] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4517] exit_group(0 [pid 4518] <... futex resumed>) = ? [pid 4517] <... exit_group resumed>) = ? [pid 4519] <... futex resumed>) = ? [pid 4518] +++ exited with 0 +++ [pid 4519] +++ exited with 0 +++ [pid 4517] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4520 ./strace-static-x86_64: Process 4520 attached [pid 4520] set_robust_list(0x5555564465e0, 24) = 0 [pid 4520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4520] setpgid(0, 0) = 0 [pid 4520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4520] write(3, "1000", 4) = 4 [pid 4520] close(3) = 0 [pid 4520] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4520] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4520] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4521 attached , parent_tid=[4521], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4521 [pid 4521] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4521] <... futex resumed>) = 0 [pid 4520] <... futex resumed>) = 1 [pid 4521] mkdir("./file0", 000 [pid 4520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4521] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4520] <... futex resumed>) = 0 [pid 4520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4521] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4520] <... futex resumed>) = 0 [pid 4521] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4521] <... mount resumed>) = 0 [pid 4520] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4521] <... futex resumed>) = 0 [pid 4520] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4521] umount2("./file0", MNT_DETACH [pid 4520] <... futex resumed>) = 0 [pid 4520] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4521] <... umount2 resumed>) = 0 [pid 4520] <... futex resumed>) = 0 [pid 4521] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4521] <... futex resumed>) = 0 [pid 4520] <... mmap resumed>) = 0x7fc84e05e000 [pid 4521] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4520] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4520] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4522 attached , parent_tid=[4522], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4522 [pid 4522] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4522] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4520] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4522] <... futex resumed>) = 0 [pid 4520] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4522] umount2("./file0", MNT_DETACH) = 0 [pid 4522] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4520] <... futex resumed>) = 0 [pid 4520] exit_group(0) = ? [pid 4521] <... futex resumed>) = ? [pid 4521] +++ exited with 0 +++ [pid 4522] +++ exited with 0 +++ [pid 4520] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4523 ./strace-static-x86_64: Process 4523 attached [pid 4523] set_robust_list(0x5555564465e0, 24) = 0 [pid 4523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4523] setpgid(0, 0) = 0 [pid 4523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4523] write(3, "1000", 4) = 4 [pid 4523] close(3) = 0 [pid 4523] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4523] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4523] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4524 attached , parent_tid=[4524], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4524 [pid 4524] set_robust_list(0x7fc84e09f9e0, 24 [pid 4523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4524] <... set_robust_list resumed>) = 0 [pid 4523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4524] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4523] <... futex resumed>) = 0 [pid 4524] <... futex resumed>) = 1 [pid 4524] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4524] <... mount resumed>) = 0 [pid 4524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4523] <... futex resumed>) = 0 [pid 4524] <... futex resumed>) = 1 [pid 4523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4524] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4523] <... futex resumed>) = 0 [pid 4523] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4524] <... mount resumed>) = 0 [pid 4524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4523] <... futex resumed>) = 0 [pid 4524] <... futex resumed>) = 1 [pid 4523] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4524] umount2("./file0", MNT_DETACH [pid 4523] <... futex resumed>) = 0 [pid 4523] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4523] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4523] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4524] <... umount2 resumed>) = 0 [pid 4523] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4524] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 4525 attached [pid 4523] <... clone resumed>, parent_tid=[4525], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4525 [pid 4525] set_robust_list(0x7fc84e07e9e0, 24 [pid 4524] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4525] <... set_robust_list resumed>) = 0 [pid 4523] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4525] umount2("./file0", MNT_DETACH [pid 4523] <... futex resumed>) = 0 [pid 4525] <... umount2 resumed>) = 0 [pid 4523] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4525] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4523] <... futex resumed>) = 0 [pid 4523] exit_group(0 [pid 4524] <... futex resumed>) = ? [pid 4523] <... exit_group resumed>) = ? [pid 4524] +++ exited with 0 +++ [pid 4525] +++ exited with 0 +++ [pid 4523] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4523, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4526 ./strace-static-x86_64: Process 4526 attached [pid 4526] set_robust_list(0x5555564465e0, 24) = 0 [pid 4526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4526] setpgid(0, 0) = 0 [pid 4526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4526] write(3, "1000", 4) = 4 [pid 4526] close(3) = 0 [pid 4526] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4526] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4526] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4527 attached , parent_tid=[4527], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4527 [pid 4526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4527] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4527] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4526] <... futex resumed>) = 0 [pid 4527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4527] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4526] <... futex resumed>) = 0 [pid 4527] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4526] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4527] <... mount resumed>) = 0 [pid 4527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4526] <... futex resumed>) = 0 [pid 4526] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4527] umount2("./file0", MNT_DETACH [pid 4526] <... futex resumed>) = 0 [pid 4526] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4526] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4526] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4527] <... umount2 resumed>) = 0 [pid 4526] <... clone resumed>, parent_tid=[4528], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4528 [pid 4526] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4526] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4527] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4527] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4528 attached [pid 4528] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4528] umount2("./file0", MNT_DETACH) = 0 [pid 4528] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4526] <... futex resumed>) = 0 [pid 4526] exit_group(0) = ? [pid 4527] <... futex resumed>) = ? [pid 4527] +++ exited with 0 +++ [pid 4528] <... futex resumed>) = ? [pid 4528] +++ exited with 0 +++ [pid 4526] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4526, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4529 attached , child_tidptr=0x5555564465d0) = 4529 [pid 4529] set_robust_list(0x5555564465e0, 24) = 0 [pid 4529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4529] setpgid(0, 0) = 0 [pid 4529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4529] write(3, "1000", 4) = 4 [pid 4529] close(3) = 0 [pid 4529] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4529] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4529] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4530], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4530 [pid 4529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4530 attached [pid 4530] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4530] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4529] <... futex resumed>) = 0 [pid 4529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4530] <... futex resumed>) = 1 [pid 4530] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4529] <... futex resumed>) = 0 [pid 4529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4529] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4530] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4529] <... futex resumed>) = 0 [pid 4530] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4529] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4530] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4529] <... futex resumed>) = 0 [pid 4529] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4529] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4529] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4530] umount2("./file0", MNT_DETACH [pid 4529] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4530] <... umount2 resumed>) = 0 [pid 4529] <... clone resumed>, parent_tid=[4531], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4531 [pid 4529] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4529] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4531 attached [pid 4531] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4531] umount2("./file0", MNT_DETACH [pid 4530] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4531] <... umount2 resumed>) = 0 [pid 4531] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4530] <... futex resumed>) = 0 [pid 4529] <... futex resumed>) = 0 [pid 4529] exit_group(0) = ? [pid 4531] <... futex resumed>) = ? [pid 4530] +++ exited with 0 +++ [pid 4531] +++ exited with 0 +++ [pid 4529] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4529, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4532 ./strace-static-x86_64: Process 4532 attached [pid 4532] set_robust_list(0x5555564465e0, 24) = 0 [pid 4532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4532] setpgid(0, 0) = 0 [pid 4532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4532] write(3, "1000", 4) = 4 [pid 4532] close(3) = 0 [pid 4532] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4532] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4532] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4533], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4533 [pid 4532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4533 attached [pid 4533] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4533] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4532] <... futex resumed>) = 0 [pid 4532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4533] <... futex resumed>) = 1 [pid 4533] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4532] <... futex resumed>) = 0 [pid 4532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4533] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4532] <... futex resumed>) = 0 [pid 4532] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4532] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4532] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4534], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4534 [pid 4532] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4532] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4534 attached [pid 4534] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4534] umount2("./file0", MNT_DETACH [pid 4533] umount2("./file0", MNT_DETACH [pid 4534] <... umount2 resumed>) = 0 [pid 4534] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4532] <... futex resumed>) = 0 [pid 4534] <... futex resumed>) = 1 [pid 4534] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4533] <... umount2 resumed>) = 0 [pid 4533] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4533] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4532] exit_group(0) = ? [pid 4534] <... futex resumed>) = ? [pid 4534] +++ exited with 0 +++ [pid 4533] <... futex resumed>) = 230 [pid 4533] +++ exited with 0 +++ [pid 4532] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4532, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4535 ./strace-static-x86_64: Process 4535 attached [pid 4535] set_robust_list(0x5555564465e0, 24) = 0 [pid 4535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4535] setpgid(0, 0) = 0 [pid 4535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4535] write(3, "1000", 4) = 4 [pid 4535] close(3) = 0 [pid 4535] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4535] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4535] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4536 attached , parent_tid=[4536], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4536 [pid 4536] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4536] <... futex resumed>) = 0 [pid 4536] mkdir("./file0", 000 [pid 4535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4536] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4535] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4536] <... futex resumed>) = 0 [pid 4536] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4536] <... mount resumed>) = 0 [pid 4536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4535] <... futex resumed>) = 0 [pid 4535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4536] <... futex resumed>) = 0 [pid 4536] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4535] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4536] <... mount resumed>) = 0 [pid 4536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4535] <... futex resumed>) = 0 [pid 4536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4535] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4535] <... futex resumed>) = 0 [pid 4536] umount2("./file0", MNT_DETACH [pid 4535] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4536] <... umount2 resumed>) = 0 [pid 4535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4536] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4535] <... mmap resumed>) = 0x7fc84e05e000 [pid 4536] <... futex resumed>) = 0 [pid 4535] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4536] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4535] <... mprotect resumed>) = 0 [pid 4535] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4537 attached , parent_tid=[4537], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4537 [pid 4537] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4535] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4537] umount2("./file0", MNT_DETACH [pid 4535] <... futex resumed>) = 0 [pid 4535] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4537] <... umount2 resumed>) = 0 [pid 4537] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4535] <... futex resumed>) = 0 [pid 4537] <... futex resumed>) = 1 [pid 4535] exit_group(0 [pid 4537] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4535] <... exit_group resumed>) = ? [pid 4537] <... futex resumed>) = ? [pid 4536] <... futex resumed>) = ? [pid 4536] +++ exited with 0 +++ [pid 4537] +++ exited with 0 +++ [pid 4535] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4535, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4538 ./strace-static-x86_64: Process 4538 attached [pid 4538] set_robust_list(0x5555564465e0, 24) = 0 [pid 4538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4538] setpgid(0, 0) = 0 [pid 4538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4538] write(3, "1000", 4) = 4 [pid 4538] close(3) = 0 [pid 4538] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4538] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4538] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4539 attached , parent_tid=[4539], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4539 [pid 4538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4539] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4539] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4538] <... futex resumed>) = 0 [pid 4538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4539] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4538] <... futex resumed>) = 0 [pid 4539] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4538] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4539] <... mount resumed>) = 0 [pid 4539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4538] <... futex resumed>) = 0 [pid 4538] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4538] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4538] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4539] umount2("./file0", MNT_DETACH [pid 4538] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4540], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4540 ./strace-static-x86_64: Process 4540 attached [pid 4538] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4540] set_robust_list(0x7fc84e07e9e0, 24 [pid 4538] <... futex resumed>) = 0 [pid 4539] <... umount2 resumed>) = 0 [pid 4538] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4539] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4539] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4540] <... set_robust_list resumed>) = 0 [pid 4540] umount2("./file0", MNT_DETACH) = 0 [pid 4540] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4538] <... futex resumed>) = 0 [pid 4538] exit_group(0) = ? [pid 4539] <... futex resumed>) = ? [pid 4539] +++ exited with 0 +++ [pid 4540] +++ exited with 0 +++ [pid 4538] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4538, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4541 ./strace-static-x86_64: Process 4541 attached [pid 4541] set_robust_list(0x5555564465e0, 24) = 0 [pid 4541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4541] setpgid(0, 0) = 0 [pid 4541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4541] write(3, "1000", 4) = 4 [pid 4541] close(3) = 0 [pid 4541] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4541] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4541] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4542], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4542 [pid 4541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4542 attached [pid 4542] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4542] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4541] <... futex resumed>) = 0 [pid 4541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4542] <... futex resumed>) = 1 [pid 4542] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4541] <... futex resumed>) = 0 [pid 4542] <... futex resumed>) = 1 [pid 4541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4542] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4541] <... futex resumed>) = 0 [pid 4541] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4542] <... mount resumed>) = 0 [pid 4542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4541] <... futex resumed>) = 0 [pid 4542] <... futex resumed>) = 1 [pid 4541] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4542] umount2("./file0", MNT_DETACH [pid 4541] <... futex resumed>) = 0 [pid 4541] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4541] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4542] <... umount2 resumed>) = 0 [pid 4542] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4541] <... mprotect resumed>) = 0 [pid 4541] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4542] <... futex resumed>) = 0 [pid 4542] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4543 attached [pid 4541] <... clone resumed>, parent_tid=[4543], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4543 [pid 4543] set_robust_list(0x7fc84e07e9e0, 24 [pid 4541] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4543] <... set_robust_list resumed>) = 0 [pid 4541] <... futex resumed>) = 0 [pid 4543] umount2("./file0", MNT_DETACH [pid 4541] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4543] <... umount2 resumed>) = 0 [pid 4543] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4541] <... futex resumed>) = 0 [pid 4543] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4541] exit_group(0) = ? [pid 4543] <... futex resumed>) = 231 [pid 4542] <... futex resumed>) = ? [pid 4542] +++ exited with 0 +++ [pid 4543] +++ exited with 0 +++ [pid 4541] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4541, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4544 ./strace-static-x86_64: Process 4544 attached [pid 4544] set_robust_list(0x5555564465e0, 24) = 0 [pid 4544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4544] setpgid(0, 0) = 0 [pid 4544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4544] write(3, "1000", 4) = 4 [pid 4544] close(3) = 0 [pid 4544] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4544] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4544] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4545 attached , parent_tid=[4545], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4545 [pid 4545] set_robust_list(0x7fc84e09f9e0, 24 [pid 4544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4545] <... set_robust_list resumed>) = 0 [pid 4544] <... futex resumed>) = 0 [pid 4544] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4545] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4544] <... futex resumed>) = 0 [pid 4544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4544] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4545] <... futex resumed>) = 1 [pid 4545] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4544] <... futex resumed>) = 0 [pid 4545] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4544] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4545] <... mount resumed>) = 0 [pid 4545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4544] <... futex resumed>) = 0 [pid 4544] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4544] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4544] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4544] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4546 attached [pid 4545] umount2("./file0", MNT_DETACH [pid 4546] set_robust_list(0x7fc84e07e9e0, 24 [pid 4544] <... clone resumed>, parent_tid=[4546], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4546 [pid 4544] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4544] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4546] <... set_robust_list resumed>) = 0 [pid 4546] umount2("./file0", MNT_DETACH [pid 4545] <... umount2 resumed>) = 0 [pid 4545] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4546] <... umount2 resumed>) = 0 [pid 4546] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4545] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4546] <... futex resumed>) = 1 [pid 4544] <... futex resumed>) = 0 [pid 4544] exit_group(0) = ? [pid 4545] <... futex resumed>) = ? [pid 4545] +++ exited with 0 +++ [pid 4546] +++ exited with 0 +++ [pid 4544] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4544, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4547 ./strace-static-x86_64: Process 4547 attached [pid 4547] set_robust_list(0x5555564465e0, 24) = 0 [pid 4547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4547] setpgid(0, 0) = 0 [pid 4547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4547] write(3, "1000", 4) = 4 [pid 4547] close(3) = 0 [pid 4547] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4547] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4547] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4548 attached [pid 4548] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4548] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4547] <... clone resumed>, parent_tid=[4548], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4548 [pid 4547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4547] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4548] <... futex resumed>) = 0 [pid 4548] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4547] <... futex resumed>) = 0 [pid 4547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4548] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4547] <... futex resumed>) = 0 [pid 4548] <... mount resumed>) = 0 [pid 4547] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4547] <... futex resumed>) = 0 [pid 4547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4547] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4548] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4547] <... futex resumed>) = 0 [pid 4547] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4547] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4547] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4547] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4547] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4548] umount2("./file0", MNT_DETACH [pid 4547] <... clone resumed>, parent_tid=[4549], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4549 ./strace-static-x86_64: Process 4549 attached [pid 4547] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4549] set_robust_list(0x7fc84e07e9e0, 24 [pid 4547] <... futex resumed>) = 0 [pid 4549] <... set_robust_list resumed>) = 0 [pid 4547] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4549] umount2("./file0", MNT_DETACH [pid 4548] <... umount2 resumed>) = 0 [pid 4548] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4549] <... umount2 resumed>) = 0 [pid 4548] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4549] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4547] <... futex resumed>) = 0 [pid 4547] exit_group(0 [pid 4548] <... futex resumed>) = ? [pid 4547] <... exit_group resumed>) = ? [pid 4548] +++ exited with 0 +++ [pid 4549] +++ exited with 0 +++ [pid 4547] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4547, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4550 ./strace-static-x86_64: Process 4550 attached [pid 4550] set_robust_list(0x5555564465e0, 24) = 0 [pid 4550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4550] setpgid(0, 0) = 0 [pid 4550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4550] write(3, "1000", 4) = 4 [pid 4550] close(3) = 0 [pid 4550] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4550] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4550] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4551 attached , parent_tid=[4551], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4551 [pid 4551] set_robust_list(0x7fc84e09f9e0, 24 [pid 4550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4551] <... set_robust_list resumed>) = 0 [pid 4550] <... futex resumed>) = 0 [pid 4551] mkdir("./file0", 000 [pid 4550] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4551] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4550] <... futex resumed>) = 0 [pid 4551] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4551] <... mount resumed>) = 0 [pid 4550] <... futex resumed>) = 0 [pid 4551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4550] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4551] <... futex resumed>) = 0 [pid 4550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4551] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4551] <... mount resumed>) = 0 [pid 4550] <... futex resumed>) = 0 [pid 4551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4550] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4551] <... futex resumed>) = 0 [pid 4550] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4551] umount2("./file0", MNT_DETACH [pid 4550] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4551] <... umount2 resumed>) = 0 [pid 4550] <... futex resumed>) = 0 [pid 4551] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4550] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4551] <... futex resumed>) = 0 [pid 4550] <... futex resumed>) = 0 [pid 4551] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4550] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4550] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4552], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4552 [pid 4550] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4550] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4552 attached [pid 4552] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4552] umount2("./file0", MNT_DETACH) = 0 [pid 4552] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4550] <... futex resumed>) = 0 [pid 4550] exit_group(0 [pid 4551] <... futex resumed>) = ? [pid 4550] <... exit_group resumed>) = ? [pid 4551] +++ exited with 0 +++ [pid 4552] +++ exited with 0 +++ [pid 4550] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4550, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4553 ./strace-static-x86_64: Process 4553 attached [pid 4553] set_robust_list(0x5555564465e0, 24) = 0 [pid 4553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4553] setpgid(0, 0) = 0 [pid 4553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4553] write(3, "1000", 4) = 4 [pid 4553] close(3) = 0 [pid 4553] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4553] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4553] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4554 attached , parent_tid=[4554], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4554 [pid 4553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4554] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4554] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4553] <... futex resumed>) = 0 [pid 4553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4554] <... futex resumed>) = 1 [pid 4554] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4553] <... futex resumed>) = 0 [pid 4553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4554] <... futex resumed>) = 1 [pid 4554] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4553] <... futex resumed>) = 0 [pid 4553] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4553] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4553] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4555], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4555 [pid 4553] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4553] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4554] <... futex resumed>) = 1 [pid 4554] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4555 attached [pid 4555] set_robust_list(0x7fc84e07e9e0, 24 [pid 4554] <... umount2 resumed>) = 0 [pid 4555] <... set_robust_list resumed>) = 0 [pid 4554] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4555] umount2("./file0", MNT_DETACH [pid 4554] <... futex resumed>) = 0 [pid 4555] <... umount2 resumed>) = 0 [pid 4554] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4555] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4553] <... futex resumed>) = 0 [pid 4555] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4553] exit_group(0 [pid 4555] <... futex resumed>) = 230 [pid 4553] <... exit_group resumed>) = ? [pid 4554] <... futex resumed>) = ? [pid 4554] +++ exited with 0 +++ [pid 4555] +++ exited with 0 +++ [pid 4553] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4553, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4556 attached , child_tidptr=0x5555564465d0) = 4556 [pid 4556] set_robust_list(0x5555564465e0, 24) = 0 [pid 4556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4556] setpgid(0, 0) = 0 [pid 4556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4556] write(3, "1000", 4) = 4 [pid 4556] close(3) = 0 [pid 4556] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4556] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4556] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4557], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4557 [pid 4556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4557 attached ) = 0 [pid 4556] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4557] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4557] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4557] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4556] <... futex resumed>) = 0 [pid 4556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4557] <... futex resumed>) = 0 [pid 4557] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4556] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4557] <... mount resumed>) = 0 [pid 4557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4556] <... futex resumed>) = 0 [pid 4556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4556] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4557] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4556] <... futex resumed>) = 0 [pid 4556] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4556] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4556] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4557] <... futex resumed>) = 1 [pid 4557] umount2("./file0", MNT_DETACH [pid 4556] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4558], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4558 [pid 4556] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4556] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4558 attached [pid 4558] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4558] umount2("./file0", MNT_DETACH) = 0 [pid 4558] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4556] <... futex resumed>) = 0 [pid 4558] <... futex resumed>) = 1 [pid 4558] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4557] <... umount2 resumed>) = 0 [pid 4557] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4557] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4556] exit_group(0 [pid 4558] <... futex resumed>) = ? [pid 4556] <... exit_group resumed>) = ? [pid 4557] <... futex resumed>) = ? [pid 4558] +++ exited with 0 +++ [pid 4557] +++ exited with 0 +++ [pid 4556] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4556, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4559 ./strace-static-x86_64: Process 4559 attached [pid 4559] set_robust_list(0x5555564465e0, 24) = 0 [pid 4559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4559] setpgid(0, 0) = 0 [pid 4559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4559] write(3, "1000", 4) = 4 [pid 4559] close(3) = 0 [pid 4559] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4559] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4559] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4560 attached , parent_tid=[4560], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4560 [pid 4560] set_robust_list(0x7fc84e09f9e0, 24 [pid 4559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4560] <... set_robust_list resumed>) = 0 [pid 4560] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4559] <... futex resumed>) = 0 [pid 4559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4560] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4559] <... futex resumed>) = 0 [pid 4559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4560] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4559] <... futex resumed>) = 0 [pid 4560] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4559] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4559] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4559] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4560] umount2("./file0", MNT_DETACH [pid 4559] <... clone resumed>, parent_tid=[4561], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4561 [pid 4559] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4559] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4561 attached [pid 4561] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4561] umount2("./file0", MNT_DETACH [pid 4560] <... umount2 resumed>) = 0 [pid 4560] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4561] <... umount2 resumed>) = 0 [pid 4561] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4559] <... futex resumed>) = 0 [pid 4561] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4559] exit_group(0) = ? [pid 4561] <... futex resumed>) = 231 [pid 4561] +++ exited with 0 +++ [pid 4560] <... futex resumed>) = ? [pid 4560] +++ exited with 0 +++ [pid 4559] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4559, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4562 ./strace-static-x86_64: Process 4562 attached [pid 4562] set_robust_list(0x5555564465e0, 24) = 0 [pid 4562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4562] setpgid(0, 0) = 0 [pid 4562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4562] write(3, "1000", 4) = 4 [pid 4562] close(3) = 0 [pid 4562] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4562] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4562] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4563 attached , parent_tid=[4563], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4563 [pid 4563] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4563] <... futex resumed>) = 0 [pid 4563] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4563] <... futex resumed>) = 0 [pid 4563] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] <... futex resumed>) = 0 [pid 4562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4563] <... futex resumed>) = 0 [pid 4563] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4562] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4563] <... mount resumed>) = 0 [pid 4563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4562] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4563] <... futex resumed>) = 0 [pid 4563] umount2("./file0", MNT_DETACH [pid 4562] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4563] <... umount2 resumed>) = 0 [pid 4562] <... mmap resumed>) = 0x7fc84e05e000 [pid 4563] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4563] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4562] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4564 attached , parent_tid=[4564], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4564 [pid 4564] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4564] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4564] <... futex resumed>) = 0 [pid 4564] umount2("./file0", MNT_DETACH [pid 4562] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4564] <... umount2 resumed>) = 0 [pid 4564] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4564] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4562] exit_group(0 [pid 4563] <... futex resumed>) = ? [pid 4562] <... exit_group resumed>) = ? [pid 4563] +++ exited with 0 +++ [pid 4564] <... futex resumed>) = ? [pid 4564] +++ exited with 0 +++ [pid 4562] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4562, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4565 attached , child_tidptr=0x5555564465d0) = 4565 [pid 4565] set_robust_list(0x5555564465e0, 24) = 0 [pid 4565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4565] setpgid(0, 0) = 0 [pid 4565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4565] write(3, "1000", 4) = 4 [pid 4565] close(3) = 0 [pid 4565] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4565] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4565] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4566], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4566 [pid 4565] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4566 attached [pid 4566] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4566] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4566] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4565] <... futex resumed>) = 0 [pid 4565] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4566] <... futex resumed>) = 1 [pid 4566] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4566] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4565] <... futex resumed>) = 0 [pid 4565] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4566] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4566] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4565] <... futex resumed>) = 0 [pid 4565] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4566] umount2("./file0", MNT_DETACH [pid 4565] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4565] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4567], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4567 [pid 4566] <... umount2 resumed>) = 0 [pid 4565] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4565] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4567 attached [pid 4567] set_robust_list(0x7fc84e07e9e0, 24 [pid 4566] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4567] <... set_robust_list resumed>) = 0 [pid 4567] umount2("./file0", MNT_DETACH [pid 4566] <... futex resumed>) = 0 [pid 4566] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4567] <... umount2 resumed>) = 0 [pid 4567] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4565] <... futex resumed>) = 0 [pid 4567] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4565] exit_group(0) = ? [pid 4566] <... futex resumed>) = ? [pid 4567] <... futex resumed>) = ? [pid 4567] +++ exited with 0 +++ [pid 4566] +++ exited with 0 +++ [pid 4565] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4565, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4568 ./strace-static-x86_64: Process 4568 attached [pid 4568] set_robust_list(0x5555564465e0, 24) = 0 [pid 4568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4568] setpgid(0, 0) = 0 [pid 4568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4568] write(3, "1000", 4) = 4 [pid 4568] close(3) = 0 [pid 4568] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4568] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4568] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4569 attached [pid 4569] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4569] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4568] <... clone resumed>, parent_tid=[4569], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4569 [pid 4568] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4569] <... futex resumed>) = 0 [pid 4568] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4569] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4569] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4568] <... futex resumed>) = 0 [pid 4569] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4568] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4569] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4568] <... futex resumed>) = 0 [pid 4569] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4568] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4569] <... mount resumed>) = 0 [pid 4569] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4568] <... futex resumed>) = 0 [pid 4568] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4568] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4569] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4569] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4568] <... futex resumed>) = 0 [pid 4569] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4568] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4568] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4569] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4568] <... futex resumed>) = 0 [pid 4569] umount2("./file0", MNT_DETACH [pid 4568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4568] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4569] <... umount2 resumed>) = 0 [pid 4568] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4570], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4570 [pid 4568] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4568] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4570 attached [pid 4570] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4570] umount2("./file0", MNT_DETACH [pid 4569] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4570] <... umount2 resumed>) = 0 [pid 4570] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4569] <... futex resumed>) = 0 [pid 4568] <... futex resumed>) = 0 [pid 4570] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4569] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4568] exit_group(0) = ? [pid 4569] <... futex resumed>) = 231 [pid 4570] <... futex resumed>) = ? [pid 4569] +++ exited with 0 +++ [pid 4570] +++ exited with 0 +++ [pid 4568] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4568, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4571 attached , child_tidptr=0x5555564465d0) = 4571 [pid 4571] set_robust_list(0x5555564465e0, 24) = 0 [pid 4571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4571] setpgid(0, 0) = 0 [pid 4571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4571] write(3, "1000", 4) = 4 [pid 4571] close(3) = 0 [pid 4571] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4571] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4571] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4571] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4572 attached , parent_tid=[4572], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4572 [pid 4572] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4572] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4571] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4572] <... futex resumed>) = 0 [pid 4572] mkdir("./file0", 000 [pid 4571] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4572] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4572] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4571] <... futex resumed>) = 0 [pid 4571] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4571] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4572] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4572] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4571] <... futex resumed>) = 0 [pid 4571] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4571] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4572] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4572] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4571] <... futex resumed>) = 0 [pid 4572] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4571] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4572] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4571] <... futex resumed>) = 0 [pid 4572] umount2("./file0", MNT_DETACH [pid 4571] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4572] <... umount2 resumed>) = 0 [pid 4571] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4572] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4571] <... mmap resumed>) = 0x7fc84e05e000 [pid 4572] <... futex resumed>) = 0 [pid 4571] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4572] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4571] <... mprotect resumed>) = 0 [pid 4571] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4573 attached [pid 4573] set_robust_list(0x7fc84e07e9e0, 24 [pid 4571] <... clone resumed>, parent_tid=[4573], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4573 [pid 4573] <... set_robust_list resumed>) = 0 [pid 4573] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4571] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4573] <... futex resumed>) = 0 [pid 4573] umount2("./file0", MNT_DETACH [pid 4571] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4573] <... umount2 resumed>) = 0 [pid 4573] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4573] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4571] exit_group(0 [pid 4572] <... futex resumed>) = ? [pid 4571] <... exit_group resumed>) = ? [pid 4573] <... futex resumed>) = ? [pid 4573] +++ exited with 0 +++ [pid 4572] +++ exited with 0 +++ [pid 4571] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4571, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4574 attached [pid 4574] set_robust_list(0x5555564465e0, 24) = 0 [pid 4574] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 4574 [pid 4574] <... prctl resumed>) = 0 [pid 4574] setpgid(0, 0) = 0 [pid 4574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4574] write(3, "1000", 4) = 4 [pid 4574] close(3) = 0 [pid 4574] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4574] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4574] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4575], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4575 ./strace-static-x86_64: Process 4575 attached [pid 4575] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4575] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4575] <... futex resumed>) = 0 [pid 4575] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4575] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4575] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4574] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4575] <... futex resumed>) = 0 [pid 4575] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4574] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4575] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4575] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4574] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4575] <... futex resumed>) = 0 [pid 4575] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4574] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4575] <... mount resumed>) = 0 [pid 4575] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4575] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] <... futex resumed>) = 0 [pid 4574] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4575] <... futex resumed>) = 0 [pid 4575] umount2("./file0", MNT_DETACH [pid 4574] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4575] <... umount2 resumed>) = 0 [pid 4575] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4575] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] <... mmap resumed>) = 0x7fc84e05e000 [pid 4574] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4574] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4576 attached [pid 4576] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4576] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] <... clone resumed>, parent_tid=[4576], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4576 [pid 4574] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4576] <... futex resumed>) = 0 [pid 4576] umount2("./file0", MNT_DETACH [pid 4574] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4576] <... umount2 resumed>) = 0 [pid 4576] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4576] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4574] exit_group(0 [pid 4575] <... futex resumed>) = ? [pid 4574] <... exit_group resumed>) = ? [pid 4575] +++ exited with 0 +++ [pid 4576] <... futex resumed>) = ? [pid 4576] +++ exited with 0 +++ [pid 4574] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4574, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4577 ./strace-static-x86_64: Process 4577 attached [pid 4577] set_robust_list(0x5555564465e0, 24) = 0 [pid 4577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4577] setpgid(0, 0) = 0 [pid 4577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4577] write(3, "1000", 4) = 4 [pid 4577] close(3) = 0 [pid 4577] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4577] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4577] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4577] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4578 attached , parent_tid=[4578], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4578 [pid 4578] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4578] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4577] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4578] <... futex resumed>) = 0 [pid 4577] <... futex resumed>) = 1 [pid 4578] mkdir("./file0", 000 [pid 4577] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4578] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4578] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4577] <... futex resumed>) = 0 [pid 4577] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4577] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4578] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4578] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4577] <... futex resumed>) = 0 [pid 4577] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4578] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4577] <... futex resumed>) = 0 [pid 4577] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4578] <... mount resumed>) = 0 [pid 4578] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4577] <... futex resumed>) = 0 [pid 4577] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4577] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4577] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4577] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4578] umount2("./file0", MNT_DETACH [pid 4577] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4579], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4579 [pid 4577] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4577] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4579 attached [pid 4579] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4579] umount2("./file0", MNT_DETACH) = 0 [pid 4579] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4577] <... futex resumed>) = 0 [pid 4579] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4578] <... umount2 resumed>) = 0 [pid 4578] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4578] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4577] exit_group(0) = ? [pid 4579] <... futex resumed>) = ? [pid 4579] +++ exited with 0 +++ [pid 4578] <... futex resumed>) = ? [pid 4578] +++ exited with 0 +++ [pid 4577] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4577, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4580 attached , child_tidptr=0x5555564465d0) = 4580 [pid 4580] set_robust_list(0x5555564465e0, 24) = 0 [pid 4580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4580] setpgid(0, 0) = 0 [pid 4580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4580] write(3, "1000", 4) = 4 [pid 4580] close(3) = 0 [pid 4580] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4580] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4580] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4581 attached , parent_tid=[4581], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4581 [pid 4581] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4581] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4580] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4581] <... futex resumed>) = 0 [pid 4581] mkdir("./file0", 000 [pid 4580] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4581] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4581] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4581] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4580] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4580] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4581] <... futex resumed>) = 0 [pid 4581] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4580] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4581] <... mount resumed>) = 0 [pid 4581] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4581] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4580] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4580] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4581] <... futex resumed>) = 0 [pid 4581] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4580] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4581] <... mount resumed>) = 0 [pid 4581] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4580] <... futex resumed>) = 0 [pid 4580] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4580] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4580] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4580] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4581] umount2("./file0", MNT_DETACH [pid 4580] <... clone resumed>, parent_tid=[4582], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4582 [pid 4580] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4580] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4582 attached [pid 4582] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4582] umount2("./file0", MNT_DETACH [pid 4581] <... umount2 resumed>) = 0 [pid 4582] <... umount2 resumed>) = 0 [pid 4581] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4582] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4580] <... futex resumed>) = 0 [pid 4580] exit_group(0) = ? [pid 4582] <... futex resumed>) = ? [pid 4582] +++ exited with 0 +++ [pid 4581] <... futex resumed>) = ? [pid 4581] +++ exited with 0 +++ [pid 4580] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4580, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4583 attached , child_tidptr=0x5555564465d0) = 4583 [pid 4583] set_robust_list(0x5555564465e0, 24) = 0 [pid 4583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4583] setpgid(0, 0) = 0 [pid 4583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4583] write(3, "1000", 4) = 4 [pid 4583] close(3) = 0 [pid 4583] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4583] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4583] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4583] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4584 attached , parent_tid=[4584], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4584 [pid 4584] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4584] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4583] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4584] <... futex resumed>) = 0 [pid 4583] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4584] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4584] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4583] <... futex resumed>) = 0 [pid 4584] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4583] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4583] <... futex resumed>) = 0 [pid 4584] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4583] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4584] <... mount resumed>) = 0 [pid 4584] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4583] <... futex resumed>) = 0 [pid 4584] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4583] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4583] <... futex resumed>) = 0 [pid 4584] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4583] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4584] <... mount resumed>) = 0 [pid 4584] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4583] <... futex resumed>) = 0 [pid 4584] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4583] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4584] umount2("./file0", MNT_DETACH [pid 4583] <... futex resumed>) = 0 [pid 4583] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4583] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4584] <... umount2 resumed>) = 0 [pid 4583] <... mmap resumed>) = 0x7fc84e05e000 [pid 4584] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4584] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4583] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4583] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4585], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4585 [pid 4583] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4583] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4585 attached [pid 4585] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4585] umount2("./file0", MNT_DETACH) = 0 [pid 4585] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4583] <... futex resumed>) = 0 [pid 4583] exit_group(0 [pid 4584] <... futex resumed>) = ? [pid 4583] <... exit_group resumed>) = ? [pid 4584] +++ exited with 0 +++ [pid 4585] <... futex resumed>) = ? [pid 4585] +++ exited with 0 +++ [pid 4583] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4583, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4586 ./strace-static-x86_64: Process 4586 attached [pid 4586] set_robust_list(0x5555564465e0, 24) = 0 [pid 4586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4586] setpgid(0, 0) = 0 [pid 4586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4586] write(3, "1000", 4) = 4 [pid 4586] close(3) = 0 [pid 4586] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4586] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4586] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4587], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4587 [pid 4586] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4586] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4587 attached [pid 4587] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4587] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4587] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4587] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4586] <... futex resumed>) = 0 [pid 4586] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4587] <... futex resumed>) = 0 [pid 4587] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4586] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4587] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4586] <... futex resumed>) = 0 [pid 4586] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4586] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4587] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4587] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4586] <... futex resumed>) = 0 [pid 4587] umount2("./file0", MNT_DETACH [pid 4586] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4586] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4587] <... umount2 resumed>) = 0 [pid 4587] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4586] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4587] <... futex resumed>) = 0 [pid 4587] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4586] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4588 attached , parent_tid=[4588], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4588 [pid 4588] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4588] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4586] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4588] <... futex resumed>) = 0 [pid 4588] umount2("./file0", MNT_DETACH [pid 4586] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4588] <... umount2 resumed>) = 0 [pid 4588] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4588] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4586] exit_group(0 [pid 4587] <... futex resumed>) = ? [pid 4586] <... exit_group resumed>) = ? [pid 4588] <... futex resumed>) = ? [pid 4588] +++ exited with 0 +++ [pid 4587] +++ exited with 0 +++ [pid 4586] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4586, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4589 ./strace-static-x86_64: Process 4589 attached [pid 4589] set_robust_list(0x5555564465e0, 24) = 0 [pid 4589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4589] setpgid(0, 0) = 0 [pid 4589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4589] write(3, "1000", 4) = 4 [pid 4589] close(3) = 0 [pid 4589] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4589] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4589] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4589] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4590 attached , parent_tid=[4590], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4590 [pid 4590] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4590] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4590] <... futex resumed>) = 0 [pid 4589] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4590] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4590] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4589] <... futex resumed>) = 0 [pid 4590] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4589] <... futex resumed>) = 0 [pid 4590] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4589] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4590] <... mount resumed>) = 0 [pid 4590] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4589] <... futex resumed>) = 0 [pid 4590] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4589] <... futex resumed>) = 0 [pid 4590] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4589] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4590] <... mount resumed>) = 0 [pid 4590] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4589] <... futex resumed>) = 0 [pid 4590] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4589] <... futex resumed>) = 0 [pid 4590] umount2("./file0", MNT_DETACH [pid 4589] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4590] <... umount2 resumed>) = 0 [pid 4589] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4590] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4589] <... mmap resumed>) = 0x7fc84e05e000 [pid 4589] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4590] <... futex resumed>) = 0 [pid 4590] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] <... mprotect resumed>) = 0 [pid 4589] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4591 attached , parent_tid=[4591], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4591 [pid 4591] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4591] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4591] <... futex resumed>) = 0 [pid 4589] <... futex resumed>) = 1 [pid 4591] umount2("./file0", MNT_DETACH [pid 4589] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4591] <... umount2 resumed>) = 0 [pid 4591] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4591] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4589] <... futex resumed>) = 0 [pid 4589] exit_group(0) = ? [pid 4590] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4590] +++ exited with 0 +++ [pid 4591] <... futex resumed>) = ? [pid 4591] +++ exited with 0 +++ [pid 4589] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4589, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4592 ./strace-static-x86_64: Process 4592 attached [pid 4592] set_robust_list(0x5555564465e0, 24) = 0 [pid 4592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4592] setpgid(0, 0) = 0 [pid 4592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4592] write(3, "1000", 4) = 4 [pid 4592] close(3) = 0 [pid 4592] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4592] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4592] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4592] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4593 attached , parent_tid=[4593], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4593 [pid 4593] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4593] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4592] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4593] <... futex resumed>) = 0 [pid 4593] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4593] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4593] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4592] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4592] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4593] <... futex resumed>) = 0 [pid 4593] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4592] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4593] <... mount resumed>) = 0 [pid 4593] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4593] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4592] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4593] <... futex resumed>) = 0 [pid 4593] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4592] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4593] <... mount resumed>) = 0 [pid 4593] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4593] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4592] <... futex resumed>) = 0 [pid 4592] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4593] <... futex resumed>) = 0 [pid 4592] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4593] umount2("./file0", MNT_DETACH [pid 4592] <... futex resumed>) = 0 [pid 4592] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4593] <... umount2 resumed>) = 0 [pid 4592] <... mmap resumed>) = 0x7fc84e05e000 [pid 4592] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4593] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4592] <... mprotect resumed>) = 0 [pid 4593] <... futex resumed>) = 0 [pid 4592] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4593] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4594 attached [pid 4592] <... clone resumed>, parent_tid=[4594], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4594 [pid 4594] set_robust_list(0x7fc84e07e9e0, 24 [pid 4592] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4594] <... set_robust_list resumed>) = 0 [pid 4592] <... futex resumed>) = 0 [pid 4594] umount2("./file0", MNT_DETACH [pid 4592] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4594] <... umount2 resumed>) = 0 [pid 4594] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4592] <... futex resumed>) = 0 [pid 4594] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4592] exit_group(0 [pid 4594] <... futex resumed>) = ? [pid 4593] <... futex resumed>) = ? [pid 4592] <... exit_group resumed>) = ? [pid 4593] +++ exited with 0 +++ [pid 4594] +++ exited with 0 +++ [pid 4592] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4592, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4595 ./strace-static-x86_64: Process 4595 attached [pid 4595] set_robust_list(0x5555564465e0, 24) = 0 [pid 4595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4595] setpgid(0, 0) = 0 [pid 4595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4595] write(3, "1000", 4) = 4 [pid 4595] close(3) = 0 [pid 4595] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4595] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4595] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4595] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4596 attached , parent_tid=[4596], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4596 [pid 4596] set_robust_list(0x7fc84e09f9e0, 24 [pid 4595] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4596] <... set_robust_list resumed>) = 0 [pid 4595] <... futex resumed>) = 0 [pid 4596] mkdir("./file0", 000 [pid 4595] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4596] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4596] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4595] <... futex resumed>) = 0 [pid 4596] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4595] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4596] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4595] <... futex resumed>) = 0 [pid 4596] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4595] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4596] <... mount resumed>) = 0 [pid 4596] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4595] <... futex resumed>) = 0 [pid 4596] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4595] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4595] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4596] <... mount resumed>) = 0 [pid 4596] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4595] <... futex resumed>) = 0 [pid 4596] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4595] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4595] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4595] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4595] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4595] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4597 attached [pid 4596] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4595] <... clone resumed>, parent_tid=[4597], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4597 [pid 4597] set_robust_list(0x7fc84e07e9e0, 24 [pid 4596] umount2("./file0", MNT_DETACH [pid 4595] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4595] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4596] <... umount2 resumed>) = 0 [pid 4597] <... set_robust_list resumed>) = 0 [pid 4596] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4597] umount2("./file0", MNT_DETACH [pid 4596] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4597] <... umount2 resumed>) = 0 [pid 4597] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4595] <... futex resumed>) = 0 [pid 4595] exit_group(0 [pid 4596] <... futex resumed>) = ? [pid 4595] <... exit_group resumed>) = ? [pid 4596] +++ exited with 0 +++ [pid 4597] +++ exited with 0 +++ [pid 4595] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4595, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4598 ./strace-static-x86_64: Process 4598 attached [pid 4598] set_robust_list(0x5555564465e0, 24) = 0 [pid 4598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4598] setpgid(0, 0) = 0 [pid 4598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4598] write(3, "1000", 4) = 4 [pid 4598] close(3) = 0 [pid 4598] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4598] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4598] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4599 attached , parent_tid=[4599], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4599 [pid 4599] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4599] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4598] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4599] <... futex resumed>) = 0 [pid 4599] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4599] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4599] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4598] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4598] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4599] <... futex resumed>) = 0 [pid 4599] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4598] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4599] <... mount resumed>) = 0 [pid 4599] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4599] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4598] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4599] <... futex resumed>) = 0 [pid 4599] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4598] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4599] <... mount resumed>) = 0 [pid 4599] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4598] <... futex resumed>) = 0 [pid 4598] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4598] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4598] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4598] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4600], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4600 [pid 4598] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4598] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4600 attached [pid 4600] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4600] umount2("./file0", MNT_DETACH [pid 4599] umount2("./file0", MNT_DETACH) = 0 [pid 4600] <... umount2 resumed>) = 0 [pid 4600] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4598] <... futex resumed>) = 0 [pid 4600] <... futex resumed>) = 1 [pid 4599] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4600] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4599] <... futex resumed>) = 0 [pid 4599] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4598] exit_group(0) = ? [pid 4600] <... futex resumed>) = ? [pid 4599] <... futex resumed>) = ? [pid 4600] +++ exited with 0 +++ [pid 4599] +++ exited with 0 +++ [pid 4598] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4598, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4601 ./strace-static-x86_64: Process 4601 attached [pid 4601] set_robust_list(0x5555564465e0, 24) = 0 [pid 4601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4601] setpgid(0, 0) = 0 [pid 4601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4601] write(3, "1000", 4) = 4 [pid 4601] close(3) = 0 [pid 4601] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4601] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4601] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4601] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4602 attached , parent_tid=[4602], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4602 [pid 4601] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4601] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4602] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4602] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4602] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4601] <... futex resumed>) = 0 [pid 4601] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4602] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4601] <... futex resumed>) = 0 [pid 4601] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4602] <... mount resumed>) = 0 [pid 4602] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4601] <... futex resumed>) = 0 [pid 4601] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4601] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4602] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4602] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4601] <... futex resumed>) = 0 [pid 4601] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4601] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4601] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4601] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4601] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4602] umount2("./file0", MNT_DETACH) = 0 [pid 4602] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4601] <... clone resumed>, parent_tid=[4603], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4603 [pid 4601] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4601] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4603 attached [pid 4603] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4603] umount2("./file0", MNT_DETACH [pid 4602] <... futex resumed>) = 0 [pid 4603] <... umount2 resumed>) = 0 [pid 4602] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4603] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4601] <... futex resumed>) = 0 [pid 4601] exit_group(0) = ? [pid 4602] <... futex resumed>) = ? [pid 4602] +++ exited with 0 +++ [pid 4603] <... futex resumed>) = ? [pid 4603] +++ exited with 0 +++ [pid 4601] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4601, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4604 ./strace-static-x86_64: Process 4604 attached [pid 4604] set_robust_list(0x5555564465e0, 24) = 0 [pid 4604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4604] setpgid(0, 0) = 0 [pid 4604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4604] write(3, "1000", 4) = 4 [pid 4604] close(3) = 0 [pid 4604] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4604] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4604] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4605 attached , parent_tid=[4605], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4605 [pid 4605] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4605] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4604] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4605] <... futex resumed>) = 0 [pid 4605] mkdir("./file0", 000 [pid 4604] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4605] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4605] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4605] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4604] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4605] <... futex resumed>) = 0 [pid 4605] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4605] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4604] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4605] <... futex resumed>) = 0 [pid 4605] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4604] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4605] <... futex resumed>) = 0 [pid 4605] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4604] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4605] <... mount resumed>) = 0 [pid 4605] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4605] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4604] <... futex resumed>) = 0 [pid 4604] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4605] <... futex resumed>) = 0 [pid 4605] umount2("./file0", MNT_DETACH [pid 4604] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4604] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4604] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4605] <... umount2 resumed>) = 0 [pid 4605] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4604] <... clone resumed>, parent_tid=[4606], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4606 [pid 4605] <... futex resumed>) = 0 [pid 4604] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4605] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4604] <... futex resumed>) = 0 [pid 4604] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4606 attached [pid 4606] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4606] umount2("./file0", MNT_DETACH) = 0 [pid 4606] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4604] <... futex resumed>) = 0 [pid 4606] <... futex resumed>) = 1 [pid 4604] exit_group(0) = ? [pid 4605] <... futex resumed>) = ? [pid 4606] +++ exited with 0 +++ [pid 4605] +++ exited with 0 +++ [pid 4604] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4604, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4607 attached , child_tidptr=0x5555564465d0) = 4607 [pid 4607] set_robust_list(0x5555564465e0, 24) = 0 [pid 4607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4607] setpgid(0, 0) = 0 [pid 4607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4607] write(3, "1000", 4) = 4 [pid 4607] close(3) = 0 [pid 4607] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4607] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4607] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4608], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4608 [pid 4607] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4608 attached [pid 4608] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4608] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4608] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4607] <... futex resumed>) = 0 [pid 4607] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4608] <... futex resumed>) = 1 [pid 4608] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4608] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4607] <... futex resumed>) = 0 [pid 4607] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4608] <... futex resumed>) = 1 [pid 4608] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4608] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4607] <... futex resumed>) = 0 [pid 4607] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4607] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4607] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4609], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4609 [pid 4608] umount2("./file0", MNT_DETACH [pid 4607] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4607] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4609 attached [pid 4609] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4609] umount2("./file0", MNT_DETACH) = 0 [pid 4609] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4607] <... futex resumed>) = 0 [pid 4609] <... futex resumed>) = 1 [pid 4609] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4608] <... umount2 resumed>) = 0 [pid 4608] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4608] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4607] exit_group(0) = ? [pid 4609] <... futex resumed>) = ? [pid 4608] <... futex resumed>) = ? [pid 4609] +++ exited with 0 +++ [pid 4608] +++ exited with 0 +++ [pid 4607] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4607, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4610 ./strace-static-x86_64: Process 4610 attached [pid 4610] set_robust_list(0x5555564465e0, 24) = 0 [pid 4610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4610] setpgid(0, 0) = 0 [pid 4610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4610] write(3, "1000", 4) = 4 [pid 4610] close(3) = 0 [pid 4610] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4610] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4610] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4611 attached , parent_tid=[4611], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4611 [pid 4611] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4611] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4610] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4611] <... futex resumed>) = 0 [pid 4611] mkdir("./file0", 000 [pid 4610] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4611] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4611] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4611] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4610] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4610] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4611] <... futex resumed>) = 0 [pid 4611] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4610] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4611] <... mount resumed>) = 0 [pid 4611] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4611] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4610] <... futex resumed>) = 0 [pid 4610] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4611] <... futex resumed>) = 0 [pid 4611] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4610] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4611] <... mount resumed>) = 0 [pid 4611] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4611] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4610] <... futex resumed>) = 0 [pid 4610] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4611] <... futex resumed>) = 0 [pid 4611] umount2("./file0", MNT_DETACH [pid 4610] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4611] <... umount2 resumed>) = 0 [pid 4610] <... mmap resumed>) = 0x7fc84e05e000 [pid 4611] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4611] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4610] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4610] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4612 attached , parent_tid=[4612], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4612 [pid 4612] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4610] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4612] umount2("./file0", MNT_DETACH [pid 4610] <... futex resumed>) = 0 [pid 4610] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4612] <... umount2 resumed>) = 0 [pid 4612] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4612] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4610] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4610] exit_group(0 [pid 4611] <... futex resumed>) = ? [pid 4610] <... exit_group resumed>) = ? [pid 4611] +++ exited with 0 +++ [pid 4612] <... futex resumed>) = ? [pid 4612] +++ exited with 0 +++ [pid 4610] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4610, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4613 ./strace-static-x86_64: Process 4613 attached [pid 4613] set_robust_list(0x5555564465e0, 24) = 0 [pid 4613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4613] setpgid(0, 0) = 0 [pid 4613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4613] write(3, "1000", 4) = 4 [pid 4613] close(3) = 0 [pid 4613] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4613] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4613] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4614 attached , parent_tid=[4614], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4614 [pid 4614] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4614] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4613] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4614] <... futex resumed>) = 0 [pid 4614] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4613] <... futex resumed>) = 0 [pid 4614] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4613] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4614] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4613] <... futex resumed>) = 0 [pid 4613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4614] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4613] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4614] <... mount resumed>) = 0 [pid 4614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4613] <... futex resumed>) = 0 [pid 4613] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4613] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4613] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4614] umount2("./file0", MNT_DETACH [pid 4613] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4615], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4615 [pid 4613] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4613] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4615 attached [pid 4615] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4615] umount2("./file0", MNT_DETACH) = 0 [pid 4615] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4613] <... futex resumed>) = 0 [pid 4615] <... futex resumed>) = 1 [pid 4615] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4614] <... umount2 resumed>) = 0 [pid 4614] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4614] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4613] exit_group(0) = ? [pid 4614] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4615] <... futex resumed>) = ? [pid 4615] +++ exited with 0 +++ [pid 4614] +++ exited with 0 +++ [pid 4613] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4613, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4616 ./strace-static-x86_64: Process 4616 attached [pid 4616] set_robust_list(0x5555564465e0, 24) = 0 [pid 4616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4616] setpgid(0, 0) = 0 [pid 4616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4616] write(3, "1000", 4) = 4 [pid 4616] close(3) = 0 [pid 4616] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4616] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4616] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4617 attached , parent_tid=[4617], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4617 [pid 4617] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4617] <... futex resumed>) = 0 [pid 4617] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4617] <... futex resumed>) = 0 [pid 4617] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4616] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4617] <... mount resumed>) = 0 [pid 4617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4617] <... futex resumed>) = 0 [pid 4616] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4617] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] <... futex resumed>) = 0 [pid 4616] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4617] <... futex resumed>) = 0 [pid 4617] umount2("./file0", MNT_DETACH [pid 4616] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4617] <... umount2 resumed>) = 0 [pid 4617] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4617] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4616] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4616] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4618 attached , parent_tid=[4618], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4618 [pid 4618] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4618] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4618] <... futex resumed>) = 0 [pid 4618] umount2("./file0", MNT_DETACH) = 0 [pid 4618] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4618] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4616] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4616] exit_group(0 [pid 4617] <... futex resumed>) = ? [pid 4616] <... exit_group resumed>) = ? [pid 4617] +++ exited with 0 +++ [pid 4618] <... futex resumed>) = ? [pid 4618] +++ exited with 0 +++ [pid 4616] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4619 ./strace-static-x86_64: Process 4619 attached [pid 4619] set_robust_list(0x5555564465e0, 24) = 0 [pid 4619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4619] setpgid(0, 0) = 0 [pid 4619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4619] write(3, "1000", 4) = 4 [pid 4619] close(3) = 0 [pid 4619] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4619] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4619] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4620 attached , parent_tid=[4620], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4620 [pid 4619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4619] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4620] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4620] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4619] <... futex resumed>) = 0 [pid 4620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4620] <... futex resumed>) = 0 [pid 4619] <... futex resumed>) = 1 [pid 4620] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4619] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4620] <... mount resumed>) = 0 [pid 4620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4619] <... futex resumed>) = 0 [pid 4619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4620] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4619] <... futex resumed>) = 0 [pid 4620] <... mount resumed>) = 0 [pid 4619] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4619] <... futex resumed>) = 0 [pid 4620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4619] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4619] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4619] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4619] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4620] umount2("./file0", MNT_DETACH [pid 4619] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4620] <... umount2 resumed>) = 0 [pid 4619] <... clone resumed>, parent_tid=[4621], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4621 [pid 4620] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4619] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4621 attached [pid 4620] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4619] <... futex resumed>) = 0 [pid 4621] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4621] umount2("./file0", MNT_DETACH [pid 4619] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4621] <... umount2 resumed>) = 0 [pid 4621] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4619] <... futex resumed>) = 0 [pid 4621] <... futex resumed>) = 1 [pid 4619] exit_group(0 [pid 4621] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 4619] <... exit_group resumed>) = ? [pid 4621] +++ exited with 0 +++ [pid 4620] <... futex resumed>) = ? [pid 4620] +++ exited with 0 +++ [pid 4619] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4619, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4622 attached , child_tidptr=0x5555564465d0) = 4622 [pid 4622] set_robust_list(0x5555564465e0, 24) = 0 [pid 4622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4622] setpgid(0, 0) = 0 [pid 4622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4622] write(3, "1000", 4) = 4 [pid 4622] close(3) = 0 [pid 4622] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4622] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4622] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4623], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4623 [pid 4622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4622] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4623 attached [pid 4623] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4623] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4622] <... futex resumed>) = 0 [pid 4622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4622] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4623] <... futex resumed>) = 1 [pid 4623] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4622] <... futex resumed>) = 0 [pid 4623] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4622] <... futex resumed>) = 0 [pid 4623] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4622] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4623] <... mount resumed>) = 0 [pid 4623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4622] <... futex resumed>) = 0 [pid 4622] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4622] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4622] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4622] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4623] umount2("./file0", MNT_DETACH [pid 4622] <... clone resumed>, parent_tid=[4624], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4624 [pid 4622] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4623] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4624 attached [pid 4624] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4624] umount2("./file0", MNT_DETACH [pid 4623] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4622] <... futex resumed>) = 0 [pid 4622] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4624] <... umount2 resumed>) = 0 [pid 4624] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4622] <... futex resumed>) = 0 [pid 4622] exit_group(0) = ? [pid 4624] <... futex resumed>) = ? [pid 4624] +++ exited with 0 +++ [pid 4623] <... futex resumed>) = ? [pid 4623] +++ exited with 0 +++ [pid 4622] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4622, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4625 attached , child_tidptr=0x5555564465d0) = 4625 [pid 4625] set_robust_list(0x5555564465e0, 24) = 0 [pid 4625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4625] setpgid(0, 0) = 0 [pid 4625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4625] write(3, "1000", 4) = 4 [pid 4625] close(3) = 0 [pid 4625] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4625] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4625] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4626], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4626 [pid 4625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4626 attached [pid 4626] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4626] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4625] <... futex resumed>) = 0 [pid 4625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4626] <... futex resumed>) = 1 [pid 4626] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4625] <... futex resumed>) = 0 [pid 4625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4626] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4625] <... futex resumed>) = 0 [pid 4625] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4625] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4625] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4626] umount2("./file0", MNT_DETACH [pid 4625] <... clone resumed>, parent_tid=[4627], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4627 [pid 4625] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4625] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4627 attached [pid 4627] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4627] umount2("./file0", MNT_DETACH) = 0 [pid 4627] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4625] <... futex resumed>) = 0 [pid 4627] <... futex resumed>) = 1 [pid 4627] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4626] <... umount2 resumed>) = 0 [pid 4626] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4626] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4625] exit_group(0) = ? [pid 4627] <... futex resumed>) = ? [pid 4627] +++ exited with 0 +++ [pid 4626] <... futex resumed>) = ? [pid 4626] +++ exited with 0 +++ [pid 4625] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4625, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4628 ./strace-static-x86_64: Process 4628 attached [pid 4628] set_robust_list(0x5555564465e0, 24) = 0 [pid 4628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4628] setpgid(0, 0) = 0 [pid 4628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4628] write(3, "1000", 4) = 4 [pid 4628] close(3) = 0 [pid 4628] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4628] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4628] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4629 attached , parent_tid=[4629], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4629 [pid 4628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4629] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4629] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4628] <... futex resumed>) = 0 [pid 4628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4629] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4628] <... futex resumed>) = 0 [pid 4628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4629] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4628] <... futex resumed>) = 0 [pid 4628] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4628] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4628] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4630], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4630 [pid 4628] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4628] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4630 attached [pid 4630] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4630] umount2("./file0", MNT_DETACH [pid 4629] umount2("./file0", MNT_DETACH [pid 4630] <... umount2 resumed>) = 0 [pid 4630] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4628] <... futex resumed>) = 0 [pid 4629] <... umount2 resumed>) = 0 [pid 4630] <... futex resumed>) = 1 [pid 4630] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4629] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4629] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4628] exit_group(0) = ? [pid 4630] <... futex resumed>) = ? [pid 4629] <... futex resumed>) = ? [pid 4630] +++ exited with 0 +++ [pid 4629] +++ exited with 0 +++ [pid 4628] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4628, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4631 ./strace-static-x86_64: Process 4631 attached [pid 4631] set_robust_list(0x5555564465e0, 24) = 0 [pid 4631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4631] setpgid(0, 0) = 0 [pid 4631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4631] write(3, "1000", 4) = 4 [pid 4631] close(3) = 0 [pid 4631] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4631] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4631] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4632], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4632 [pid 4631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4631] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4632 attached [pid 4632] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4632] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4631] <... futex resumed>) = 0 [pid 4631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4631] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4632] <... futex resumed>) = 1 [pid 4632] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4631] <... futex resumed>) = 0 [pid 4631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4631] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4632] <... futex resumed>) = 1 [pid 4632] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4631] <... futex resumed>) = 0 [pid 4632] umount2("./file0", MNT_DETACH [pid 4631] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4631] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4632] <... umount2 resumed>) = 0 [pid 4631] <... futex resumed>) = 0 [pid 4631] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4631] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4631] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4632] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4633 attached ) = 0 [pid 4631] <... clone resumed>, parent_tid=[4633], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4633 [pid 4631] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4631] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4633] set_robust_list(0x7fc84e07e9e0, 24 [pid 4632] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4633] <... set_robust_list resumed>) = 0 [pid 4633] umount2("./file0", MNT_DETACH) = 0 [pid 4633] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4631] <... futex resumed>) = 0 [pid 4633] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4631] exit_group(0 [pid 4633] <... futex resumed>) = ? [pid 4631] <... exit_group resumed>) = ? [pid 4633] +++ exited with 0 +++ [pid 4632] <... futex resumed>) = ? [pid 4632] +++ exited with 0 +++ [pid 4631] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4631, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4634 ./strace-static-x86_64: Process 4634 attached [pid 4634] set_robust_list(0x5555564465e0, 24) = 0 [pid 4634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4634] setpgid(0, 0) = 0 [pid 4634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4634] write(3, "1000", 4) = 4 [pid 4634] close(3) = 0 [pid 4634] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4634] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4634] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4635 attached , parent_tid=[4635], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4635 [pid 4635] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4635] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4635] <... futex resumed>) = 0 [pid 4634] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4635] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4634] <... futex resumed>) = 0 [pid 4635] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4635] <... mount resumed>) = 0 [pid 4634] <... futex resumed>) = 0 [pid 4635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4634] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4635] <... futex resumed>) = 0 [pid 4634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4635] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4634] <... futex resumed>) = 0 [pid 4634] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4635] <... mount resumed>) = 0 [pid 4635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4634] <... futex resumed>) = 0 [pid 4635] umount2("./file0", MNT_DETACH [pid 4634] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4634] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4635] <... umount2 resumed>) = 0 [pid 4634] <... mmap resumed>) = 0x7fc84e05e000 [pid 4635] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4634] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4635] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4634] <... mprotect resumed>) = 0 [pid 4634] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4636 attached , parent_tid=[4636], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4636 [pid 4636] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4636] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4634] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4636] <... futex resumed>) = 0 [pid 4636] umount2("./file0", MNT_DETACH [pid 4634] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4636] <... umount2 resumed>) = 0 [pid 4636] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4636] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4634] exit_group(0) = ? [pid 4635] <... futex resumed>) = 230 [pid 4636] <... futex resumed>) = ? [pid 4636] +++ exited with 0 +++ [pid 4635] +++ exited with 0 +++ [pid 4634] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4634, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4637 attached , child_tidptr=0x5555564465d0) = 4637 [pid 4637] set_robust_list(0x5555564465e0, 24) = 0 [pid 4637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4637] setpgid(0, 0) = 0 [pid 4637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4637] write(3, "1000", 4) = 4 [pid 4637] close(3) = 0 [pid 4637] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4637] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4637] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4638], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4638 [pid 4637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4638 attached [pid 4638] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4638] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4637] <... futex resumed>) = 0 [pid 4637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4638] <... futex resumed>) = 1 [pid 4638] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4637] <... futex resumed>) = 0 [pid 4637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4638] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4637] <... futex resumed>) = 0 [pid 4637] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4637] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4637] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4639], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4639 [pid 4637] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4639 attached [pid 4639] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4639] umount2("./file0", MNT_DETACH [pid 4638] umount2("./file0", MNT_DETACH [pid 4639] <... umount2 resumed>) = 0 [pid 4639] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4637] <... futex resumed>) = 0 [pid 4639] <... futex resumed>) = 1 [pid 4639] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4638] <... umount2 resumed>) = 0 [pid 4638] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4637] exit_group(0) = ? [pid 4638] +++ exited with 0 +++ [pid 4639] <... futex resumed>) = ? [pid 4639] +++ exited with 0 +++ [pid 4637] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4637, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4640 ./strace-static-x86_64: Process 4640 attached [pid 4640] set_robust_list(0x5555564465e0, 24) = 0 [pid 4640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4640] setpgid(0, 0) = 0 [pid 4640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4640] write(3, "1000", 4) = 4 [pid 4640] close(3) = 0 [pid 4640] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4640] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4640] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4641 attached , parent_tid=[4641], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4641 [pid 4640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4641] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4641] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4640] <... futex resumed>) = 0 [pid 4640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4641] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4640] <... futex resumed>) = 0 [pid 4640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4641] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4640] <... futex resumed>) = 0 [pid 4640] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4640] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4641] umount2("./file0", MNT_DETACH [pid 4640] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4642], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4642 [pid 4640] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4640] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4642 attached [pid 4641] <... umount2 resumed>) = 0 [pid 4642] set_robust_list(0x7fc84e07e9e0, 24 [pid 4641] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4642] <... set_robust_list resumed>) = 0 [pid 4641] <... futex resumed>) = 0 [pid 4642] umount2("./file0", MNT_DETACH [pid 4641] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4642] <... umount2 resumed>) = 0 [pid 4642] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4640] <... futex resumed>) = 0 [pid 4640] exit_group(0) = ? [pid 4641] <... futex resumed>) = ? [pid 4641] +++ exited with 0 +++ [pid 4642] +++ exited with 0 +++ [pid 4640] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4640, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4643 ./strace-static-x86_64: Process 4643 attached [pid 4643] set_robust_list(0x5555564465e0, 24) = 0 [pid 4643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4643] setpgid(0, 0) = 0 [pid 4643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4643] write(3, "1000", 4) = 4 [pid 4643] close(3) = 0 [pid 4643] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4643] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4643] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4643] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4644 attached , parent_tid=[4644], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4644 [pid 4643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4643] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4644] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4644] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4643] <... futex resumed>) = 0 [pid 4644] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4644] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4644] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4643] <... futex resumed>) = 0 [pid 4644] <... mount resumed>) = 0 [pid 4643] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4644] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4643] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4644] <... futex resumed>) = 0 [pid 4643] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4644] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4643] <... futex resumed>) = 0 [pid 4643] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4643] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4643] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4643] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4644] umount2("./file0", MNT_DETACH [pid 4643] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4645], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4645 [pid 4644] <... umount2 resumed>) = 0 [pid 4643] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4643] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4645 attached [pid 4645] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4645] umount2("./file0", MNT_DETACH) = 0 [pid 4644] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4645] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4643] <... futex resumed>) = 0 [pid 4643] exit_group(0) = ? [pid 4644] <... futex resumed>) = ? [pid 4645] <... futex resumed>) = ? [pid 4644] +++ exited with 0 +++ [pid 4645] +++ exited with 0 +++ [pid 4643] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4643, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4646 ./strace-static-x86_64: Process 4646 attached [pid 4646] set_robust_list(0x5555564465e0, 24) = 0 [pid 4646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4646] setpgid(0, 0) = 0 [pid 4646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4646] write(3, "1000", 4) = 4 [pid 4646] close(3) = 0 [pid 4646] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4646] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4646] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4647 attached , parent_tid=[4647], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4647 [pid 4647] set_robust_list(0x7fc84e09f9e0, 24 [pid 4646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4646] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4647] <... set_robust_list resumed>) = 0 [pid 4647] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4646] <... futex resumed>) = 0 [pid 4646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4647] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4646] <... futex resumed>) = 0 [pid 4646] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4647] <... mount resumed>) = 0 [pid 4647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4646] <... futex resumed>) = 0 [pid 4647] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4646] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4647] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4646] <... futex resumed>) = 0 [pid 4646] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4646] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4646] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4647] umount2("./file0", MNT_DETACH [pid 4646] <... mprotect resumed>) = 0 [pid 4646] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4647] <... umount2 resumed>) = 0 [pid 4646] <... clone resumed>, parent_tid=[4648], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4648 [pid 4646] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4646] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4648 attached [pid 4648] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4648] umount2("./file0", MNT_DETACH [pid 4647] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4648] <... umount2 resumed>) = 0 [pid 4647] <... futex resumed>) = 0 [pid 4648] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4647] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4646] <... futex resumed>) = 0 [pid 4648] <... futex resumed>) = 1 [pid 4646] exit_group(0 [pid 4648] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 4646] <... exit_group resumed>) = ? [pid 4648] +++ exited with 0 +++ [pid 4647] <... futex resumed>) = ? [pid 4647] +++ exited with 0 +++ [pid 4646] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4646, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4649 ./strace-static-x86_64: Process 4649 attached [pid 4649] set_robust_list(0x5555564465e0, 24) = 0 [pid 4649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4649] setpgid(0, 0) = 0 [pid 4649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4649] write(3, "1000", 4) = 4 [pid 4649] close(3) = 0 [pid 4649] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4649] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4649] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4649] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4650 attached , parent_tid=[4650], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4650 [pid 4649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4649] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4650] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4650] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4650] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4649] <... futex resumed>) = 0 [pid 4649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4650] <... futex resumed>) = 0 [pid 4650] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4649] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4650] <... mount resumed>) = 0 [pid 4650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4649] <... futex resumed>) = 0 [pid 4650] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4650] <... futex resumed>) = 0 [pid 4650] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4649] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4650] <... mount resumed>) = 0 [pid 4650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4650] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4649] <... futex resumed>) = 0 [pid 4649] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4650] <... futex resumed>) = 0 [pid 4650] umount2("./file0", MNT_DETACH [pid 4649] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4649] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4650] <... umount2 resumed>) = 0 [pid 4650] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4650] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4649] <... mmap resumed>) = 0x7fc84e05e000 [pid 4649] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4649] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4651 attached [pid 4651] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4651] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4649] <... clone resumed>, parent_tid=[4651], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4651 [pid 4649] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4649] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4651] <... futex resumed>) = 0 [pid 4651] umount2("./file0", MNT_DETACH) = 0 [pid 4651] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4649] <... futex resumed>) = 0 [pid 4649] exit_group(0 [pid 4650] <... futex resumed>) = ? [pid 4650] +++ exited with 0 +++ [pid 4649] <... exit_group resumed>) = ? [pid 4651] +++ exited with 0 +++ [pid 4649] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4649, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4652 ./strace-static-x86_64: Process 4652 attached [pid 4652] set_robust_list(0x5555564465e0, 24) = 0 [pid 4652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4652] setpgid(0, 0) = 0 [pid 4652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4652] write(3, "1000", 4) = 4 [pid 4652] close(3) = 0 [pid 4652] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4652] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4652] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4653 attached , parent_tid=[4653], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4653 [pid 4652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4652] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4653] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4653] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4653] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4652] <... futex resumed>) = 0 [pid 4652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4653] <... futex resumed>) = 0 [pid 4652] <... futex resumed>) = 1 [pid 4653] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4652] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4653] <... mount resumed>) = 0 [pid 4653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4652] <... futex resumed>) = 0 [pid 4653] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4652] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4653] <... mount resumed>) = 0 [pid 4653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4652] <... futex resumed>) = 0 [pid 4653] umount2("./file0", MNT_DETACH [pid 4652] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4652] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4653] <... umount2 resumed>) = 0 [pid 4653] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4652] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4653] <... futex resumed>) = 0 [pid 4652] <... mprotect resumed>) = 0 [pid 4653] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4652] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4654 attached , parent_tid=[4654], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4654 [pid 4654] set_robust_list(0x7fc84e07e9e0, 24 [pid 4652] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4652] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4654] <... set_robust_list resumed>) = 0 [pid 4654] umount2("./file0", MNT_DETACH) = 0 [pid 4654] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4652] <... futex resumed>) = 0 [pid 4652] exit_group(0) = ? [pid 4653] <... futex resumed>) = ? [pid 4653] +++ exited with 0 +++ [pid 4654] +++ exited with 0 +++ [pid 4652] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4652, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4655 ./strace-static-x86_64: Process 4655 attached [pid 4655] set_robust_list(0x5555564465e0, 24) = 0 [pid 4655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4655] setpgid(0, 0) = 0 [pid 4655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4655] write(3, "1000", 4) = 4 [pid 4655] close(3) = 0 [pid 4655] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4655] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4655] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4656 attached [pid 4656] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4655] <... clone resumed>, parent_tid=[4656], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4656 [pid 4655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4656] <... futex resumed>) = 0 [pid 4655] <... futex resumed>) = 1 [pid 4656] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4655] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4655] <... futex resumed>) = 0 [pid 4656] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4655] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4656] <... mount resumed>) = 0 [pid 4656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4655] <... futex resumed>) = 0 [pid 4656] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4655] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4656] <... mount resumed>) = 0 [pid 4656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4655] <... futex resumed>) = 0 [pid 4656] umount2("./file0", MNT_DETACH [pid 4655] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4655] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4656] <... umount2 resumed>) = 0 [pid 4656] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4655] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4656] <... futex resumed>) = 0 [pid 4655] <... mprotect resumed>) = 0 [pid 4656] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4655] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4657 attached , parent_tid=[4657], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4657 [pid 4657] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4657] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4655] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4657] <... futex resumed>) = 0 [pid 4657] umount2("./file0", MNT_DETACH) = 0 [pid 4657] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4657] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4655] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4655] exit_group(0) = ? [pid 4656] <... futex resumed>) = ? [pid 4657] <... futex resumed>) = ? [pid 4657] +++ exited with 0 +++ [pid 4656] +++ exited with 0 +++ [pid 4655] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4655, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4658 attached , child_tidptr=0x5555564465d0) = 4658 [pid 4658] set_robust_list(0x5555564465e0, 24) = 0 [pid 4658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4658] setpgid(0, 0) = 0 [pid 4658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4658] write(3, "1000", 4) = 4 [pid 4658] close(3) = 0 [pid 4658] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4658] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4658] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4659], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4659 [pid 4658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4658] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4659 attached [pid 4659] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4659] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4658] <... futex resumed>) = 0 [pid 4658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4658] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4659] <... futex resumed>) = 1 [pid 4659] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4658] <... futex resumed>) = 0 [pid 4658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4658] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4659] <... futex resumed>) = 1 [pid 4659] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4658] <... futex resumed>) = 0 [pid 4658] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4659] umount2("./file0", MNT_DETACH [pid 4658] <... futex resumed>) = 0 [pid 4658] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4658] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4658] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4660 attached , parent_tid=[4660], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4660 [pid 4659] <... umount2 resumed>) = 0 [pid 4658] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4660] set_robust_list(0x7fc84e07e9e0, 24 [pid 4659] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4658] <... futex resumed>) = 0 [pid 4660] <... set_robust_list resumed>) = 0 [pid 4660] umount2("./file0", MNT_DETACH [pid 4659] <... futex resumed>) = 0 [pid 4658] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4659] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4660] <... umount2 resumed>) = 0 [pid 4660] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4658] <... futex resumed>) = 0 [pid 4660] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4658] exit_group(0 [pid 4660] <... futex resumed>) = ? [pid 4659] <... futex resumed>) = ? [pid 4658] <... exit_group resumed>) = ? [pid 4660] +++ exited with 0 +++ [pid 4659] +++ exited with 0 +++ [pid 4658] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4658, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4661 ./strace-static-x86_64: Process 4661 attached [pid 4661] set_robust_list(0x5555564465e0, 24) = 0 [pid 4661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4661] setpgid(0, 0) = 0 [pid 4661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4661] write(3, "1000", 4) = 4 [pid 4661] close(3) = 0 [pid 4661] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4661] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4661] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4662], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4662 [pid 4661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4662 attached [pid 4662] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4662] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4661] <... futex resumed>) = 0 [pid 4661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4662] <... futex resumed>) = 1 [pid 4662] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4661] <... futex resumed>) = 0 [pid 4662] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4662] <... mount resumed>) = 0 [pid 4662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4661] <... futex resumed>) = 0 [pid 4661] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4662] umount2("./file0", MNT_DETACH [pid 4661] <... mmap resumed>) = 0x7fc84e05e000 [pid 4661] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4661] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4662] <... umount2 resumed>) = 0 [pid 4661] <... clone resumed>, parent_tid=[4663], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4663 [pid 4661] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4661] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4663 attached [pid 4663] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4663] umount2("./file0", MNT_DETACH [pid 4662] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4662] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4663] <... umount2 resumed>) = 0 [pid 4663] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4661] <... futex resumed>) = 0 [pid 4663] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4661] exit_group(0 [pid 4663] <... futex resumed>) = ? [pid 4661] <... exit_group resumed>) = ? [pid 4662] <... futex resumed>) = ? [pid 4662] +++ exited with 0 +++ [pid 4663] +++ exited with 0 +++ [pid 4661] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4661, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4664 ./strace-static-x86_64: Process 4664 attached [pid 4664] set_robust_list(0x5555564465e0, 24) = 0 [pid 4664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4664] setpgid(0, 0) = 0 [pid 4664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4664] write(3, "1000", 4) = 4 [pid 4664] close(3) = 0 [pid 4664] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4664] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4664] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4665], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4665 [pid 4664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4665 attached [pid 4665] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4665] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4664] <... futex resumed>) = 0 [pid 4664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4665] <... futex resumed>) = 1 [pid 4665] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4664] <... futex resumed>) = 0 [pid 4665] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4665] <... mount resumed>) = 0 [pid 4665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4664] <... futex resumed>) = 0 [pid 4664] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4664] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4664] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4665] umount2("./file0", MNT_DETACH [pid 4664] <... clone resumed>, parent_tid=[4666], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4666 [pid 4664] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4664] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4666 attached [pid 4666] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4666] umount2("./file0", MNT_DETACH) = 0 [pid 4666] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4664] <... futex resumed>) = 0 [pid 4666] <... futex resumed>) = 1 [pid 4665] <... umount2 resumed>) = 0 [pid 4666] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4665] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4665] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4664] exit_group(0) = ? [pid 4666] <... futex resumed>) = ? [pid 4665] <... futex resumed>) = ? [pid 4666] +++ exited with 0 +++ [pid 4665] +++ exited with 0 +++ [pid 4664] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4664, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4667 ./strace-static-x86_64: Process 4667 attached [pid 4667] set_robust_list(0x5555564465e0, 24) = 0 [pid 4667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4667] setpgid(0, 0) = 0 [pid 4667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4667] write(3, "1000", 4) = 4 [pid 4667] close(3) = 0 [pid 4667] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4667] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4667] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4667] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4668], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4668 [pid 4667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4667] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4668 attached [pid 4668] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4668] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4667] <... futex resumed>) = 0 [pid 4667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4668] <... futex resumed>) = 1 [pid 4667] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4668] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4667] <... futex resumed>) = 0 [pid 4668] <... futex resumed>) = 1 [pid 4667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4668] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4667] <... futex resumed>) = 0 [pid 4667] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4668] <... mount resumed>) = 0 [pid 4668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4667] <... futex resumed>) = 0 [pid 4668] <... futex resumed>) = 1 [pid 4667] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4668] umount2("./file0", MNT_DETACH [pid 4667] <... futex resumed>) = 0 [pid 4667] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4667] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4667] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4668] <... umount2 resumed>) = 0 [pid 4667] <... mprotect resumed>) = 0 [pid 4668] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4667] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4668] <... futex resumed>) = 0 [pid 4668] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4669 attached [pid 4667] <... clone resumed>, parent_tid=[4669], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4669 [pid 4669] set_robust_list(0x7fc84e07e9e0, 24 [pid 4667] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4669] <... set_robust_list resumed>) = 0 [pid 4667] <... futex resumed>) = 0 [pid 4669] umount2("./file0", MNT_DETACH [pid 4667] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4669] <... umount2 resumed>) = 0 [pid 4669] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4667] <... futex resumed>) = 0 [pid 4669] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4667] exit_group(0 [pid 4668] <... futex resumed>) = ? [pid 4668] +++ exited with 0 +++ [pid 4667] <... exit_group resumed>) = ? [pid 4669] <... futex resumed>) = ? [pid 4669] +++ exited with 0 +++ [pid 4667] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4667, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4670 ./strace-static-x86_64: Process 4670 attached [pid 4670] set_robust_list(0x5555564465e0, 24) = 0 [pid 4670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4670] setpgid(0, 0) = 0 [pid 4670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4670] write(3, "1000", 4) = 4 [pid 4670] close(3) = 0 [pid 4670] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4670] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4670] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4671], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4671 [pid 4670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4670] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4671 attached [pid 4671] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4671] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4670] <... futex resumed>) = 0 [pid 4670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4670] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4671] <... futex resumed>) = 1 [pid 4671] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4670] <... futex resumed>) = 0 [pid 4671] <... futex resumed>) = 1 [pid 4670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4671] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4670] <... futex resumed>) = 0 [pid 4670] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4671] <... mount resumed>) = 0 [pid 4671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4670] <... futex resumed>) = 0 [pid 4670] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4670] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4671] umount2("./file0", MNT_DETACH [pid 4670] <... futex resumed>) = 0 [pid 4670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4670] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4670] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4671] <... umount2 resumed>) = 0 [pid 4670] <... clone resumed>, parent_tid=[4672], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4672 [pid 4671] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4670] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4670] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4672 attached [pid 4671] <... futex resumed>) = 0 [pid 4672] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4671] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4672] umount2("./file0", MNT_DETACH) = 0 [pid 4672] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4670] <... futex resumed>) = 0 [pid 4670] exit_group(0) = ? [pid 4671] <... futex resumed>) = ? [pid 4672] <... futex resumed>) = ? [pid 4671] +++ exited with 0 +++ [pid 4672] +++ exited with 0 +++ [pid 4670] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4670, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4673 ./strace-static-x86_64: Process 4673 attached [pid 4673] set_robust_list(0x5555564465e0, 24) = 0 [pid 4673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4673] setpgid(0, 0) = 0 [pid 4673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4673] write(3, "1000", 4) = 4 [pid 4673] close(3) = 0 [pid 4673] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4673] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4673] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4674], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4674 [pid 4673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4674 attached [pid 4674] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4674] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4673] <... futex resumed>) = 0 [pid 4673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4674] <... futex resumed>) = 1 [pid 4674] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4673] <... futex resumed>) = 0 [pid 4673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4674] <... futex resumed>) = 1 [pid 4674] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4673] <... futex resumed>) = 0 [pid 4673] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4673] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4673] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4675], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4675 ./strace-static-x86_64: Process 4675 attached [pid 4673] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4673] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4674] <... futex resumed>) = 1 [pid 4674] umount2("./file0", MNT_DETACH [pid 4675] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4674] <... umount2 resumed>) = 0 [pid 4674] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4675] umount2("./file0", MNT_DETACH) = 0 [pid 4674] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4675] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4673] <... futex resumed>) = 0 [pid 4675] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4673] exit_group(0) = ? [pid 4675] <... futex resumed>) = ? [pid 4675] +++ exited with 0 +++ [pid 4674] <... futex resumed>) = ? [pid 4674] +++ exited with 0 +++ [pid 4673] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4673, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4676 ./strace-static-x86_64: Process 4676 attached [pid 4676] set_robust_list(0x5555564465e0, 24) = 0 [pid 4676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4676] setpgid(0, 0) = 0 [pid 4676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4676] write(3, "1000", 4) = 4 [pid 4676] close(3) = 0 [pid 4676] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4676] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4676] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4677 attached , parent_tid=[4677], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4677 [pid 4676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4677] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4677] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4676] <... futex resumed>) = 0 [pid 4676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4677] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4676] <... futex resumed>) = 0 [pid 4676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4677] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4676] <... futex resumed>) = 0 [pid 4676] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4676] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4676] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4677] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4678 attached ) = 0 [pid 4676] <... clone resumed>, parent_tid=[4678], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4678 [pid 4676] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4676] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4678] set_robust_list(0x7fc84e07e9e0, 24 [pid 4677] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4678] <... set_robust_list resumed>) = 0 [pid 4677] <... futex resumed>) = 0 [pid 4678] umount2("./file0", MNT_DETACH [pid 4677] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4678] <... umount2 resumed>) = 0 [pid 4678] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4676] <... futex resumed>) = 0 [pid 4676] exit_group(0) = ? [pid 4677] <... futex resumed>) = ? [pid 4677] +++ exited with 0 +++ [pid 4678] +++ exited with 0 +++ [pid 4676] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4676, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4679 attached , child_tidptr=0x5555564465d0) = 4679 [pid 4679] set_robust_list(0x5555564465e0, 24) = 0 [pid 4679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4679] setpgid(0, 0) = 0 [pid 4679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4679] write(3, "1000", 4) = 4 [pid 4679] close(3) = 0 [pid 4679] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4679] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4679] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4679] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4680 attached , parent_tid=[4680], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4680 [pid 4680] set_robust_list(0x7fc84e09f9e0, 24 [pid 4679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4680] <... set_robust_list resumed>) = 0 [pid 4679] <... futex resumed>) = 0 [pid 4679] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4680] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4679] <... futex resumed>) = 0 [pid 4679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4679] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4680] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4679] <... futex resumed>) = 0 [pid 4679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4679] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4680] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4679] <... futex resumed>) = 0 [pid 4679] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4679] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4679] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4679] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4679] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4681 attached [pid 4680] umount2("./file0", MNT_DETACH [pid 4679] <... clone resumed>, parent_tid=[4681], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4681 [pid 4679] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4679] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4681] set_robust_list(0x7fc84e07e9e0, 24 [pid 4680] <... umount2 resumed>) = 0 [pid 4681] <... set_robust_list resumed>) = 0 [pid 4680] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4681] umount2("./file0", MNT_DETACH [pid 4680] <... futex resumed>) = 0 [pid 4680] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4681] <... umount2 resumed>) = 0 [pid 4681] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4679] <... futex resumed>) = 0 [pid 4679] exit_group(0) = ? [pid 4680] <... futex resumed>) = ? [pid 4680] +++ exited with 0 +++ [pid 4681] +++ exited with 0 +++ [pid 4679] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4679, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4682 ./strace-static-x86_64: Process 4682 attached [pid 4682] set_robust_list(0x5555564465e0, 24) = 0 [pid 4682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4682] setpgid(0, 0) = 0 [pid 4682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4682] write(3, "1000", 4) = 4 [pid 4682] close(3) = 0 [pid 4682] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4682] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4682] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4683 attached [pid 4683] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] <... clone resumed>, parent_tid=[4683], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4683 [pid 4682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4683] <... futex resumed>) = 0 [pid 4683] mkdir("./file0", 000 [pid 4682] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4683] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4683] <... futex resumed>) = 0 [pid 4683] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4682] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4683] <... mount resumed>) = 0 [pid 4683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] <... futex resumed>) = 0 [pid 4682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4683] <... futex resumed>) = 0 [pid 4683] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4682] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4683] <... mount resumed>) = 0 [pid 4683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] <... futex resumed>) = 0 [pid 4682] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4683] <... futex resumed>) = 0 [pid 4683] umount2("./file0", MNT_DETACH [pid 4682] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4683] <... umount2 resumed>) = 0 [pid 4683] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4683] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4682] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4682] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4684 attached , parent_tid=[4684], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4684 [pid 4684] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4684] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4684] <... futex resumed>) = 0 [pid 4684] umount2("./file0", MNT_DETACH [pid 4682] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4684] <... umount2 resumed>) = 0 [pid 4684] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4682] <... futex resumed>) = 0 [pid 4684] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4682] exit_group(0 [pid 4683] <... futex resumed>) = ? [pid 4683] +++ exited with 0 +++ [pid 4684] <... futex resumed>) = ? [pid 4684] +++ exited with 0 +++ [pid 4682] <... exit_group resumed>) = ? [pid 4682] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4682, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4685 attached , child_tidptr=0x5555564465d0) = 4685 [pid 4685] set_robust_list(0x5555564465e0, 24) = 0 [pid 4685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4685] setpgid(0, 0) = 0 [pid 4685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4685] write(3, "1000", 4) = 4 [pid 4685] close(3) = 0 [pid 4685] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4685] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4685] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4686 attached , parent_tid=[4686], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4686 [pid 4686] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4686] <... futex resumed>) = 0 [pid 4686] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4685] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4686] <... futex resumed>) = 0 [pid 4686] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4685] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4686] <... mount resumed>) = 0 [pid 4686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4685] <... futex resumed>) = 0 [pid 4685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4685] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4686] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4685] <... futex resumed>) = 0 [pid 4685] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4685] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4686] umount2("./file0", MNT_DETACH [pid 4685] <... futex resumed>) = 0 [pid 4685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4685] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4685] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4687], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4687 [pid 4685] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4685] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4687 attached [pid 4687] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4687] umount2("./file0", MNT_DETACH [pid 4686] <... umount2 resumed>) = 0 [pid 4687] <... umount2 resumed>) = 0 [pid 4687] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4685] <... futex resumed>) = 0 [pid 4687] <... futex resumed>) = 1 [pid 4687] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4686] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4686] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4685] exit_group(0) = ? [pid 4686] <... futex resumed>) = ? [pid 4687] <... futex resumed>) = ? [pid 4687] +++ exited with 0 +++ [pid 4686] +++ exited with 0 +++ [pid 4685] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4685, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4688 ./strace-static-x86_64: Process 4688 attached [pid 4688] set_robust_list(0x5555564465e0, 24) = 0 [pid 4688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4688] setpgid(0, 0) = 0 [pid 4688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4688] write(3, "1000", 4) = 4 [pid 4688] close(3) = 0 [pid 4688] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4688] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4688] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4689 attached , parent_tid=[4689], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4689 [pid 4689] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4689] <... futex resumed>) = 0 [pid 4689] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4688] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4689] <... futex resumed>) = 0 [pid 4688] <... futex resumed>) = 1 [pid 4689] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4688] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4689] <... mount resumed>) = 0 [pid 4689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4688] <... futex resumed>) = 0 [pid 4688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4689] <... futex resumed>) = 0 [pid 4689] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4688] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4689] <... mount resumed>) = 0 [pid 4689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4688] <... futex resumed>) = 0 [pid 4688] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4688] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4688] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4689] umount2("./file0", MNT_DETACH [pid 4688] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4690], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4690 [pid 4688] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4689] <... umount2 resumed>) = 0 [pid 4688] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4690 attached [pid 4690] set_robust_list(0x7fc84e07e9e0, 24 [pid 4689] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4690] <... set_robust_list resumed>) = 0 [pid 4689] <... futex resumed>) = 0 [pid 4690] umount2("./file0", MNT_DETACH [pid 4689] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4690] <... umount2 resumed>) = 0 [pid 4690] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4688] <... futex resumed>) = 0 [pid 4688] exit_group(0) = ? [pid 4689] <... futex resumed>) = ? [pid 4690] <... futex resumed>) = ? [pid 4689] +++ exited with 0 +++ [pid 4690] +++ exited with 0 +++ [pid 4688] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4688, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4691 ./strace-static-x86_64: Process 4691 attached [pid 4691] set_robust_list(0x5555564465e0, 24) = 0 [pid 4691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4691] setpgid(0, 0) = 0 [pid 4691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4691] write(3, "1000", 4) = 4 [pid 4691] close(3) = 0 [pid 4691] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4691] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4691] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4692], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4692 [pid 4691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4692 attached [pid 4692] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4692] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4691] <... futex resumed>) = 0 [pid 4691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4692] <... futex resumed>) = 1 [pid 4692] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4691] <... futex resumed>) = 0 [pid 4691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4692] <... futex resumed>) = 1 [pid 4692] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4691] <... futex resumed>) = 0 [pid 4691] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4691] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4691] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4693], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4693 [pid 4691] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4691] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4692] <... futex resumed>) = 1 [pid 4692] umount2("./file0", MNT_DETACH) = 0 ./strace-static-x86_64: Process 4693 attached [pid 4692] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4693] set_robust_list(0x7fc84e07e9e0, 24 [pid 4692] <... futex resumed>) = 0 [pid 4693] <... set_robust_list resumed>) = 0 [pid 4692] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4693] umount2("./file0", MNT_DETACH) = 0 [pid 4693] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4691] <... futex resumed>) = 0 [pid 4693] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4691] exit_group(0 [pid 4692] <... futex resumed>) = 231 [pid 4691] <... exit_group resumed>) = ? [pid 4693] <... futex resumed>) = ? [pid 4693] +++ exited with 0 +++ [pid 4692] +++ exited with 0 +++ [pid 4691] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4691, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4694 ./strace-static-x86_64: Process 4694 attached [pid 4694] set_robust_list(0x5555564465e0, 24) = 0 [pid 4694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4694] setpgid(0, 0) = 0 [pid 4694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4694] write(3, "1000", 4) = 4 [pid 4694] close(3) = 0 [pid 4694] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4694] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4694] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4695], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4695 [pid 4694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4695 attached [pid 4695] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4695] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4694] <... futex resumed>) = 0 [pid 4694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4695] <... futex resumed>) = 1 [pid 4695] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4694] <... futex resumed>) = 0 [pid 4694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4695] <... futex resumed>) = 1 [pid 4695] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4694] <... futex resumed>) = 0 [pid 4694] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4694] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4694] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4696], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4696 [pid 4694] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4694] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4695] <... futex resumed>) = 1 [pid 4695] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4696 attached [pid 4696] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4696] umount2("./file0", MNT_DETACH [pid 4695] <... umount2 resumed>) = 0 [pid 4695] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4695] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4696] <... umount2 resumed>) = 0 [pid 4696] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4694] <... futex resumed>) = 0 [pid 4694] exit_group(0) = ? [pid 4695] <... futex resumed>) = ? [pid 4696] <... futex resumed>) = ? [pid 4695] +++ exited with 0 +++ [pid 4696] +++ exited with 0 +++ [pid 4694] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4694, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4697 ./strace-static-x86_64: Process 4697 attached [pid 4697] set_robust_list(0x5555564465e0, 24) = 0 [pid 4697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4697] setpgid(0, 0) = 0 [pid 4697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4697] write(3, "1000", 4) = 4 [pid 4697] close(3) = 0 [pid 4697] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4697] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4697] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4698], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4698 [pid 4697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4698 attached [pid 4698] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4698] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4697] <... futex resumed>) = 0 [pid 4697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4698] <... futex resumed>) = 1 [pid 4698] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4697] <... futex resumed>) = 0 [pid 4697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4698] <... futex resumed>) = 1 [pid 4698] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4697] <... futex resumed>) = 0 [pid 4697] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4697] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4697] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4699], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4699 [pid 4697] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4697] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4698] <... futex resumed>) = 1 [pid 4698] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4699 attached [pid 4699] set_robust_list(0x7fc84e07e9e0, 24 [pid 4698] <... umount2 resumed>) = 0 [pid 4699] <... set_robust_list resumed>) = 0 [pid 4698] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4699] umount2("./file0", MNT_DETACH [pid 4698] <... futex resumed>) = 0 [pid 4699] <... umount2 resumed>) = 0 [pid 4699] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4697] <... futex resumed>) = 0 [pid 4697] exit_group(0) = ? [pid 4699] <... futex resumed>) = ? [pid 4699] +++ exited with 0 +++ [pid 4698] +++ exited with 0 +++ [pid 4697] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4697, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4700 ./strace-static-x86_64: Process 4700 attached [pid 4700] set_robust_list(0x5555564465e0, 24) = 0 [pid 4700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4700] setpgid(0, 0) = 0 [pid 4700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4700] write(3, "1000", 4) = 4 [pid 4700] close(3) = 0 [pid 4700] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4700] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4700] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4701 attached , parent_tid=[4701], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4701 [pid 4701] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4701] <... futex resumed>) = 0 [pid 4701] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4700] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4701] <... futex resumed>) = 0 [pid 4701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4701] <... futex resumed>) = 0 [pid 4700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4701] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4700] <... futex resumed>) = 0 [pid 4700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4701] <... futex resumed>) = 0 [pid 4701] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4700] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4701] <... mount resumed>) = 0 [pid 4701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4700] <... futex resumed>) = 0 [pid 4700] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4701] <... futex resumed>) = 0 [pid 4701] umount2("./file0", MNT_DETACH [pid 4700] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4701] <... umount2 resumed>) = 0 [pid 4701] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4701] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4700] <... mmap resumed>) = 0x7fc84e05e000 [pid 4700] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4700] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4702], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4702 [pid 4700] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4702 attached ) = 0 [pid 4700] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4702] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4702] umount2("./file0", MNT_DETACH) = 0 [pid 4702] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4700] <... futex resumed>) = 0 [pid 4700] exit_group(0) = ? [pid 4701] <... futex resumed>) = ? [pid 4701] +++ exited with 0 +++ [pid 4702] +++ exited with 0 +++ [pid 4700] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4700, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4703 ./strace-static-x86_64: Process 4703 attached [pid 4703] set_robust_list(0x5555564465e0, 24) = 0 [pid 4703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4703] setpgid(0, 0) = 0 [pid 4703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4703] write(3, "1000", 4) = 4 [pid 4703] close(3) = 0 [pid 4703] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4703] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4703] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4704 attached , parent_tid=[4704], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4704 [pid 4704] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4704] <... futex resumed>) = 0 [pid 4704] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4704] <... futex resumed>) = 0 [pid 4704] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4704] <... mount resumed>) = 0 [pid 4704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4703] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4704] <... futex resumed>) = 0 [pid 4704] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4703] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4704] <... mount resumed>) = 0 [pid 4704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4703] <... futex resumed>) = 0 [pid 4703] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4703] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4704] umount2("./file0", MNT_DETACH [pid 4703] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4703] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4704] <... umount2 resumed>) = 0 [pid 4703] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4704] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4703] <... clone resumed>, parent_tid=[4705], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4705 [pid 4703] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4703] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4704] <... futex resumed>) = 0 [pid 4704] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4705 attached [pid 4705] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4705] umount2("./file0", MNT_DETACH) = 0 [pid 4705] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4703] <... futex resumed>) = 0 [pid 4705] <... futex resumed>) = 1 [pid 4703] exit_group(0 [pid 4705] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 4703] <... exit_group resumed>) = ? [pid 4704] <... futex resumed>) = ? [pid 4704] +++ exited with 0 +++ [pid 4705] +++ exited with 0 +++ [pid 4703] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4703, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4706 ./strace-static-x86_64: Process 4706 attached [pid 4706] set_robust_list(0x5555564465e0, 24) = 0 [pid 4706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4706] setpgid(0, 0) = 0 [pid 4706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4706] write(3, "1000", 4) = 4 [pid 4706] close(3) = 0 [pid 4706] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4706] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4706] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4707], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4707 [pid 4706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4707 attached [pid 4707] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4707] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4706] <... futex resumed>) = 0 [pid 4706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4707] <... futex resumed>) = 1 [pid 4707] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4706] <... futex resumed>) = 0 [pid 4706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4707] <... futex resumed>) = 1 [pid 4707] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4706] <... futex resumed>) = 0 [pid 4706] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4706] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4706] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4708], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4708 [pid 4706] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4706] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4707] <... futex resumed>) = 1 [pid 4707] umount2("./file0", MNT_DETACH) = 0 ./strace-static-x86_64: Process 4708 attached [pid 4707] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4708] set_robust_list(0x7fc84e07e9e0, 24 [pid 4707] <... futex resumed>) = 0 [pid 4708] <... set_robust_list resumed>) = 0 [pid 4707] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4708] umount2("./file0", MNT_DETACH) = 0 [pid 4708] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4706] <... futex resumed>) = 0 [pid 4708] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4706] exit_group(0) = ? [pid 4707] <... futex resumed>) = ? [pid 4708] <... futex resumed>) = 231 [pid 4707] +++ exited with 0 +++ [pid 4708] +++ exited with 0 +++ [pid 4706] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4709 ./strace-static-x86_64: Process 4709 attached [pid 4709] set_robust_list(0x5555564465e0, 24) = 0 [pid 4709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4709] setpgid(0, 0) = 0 [pid 4709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4709] write(3, "1000", 4) = 4 [pid 4709] close(3) = 0 [pid 4709] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4709] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4709] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4710 attached [pid 4710] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4709] <... clone resumed>, parent_tid=[4710], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4710 [pid 4709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4710] <... futex resumed>) = 0 [pid 4710] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4710] <... futex resumed>) = 0 [pid 4710] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4710] <... futex resumed>) = 0 [pid 4710] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4709] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4710] <... mount resumed>) = 0 [pid 4710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4709] <... futex resumed>) = 0 [pid 4709] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4710] <... futex resumed>) = 0 [pid 4709] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4710] umount2("./file0", MNT_DETACH [pid 4709] <... futex resumed>) = 0 [pid 4709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4710] <... umount2 resumed>) = 0 [pid 4709] <... mmap resumed>) = 0x7fc84e05e000 [pid 4710] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4709] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4710] <... futex resumed>) = 0 [pid 4709] <... mprotect resumed>) = 0 [pid 4710] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4709] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4711 attached , parent_tid=[4711], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4711 [pid 4711] set_robust_list(0x7fc84e07e9e0, 24 [pid 4709] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4711] <... set_robust_list resumed>) = 0 [pid 4709] <... futex resumed>) = 0 [pid 4711] umount2("./file0", MNT_DETACH [pid 4709] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4711] <... umount2 resumed>) = 0 [pid 4711] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4709] <... futex resumed>) = 0 [pid 4711] <... futex resumed>) = 1 [pid 4709] exit_group(0 [pid 4711] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4709] <... exit_group resumed>) = ? [pid 4710] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4711] <... futex resumed>) = ? [pid 4710] +++ exited with 0 +++ [pid 4711] +++ exited with 0 +++ [pid 4709] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4709, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4712 ./strace-static-x86_64: Process 4712 attached [pid 4712] set_robust_list(0x5555564465e0, 24) = 0 [pid 4712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4712] setpgid(0, 0) = 0 [pid 4712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4712] write(3, "1000", 4) = 4 [pid 4712] close(3) = 0 [pid 4712] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4712] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4712] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4713], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4713 ./strace-static-x86_64: Process 4713 attached [pid 4712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4713] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4713] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4712] <... futex resumed>) = 0 [pid 4713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4713] <... futex resumed>) = 0 [pid 4713] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4712] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4713] <... futex resumed>) = 0 [pid 4713] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4712] <... futex resumed>) = 0 [pid 4713] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4713] <... mount resumed>) = 0 [pid 4712] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4712] <... futex resumed>) = 0 [pid 4712] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4713] umount2("./file0", MNT_DETACH [pid 4712] <... futex resumed>) = 0 [pid 4712] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4713] <... umount2 resumed>) = 0 [pid 4712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4713] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4712] <... mmap resumed>) = 0x7fc84e05e000 [pid 4713] <... futex resumed>) = 0 [pid 4712] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4713] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4712] <... mprotect resumed>) = 0 [pid 4712] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4714 attached , parent_tid=[4714], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4714 [pid 4714] set_robust_list(0x7fc84e07e9e0, 24 [pid 4712] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4714] <... set_robust_list resumed>) = 0 [pid 4712] <... futex resumed>) = 0 [pid 4714] umount2("./file0", MNT_DETACH [pid 4712] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4714] <... umount2 resumed>) = 0 [pid 4714] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4714] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4712] <... futex resumed>) = 0 [pid 4712] exit_group(0) = ? [pid 4713] <... futex resumed>) = ? [pid 4714] <... futex resumed>) = ? [pid 4714] +++ exited with 0 +++ [pid 4713] +++ exited with 0 +++ [pid 4712] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4712, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4716 ./strace-static-x86_64: Process 4716 attached [pid 4716] set_robust_list(0x5555564465e0, 24) = 0 [pid 4716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4716] setpgid(0, 0) = 0 [pid 4716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4716] write(3, "1000", 4) = 4 [pid 4716] close(3) = 0 [pid 4716] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4716] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4716] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4717], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4717 ./strace-static-x86_64: Process 4717 attached [pid 4717] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4717] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4716] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4717] <... futex resumed>) = 0 [pid 4717] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4717] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4716] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4716] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4717] <... futex resumed>) = 0 [pid 4717] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4716] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4717] <... mount resumed>) = 0 [pid 4717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4716] <... futex resumed>) = 0 [pid 4716] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4716] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4717] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4716] <... futex resumed>) = 0 [pid 4716] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4717] umount2("./file0", MNT_DETACH [pid 4716] <... futex resumed>) = 0 [pid 4716] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4716] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4716] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4718], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4718 [pid 4716] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4716] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4717] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4718 attached [pid 4718] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4717] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4718] umount2("./file0", MNT_DETACH [pid 4717] <... futex resumed>) = 0 [pid 4718] <... umount2 resumed>) = 0 [pid 4718] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4716] <... futex resumed>) = 0 [pid 4716] exit_group(0) = ? [pid 4718] <... futex resumed>) = ? [pid 4718] +++ exited with 0 +++ [pid 4717] +++ exited with 0 +++ [pid 4716] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4716, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4719 ./strace-static-x86_64: Process 4719 attached [pid 4719] set_robust_list(0x5555564465e0, 24) = 0 [pid 4719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4719] setpgid(0, 0) = 0 [pid 4719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4719] write(3, "1000", 4) = 4 [pid 4719] close(3) = 0 [pid 4719] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4719] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4719] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4719] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4720], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4720 ./strace-static-x86_64: Process 4720 attached [pid 4720] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4720] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4719] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4720] <... futex resumed>) = 0 [pid 4720] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4719] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4720] <... futex resumed>) = 0 [pid 4719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4720] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4719] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4720] <... futex resumed>) = 0 [pid 4720] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4719] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4720] <... mount resumed>) = 0 [pid 4720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4720] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4719] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4720] <... futex resumed>) = 0 [pid 4720] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4719] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4720] <... mount resumed>) = 0 [pid 4720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4719] <... futex resumed>) = 0 [pid 4719] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4719] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4719] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4720] umount2("./file0", MNT_DETACH [pid 4719] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4719] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4720] <... umount2 resumed>) = 0 [pid 4719] <... clone resumed>, parent_tid=[4721], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4721 [pid 4720] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4719] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4719] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4721 attached [pid 4721] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4721] umount2("./file0", MNT_DETACH [pid 4720] <... futex resumed>) = 0 [pid 4720] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4721] <... umount2 resumed>) = 0 [pid 4721] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4719] <... futex resumed>) = 0 [pid 4719] exit_group(0) = ? [pid 4721] <... futex resumed>) = ? [pid 4720] <... futex resumed>) = ? [pid 4720] +++ exited with 0 +++ [pid 4721] +++ exited with 0 +++ [pid 4719] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4719, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4722 attached , child_tidptr=0x5555564465d0) = 4722 [pid 4722] set_robust_list(0x5555564465e0, 24) = 0 [pid 4722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4722] setpgid(0, 0) = 0 [pid 4722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4722] write(3, "1000", 4) = 4 [pid 4722] close(3) = 0 [pid 4722] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4722] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4722] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4723 attached , parent_tid=[4723], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4723 [pid 4723] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4723] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4722] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4723] <... futex resumed>) = 0 [pid 4723] mkdir("./file0", 000 [pid 4722] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4723] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4722] <... futex resumed>) = 0 [pid 4722] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4722] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4723] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4722] <... futex resumed>) = 0 [pid 4722] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4722] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4723] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4722] <... futex resumed>) = 0 [pid 4722] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4722] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4722] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4722] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4723] umount2("./file0", MNT_DETACH [pid 4722] <... clone resumed>, parent_tid=[4724], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4724 [pid 4722] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4722] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4724 attached [pid 4724] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4724] umount2("./file0", MNT_DETACH) = 0 [pid 4724] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4722] <... futex resumed>) = 0 [pid 4724] <... futex resumed>) = 1 [pid 4724] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4723] <... umount2 resumed>) = 0 [pid 4723] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4723] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4722] exit_group(0) = ? [pid 4723] <... futex resumed>) = ? [pid 4723] +++ exited with 0 +++ [pid 4724] <... futex resumed>) = ? [pid 4724] +++ exited with 0 +++ [pid 4722] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4722, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4725 ./strace-static-x86_64: Process 4725 attached [pid 4725] set_robust_list(0x5555564465e0, 24) = 0 [pid 4725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4725] setpgid(0, 0) = 0 [pid 4725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4725] write(3, "1000", 4) = 4 [pid 4725] close(3) = 0 [pid 4725] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4725] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4725] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4726 attached , parent_tid=[4726], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4726 [pid 4725] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4726] set_robust_list(0x7fc84e09f9e0, 24 [pid 4725] <... futex resumed>) = 0 [pid 4726] <... set_robust_list resumed>) = 0 [pid 4726] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4726] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4725] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4725] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4726] <... futex resumed>) = 0 [pid 4726] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4725] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4726] <... mount resumed>) = 0 [pid 4726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4726] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4725] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4725] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4726] <... futex resumed>) = 0 [pid 4725] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4726] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4726] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4725] <... futex resumed>) = 0 [pid 4725] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4726] <... futex resumed>) = 0 [pid 4725] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4726] umount2("./file0", MNT_DETACH [pid 4725] <... futex resumed>) = 0 [pid 4725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4725] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4726] <... umount2 resumed>) = 0 [pid 4726] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4726] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4725] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4727 attached [pid 4727] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4727] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4725] <... clone resumed>, parent_tid=[4727], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4727 [pid 4725] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4727] <... futex resumed>) = 0 [pid 4725] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4727] umount2("./file0", MNT_DETACH) = 0 [pid 4727] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4727] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4725] <... futex resumed>) = 0 [pid 4725] exit_group(0 [pid 4726] <... futex resumed>) = ? [pid 4725] <... exit_group resumed>) = ? [pid 4727] <... futex resumed>) = ? [pid 4726] +++ exited with 0 +++ [pid 4727] +++ exited with 0 +++ [pid 4725] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4725, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4728 ./strace-static-x86_64: Process 4728 attached [pid 4728] set_robust_list(0x5555564465e0, 24) = 0 [pid 4728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4728] setpgid(0, 0) = 0 [pid 4728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4728] write(3, "1000", 4) = 4 [pid 4728] close(3) = 0 [pid 4728] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4728] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4728] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4729 attached [pid 4729] set_robust_list(0x7fc84e09f9e0, 24 [pid 4728] <... clone resumed>, parent_tid=[4729], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4729 [pid 4729] <... set_robust_list resumed>) = 0 [pid 4729] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4728] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4729] <... futex resumed>) = 0 [pid 4729] mkdir("./file0", 000 [pid 4728] <... futex resumed>) = 1 [pid 4729] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4728] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4729] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4728] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4728] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4729] <... futex resumed>) = 0 [pid 4729] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4728] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4729] <... mount resumed>) = 0 [pid 4729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4729] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4728] <... futex resumed>) = 0 [pid 4728] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4729] <... futex resumed>) = 0 [pid 4729] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4728] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4729] <... mount resumed>) = 0 [pid 4729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4729] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4728] <... futex resumed>) = 0 [pid 4728] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4728] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4728] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4728] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4729] umount2("./file0", MNT_DETACH [pid 4728] <... clone resumed>, parent_tid=[4730], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4730 [pid 4728] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4729] <... umount2 resumed>) = 0 [pid 4728] <... futex resumed>) = 0 [pid 4728] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4730 attached [pid 4730] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4730] umount2("./file0", MNT_DETACH [pid 4729] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4730] <... umount2 resumed>) = 0 [pid 4730] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4728] <... futex resumed>) = 0 [pid 4728] exit_group(0) = ? [pid 4729] <... futex resumed>) = ? [pid 4730] <... futex resumed>) = ? [pid 4729] +++ exited with 0 +++ [pid 4730] +++ exited with 0 +++ [pid 4728] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4728, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4731 ./strace-static-x86_64: Process 4731 attached [pid 4731] set_robust_list(0x5555564465e0, 24) = 0 [pid 4731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4731] setpgid(0, 0) = 0 [pid 4731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4731] write(3, "1000", 4) = 4 [pid 4731] close(3) = 0 [pid 4731] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4731] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4731] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4731] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4732 attached [pid 4732] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4732] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4731] <... clone resumed>, parent_tid=[4732], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4732 [pid 4731] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4732] <... futex resumed>) = 0 [pid 4732] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4732] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4731] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4731] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4732] <... futex resumed>) = 0 [pid 4732] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4731] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4732] <... mount resumed>) = 0 [pid 4732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4732] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4731] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4731] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4732] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4731] <... futex resumed>) = 0 [pid 4732] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4731] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4732] <... mount resumed>) = 0 [pid 4732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4731] <... futex resumed>) = 0 [pid 4732] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4731] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4732] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4731] <... futex resumed>) = 0 [pid 4731] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4732] umount2("./file0", MNT_DETACH [pid 4731] <... futex resumed>) = 0 [pid 4731] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4731] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4731] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4732] <... umount2 resumed>) = 0 [pid 4732] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4731] <... clone resumed>, parent_tid=[4733], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4733 [pid 4732] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4731] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4731] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4733 attached [pid 4733] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4733] umount2("./file0", MNT_DETACH) = 0 [pid 4733] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4731] <... futex resumed>) = 0 [pid 4731] exit_group(0 [pid 4733] ????( [pid 4731] <... exit_group resumed>) = ? [pid 4732] <... futex resumed>) = ? [pid 4732] +++ exited with 0 +++ [pid 4733] <... ???? resumed>) = ? [pid 4733] +++ exited with 0 +++ [pid 4731] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4731, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4734 ./strace-static-x86_64: Process 4734 attached [pid 4734] set_robust_list(0x5555564465e0, 24) = 0 [pid 4734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4734] setpgid(0, 0) = 0 [pid 4734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4734] write(3, "1000", 4) = 4 [pid 4734] close(3) = 0 [pid 4734] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4734] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4734] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4734] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4735 attached [pid 4735] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4735] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4734] <... clone resumed>, parent_tid=[4735], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4735 [pid 4734] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4735] <... futex resumed>) = 0 [pid 4735] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4735] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4734] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4734] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4735] <... futex resumed>) = 0 [pid 4735] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4734] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4735] <... mount resumed>) = 0 [pid 4735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4735] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4734] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4735] <... futex resumed>) = 0 [pid 4735] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4734] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4735] <... mount resumed>) = 0 [pid 4735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4735] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4734] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4735] <... futex resumed>) = 0 [pid 4735] umount2("./file0", MNT_DETACH) = 0 [pid 4735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4735] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4734] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4735] <... futex resumed>) = 0 [pid 4734] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4735] umount2("./file0", MNT_DETACH) = 0 [pid 4735] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4735] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4734] <... futex resumed>) = 0 [pid 4734] exit_group(0) = ? [pid 4735] <... futex resumed>) = ? [pid 4735] +++ exited with 0 +++ [pid 4734] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4734, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4736 ./strace-static-x86_64: Process 4736 attached [pid 4736] set_robust_list(0x5555564465e0, 24) = 0 [pid 4736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4736] setpgid(0, 0) = 0 [pid 4736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4736] write(3, "1000", 4) = 4 [pid 4736] close(3) = 0 [pid 4736] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4736] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4736] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4737 attached [pid 4737] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4737] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4736] <... clone resumed>, parent_tid=[4737], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4737 [pid 4736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4736] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4737] <... futex resumed>) = 0 [pid 4737] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4736] <... futex resumed>) = 0 [pid 4736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4736] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4737] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4736] <... futex resumed>) = 0 [pid 4736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4736] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4737] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4737] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4736] <... futex resumed>) = 0 [pid 4736] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4736] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4736] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4736] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4737] <... futex resumed>) = 0 [pid 4736] <... clone resumed>, parent_tid=[4738], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4738 [pid 4737] umount2("./file0", MNT_DETACH [pid 4736] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4738 attached ) = 0 [pid 4738] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4737] <... umount2 resumed>) = 0 [pid 4736] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4737] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4738] umount2("./file0", MNT_DETACH [pid 4737] <... futex resumed>) = 0 [pid 4738] <... umount2 resumed>) = 0 [pid 4738] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4738] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4737] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4736] <... futex resumed>) = 0 [pid 4736] exit_group(0) = ? [pid 4737] <... futex resumed>) = ? [pid 4737] +++ exited with 0 +++ [pid 4738] <... futex resumed>) = ? [pid 4738] +++ exited with 0 +++ [pid 4736] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4736, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4739 ./strace-static-x86_64: Process 4739 attached [pid 4739] set_robust_list(0x5555564465e0, 24) = 0 [pid 4739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4739] setpgid(0, 0) = 0 [pid 4739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4739] write(3, "1000", 4) = 4 [pid 4739] close(3) = 0 [pid 4739] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4739] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4739] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4740 attached , parent_tid=[4740], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4740 [pid 4740] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4740] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4739] <... futex resumed>) = 0 [pid 4740] <... futex resumed>) = 1 [pid 4740] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4740] <... mount resumed>) = 0 [pid 4740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4739] <... futex resumed>) = 0 [pid 4740] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4740] <... mount resumed>) = 0 [pid 4740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4739] <... futex resumed>) = 0 [pid 4739] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4739] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4739] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4740] umount2("./file0", MNT_DETACH [pid 4739] <... clone resumed>, parent_tid=[4741], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4741 [pid 4739] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4739] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4740] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 4741 attached [pid 4741] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4741] umount2("./file0", MNT_DETACH [pid 4740] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4741] <... umount2 resumed>) = 0 [pid 4741] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4739] <... futex resumed>) = 0 [pid 4739] exit_group(0) = ? [pid 4741] <... futex resumed>) = ? [pid 4741] +++ exited with 0 +++ [pid 4740] <... futex resumed>) = ? [pid 4740] +++ exited with 0 +++ [pid 4739] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4739, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4742 ./strace-static-x86_64: Process 4742 attached [pid 4742] set_robust_list(0x5555564465e0, 24) = 0 [pid 4742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4742] setpgid(0, 0) = 0 [pid 4742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4742] write(3, "1000", 4) = 4 [pid 4742] close(3) = 0 [pid 4742] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4742] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4742] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4743 attached [pid 4743] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4743] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4742] <... clone resumed>, parent_tid=[4743], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4743 [pid 4742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4743] <... futex resumed>) = 0 [pid 4742] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4743] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4742] <... futex resumed>) = 0 [pid 4743] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4743] <... mount resumed>) = 0 [pid 4742] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4742] <... futex resumed>) = 0 [pid 4743] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4743] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4742] <... futex resumed>) = 0 [pid 4743] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4742] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4743] <... mount resumed>) = 0 [pid 4743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4742] <... futex resumed>) = 0 [pid 4743] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4742] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4742] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4743] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4743] umount2("./file0", MNT_DETACH [pid 4742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4742] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4742] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4743] <... umount2 resumed>) = 0 [pid 4742] <... clone resumed>, parent_tid=[4744], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4744 [pid 4742] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4742] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4743] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4744 attached ) = 0 [pid 4744] set_robust_list(0x7fc84e07e9e0, 24 [pid 4743] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4744] <... set_robust_list resumed>) = 0 [pid 4744] umount2("./file0", MNT_DETACH) = 0 [pid 4744] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4742] <... futex resumed>) = 0 [pid 4742] exit_group(0) = ? [pid 4743] <... futex resumed>) = ? [pid 4744] +++ exited with 0 +++ [pid 4743] +++ exited with 0 +++ [pid 4742] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4742, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4745 attached , child_tidptr=0x5555564465d0) = 4745 [pid 4745] set_robust_list(0x5555564465e0, 24) = 0 [pid 4745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4745] setpgid(0, 0) = 0 [pid 4745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4745] write(3, "1000", 4) = 4 [pid 4745] close(3) = 0 [pid 4745] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4745] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4745] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4746], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4746 [pid 4745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4745] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4746 attached [pid 4746] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4746] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4745] <... futex resumed>) = 0 [pid 4745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4745] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4746] <... futex resumed>) = 1 [pid 4746] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4745] <... futex resumed>) = 0 [pid 4746] <... futex resumed>) = 1 [pid 4745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4746] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4745] <... futex resumed>) = 0 [pid 4745] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4746] <... mount resumed>) = 0 [pid 4746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4745] <... futex resumed>) = 0 [pid 4746] <... futex resumed>) = 1 [pid 4745] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4746] umount2("./file0", MNT_DETACH [pid 4745] <... futex resumed>) = 0 [pid 4746] <... umount2 resumed>) = 0 [pid 4745] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4745] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4745] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4747 attached [pid 4747] set_robust_list(0x7fc84e07e9e0, 24 [pid 4745] <... clone resumed>, parent_tid=[4747], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4747 [pid 4747] <... set_robust_list resumed>) = 0 [pid 4745] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4745] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4747] umount2("./file0", MNT_DETACH) = 0 [pid 4747] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4745] <... futex resumed>) = 0 [pid 4747] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4746] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4746] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4745] exit_group(0) = ? [pid 4746] <... futex resumed>) = ? [pid 4747] <... futex resumed>) = ? [pid 4746] +++ exited with 0 +++ [pid 4747] +++ exited with 0 +++ [pid 4745] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4745, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4748 ./strace-static-x86_64: Process 4748 attached [pid 4748] set_robust_list(0x5555564465e0, 24) = 0 [pid 4748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4748] setpgid(0, 0) = 0 [pid 4748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4748] write(3, "1000", 4) = 4 [pid 4748] close(3) = 0 [pid 4748] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4748] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4748] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4749 attached , parent_tid=[4749], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4749 [pid 4749] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4749] <... futex resumed>) = 0 [pid 4749] mkdir("./file0", 000 [pid 4748] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4749] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4749] <... futex resumed>) = 0 [pid 4749] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4748] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4749] <... mount resumed>) = 0 [pid 4749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] <... futex resumed>) = 0 [pid 4748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4749] <... futex resumed>) = 0 [pid 4749] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4748] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4749] <... mount resumed>) = 0 [pid 4749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4748] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4749] <... futex resumed>) = 0 [pid 4749] umount2("./file0", MNT_DETACH [pid 4748] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4749] <... umount2 resumed>) = 0 [pid 4749] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4749] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] <... futex resumed>) = 0 [pid 4748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4748] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4748] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4750 attached [pid 4750] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4750] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] <... clone resumed>, parent_tid=[4750], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4750 [pid 4748] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4750] <... futex resumed>) = 0 [pid 4750] umount2("./file0", MNT_DETACH [pid 4748] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4750] <... umount2 resumed>) = 0 [pid 4750] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4750] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4748] exit_group(0 [pid 4749] <... futex resumed>) = ? [pid 4748] <... exit_group resumed>) = ? [pid 4749] +++ exited with 0 +++ [pid 4750] <... futex resumed>) = ? [pid 4750] +++ exited with 0 +++ [pid 4748] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4748, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4751 ./strace-static-x86_64: Process 4751 attached [pid 4751] set_robust_list(0x5555564465e0, 24) = 0 [pid 4751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4751] setpgid(0, 0) = 0 [pid 4751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4751] write(3, "1000", 4) = 4 [pid 4751] close(3) = 0 [pid 4751] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4751] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4751] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4752 attached [pid 4752] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] <... clone resumed>, parent_tid=[4752], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4752 [pid 4751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4752] <... futex resumed>) = 0 [pid 4751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4752] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4752] <... futex resumed>) = 0 [pid 4752] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4752] <... futex resumed>) = 0 [pid 4752] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4751] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4752] <... mount resumed>) = 0 [pid 4752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4751] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4752] <... futex resumed>) = 0 [pid 4752] umount2("./file0", MNT_DETACH [pid 4751] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4752] <... umount2 resumed>) = 0 [pid 4752] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4752] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] <... futex resumed>) = 0 [pid 4751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4751] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4751] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4753 attached [pid 4753] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4753] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] <... clone resumed>, parent_tid=[4753], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4753 [pid 4751] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4753] <... futex resumed>) = 0 [pid 4753] umount2("./file0", MNT_DETACH [pid 4751] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4753] <... umount2 resumed>) = 0 [pid 4753] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4753] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4751] exit_group(0 [pid 4752] <... futex resumed>) = ? [pid 4751] <... exit_group resumed>) = ? [pid 4752] +++ exited with 0 +++ [pid 4753] <... futex resumed>) = ? [pid 4753] +++ exited with 0 +++ [pid 4751] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4751, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4754 ./strace-static-x86_64: Process 4754 attached [pid 4754] set_robust_list(0x5555564465e0, 24) = 0 [pid 4754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4754] setpgid(0, 0) = 0 [pid 4754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4754] write(3, "1000", 4) = 4 [pid 4754] close(3) = 0 [pid 4754] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4754] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4754] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4755], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4755 [pid 4754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4755 attached [pid 4755] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4755] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4754] <... futex resumed>) = 0 [pid 4754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4755] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4754] <... futex resumed>) = 0 [pid 4754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4754] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4755] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4754] <... futex resumed>) = 0 [pid 4755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4754] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4755] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4754] <... futex resumed>) = 0 [pid 4754] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4754] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4754] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4755] umount2("./file0", MNT_DETACH [pid 4754] <... clone resumed>, parent_tid=[4756], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4756 [pid 4754] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4754] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4756 attached [pid 4756] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4756] umount2("./file0", MNT_DETACH) = 0 [pid 4756] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4754] <... futex resumed>) = 0 [pid 4756] <... futex resumed>) = 1 [pid 4755] <... umount2 resumed>) = 0 [pid 4756] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4755] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4755] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4754] exit_group(0) = ? [pid 4756] <... futex resumed>) = 231 [pid 4755] <... futex resumed>) = ? [pid 4755] +++ exited with 0 +++ [pid 4756] +++ exited with 0 +++ [pid 4754] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4754, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4757 ./strace-static-x86_64: Process 4757 attached [pid 4757] set_robust_list(0x5555564465e0, 24) = 0 [pid 4757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4757] setpgid(0, 0) = 0 [pid 4757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4757] write(3, "1000", 4) = 4 [pid 4757] close(3) = 0 [pid 4757] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4757] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4757] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4757] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4758 attached , parent_tid=[4758], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4758 [pid 4758] set_robust_list(0x7fc84e09f9e0, 24 [pid 4757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4758] <... set_robust_list resumed>) = 0 [pid 4757] <... futex resumed>) = 0 [pid 4757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4758] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4757] <... futex resumed>) = 0 [pid 4758] <... futex resumed>) = 1 [pid 4757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4758] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4757] <... futex resumed>) = 0 [pid 4757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4758] <... mount resumed>) = 0 [pid 4758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4757] <... futex resumed>) = 0 [pid 4758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4758] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4757] <... futex resumed>) = 0 [pid 4758] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4757] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4758] <... mount resumed>) = 0 [pid 4758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4757] <... futex resumed>) = 0 [pid 4758] <... futex resumed>) = 1 [pid 4757] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4758] umount2("./file0", MNT_DETACH [pid 4757] <... futex resumed>) = 0 [pid 4757] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4757] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4757] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4757] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4758] <... umount2 resumed>) = 0 [pid 4758] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4759 attached ) = 0 [pid 4757] <... clone resumed>, parent_tid=[4759], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4759 [pid 4759] set_robust_list(0x7fc84e07e9e0, 24 [pid 4758] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4759] <... set_robust_list resumed>) = 0 [pid 4757] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4759] umount2("./file0", MNT_DETACH [pid 4757] <... futex resumed>) = 0 [pid 4757] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4759] <... umount2 resumed>) = 0 [pid 4759] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4757] <... futex resumed>) = 0 [pid 4759] <... futex resumed>) = 1 [pid 4759] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4757] exit_group(0) = ? [pid 4758] <... futex resumed>) = ? [pid 4758] +++ exited with 0 +++ [pid 4759] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4759] +++ exited with 0 +++ [pid 4757] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4757, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4760 ./strace-static-x86_64: Process 4760 attached [pid 4760] set_robust_list(0x5555564465e0, 24) = 0 [pid 4760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4760] setpgid(0, 0) = 0 [pid 4760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4760] write(3, "1000", 4) = 4 [pid 4760] close(3) = 0 [pid 4760] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4760] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4760] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4761], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4761 ./strace-static-x86_64: Process 4761 attached [pid 4760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4761] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4761] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4761] <... futex resumed>) = 0 [pid 4761] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4761] <... mount resumed>) = 0 [pid 4761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4760] <... futex resumed>) = 0 [pid 4760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4761] <... futex resumed>) = 0 [pid 4761] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4760] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4761] <... mount resumed>) = 0 [pid 4761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4760] <... futex resumed>) = 0 [pid 4761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4760] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4761] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4760] <... futex resumed>) = 0 [pid 4761] umount2("./file0", MNT_DETACH [pid 4760] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4760] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4761] <... umount2 resumed>) = 0 [pid 4760] <... mprotect resumed>) = 0 [pid 4761] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4760] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4761] <... futex resumed>) = 0 [pid 4761] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4762 attached [pid 4760] <... clone resumed>, parent_tid=[4762], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4762 [pid 4762] set_robust_list(0x7fc84e07e9e0, 24 [pid 4760] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4762] <... set_robust_list resumed>) = 0 [pid 4760] <... futex resumed>) = 0 [pid 4762] umount2("./file0", MNT_DETACH [pid 4760] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4762] <... umount2 resumed>) = 0 [pid 4762] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4760] <... futex resumed>) = 0 [pid 4762] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4760] exit_group(0) = ? [pid 4761] <... futex resumed>) = ? [pid 4761] +++ exited with 0 +++ [pid 4762] <... futex resumed>) = ? [pid 4762] +++ exited with 0 +++ [pid 4760] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4760, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4763 ./strace-static-x86_64: Process 4763 attached [pid 4763] set_robust_list(0x5555564465e0, 24) = 0 [pid 4763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4763] setpgid(0, 0) = 0 [pid 4763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4763] write(3, "1000", 4) = 4 [pid 4763] close(3) = 0 [pid 4763] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4763] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4763] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4763] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4764], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4764 [pid 4763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4764 attached [pid 4764] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4764] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4763] <... futex resumed>) = 0 [pid 4763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4764] <... futex resumed>) = 1 [pid 4764] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4763] <... futex resumed>) = 0 [pid 4763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4763] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4764] <... futex resumed>) = 1 [pid 4764] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4763] <... futex resumed>) = 0 [pid 4764] <... futex resumed>) = 1 [pid 4763] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4764] umount2("./file0", MNT_DETACH [pid 4763] <... futex resumed>) = 0 [pid 4763] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4763] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4763] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4764] <... umount2 resumed>) = 0 [pid 4763] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4764] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 4765 attached [pid 4764] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4763] <... clone resumed>, parent_tid=[4765], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4765 [pid 4765] set_robust_list(0x7fc84e07e9e0, 24 [pid 4763] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4765] <... set_robust_list resumed>) = 0 [pid 4763] <... futex resumed>) = 0 [pid 4765] umount2("./file0", MNT_DETACH [pid 4763] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4765] <... umount2 resumed>) = 0 [pid 4765] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4763] <... futex resumed>) = 0 [pid 4765] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4763] exit_group(0 [pid 4765] <... futex resumed>) = ? [pid 4764] <... futex resumed>) = ? [pid 4763] <... exit_group resumed>) = ? [pid 4764] +++ exited with 0 +++ [pid 4765] +++ exited with 0 +++ [pid 4763] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4763, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4766 ./strace-static-x86_64: Process 4766 attached [pid 4766] set_robust_list(0x5555564465e0, 24) = 0 [pid 4766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4766] setpgid(0, 0) = 0 [pid 4766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4766] write(3, "1000", 4) = 4 [pid 4766] close(3) = 0 [pid 4766] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4766] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4766] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4767 attached , parent_tid=[4767], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4767 [pid 4767] set_robust_list(0x7fc84e09f9e0, 24 [pid 4766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4767] <... set_robust_list resumed>) = 0 [pid 4766] <... futex resumed>) = 0 [pid 4766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4767] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4766] <... futex resumed>) = 0 [pid 4766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4767] <... futex resumed>) = 0 [pid 4767] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4766] <... futex resumed>) = 0 [pid 4766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4766] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4767] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4766] <... futex resumed>) = 0 [pid 4767] umount2("./file0", MNT_DETACH [pid 4766] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4766] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4767] <... umount2 resumed>) = 0 [pid 4766] <... futex resumed>) = 0 [pid 4767] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4767] <... futex resumed>) = 0 [pid 4766] <... mmap resumed>) = 0x7fc84e05e000 [pid 4767] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4766] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4766] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4768 attached [pid 4768] set_robust_list(0x7fc84e07e9e0, 24 [pid 4766] <... clone resumed>, parent_tid=[4768], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4768 [pid 4768] <... set_robust_list resumed>) = 0 [pid 4766] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4768] umount2("./file0", MNT_DETACH [pid 4766] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4768] <... umount2 resumed>) = 0 [pid 4768] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4766] <... futex resumed>) = 0 [pid 4768] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4766] exit_group(0 [pid 4767] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4766] <... exit_group resumed>) = ? [pid 4768] <... futex resumed>) = ? [pid 4767] +++ exited with 0 +++ [pid 4768] +++ exited with 0 +++ [pid 4766] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4766, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4769 ./strace-static-x86_64: Process 4769 attached [pid 4769] set_robust_list(0x5555564465e0, 24) = 0 [pid 4769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4769] setpgid(0, 0) = 0 [pid 4769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4769] write(3, "1000", 4) = 4 [pid 4769] close(3) = 0 [pid 4769] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4769] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4769] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4769] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4770 attached , parent_tid=[4770], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4770 [pid 4770] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4770] <... futex resumed>) = 0 [pid 4770] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4770] <... futex resumed>) = 0 [pid 4770] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4770] <... futex resumed>) = 0 [pid 4770] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4769] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4770] <... mount resumed>) = 0 [pid 4770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4769] <... futex resumed>) = 0 [pid 4769] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4770] <... futex resumed>) = 0 [pid 4770] umount2("./file0", MNT_DETACH [pid 4769] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4770] <... umount2 resumed>) = 0 [pid 4769] <... futex resumed>) = 0 [pid 4770] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4769] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4770] <... futex resumed>) = 0 [pid 4769] <... mmap resumed>) = 0x7fc84e05e000 [pid 4770] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4769] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4769] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4771 attached , parent_tid=[4771], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4771 [pid 4771] set_robust_list(0x7fc84e07e9e0, 24 [pid 4769] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4771] <... set_robust_list resumed>) = 0 [pid 4769] <... futex resumed>) = 0 [pid 4769] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4771] umount2("./file0", MNT_DETACH) = 0 [pid 4771] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4769] <... futex resumed>) = 0 [pid 4771] <... futex resumed>) = 1 [pid 4769] exit_group(0 [pid 4771] ????( [pid 4770] <... futex resumed>) = ? [pid 4769] <... exit_group resumed>) = ? [pid 4771] <... ???? resumed>) = ? [pid 4770] +++ exited with 0 +++ [pid 4771] +++ exited with 0 +++ [pid 4769] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4769, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4772 ./strace-static-x86_64: Process 4772 attached [pid 4772] set_robust_list(0x5555564465e0, 24) = 0 [pid 4772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4772] setpgid(0, 0) = 0 [pid 4772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4772] write(3, "1000", 4) = 4 [pid 4772] close(3) = 0 [pid 4772] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4772] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4772] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4773 attached [pid 4773] set_robust_list(0x7fc84e09f9e0, 24 [pid 4772] <... clone resumed>, parent_tid=[4773], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4773 [pid 4773] <... set_robust_list resumed>) = 0 [pid 4773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4773] <... futex resumed>) = 0 [pid 4772] <... futex resumed>) = 1 [pid 4772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4773] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4773] <... futex resumed>) = 0 [pid 4773] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4773] <... futex resumed>) = 0 [pid 4773] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4772] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4773] <... mount resumed>) = 0 [pid 4773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4772] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4773] <... futex resumed>) = 0 [pid 4773] umount2("./file0", MNT_DETACH [pid 4772] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4773] <... umount2 resumed>) = 0 [pid 4773] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4773] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4772] <... futex resumed>) = 0 [pid 4772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4772] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4772] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4774 attached , parent_tid=[4774], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4774 [pid 4774] set_robust_list(0x7fc84e07e9e0, 24 [pid 4772] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4774] <... set_robust_list resumed>) = 0 [pid 4772] <... futex resumed>) = 0 [pid 4774] umount2("./file0", MNT_DETACH [pid 4772] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4774] <... umount2 resumed>) = 0 [pid 4774] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4772] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4774] <... futex resumed>) = 0 [pid 4772] exit_group(0) = ? [pid 4773] <... futex resumed>) = ? [pid 4773] +++ exited with 0 +++ [pid 4774] +++ exited with 0 +++ [pid 4772] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4772, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4775 ./strace-static-x86_64: Process 4775 attached [pid 4775] set_robust_list(0x5555564465e0, 24) = 0 [pid 4775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4775] setpgid(0, 0) = 0 [pid 4775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4775] write(3, "1000", 4) = 4 [pid 4775] close(3) = 0 [pid 4775] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4775] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4775] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4776 attached , parent_tid=[4776], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4776 [pid 4776] set_robust_list(0x7fc84e09f9e0, 24 [pid 4775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4776] <... set_robust_list resumed>) = 0 [pid 4775] <... futex resumed>) = 0 [pid 4775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4776] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4775] <... futex resumed>) = 0 [pid 4776] <... futex resumed>) = 1 [pid 4775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4776] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4775] <... futex resumed>) = 0 [pid 4775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4776] <... mount resumed>) = 0 [pid 4776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4775] <... futex resumed>) = 0 [pid 4775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4775] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4776] <... futex resumed>) = 1 [pid 4776] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4775] <... futex resumed>) = 0 [pid 4775] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4775] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4775] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4775] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4777], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4777 [pid 4775] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4775] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4776] <... futex resumed>) = 1 [pid 4776] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4777 attached ) = 0 [pid 4776] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4776] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4777] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4777] umount2("./file0", MNT_DETACH) = 0 [pid 4777] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4775] <... futex resumed>) = 0 [pid 4775] exit_group(0) = ? [pid 4776] <... futex resumed>) = ? [pid 4776] +++ exited with 0 +++ [pid 4777] +++ exited with 0 +++ [pid 4775] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4775, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4778 ./strace-static-x86_64: Process 4778 attached [pid 4778] set_robust_list(0x5555564465e0, 24) = 0 [pid 4778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4778] setpgid(0, 0) = 0 [pid 4778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4778] write(3, "1000", 4) = 4 [pid 4778] close(3) = 0 [pid 4778] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4778] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4778] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4779], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4779 ./strace-static-x86_64: Process 4779 attached [pid 4779] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4779] <... futex resumed>) = 0 [pid 4779] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4779] <... futex resumed>) = 0 [pid 4779] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4779] <... mount resumed>) = 0 [pid 4779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4778] <... futex resumed>) = 0 [pid 4779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4779] <... futex resumed>) = 0 [pid 4779] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4778] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4779] <... mount resumed>) = 0 [pid 4779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4778] <... futex resumed>) = 0 [pid 4778] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4779] umount2("./file0", MNT_DETACH [pid 4778] <... futex resumed>) = 0 [pid 4778] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4779] <... umount2 resumed>) = 0 [pid 4778] <... futex resumed>) = 0 [pid 4779] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4779] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4778] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4778] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4780 attached [pid 4780] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4778] <... clone resumed>, parent_tid=[4780], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4780 [pid 4780] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4778] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4780] <... futex resumed>) = 0 [pid 4780] umount2("./file0", MNT_DETACH [pid 4778] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4780] <... umount2 resumed>) = 0 [pid 4780] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4780] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4778] <... futex resumed>) = 0 [pid 4778] exit_group(0 [pid 4779] <... futex resumed>) = ? [pid 4778] <... exit_group resumed>) = ? [pid 4780] <... futex resumed>) = ? [pid 4779] +++ exited with 0 +++ [pid 4780] +++ exited with 0 +++ [pid 4778] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4778, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4781 attached , child_tidptr=0x5555564465d0) = 4781 [pid 4781] set_robust_list(0x5555564465e0, 24) = 0 [pid 4781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4781] setpgid(0, 0) = 0 [pid 4781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4781] write(3, "1000", 4) = 4 [pid 4781] close(3) = 0 [pid 4781] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4781] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4781] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4782], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4782 [pid 4781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4782 attached [pid 4782] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4782] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4781] <... futex resumed>) = 0 [pid 4781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4782] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4781] <... futex resumed>) = 0 [pid 4781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4782] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4781] <... futex resumed>) = 0 [pid 4781] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4781] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4781] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4782] umount2("./file0", MNT_DETACH [pid 4781] <... clone resumed>, parent_tid=[4783], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4783 [pid 4781] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4781] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4783 attached [pid 4783] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4783] umount2("./file0", MNT_DETACH [pid 4782] <... umount2 resumed>) = 0 [pid 4782] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4782] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4783] <... umount2 resumed>) = 0 [pid 4783] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4781] <... futex resumed>) = 0 [pid 4781] exit_group(0) = ? [pid 4782] <... futex resumed>) = ? [pid 4782] +++ exited with 0 +++ [pid 4783] +++ exited with 0 +++ [pid 4781] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4781, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4784 attached , child_tidptr=0x5555564465d0) = 4784 [pid 4784] set_robust_list(0x5555564465e0, 24) = 0 [pid 4784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4784] setpgid(0, 0) = 0 [pid 4784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4784] write(3, "1000", 4) = 4 [pid 4784] close(3) = 0 [pid 4784] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4784] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4784] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4785], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4785 [pid 4784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4785 attached [pid 4785] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4785] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4784] <... futex resumed>) = 0 [pid 4784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4785] <... futex resumed>) = 1 [pid 4785] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4784] <... futex resumed>) = 0 [pid 4785] <... futex resumed>) = 1 [pid 4784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4785] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4784] <... futex resumed>) = 0 [pid 4784] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4785] <... mount resumed>) = 0 [pid 4785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4784] <... futex resumed>) = 0 [pid 4785] <... futex resumed>) = 1 [pid 4784] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4785] umount2("./file0", MNT_DETACH [pid 4784] <... futex resumed>) = 0 [pid 4784] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4784] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4785] <... umount2 resumed>) = 0 [pid 4784] <... mprotect resumed>) = 0 [pid 4785] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4784] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4785] <... futex resumed>) = 0 [pid 4785] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4786 attached [pid 4784] <... clone resumed>, parent_tid=[4786], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4786 [pid 4786] set_robust_list(0x7fc84e07e9e0, 24 [pid 4784] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4786] <... set_robust_list resumed>) = 0 [pid 4784] <... futex resumed>) = 0 [pid 4786] umount2("./file0", MNT_DETACH [pid 4784] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4786] <... umount2 resumed>) = 0 [pid 4786] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4784] <... futex resumed>) = 0 [pid 4784] exit_group(0) = ? [pid 4785] <... futex resumed>) = ? [pid 4786] <... futex resumed>) = ? [pid 4785] +++ exited with 0 +++ [pid 4786] +++ exited with 0 +++ [pid 4784] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4784, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4787 ./strace-static-x86_64: Process 4787 attached [pid 4787] set_robust_list(0x5555564465e0, 24) = 0 [pid 4787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4787] setpgid(0, 0) = 0 [pid 4787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4787] write(3, "1000", 4) = 4 [pid 4787] close(3) = 0 [pid 4787] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4787] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4787] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4788 attached , parent_tid=[4788], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4788 [pid 4787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4788] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4788] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4787] <... futex resumed>) = 1 [pid 4788] <... futex resumed>) = 0 [pid 4788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4788] <... futex resumed>) = 0 [pid 4787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4788] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4787] <... futex resumed>) = 0 [pid 4788] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4787] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4788] <... mount resumed>) = 0 [pid 4788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4787] <... futex resumed>) = 0 [pid 4788] umount2("./file0", MNT_DETACH [pid 4787] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4787] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4788] <... umount2 resumed>) = 0 [pid 4787] <... futex resumed>) = 0 [pid 4788] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4788] <... futex resumed>) = 0 [pid 4787] <... mmap resumed>) = 0x7fc84e05e000 [pid 4788] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4787] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4787] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4789], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4789 [pid 4787] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4789 attached ) = 0 [pid 4789] set_robust_list(0x7fc84e07e9e0, 24 [pid 4787] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4789] <... set_robust_list resumed>) = 0 [pid 4789] umount2("./file0", MNT_DETACH) = 0 [pid 4789] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4787] <... futex resumed>) = 0 [pid 4789] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4787] exit_group(0) = ? [pid 4789] <... futex resumed>) = ? [pid 4789] +++ exited with 0 +++ [pid 4788] <... futex resumed>) = ? [pid 4788] +++ exited with 0 +++ [pid 4787] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4787, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4790 attached , child_tidptr=0x5555564465d0) = 4790 [pid 4790] set_robust_list(0x5555564465e0, 24) = 0 [pid 4790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4790] setpgid(0, 0) = 0 [pid 4790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4790] write(3, "1000", 4) = 4 [pid 4790] close(3) = 0 [pid 4790] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4790] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4790] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4791], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4791 ./strace-static-x86_64: Process 4791 attached [pid 4791] set_robust_list(0x7fc84e09f9e0, 24 [pid 4790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4791] <... set_robust_list resumed>) = 0 [pid 4790] <... futex resumed>) = 0 [pid 4791] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4791] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4790] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4791] <... futex resumed>) = 0 [pid 4791] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4791] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4790] <... futex resumed>) = 0 [pid 4790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4791] <... futex resumed>) = 0 [pid 4791] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4790] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4791] <... mount resumed>) = 0 [pid 4791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4790] <... futex resumed>) = 0 [pid 4790] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4790] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4790] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4790] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4791] umount2("./file0", MNT_DETACH [pid 4790] <... clone resumed>, parent_tid=[4792], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4792 [pid 4790] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4790] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4792 attached [pid 4792] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4792] umount2("./file0", MNT_DETACH [pid 4791] <... umount2 resumed>) = 0 [pid 4791] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4792] <... umount2 resumed>) = 0 [pid 4791] <... futex resumed>) = 0 [pid 4792] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4790] <... futex resumed>) = 0 [pid 4790] exit_group(0) = ? [pid 4792] <... futex resumed>) = ? [pid 4792] +++ exited with 0 +++ [pid 4791] +++ exited with 0 +++ [pid 4790] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4790, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4793 attached , child_tidptr=0x5555564465d0) = 4793 [pid 4793] set_robust_list(0x5555564465e0, 24) = 0 [pid 4793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4793] setpgid(0, 0) = 0 [pid 4793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4793] write(3, "1000", 4) = 4 [pid 4793] close(3) = 0 [pid 4793] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4793] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4793] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4793] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4794], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4794 [pid 4793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4794 attached [pid 4794] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4794] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4793] <... futex resumed>) = 0 [pid 4794] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4794] <... mount resumed>) = 0 [pid 4794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4793] <... futex resumed>) = 0 [pid 4793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4793] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4794] <... futex resumed>) = 1 [pid 4794] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4793] <... futex resumed>) = 0 [pid 4794] <... futex resumed>) = 1 [pid 4793] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4794] umount2("./file0", MNT_DETACH [pid 4793] <... futex resumed>) = 0 [pid 4793] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4793] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4793] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4794] <... umount2 resumed>) = 0 [pid 4793] <... mprotect resumed>) = 0 [pid 4794] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4793] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4794] <... futex resumed>) = 0 [pid 4794] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4795 attached [pid 4795] set_robust_list(0x7fc84e07e9e0, 24 [pid 4793] <... clone resumed>, parent_tid=[4795], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4795 [pid 4795] <... set_robust_list resumed>) = 0 [pid 4793] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4795] umount2("./file0", MNT_DETACH [pid 4793] <... futex resumed>) = 0 [pid 4793] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4795] <... umount2 resumed>) = 0 [pid 4795] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4793] <... futex resumed>) = 0 [pid 4795] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4793] exit_group(0) = ? [pid 4794] <... futex resumed>) = ? [pid 4794] +++ exited with 0 +++ [pid 4795] <... futex resumed>) = ? [pid 4795] +++ exited with 0 +++ [pid 4793] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4793, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4796 attached , child_tidptr=0x5555564465d0) = 4796 [pid 4796] set_robust_list(0x5555564465e0, 24) = 0 [pid 4796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4796] setpgid(0, 0) = 0 [pid 4796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4796] write(3, "1000", 4) = 4 [pid 4796] close(3) = 0 [pid 4796] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4796] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4796] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4797 attached , parent_tid=[4797], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4797 [pid 4796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4797] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4797] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4796] <... futex resumed>) = 0 [pid 4796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4797] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4796] <... futex resumed>) = 0 [pid 4796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4797] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4796] <... futex resumed>) = 0 [pid 4796] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4796] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4796] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4798], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4798 [pid 4797] umount2("./file0", MNT_DETACH [pid 4796] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4796] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4798 attached [pid 4798] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4798] umount2("./file0", MNT_DETACH [pid 4797] <... umount2 resumed>) = 0 [pid 4797] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4798] <... umount2 resumed>) = 0 [pid 4797] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4798] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4796] <... futex resumed>) = 0 [pid 4796] exit_group(0) = ? [pid 4798] <... futex resumed>) = ? [pid 4798] +++ exited with 0 +++ [pid 4797] <... futex resumed>) = ? [pid 4797] +++ exited with 0 +++ [pid 4796] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4796, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4799 attached , child_tidptr=0x5555564465d0) = 4799 [pid 4799] set_robust_list(0x5555564465e0, 24) = 0 [pid 4799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4799] setpgid(0, 0) = 0 [pid 4799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4799] write(3, "1000", 4) = 4 [pid 4799] close(3) = 0 [pid 4799] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4799] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4799] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4800 attached , parent_tid=[4800], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4800 [pid 4799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4799] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4800] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4800] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4799] <... futex resumed>) = 0 [pid 4800] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4799] <... futex resumed>) = 0 [pid 4800] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4799] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4800] <... mount resumed>) = 0 [pid 4800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4799] <... futex resumed>) = 0 [pid 4800] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4799] <... futex resumed>) = 0 [pid 4800] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4799] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4800] <... mount resumed>) = 0 [pid 4800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4799] <... futex resumed>) = 0 [pid 4800] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4799] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4799] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4799] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4799] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4801], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4801 [pid 4799] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4799] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4801 attached [pid 4801] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4801] umount2("./file0", MNT_DETACH [pid 4800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4800] umount2("./file0", MNT_DETACH) = 0 [pid 4800] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4801] <... umount2 resumed>) = 0 [pid 4801] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4799] <... futex resumed>) = 0 [pid 4799] exit_group(0) = ? [pid 4801] <... futex resumed>) = ? [pid 4801] +++ exited with 0 +++ [pid 4800] <... futex resumed>) = ? [pid 4800] +++ exited with 0 +++ [pid 4799] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4799, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4802 ./strace-static-x86_64: Process 4802 attached [pid 4802] set_robust_list(0x5555564465e0, 24) = 0 [pid 4802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4802] setpgid(0, 0) = 0 [pid 4802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4802] write(3, "1000", 4) = 4 [pid 4802] close(3) = 0 [pid 4802] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4802] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4802] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4803], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4803 [pid 4802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4802] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4803 attached [pid 4803] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4803] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4802] <... futex resumed>) = 0 [pid 4802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4802] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4803] <... futex resumed>) = 1 [pid 4803] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4802] <... futex resumed>) = 0 [pid 4803] <... futex resumed>) = 1 [pid 4802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4803] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4802] <... futex resumed>) = 0 [pid 4802] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4803] <... mount resumed>) = 0 [pid 4803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4802] <... futex resumed>) = 0 [pid 4802] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4802] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4803] umount2("./file0", MNT_DETACH [pid 4802] <... mmap resumed>) = 0x7fc84e05e000 [pid 4802] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4802] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4803] <... umount2 resumed>) = 0 [pid 4802] <... clone resumed>, parent_tid=[4804], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4804 [pid 4802] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4802] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4804 attached [pid 4803] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4804] set_robust_list(0x7fc84e07e9e0, 24 [pid 4803] <... futex resumed>) = 0 [pid 4804] <... set_robust_list resumed>) = 0 [pid 4803] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4804] umount2("./file0", MNT_DETACH) = 0 [pid 4804] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4802] <... futex resumed>) = 0 [pid 4802] exit_group(0) = ? [pid 4803] <... futex resumed>) = ? [pid 4803] +++ exited with 0 +++ [pid 4804] +++ exited with 0 +++ [pid 4802] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4802, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4805 ./strace-static-x86_64: Process 4805 attached [pid 4805] set_robust_list(0x5555564465e0, 24) = 0 [pid 4805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4805] setpgid(0, 0) = 0 [pid 4805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4805] write(3, "1000", 4) = 4 [pid 4805] close(3) = 0 [pid 4805] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4805] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4805] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4806 attached , parent_tid=[4806], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4806 [pid 4805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4805] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4806] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4806] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4805] <... futex resumed>) = 0 [pid 4805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4805] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4806] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4805] <... futex resumed>) = 0 [pid 4805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4805] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4806] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4805] <... futex resumed>) = 0 [pid 4805] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4805] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4805] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4806] umount2("./file0", MNT_DETACH [pid 4805] <... mprotect resumed>) = 0 [pid 4805] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4807], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4807 [pid 4805] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4806] <... umount2 resumed>) = 0 [pid 4805] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4807 attached [pid 4807] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4807] umount2("./file0", MNT_DETACH [pid 4806] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4807] <... umount2 resumed>) = 0 [pid 4807] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4806] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4805] <... futex resumed>) = 0 [pid 4805] exit_group(0) = ? [pid 4806] <... futex resumed>) = ? [pid 4807] <... futex resumed>) = ? [pid 4807] +++ exited with 0 +++ [pid 4806] +++ exited with 0 +++ [pid 4805] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4805, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4808 ./strace-static-x86_64: Process 4808 attached [pid 4808] set_robust_list(0x5555564465e0, 24) = 0 [pid 4808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4808] setpgid(0, 0) = 0 [pid 4808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4808] write(3, "1000", 4) = 4 [pid 4808] close(3) = 0 [pid 4808] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4808] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4808] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4809 attached , parent_tid=[4809], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4809 [pid 4808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4808] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4809] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4809] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4808] <... futex resumed>) = 0 [pid 4808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4808] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4809] <... futex resumed>) = 0 [pid 4809] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4808] <... futex resumed>) = 0 [pid 4809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4808] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4809] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4808] <... futex resumed>) = 0 [pid 4808] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4808] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4808] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4809] umount2("./file0", MNT_DETACH [pid 4808] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4810], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4810 [pid 4809] <... umount2 resumed>) = 0 [pid 4808] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4808] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4810 attached [pid 4809] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4810] set_robust_list(0x7fc84e07e9e0, 24 [pid 4809] <... futex resumed>) = 0 [pid 4810] <... set_robust_list resumed>) = 0 [pid 4809] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4810] umount2("./file0", MNT_DETACH) = 0 [pid 4810] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4808] <... futex resumed>) = 0 [pid 4808] exit_group(0) = ? [pid 4809] <... futex resumed>) = ? [pid 4809] +++ exited with 0 +++ [pid 4810] +++ exited with 0 +++ [pid 4808] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4808, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4811 ./strace-static-x86_64: Process 4811 attached [pid 4811] set_robust_list(0x5555564465e0, 24) = 0 [pid 4811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4811] setpgid(0, 0) = 0 [pid 4811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4811] write(3, "1000", 4) = 4 [pid 4811] close(3) = 0 [pid 4811] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4811] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4811] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4811] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4812 attached , parent_tid=[4812], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4812 [pid 4812] set_robust_list(0x7fc84e09f9e0, 24 [pid 4811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4811] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4812] <... set_robust_list resumed>) = 0 [pid 4812] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4811] <... futex resumed>) = 0 [pid 4811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4811] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4812] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4811] <... futex resumed>) = 0 [pid 4811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4811] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4812] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4811] <... futex resumed>) = 0 [pid 4812] umount2("./file0", MNT_DETACH [pid 4811] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4812] <... umount2 resumed>) = 0 [pid 4811] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4812] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4811] <... futex resumed>) = 0 [pid 4812] <... futex resumed>) = 0 [pid 4811] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4812] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4811] <... mmap resumed>) = 0x7fc84e05e000 [pid 4811] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4811] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4813], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4813 [pid 4811] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4811] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4813 attached [pid 4813] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4813] umount2("./file0", MNT_DETACH) = 0 [pid 4813] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4811] <... futex resumed>) = 0 [pid 4813] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4811] exit_group(0 [pid 4812] <... futex resumed>) = ? [pid 4811] <... exit_group resumed>) = ? [pid 4812] +++ exited with 0 +++ [pid 4813] <... futex resumed>) = ? [pid 4813] +++ exited with 0 +++ [pid 4811] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4811, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4814 attached , child_tidptr=0x5555564465d0) = 4814 [pid 4814] set_robust_list(0x5555564465e0, 24) = 0 [pid 4814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4814] setpgid(0, 0) = 0 [pid 4814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4814] write(3, "1000", 4) = 4 [pid 4814] close(3) = 0 [pid 4814] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4814] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4814] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4815 attached , parent_tid=[4815], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4815 [pid 4814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4814] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4815] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4815] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4815] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4814] <... futex resumed>) = 0 [pid 4814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4815] <... futex resumed>) = 0 [pid 4814] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4815] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4814] <... futex resumed>) = 0 [pid 4815] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4814] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4815] <... mount resumed>) = 0 [pid 4815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4814] <... futex resumed>) = 0 [pid 4814] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4814] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4815] umount2("./file0", MNT_DETACH [pid 4814] <... mmap resumed>) = 0x7fc84e05e000 [pid 4814] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4814] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4815] <... umount2 resumed>) = 0 [pid 4814] <... clone resumed>, parent_tid=[4816], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4816 [pid 4814] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4814] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4816 attached [pid 4816] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4816] umount2("./file0", MNT_DETACH [pid 4815] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4816] <... umount2 resumed>) = 0 [pid 4816] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4814] <... futex resumed>) = 0 [pid 4816] <... futex resumed>) = 1 [pid 4816] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4814] exit_group(0) = ? [pid 4816] <... futex resumed>) = 231 [pid 4816] +++ exited with 0 +++ [pid 4815] <... futex resumed>) = ? [pid 4815] +++ exited with 0 +++ [pid 4814] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4814, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4817 ./strace-static-x86_64: Process 4817 attached [pid 4817] set_robust_list(0x5555564465e0, 24) = 0 [pid 4817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4817] setpgid(0, 0) = 0 [pid 4817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4817] write(3, "1000", 4) = 4 [pid 4817] close(3) = 0 [pid 4817] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4817] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4817] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4817] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4818 attached , parent_tid=[4818], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4818 [pid 4818] set_robust_list(0x7fc84e09f9e0, 24 [pid 4817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4818] <... set_robust_list resumed>) = 0 [pid 4817] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4818] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4817] <... futex resumed>) = 0 [pid 4818] <... futex resumed>) = 1 [pid 4817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4818] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4817] <... futex resumed>) = 0 [pid 4817] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4818] <... mount resumed>) = 0 [pid 4818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4817] <... futex resumed>) = 0 [pid 4818] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4817] <... futex resumed>) = 0 [pid 4818] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4817] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4818] <... mount resumed>) = 0 [pid 4818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4817] <... futex resumed>) = 0 [pid 4817] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4817] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4817] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4817] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4818] umount2("./file0", MNT_DETACH [pid 4817] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4819 attached [pid 4819] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4819] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4817] <... clone resumed>, parent_tid=[4819], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4819 [pid 4819] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4817] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4819] umount2("./file0", MNT_DETACH [pid 4817] <... futex resumed>) = 0 [pid 4818] <... umount2 resumed>) = 0 [pid 4817] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4818] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4819] <... umount2 resumed>) = 0 [pid 4819] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4817] <... futex resumed>) = 0 [pid 4818] <... futex resumed>) = 0 [pid 4819] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4818] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4817] exit_group(0) = ? [pid 4818] <... futex resumed>) = 231 [pid 4819] <... futex resumed>) = ? [pid 4819] +++ exited with 0 +++ [pid 4818] +++ exited with 0 +++ [pid 4817] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4817, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4820 attached , child_tidptr=0x5555564465d0) = 4820 [pid 4820] set_robust_list(0x5555564465e0, 24) = 0 [pid 4820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4820] setpgid(0, 0) = 0 [pid 4820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4820] write(3, "1000", 4) = 4 [pid 4820] close(3) = 0 [pid 4820] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4820] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4820] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4821], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4821 [pid 4820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4821 attached [pid 4821] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4821] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4820] <... futex resumed>) = 0 [pid 4820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4821] <... futex resumed>) = 1 [pid 4821] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4820] <... futex resumed>) = 0 [pid 4820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4821] <... futex resumed>) = 1 [pid 4821] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4820] <... futex resumed>) = 0 [pid 4820] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4821] umount2("./file0", MNT_DETACH [pid 4820] <... mmap resumed>) = 0x7fc84e05e000 [pid 4820] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4820] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4822], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4822 [pid 4820] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4820] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4822 attached [pid 4822] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4822] umount2("./file0", MNT_DETACH) = 0 [pid 4822] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4820] <... futex resumed>) = 0 [pid 4822] <... futex resumed>) = 1 [pid 4821] <... umount2 resumed>) = 0 [pid 4822] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4821] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4821] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4820] exit_group(0) = ? [pid 4822] <... futex resumed>) = ? [pid 4822] +++ exited with 0 +++ [pid 4821] <... futex resumed>) = ? [pid 4821] +++ exited with 0 +++ [pid 4820] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4820, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4823 attached , child_tidptr=0x5555564465d0) = 4823 [pid 4823] set_robust_list(0x5555564465e0, 24) = 0 [pid 4823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4823] setpgid(0, 0) = 0 [pid 4823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4823] write(3, "1000", 4) = 4 [pid 4823] close(3) = 0 [pid 4823] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4823] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4823] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4823] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4824 attached [pid 4824] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4824] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4823] <... clone resumed>, parent_tid=[4824], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4824 [pid 4823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4824] <... futex resumed>) = 0 [pid 4824] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4824] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4823] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4824] <... futex resumed>) = 0 [pid 4824] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4823] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4824] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4823] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4824] <... futex resumed>) = 0 [pid 4824] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4823] <... futex resumed>) = 0 [pid 4823] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4823] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4823] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4824] umount2("./file0", MNT_DETACH [pid 4823] <... mmap resumed>) = 0x7fc84e05e000 [pid 4823] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4823] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4825], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4825 [pid 4824] <... umount2 resumed>) = 0 [pid 4823] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4823] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4825 attached [pid 4825] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4825] umount2("./file0", MNT_DETACH) = 0 [pid 4825] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4823] <... futex resumed>) = 0 [pid 4825] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4824] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4824] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4823] exit_group(0) = ? [pid 4824] <... futex resumed>) = ? [pid 4824] +++ exited with 0 +++ [pid 4825] <... futex resumed>) = ? [pid 4825] +++ exited with 0 +++ [pid 4823] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4823, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4826 ./strace-static-x86_64: Process 4826 attached [pid 4826] set_robust_list(0x5555564465e0, 24) = 0 [pid 4826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4826] setpgid(0, 0) = 0 [pid 4826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4826] write(3, "1000", 4) = 4 [pid 4826] close(3) = 0 [pid 4826] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4826] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4826] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4827 attached , parent_tid=[4827], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4827 [pid 4827] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4827] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4826] <... futex resumed>) = 1 [pid 4827] <... futex resumed>) = 0 [pid 4827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4827] <... futex resumed>) = 0 [pid 4827] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4827] <... mount resumed>) = 0 [pid 4827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4826] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4827] <... futex resumed>) = 0 [pid 4827] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4827] <... mount resumed>) = 0 [pid 4827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4826] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4827] <... futex resumed>) = 0 [pid 4827] umount2("./file0", MNT_DETACH) = 0 [pid 4827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4826] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4827] <... futex resumed>) = 0 [pid 4827] umount2("./file0", MNT_DETACH [pid 4826] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4827] <... umount2 resumed>) = 0 [pid 4827] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4827] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4826] <... futex resumed>) = 0 [pid 4826] exit_group(0) = ? [pid 4827] <... futex resumed>) = ? [pid 4827] +++ exited with 0 +++ [pid 4826] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4826, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4828 attached , child_tidptr=0x5555564465d0) = 4828 [pid 4828] set_robust_list(0x5555564465e0, 24) = 0 [pid 4828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4828] setpgid(0, 0) = 0 [pid 4828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4828] write(3, "1000", 4) = 4 [pid 4828] close(3) = 0 [pid 4828] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4828] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4828] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4829 attached , parent_tid=[4829], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4829 [pid 4829] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4829] <... futex resumed>) = 0 [pid 4828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4829] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4828] <... futex resumed>) = 0 [pid 4828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4829] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4828] <... futex resumed>) = 0 [pid 4828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4828] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4829] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4828] <... futex resumed>) = 0 [pid 4828] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4828] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4828] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4828] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4830], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4830 ./strace-static-x86_64: Process 4830 attached [pid 4828] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4828] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4829] umount2("./file0", MNT_DETACH) = 0 [pid 4829] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4829] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4830] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4830] umount2("./file0", MNT_DETACH) = 0 [pid 4830] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4830] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4828] <... futex resumed>) = 0 [pid 4828] exit_group(0 [pid 4829] <... futex resumed>) = ? [pid 4828] <... exit_group resumed>) = ? [pid 4830] <... futex resumed>) = ? [pid 4830] +++ exited with 0 +++ [pid 4829] +++ exited with 0 +++ [pid 4828] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4828, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4831 attached , child_tidptr=0x5555564465d0) = 4831 [pid 4831] set_robust_list(0x5555564465e0, 24) = 0 [pid 4831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4831] setpgid(0, 0) = 0 [pid 4831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4831] write(3, "1000", 4) = 4 [pid 4831] close(3) = 0 [pid 4831] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4831] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4831] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4832], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4832 [pid 4831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4832 attached [pid 4832] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4832] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4831] <... futex resumed>) = 0 [pid 4831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4832] <... futex resumed>) = 1 [pid 4832] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4831] <... futex resumed>) = 0 [pid 4831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4832] <... futex resumed>) = 1 [pid 4832] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4831] <... futex resumed>) = 0 [pid 4831] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4831] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4832] umount2("./file0", MNT_DETACH [pid 4831] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4833], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4833 [pid 4831] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4831] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4833 attached [pid 4833] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4833] umount2("./file0", MNT_DETACH [pid 4832] <... umount2 resumed>) = 0 [pid 4833] <... umount2 resumed>) = 0 [pid 4832] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4833] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4831] <... futex resumed>) = 0 [pid 4831] exit_group(0 [pid 4832] <... futex resumed>) = ? [pid 4831] <... exit_group resumed>) = ? [pid 4833] <... futex resumed>) = ? [pid 4832] +++ exited with 0 +++ [pid 4833] +++ exited with 0 +++ [pid 4831] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4831, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4834 ./strace-static-x86_64: Process 4834 attached [pid 4834] set_robust_list(0x5555564465e0, 24) = 0 [pid 4834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4834] setpgid(0, 0) = 0 [pid 4834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4834] write(3, "1000", 4) = 4 [pid 4834] close(3) = 0 [pid 4834] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4834] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4834] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4835 attached , parent_tid=[4835], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4835 [pid 4835] set_robust_list(0x7fc84e09f9e0, 24 [pid 4834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4835] <... set_robust_list resumed>) = 0 [pid 4835] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4835] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4834] <... futex resumed>) = 0 [pid 4834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4835] <... futex resumed>) = 0 [pid 4835] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4835] <... mount resumed>) = 0 [pid 4835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4834] <... futex resumed>) = 0 [pid 4834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4834] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4835] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4835] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4834] <... futex resumed>) = 0 [pid 4834] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4834] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4834] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4834] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4834] <... clone resumed>, parent_tid=[4836], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4836 [pid 4834] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4834] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4836 attached [pid 4836] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4836] umount2("./file0", MNT_DETACH [pid 4835] umount2("./file0", MNT_DETACH [pid 4836] <... umount2 resumed>) = 0 [pid 4836] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4835] <... umount2 resumed>) = 0 [pid 4834] <... futex resumed>) = 0 [pid 4836] <... futex resumed>) = 1 [pid 4836] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4835] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4835] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4834] exit_group(0) = ? [pid 4835] <... futex resumed>) = ? [pid 4835] +++ exited with 0 +++ [pid 4836] <... futex resumed>) = ? [pid 4836] +++ exited with 0 +++ [pid 4834] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4834, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4837 ./strace-static-x86_64: Process 4837 attached [pid 4837] set_robust_list(0x5555564465e0, 24) = 0 [pid 4837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4837] setpgid(0, 0) = 0 [pid 4837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4837] write(3, "1000", 4) = 4 [pid 4837] close(3) = 0 [pid 4837] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4837] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4837] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4838 attached , parent_tid=[4838], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4838 [pid 4838] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4838] <... futex resumed>) = 0 [pid 4838] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4838] <... futex resumed>) = 0 [pid 4837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4838] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4837] <... futex resumed>) = 0 [pid 4837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4838] <... futex resumed>) = 0 [pid 4838] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4837] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4838] <... mount resumed>) = 0 [pid 4838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4837] <... futex resumed>) = 0 [pid 4837] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4838] <... futex resumed>) = 0 [pid 4838] umount2("./file0", MNT_DETACH [pid 4837] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4838] <... umount2 resumed>) = 0 [pid 4838] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4838] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4837] <... futex resumed>) = 0 [pid 4837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4837] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4837] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4839 attached , parent_tid=[4839], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4839 [pid 4839] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4839] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4837] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4839] <... futex resumed>) = 0 [pid 4839] umount2("./file0", MNT_DETACH [pid 4837] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4839] <... umount2 resumed>) = 0 [pid 4839] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4837] <... futex resumed>) = 0 [pid 4837] exit_group(0 [pid 4838] <... futex resumed>) = ? [pid 4838] +++ exited with 0 +++ [pid 4839] +++ exited with 0 +++ [pid 4837] <... exit_group resumed>) = ? [pid 4837] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4837, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4840 ./strace-static-x86_64: Process 4840 attached [pid 4840] set_robust_list(0x5555564465e0, 24) = 0 [pid 4840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4840] setpgid(0, 0) = 0 [pid 4840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4840] write(3, "1000", 4) = 4 [pid 4840] close(3) = 0 [pid 4840] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4840] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4840] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4841 attached , parent_tid=[4841], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4841 [pid 4840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4841] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4841] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4840] <... futex resumed>) = 0 [pid 4840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4841] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4840] <... futex resumed>) = 0 [pid 4840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4841] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4840] <... futex resumed>) = 0 [pid 4840] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4840] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4840] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4841] umount2("./file0", MNT_DETACH [pid 4840] <... clone resumed>, parent_tid=[4842], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4842 [pid 4840] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4840] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4842 attached [pid 4842] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4842] umount2("./file0", MNT_DETACH) = 0 [pid 4842] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4840] <... futex resumed>) = 0 [pid 4842] <... futex resumed>) = 1 [pid 4842] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4841] <... umount2 resumed>) = 0 [pid 4841] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4841] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4840] exit_group(0) = ? [pid 4842] <... futex resumed>) = ? [pid 4842] +++ exited with 0 +++ [pid 4841] <... futex resumed>) = ? [pid 4841] +++ exited with 0 +++ [pid 4840] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4840, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4843 attached , child_tidptr=0x5555564465d0) = 4843 [pid 4843] set_robust_list(0x5555564465e0, 24) = 0 [pid 4843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4843] setpgid(0, 0) = 0 [pid 4843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4843] write(3, "1000", 4) = 4 [pid 4843] close(3) = 0 [pid 4843] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4843] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4843] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4844], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4844 [pid 4843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4844 attached [pid 4844] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4844] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4844] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4843] <... futex resumed>) = 0 [pid 4844] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4844] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4843] <... futex resumed>) = 0 [pid 4843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4844] <... mount resumed>) = 0 [pid 4844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4843] <... futex resumed>) = 0 [pid 4843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4843] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4844] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4843] <... futex resumed>) = 0 [pid 4843] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4843] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4843] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4843] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4844] umount2("./file0", MNT_DETACH [pid 4843] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4845], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4845 [pid 4844] <... umount2 resumed>) = 0 [pid 4843] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4843] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4845 attached [pid 4845] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4845] umount2("./file0", MNT_DETACH [pid 4844] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4845] <... umount2 resumed>) = 0 [pid 4844] <... futex resumed>) = 0 [pid 4845] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4843] <... futex resumed>) = 0 [pid 4843] exit_group(0) = ? [pid 4845] <... futex resumed>) = ? [pid 4844] +++ exited with 0 +++ [pid 4845] +++ exited with 0 +++ [pid 4843] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4843, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4846 ./strace-static-x86_64: Process 4846 attached [pid 4846] set_robust_list(0x5555564465e0, 24) = 0 [pid 4846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4846] setpgid(0, 0) = 0 [pid 4846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4846] write(3, "1000", 4) = 4 [pid 4846] close(3) = 0 [pid 4846] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4846] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4846] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4847 attached , parent_tid=[4847], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4847 [pid 4846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4847] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4847] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4846] <... futex resumed>) = 0 [pid 4846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4847] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4846] <... futex resumed>) = 0 [pid 4846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4846] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4847] <... futex resumed>) = 0 [pid 4847] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4846] <... futex resumed>) = 0 [pid 4846] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4846] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4846] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4846] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4847] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4848 attached [pid 4846] <... clone resumed>, parent_tid=[4848], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4848 [pid 4848] set_robust_list(0x7fc84e07e9e0, 24 [pid 4846] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4848] <... set_robust_list resumed>) = 0 [pid 4846] <... futex resumed>) = 0 [pid 4848] umount2("./file0", MNT_DETACH [pid 4846] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4848] <... umount2 resumed>) = 0 [pid 4847] <... umount2 resumed>) = 0 [pid 4848] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4847] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4848] <... futex resumed>) = 1 [pid 4846] <... futex resumed>) = 0 [pid 4847] <... futex resumed>) = 0 [pid 4848] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4847] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4846] exit_group(0) = ? [pid 4847] <... futex resumed>) = 231 [pid 4848] <... futex resumed>) = ? [pid 4847] +++ exited with 0 +++ [pid 4848] +++ exited with 0 +++ [pid 4846] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4846, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4849 ./strace-static-x86_64: Process 4849 attached [pid 4849] set_robust_list(0x5555564465e0, 24) = 0 [pid 4849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4849] setpgid(0, 0) = 0 [pid 4849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4849] write(3, "1000", 4) = 4 [pid 4849] close(3) = 0 [pid 4849] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4849] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4849] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4850], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4850 [pid 4849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4850 attached [pid 4850] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4850] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4849] <... futex resumed>) = 0 [pid 4849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4850] <... futex resumed>) = 1 [pid 4850] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4849] <... futex resumed>) = 0 [pid 4849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4849] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4850] <... futex resumed>) = 1 [pid 4850] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4849] <... futex resumed>) = 0 [pid 4849] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4849] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4849] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4849] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4851 attached [pid 4850] <... futex resumed>) = 1 [pid 4851] set_robust_list(0x7fc84e07e9e0, 24 [pid 4850] umount2("./file0", MNT_DETACH [pid 4851] <... set_robust_list resumed>) = 0 [pid 4851] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4849] <... clone resumed>, parent_tid=[4851], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4851 [pid 4849] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4850] <... umount2 resumed>) = 0 [pid 4851] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4850] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4851] umount2("./file0", MNT_DETACH [pid 4850] <... futex resumed>) = 0 [pid 4850] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4849] <... futex resumed>) = 0 [pid 4851] <... umount2 resumed>) = 0 [pid 4849] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4851] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4849] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4851] <... futex resumed>) = 0 [pid 4849] exit_group(0 [pid 4851] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4849] <... exit_group resumed>) = ? [pid 4850] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4851] <... futex resumed>) = ? [pid 4850] +++ exited with 0 +++ [pid 4851] +++ exited with 0 +++ [pid 4849] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4849, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4852 ./strace-static-x86_64: Process 4852 attached [pid 4852] set_robust_list(0x5555564465e0, 24) = 0 [pid 4852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4852] setpgid(0, 0) = 0 [pid 4852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4852] write(3, "1000", 4) = 4 [pid 4852] close(3) = 0 [pid 4852] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4852] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4852] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4853], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4853 ./strace-static-x86_64: Process 4853 attached [pid 4853] set_robust_list(0x7fc84e09f9e0, 24 [pid 4852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4853] <... set_robust_list resumed>) = 0 [pid 4853] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4852] <... futex resumed>) = 0 [pid 4852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4853] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4852] <... futex resumed>) = 0 [pid 4852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4852] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4853] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4852] <... futex resumed>) = 0 [pid 4852] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4852] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4852] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4852] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4853] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4854 attached [pid 4852] <... clone resumed>, parent_tid=[4854], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4854 [pid 4852] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4853] <... umount2 resumed>) = 0 [pid 4852] <... futex resumed>) = 0 [pid 4852] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4853] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4854] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4853] <... futex resumed>) = 0 [pid 4854] umount2("./file0", MNT_DETACH [pid 4853] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4854] <... umount2 resumed>) = 0 [pid 4854] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4852] <... futex resumed>) = 0 [pid 4854] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4852] exit_group(0 [pid 4854] <... futex resumed>) = ? [pid 4853] <... futex resumed>) = ? [pid 4852] <... exit_group resumed>) = ? [pid 4854] +++ exited with 0 +++ [pid 4853] +++ exited with 0 +++ [pid 4852] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4852, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4855 ./strace-static-x86_64: Process 4855 attached [pid 4855] set_robust_list(0x5555564465e0, 24) = 0 [pid 4855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4855] setpgid(0, 0) = 0 [pid 4855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4855] write(3, "1000", 4) = 4 [pid 4855] close(3) = 0 [pid 4855] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4855] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4855] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4856 attached , parent_tid=[4856], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4856 [pid 4856] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4856] <... futex resumed>) = 0 [pid 4856] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4856] <... futex resumed>) = 0 [pid 4855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4856] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4855] <... futex resumed>) = 0 [pid 4855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4855] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4856] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4855] <... futex resumed>) = 0 [pid 4855] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4855] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4855] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4855] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4857], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4857 [pid 4856] umount2("./file0", MNT_DETACH [pid 4855] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4855] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4857 attached [pid 4857] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4857] umount2("./file0", MNT_DETACH) = 0 [pid 4857] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4855] <... futex resumed>) = 0 [pid 4857] <... futex resumed>) = 1 [pid 4857] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4856] <... umount2 resumed>) = 0 [pid 4856] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4856] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4855] exit_group(0) = ? [pid 4856] <... futex resumed>) = ? [pid 4857] <... futex resumed>) = ? [pid 4856] +++ exited with 0 +++ [pid 4857] +++ exited with 0 +++ [pid 4855] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4858 attached , child_tidptr=0x5555564465d0) = 4858 [pid 4858] set_robust_list(0x5555564465e0, 24) = 0 [pid 4858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4858] setpgid(0, 0) = 0 [pid 4858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4858] write(3, "1000", 4) = 4 [pid 4858] close(3) = 0 [pid 4858] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4858] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4858] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4859 attached [pid 4859] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4858] <... clone resumed>, parent_tid=[4859], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4859 [pid 4858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4859] <... futex resumed>) = 0 [pid 4859] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4858] <... futex resumed>) = 0 [pid 4858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4859] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4858] <... futex resumed>) = 0 [pid 4859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4858] <... futex resumed>) = 0 [pid 4859] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4858] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4859] <... mount resumed>) = 0 [pid 4859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4858] <... futex resumed>) = 0 [pid 4859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4858] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4858] <... futex resumed>) = 0 [pid 4859] umount2("./file0", MNT_DETACH [pid 4858] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4859] <... umount2 resumed>) = 0 [pid 4858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4859] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4858] <... mmap resumed>) = 0x7fc84e05e000 [pid 4859] <... futex resumed>) = 0 [pid 4858] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4859] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4858] <... mprotect resumed>) = 0 [pid 4858] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4860 attached , parent_tid=[4860], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4860 [pid 4858] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4858] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4860] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4860] umount2("./file0", MNT_DETACH) = 0 [pid 4860] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4858] <... futex resumed>) = 0 [pid 4858] exit_group(0) = ? [pid 4859] <... futex resumed>) = ? [pid 4859] +++ exited with 0 +++ [pid 4860] +++ exited with 0 +++ [pid 4858] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4858, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4861 attached , child_tidptr=0x5555564465d0) = 4861 [pid 4861] set_robust_list(0x5555564465e0, 24) = 0 [pid 4861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4861] setpgid(0, 0) = 0 [pid 4861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4861] write(3, "1000", 4) = 4 [pid 4861] close(3) = 0 [pid 4861] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4861] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4861] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4862 attached , parent_tid=[4862], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4862 [pid 4861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4862] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4862] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4861] <... futex resumed>) = 0 [pid 4862] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4861] <... futex resumed>) = 0 [pid 4862] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4862] <... mount resumed>) = 0 [pid 4862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4861] <... futex resumed>) = 0 [pid 4861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4861] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4862] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4861] <... futex resumed>) = 0 [pid 4861] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4861] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4861] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4861] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4862] umount2("./file0", MNT_DETACH [pid 4861] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4863], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4863 [pid 4861] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4862] <... umount2 resumed>) = 0 [pid 4861] <... futex resumed>) = 0 [pid 4861] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4863 attached [pid 4862] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4863] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4863] umount2("./file0", MNT_DETACH [pid 4862] <... futex resumed>) = 0 [pid 4863] <... umount2 resumed>) = 0 [pid 4862] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4863] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4861] <... futex resumed>) = 0 [pid 4863] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4861] exit_group(0 [pid 4863] <... futex resumed>) = ? [pid 4861] <... exit_group resumed>) = ? [pid 4863] +++ exited with 0 +++ [pid 4862] <... futex resumed>) = ? [pid 4862] +++ exited with 0 +++ [pid 4861] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4861, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4864 ./strace-static-x86_64: Process 4864 attached [pid 4864] set_robust_list(0x5555564465e0, 24) = 0 [pid 4864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4864] setpgid(0, 0) = 0 [pid 4864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4864] write(3, "1000", 4) = 4 [pid 4864] close(3) = 0 [pid 4864] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4864] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4864] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4865 attached , parent_tid=[4865], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4865 [pid 4865] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4865] <... futex resumed>) = 0 [pid 4864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4865] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4864] <... futex resumed>) = 0 [pid 4864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4865] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4864] <... futex resumed>) = 0 [pid 4864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4865] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4864] <... futex resumed>) = 0 [pid 4864] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4865] <... mount resumed>) = 0 [pid 4865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4864] <... futex resumed>) = 0 [pid 4864] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4864] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4864] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4864] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4865] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4866 attached [pid 4866] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4866] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4865] <... umount2 resumed>) = 0 [pid 4864] <... clone resumed>, parent_tid=[4866], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4866 [pid 4865] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4864] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4865] <... futex resumed>) = 0 [pid 4864] <... futex resumed>) = 1 [pid 4866] <... futex resumed>) = 0 [pid 4866] umount2("./file0", MNT_DETACH [pid 4865] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4864] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4866] <... umount2 resumed>) = 0 [pid 4866] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4864] <... futex resumed>) = 0 [pid 4864] exit_group(0) = ? [pid 4865] <... futex resumed>) = ? [pid 4865] +++ exited with 0 +++ [pid 4866] +++ exited with 0 +++ [pid 4864] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4864, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4867 attached , child_tidptr=0x5555564465d0) = 4867 [pid 4867] set_robust_list(0x5555564465e0, 24) = 0 [pid 4867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4867] setpgid(0, 0) = 0 [pid 4867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4867] write(3, "1000", 4) = 4 [pid 4867] close(3) = 0 [pid 4867] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4867] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4867] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4868 attached , parent_tid=[4868], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4868 [pid 4867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4868] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4868] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4867] <... futex resumed>) = 0 [pid 4867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4868] <... futex resumed>) = 0 [pid 4867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4868] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4867] <... futex resumed>) = 0 [pid 4867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4868] <... futex resumed>) = 0 [pid 4868] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4867] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4868] <... futex resumed>) = 0 [pid 4868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4867] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4868] <... futex resumed>) = 0 [pid 4868] umount2("./file0", MNT_DETACH) = 0 [pid 4867] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4868] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4868] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4867] <... futex resumed>) = 0 [pid 4867] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4867] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4867] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4869 attached [pid 4869] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4869] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4867] <... clone resumed>, parent_tid=[4869], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4869 [pid 4867] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4869] <... futex resumed>) = 0 [pid 4869] umount2("./file0", MNT_DETACH) = 0 [pid 4869] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4869] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4867] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4867] exit_group(0 [pid 4868] <... futex resumed>) = ? [pid 4867] <... exit_group resumed>) = ? [pid 4868] +++ exited with 0 +++ [pid 4869] <... futex resumed>) = ? [pid 4869] +++ exited with 0 +++ [pid 4867] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4867, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4870 attached , child_tidptr=0x5555564465d0) = 4870 [pid 4870] set_robust_list(0x5555564465e0, 24) = 0 [pid 4870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4870] setpgid(0, 0) = 0 [pid 4870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4870] write(3, "1000", 4) = 4 [pid 4870] close(3) = 0 [pid 4870] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4870] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4870] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4871 attached , parent_tid=[4871], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4871 [pid 4871] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4871] <... futex resumed>) = 0 [pid 4870] <... futex resumed>) = 1 [pid 4871] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4871] <... futex resumed>) = 0 [pid 4871] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4871] <... futex resumed>) = 0 [pid 4871] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4870] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4871] <... mount resumed>) = 0 [pid 4871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4870] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4871] <... futex resumed>) = 0 [pid 4871] umount2("./file0", MNT_DETACH [pid 4870] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4871] <... umount2 resumed>) = 0 [pid 4871] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4871] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] <... futex resumed>) = 0 [pid 4870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4870] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4870] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4872 attached [pid 4872] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4872] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] <... clone resumed>, parent_tid=[4872], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4872 [pid 4870] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4872] <... futex resumed>) = 0 [pid 4870] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4872] umount2("./file0", MNT_DETACH) = 0 [pid 4872] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4870] <... futex resumed>) = 0 [pid 4872] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4870] exit_group(0 [pid 4871] <... futex resumed>) = ? [pid 4870] <... exit_group resumed>) = ? [pid 4872] <... futex resumed>) = ? [pid 4871] +++ exited with 0 +++ [pid 4872] +++ exited with 0 +++ [pid 4870] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4870, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4873 ./strace-static-x86_64: Process 4873 attached [pid 4873] set_robust_list(0x5555564465e0, 24) = 0 [pid 4873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4873] setpgid(0, 0) = 0 [pid 4873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4873] write(3, "1000", 4) = 4 [pid 4873] close(3) = 0 [pid 4873] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4873] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4873] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4874 attached [pid 4874] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4873] <... clone resumed>, parent_tid=[4874], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4874 [pid 4873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4874] <... futex resumed>) = 0 [pid 4874] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4873] <... futex resumed>) = 0 [pid 4873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4874] <... futex resumed>) = 0 [pid 4874] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4874] <... mount resumed>) = 0 [pid 4874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4873] <... futex resumed>) = 0 [pid 4873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4874] <... futex resumed>) = 0 [pid 4874] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4873] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4874] <... mount resumed>) = 0 [pid 4874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4873] <... futex resumed>) = 0 [pid 4874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4873] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4874] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4873] <... futex resumed>) = 0 [pid 4874] umount2("./file0", MNT_DETACH [pid 4873] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4874] <... umount2 resumed>) = 0 [pid 4873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4874] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4873] <... mmap resumed>) = 0x7fc84e05e000 [pid 4874] <... futex resumed>) = 0 [pid 4873] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4874] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4873] <... mprotect resumed>) = 0 [pid 4873] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4875 attached , parent_tid=[4875], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4875 [pid 4875] set_robust_list(0x7fc84e07e9e0, 24 [pid 4873] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4875] <... set_robust_list resumed>) = 0 [pid 4873] <... futex resumed>) = 0 [pid 4875] umount2("./file0", MNT_DETACH [pid 4873] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4875] <... umount2 resumed>) = 0 [pid 4875] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4873] <... futex resumed>) = 0 [pid 4875] <... futex resumed>) = 1 [pid 4875] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4873] exit_group(0) = ? [pid 4874] <... futex resumed>) = 231 [pid 4875] <... futex resumed>) = ? [pid 4874] +++ exited with 0 +++ [pid 4875] +++ exited with 0 +++ [pid 4873] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4873, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4876 ./strace-static-x86_64: Process 4876 attached [pid 4876] set_robust_list(0x5555564465e0, 24) = 0 [pid 4876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4876] setpgid(0, 0) = 0 [pid 4876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4876] write(3, "1000", 4) = 4 [pid 4876] close(3) = 0 [pid 4876] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4876] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4876] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4877], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4877 [pid 4876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4877 attached [pid 4877] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4877] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4877] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4876] <... futex resumed>) = 0 [pid 4876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4877] <... futex resumed>) = 0 [pid 4876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4877] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4876] <... futex resumed>) = 0 [pid 4876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4876] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4877] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4876] <... futex resumed>) = 0 [pid 4876] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4876] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4876] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4877] umount2("./file0", MNT_DETACH [pid 4876] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4878], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4878 [pid 4876] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4876] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4878 attached [pid 4878] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4878] umount2("./file0", MNT_DETACH [pid 4877] <... umount2 resumed>) = 0 [pid 4877] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4878] <... umount2 resumed>) = 0 [pid 4877] <... futex resumed>) = 0 [pid 4878] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4877] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4876] <... futex resumed>) = 0 [pid 4878] <... futex resumed>) = 1 [pid 4876] exit_group(0 [pid 4878] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 4876] <... exit_group resumed>) = ? [pid 4877] <... futex resumed>) = ? [pid 4878] +++ exited with 0 +++ [pid 4877] +++ exited with 0 +++ [pid 4876] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4876, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4879 attached , child_tidptr=0x5555564465d0) = 4879 [pid 4879] set_robust_list(0x5555564465e0, 24) = 0 [pid 4879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4879] setpgid(0, 0) = 0 [pid 4879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4879] write(3, "1000", 4) = 4 [pid 4879] close(3) = 0 [pid 4879] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4879] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4879] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4880], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4880 [pid 4879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4880 attached [pid 4880] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4880] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4879] <... futex resumed>) = 0 [pid 4879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4880] <... futex resumed>) = 1 [pid 4880] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4879] <... futex resumed>) = 0 [pid 4879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4879] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4880] <... futex resumed>) = 1 [pid 4880] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4879] <... futex resumed>) = 0 [pid 4879] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4879] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4879] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4880] <... futex resumed>) = 1 [pid 4879] <... mprotect resumed>) = 0 [pid 4880] umount2("./file0", MNT_DETACH [pid 4879] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4881 attached , parent_tid=[4881], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4881 [pid 4881] set_robust_list(0x7fc84e07e9e0, 24 [pid 4880] <... umount2 resumed>) = 0 [pid 4879] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4881] <... set_robust_list resumed>) = 0 [pid 4880] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4881] umount2("./file0", MNT_DETACH [pid 4879] <... futex resumed>) = 0 [pid 4880] <... futex resumed>) = 0 [pid 4879] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4880] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4881] <... umount2 resumed>) = 0 [pid 4881] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4879] <... futex resumed>) = 0 [pid 4879] exit_group(0) = ? [pid 4881] <... futex resumed>) = 231 [pid 4880] <... futex resumed>) = ? [pid 4880] +++ exited with 0 +++ [pid 4881] +++ exited with 0 +++ [pid 4879] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4882 ./strace-static-x86_64: Process 4882 attached [pid 4882] set_robust_list(0x5555564465e0, 24) = 0 [pid 4882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4882] setpgid(0, 0) = 0 [pid 4882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4882] write(3, "1000", 4) = 4 [pid 4882] close(3) = 0 [pid 4882] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4882] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4882] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4883 attached , parent_tid=[4883], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4883 [pid 4883] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4883] <... futex resumed>) = 0 [pid 4883] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4882] <... futex resumed>) = 0 [pid 4883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4882] <... futex resumed>) = 0 [pid 4883] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4883] <... mount resumed>) = 0 [pid 4883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4882] <... futex resumed>) = 0 [pid 4882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4882] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4883] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4882] <... futex resumed>) = 0 [pid 4882] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4882] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4882] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4882] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4884], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4884 [pid 4882] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4883] umount2("./file0", MNT_DETACH [pid 4882] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4884 attached [pid 4884] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4884] umount2("./file0", MNT_DETACH) = 0 [pid 4884] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4883] <... umount2 resumed>) = 0 [pid 4883] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4883] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4882] <... futex resumed>) = 0 [pid 4882] exit_group(0) = ? [pid 4883] <... futex resumed>) = ? [pid 4883] +++ exited with 0 +++ [pid 4884] <... futex resumed>) = ? [pid 4884] +++ exited with 0 +++ [pid 4882] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4882, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4885 ./strace-static-x86_64: Process 4885 attached [pid 4885] set_robust_list(0x5555564465e0, 24) = 0 [pid 4885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4885] setpgid(0, 0) = 0 [pid 4885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4885] write(3, "1000", 4) = 4 [pid 4885] close(3) = 0 [pid 4885] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4885] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4885] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4886 attached , parent_tid=[4886], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4886 [pid 4886] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4886] <... futex resumed>) = 0 [pid 4885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4886] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4885] <... futex resumed>) = 0 [pid 4886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4886] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4885] <... futex resumed>) = 0 [pid 4886] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4886] <... mount resumed>) = 0 [pid 4886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4885] <... futex resumed>) = 0 [pid 4885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4885] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4886] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4885] <... futex resumed>) = 0 [pid 4885] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4885] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4885] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4885] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4886] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 4887 attached [pid 4887] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4887] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4886] <... umount2 resumed>) = 0 [pid 4885] <... clone resumed>, parent_tid=[4887], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4887 [pid 4886] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4885] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4886] <... futex resumed>) = 0 [pid 4885] <... futex resumed>) = 1 [pid 4887] <... futex resumed>) = 0 [pid 4887] umount2("./file0", MNT_DETACH [pid 4885] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4886] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4887] <... umount2 resumed>) = 0 [pid 4887] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4887] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4885] exit_group(0 [pid 4886] <... futex resumed>) = ? [pid 4885] <... exit_group resumed>) = ? [pid 4887] <... futex resumed>) = ? [pid 4887] +++ exited with 0 +++ [pid 4886] +++ exited with 0 +++ [pid 4885] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4885, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4888 attached , child_tidptr=0x5555564465d0) = 4888 [pid 4888] set_robust_list(0x5555564465e0, 24) = 0 [pid 4888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4888] setpgid(0, 0) = 0 [pid 4888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4888] write(3, "1000", 4) = 4 [pid 4888] close(3) = 0 [pid 4888] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4888] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4888] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4889 attached , parent_tid=[4889], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4889 [pid 4888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4889] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4889] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4888] <... futex resumed>) = 0 [pid 4888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4889] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4888] <... futex resumed>) = 0 [pid 4888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4888] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4889] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4888] <... futex resumed>) = 0 [pid 4889] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4888] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4888] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4889] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4889] umount2("./file0", MNT_DETACH [pid 4888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4888] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4888] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4890], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4890 [pid 4888] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4889] <... umount2 resumed>) = 0 [pid 4888] <... futex resumed>) = 0 [pid 4888] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4889] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4890 attached [pid 4890] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4890] umount2("./file0", MNT_DETACH) = 0 [pid 4890] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4889] <... futex resumed>) = 0 [pid 4888] <... futex resumed>) = 0 [pid 4890] <... futex resumed>) = 1 [pid 4890] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4889] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4888] exit_group(0) = ? [pid 4890] <... futex resumed>) = 231 [pid 4889] <... futex resumed>) = ? [pid 4889] +++ exited with 0 +++ [pid 4890] +++ exited with 0 +++ [pid 4888] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4888, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4891 ./strace-static-x86_64: Process 4891 attached [pid 4891] set_robust_list(0x5555564465e0, 24) = 0 [pid 4891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4891] setpgid(0, 0) = 0 [pid 4891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4891] write(3, "1000", 4) = 4 [pid 4891] close(3) = 0 [pid 4891] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4891] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4891] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4892], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4892 [pid 4891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4892 attached [pid 4892] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4892] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4891] <... futex resumed>) = 0 [pid 4891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4892] <... futex resumed>) = 1 [pid 4892] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4891] <... futex resumed>) = 0 [pid 4892] <... futex resumed>) = 1 [pid 4891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4892] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4891] <... futex resumed>) = 0 [pid 4891] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4892] <... mount resumed>) = 0 [pid 4892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4891] <... futex resumed>) = 0 [pid 4892] <... futex resumed>) = 1 [pid 4891] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4892] umount2("./file0", MNT_DETACH [pid 4891] <... futex resumed>) = 0 [pid 4891] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4891] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4892] <... umount2 resumed>) = 0 [pid 4891] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4892] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 4893 attached ) = 0 [pid 4893] set_robust_list(0x7fc84e07e9e0, 24 [pid 4892] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4893] <... set_robust_list resumed>) = 0 [pid 4893] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4891] <... clone resumed>, parent_tid=[4893], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4893 [pid 4891] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4893] <... futex resumed>) = 0 [pid 4891] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4893] umount2("./file0", MNT_DETACH) = 0 [pid 4893] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4891] <... futex resumed>) = 0 [pid 4891] exit_group(0) = ? [pid 4893] <... futex resumed>) = 231 [pid 4892] <... futex resumed>) = ? [pid 4892] +++ exited with 0 +++ [pid 4893] +++ exited with 0 +++ [pid 4891] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4891, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4894 ./strace-static-x86_64: Process 4894 attached [pid 4894] set_robust_list(0x5555564465e0, 24) = 0 [pid 4894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4894] setpgid(0, 0) = 0 [pid 4894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4894] write(3, "1000", 4) = 4 [pid 4894] close(3) = 0 [pid 4894] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4894] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4894] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4895], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4895 [pid 4894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4895 attached [pid 4895] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4895] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4894] <... futex resumed>) = 0 [pid 4894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4895] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4894] <... futex resumed>) = 0 [pid 4894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4895] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4894] <... futex resumed>) = 0 [pid 4894] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4894] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4894] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4895] umount2("./file0", MNT_DETACH [pid 4894] <... clone resumed>, parent_tid=[4896], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4896 [pid 4894] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4894] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4896 attached [pid 4896] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4896] umount2("./file0", MNT_DETACH [pid 4895] <... umount2 resumed>) = 0 [pid 4896] <... umount2 resumed>) = 0 [pid 4896] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4894] <... futex resumed>) = 0 [pid 4895] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4894] exit_group(0) = ? [pid 4895] <... futex resumed>) = ? [pid 4896] <... futex resumed>) = ? [pid 4895] +++ exited with 0 +++ [pid 4896] +++ exited with 0 +++ [pid 4894] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4894, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4897 attached , child_tidptr=0x5555564465d0) = 4897 [pid 4897] set_robust_list(0x5555564465e0, 24) = 0 [pid 4897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4897] setpgid(0, 0) = 0 [pid 4897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4897] write(3, "1000", 4) = 4 [pid 4897] close(3) = 0 [pid 4897] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4897] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4897] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4897] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4898 attached , parent_tid=[4898], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4898 [pid 4897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4898] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4898] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4897] <... futex resumed>) = 0 [pid 4897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4898] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4897] <... futex resumed>) = 0 [pid 4897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4898] <... mount resumed>) = 0 [pid 4898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4897] <... futex resumed>) = 0 [pid 4897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4897] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4898] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4897] <... futex resumed>) = 0 [pid 4897] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4897] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4897] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4897] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4897] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4898] umount2("./file0", MNT_DETACH [pid 4897] <... clone resumed>, parent_tid=[4899], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4899 ./strace-static-x86_64: Process 4899 attached [pid 4899] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4899] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4897] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4898] <... umount2 resumed>) = 0 [pid 4897] <... futex resumed>) = 1 [pid 4897] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4899] <... futex resumed>) = 0 [pid 4899] umount2("./file0", MNT_DETACH [pid 4898] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4899] <... umount2 resumed>) = 0 [pid 4899] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4897] <... futex resumed>) = 0 [pid 4897] exit_group(0) = ? [pid 4899] +++ exited with 0 +++ [pid 4898] <... futex resumed>) = ? [pid 4898] +++ exited with 0 +++ [pid 4897] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4897, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4900 ./strace-static-x86_64: Process 4900 attached [pid 4900] set_robust_list(0x5555564465e0, 24) = 0 [pid 4900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4900] setpgid(0, 0) = 0 [pid 4900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4900] write(3, "1000", 4) = 4 [pid 4900] close(3) = 0 [pid 4900] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4900] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4900] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4901 attached , parent_tid=[4901], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4901 [pid 4900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4901] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4901] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4900] <... futex resumed>) = 0 [pid 4900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4901] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4900] <... futex resumed>) = 0 [pid 4900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4901] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4900] <... futex resumed>) = 0 [pid 4900] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4900] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4900] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4901] umount2("./file0", MNT_DETACH [pid 4900] <... clone resumed>, parent_tid=[4902], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4902 [pid 4900] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4900] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4902 attached [pid 4902] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4902] umount2("./file0", MNT_DETACH [pid 4901] <... umount2 resumed>) = 0 [pid 4902] <... umount2 resumed>) = 0 [pid 4902] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4900] <... futex resumed>) = 0 [pid 4902] <... futex resumed>) = 1 [pid 4901] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4902] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4901] <... futex resumed>) = 0 [pid 4901] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4900] exit_group(0) = ? [pid 4902] <... futex resumed>) = ? [pid 4901] <... futex resumed>) = ? [pid 4901] +++ exited with 0 +++ [pid 4902] +++ exited with 0 +++ [pid 4900] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4900, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4903 attached , child_tidptr=0x5555564465d0) = 4903 [pid 4903] set_robust_list(0x5555564465e0, 24) = 0 [pid 4903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4903] setpgid(0, 0) = 0 [pid 4903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4903] write(3, "1000", 4) = 4 [pid 4903] close(3) = 0 [pid 4903] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4903] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4903] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4904 attached , parent_tid=[4904], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4904 [pid 4904] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4904] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] <... futex resumed>) = 0 [pid 4903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4904] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4903] <... futex resumed>) = 0 [pid 4903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4904] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4903] <... futex resumed>) = 0 [pid 4903] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4903] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4903] <... mprotect resumed>) = 0 [pid 4903] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4905], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4905 [pid 4904] umount2("./file0", MNT_DETACH [pid 4903] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4903] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4905 attached [pid 4905] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4905] umount2("./file0", MNT_DETACH) = 0 [pid 4905] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4903] <... futex resumed>) = 0 [pid 4905] <... futex resumed>) = 1 [pid 4905] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4904] <... umount2 resumed>) = 0 [pid 4904] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4904] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4903] exit_group(0) = ? [pid 4905] <... futex resumed>) = ? [pid 4905] +++ exited with 0 +++ [pid 4904] <... futex resumed>) = ? [pid 4904] +++ exited with 0 +++ [pid 4903] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4903, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4906 attached , child_tidptr=0x5555564465d0) = 4906 [pid 4906] set_robust_list(0x5555564465e0, 24) = 0 [pid 4906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4906] setpgid(0, 0) = 0 [pid 4906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4906] write(3, "1000", 4) = 4 [pid 4906] close(3) = 0 [pid 4906] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4906] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4906] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4907 attached , parent_tid=[4907], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4907 [pid 4907] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4906] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4907] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4906] <... futex resumed>) = 0 [pid 4907] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4906] <... futex resumed>) = 0 [pid 4907] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4906] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4907] <... mount resumed>) = 0 [pid 4907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4906] <... futex resumed>) = 0 [pid 4907] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4906] <... futex resumed>) = 0 [pid 4907] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4906] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4907] <... mount resumed>) = 0 [pid 4907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4906] <... futex resumed>) = 0 [pid 4907] umount2("./file0", MNT_DETACH [pid 4906] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4906] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4907] <... umount2 resumed>) = 0 [pid 4906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4907] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4907] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4906] <... mmap resumed>) = 0x7fc84e05e000 [pid 4906] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4906] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4908], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4908 [pid 4906] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4906] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4908 attached [pid 4908] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4908] umount2("./file0", MNT_DETACH) = 0 [pid 4908] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4906] <... futex resumed>) = 0 [pid 4908] <... futex resumed>) = 1 [pid 4906] exit_group(0) = ? [pid 4907] <... futex resumed>) = 231 [pid 4907] +++ exited with 0 +++ [pid 4908] +++ exited with 0 +++ [pid 4906] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4906, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4909 attached , child_tidptr=0x5555564465d0) = 4909 [pid 4909] set_robust_list(0x5555564465e0, 24) = 0 [pid 4909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4909] setpgid(0, 0) = 0 [pid 4909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4909] write(3, "1000", 4) = 4 [pid 4909] close(3) = 0 [pid 4909] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4909] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4909] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4909] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4910 attached , parent_tid=[4910], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4910 [pid 4909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4909] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4910] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4910] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4909] <... futex resumed>) = 0 [pid 4909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4909] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4910] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4909] <... futex resumed>) = 0 [pid 4909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4909] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4910] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4909] <... futex resumed>) = 0 [pid 4909] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4909] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4909] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4909] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4909] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4910] umount2("./file0", MNT_DETACH [pid 4909] <... clone resumed>, parent_tid=[4911], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4911 [pid 4909] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4910] <... umount2 resumed>) = 0 [pid 4909] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4911 attached [pid 4911] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4911] umount2("./file0", MNT_DETACH [pid 4910] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4911] <... umount2 resumed>) = 0 [pid 4911] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4909] <... futex resumed>) = 0 [pid 4909] exit_group(0) = ? [pid 4911] <... futex resumed>) = ? [pid 4910] <... futex resumed>) = ? [pid 4910] +++ exited with 0 +++ [pid 4911] +++ exited with 0 +++ [pid 4909] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4909, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4912 attached [pid 4912] set_robust_list(0x5555564465e0, 24 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 4912 [pid 4912] <... set_robust_list resumed>) = 0 [pid 4912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4912] setpgid(0, 0) = 0 [pid 4912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4912] write(3, "1000", 4) = 4 [pid 4912] close(3) = 0 [pid 4912] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4912] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4912] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4913], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4913 [pid 4912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4912] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4913 attached [pid 4913] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4913] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4912] <... futex resumed>) = 0 [pid 4912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4912] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4913] <... futex resumed>) = 1 [pid 4913] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4912] <... futex resumed>) = 0 [pid 4912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4912] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4913] <... futex resumed>) = 1 [pid 4913] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4912] <... futex resumed>) = 0 [pid 4913] <... futex resumed>) = 1 [pid 4912] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4913] umount2("./file0", MNT_DETACH [pid 4912] <... futex resumed>) = 0 [pid 4912] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4913] <... umount2 resumed>) = 0 [pid 4912] <... futex resumed>) = 0 [pid 4913] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4912] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4912] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4913] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4914 attached [pid 4912] <... clone resumed>, parent_tid=[4914], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4914 [pid 4912] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4912] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4914] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4914] umount2("./file0", MNT_DETACH) = 0 [pid 4913] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4914] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4912] <... futex resumed>) = 0 [pid 4912] exit_group(0 [pid 4913] <... futex resumed>) = ? [pid 4912] <... exit_group resumed>) = ? [pid 4913] +++ exited with 0 +++ [pid 4914] <... futex resumed>) = ? [pid 4914] +++ exited with 0 +++ [pid 4912] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4915 attached , child_tidptr=0x5555564465d0) = 4915 [pid 4915] set_robust_list(0x5555564465e0, 24) = 0 [pid 4915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4915] setpgid(0, 0) = 0 [pid 4915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4915] write(3, "1000", 4) = 4 [pid 4915] close(3) = 0 [pid 4915] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4915] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4915] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4915] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4916 attached , parent_tid=[4916], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4916 [pid 4915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4915] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4916] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4916] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4915] <... futex resumed>) = 0 [pid 4915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4915] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4916] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4915] <... futex resumed>) = 0 [pid 4915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4915] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4916] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4915] <... futex resumed>) = 0 [pid 4915] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4916] umount2("./file0", MNT_DETACH [pid 4915] <... futex resumed>) = 0 [pid 4915] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4915] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4915] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4915] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4916] <... umount2 resumed>) = 0 [pid 4915] <... clone resumed>, parent_tid=[4917], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4917 [pid 4915] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4915] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4917 attached [pid 4917] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4917] umount2("./file0", MNT_DETACH [pid 4916] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4917] <... umount2 resumed>) = 0 [pid 4916] <... futex resumed>) = 0 [pid 4917] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4915] <... futex resumed>) = 0 [pid 4915] exit_group(0 [pid 4916] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4915] <... exit_group resumed>) = ? [pid 4916] <... futex resumed>) = -1 (errno 18446744073709551555) [pid 4917] <... futex resumed>) = ? [pid 4917] +++ exited with 0 +++ [pid 4916] +++ exited with 0 +++ [pid 4915] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4915, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4918 ./strace-static-x86_64: Process 4918 attached [pid 4918] set_robust_list(0x5555564465e0, 24) = 0 [pid 4918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4918] setpgid(0, 0) = 0 [pid 4918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4918] write(3, "1000", 4) = 4 [pid 4918] close(3) = 0 [pid 4918] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4918] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4918] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4919], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4919 [pid 4918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4918] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4919 attached [pid 4919] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4919] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4918] <... futex resumed>) = 0 [pid 4919] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4918] <... futex resumed>) = 0 [pid 4919] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4918] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4919] <... mount resumed>) = 0 [pid 4919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4918] <... futex resumed>) = 0 [pid 4919] <... futex resumed>) = 1 [pid 4918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4919] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4918] <... futex resumed>) = 0 [pid 4918] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4919] <... mount resumed>) = 0 [pid 4919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4918] <... futex resumed>) = 0 [pid 4918] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4918] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4918] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4918] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4920], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4920 [pid 4918] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4918] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4920 attached [pid 4920] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4919] umount2("./file0", MNT_DETACH [pid 4920] umount2("./file0", MNT_DETACH [pid 4919] <... umount2 resumed>) = 0 [pid 4920] <... umount2 resumed>) = 0 [pid 4919] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4920] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4918] <... futex resumed>) = 0 [pid 4918] exit_group(0) = ? [pid 4920] <... futex resumed>) = ? [pid 4920] +++ exited with 0 +++ [pid 4919] <... futex resumed>) = ? [pid 4919] +++ exited with 0 +++ [pid 4918] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4918, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4921 attached , child_tidptr=0x5555564465d0) = 4921 [pid 4921] set_robust_list(0x5555564465e0, 24) = 0 [pid 4921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4921] setpgid(0, 0) = 0 [pid 4921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4921] write(3, "1000", 4) = 4 [pid 4921] close(3) = 0 [pid 4921] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4921] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4921] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4921] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4922 attached , parent_tid=[4922], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4922 [pid 4922] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4922] <... futex resumed>) = 0 [pid 4921] <... futex resumed>) = 1 [pid 4921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4922] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4922] <... futex resumed>) = 0 [pid 4922] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4922] <... mount resumed>) = 0 [pid 4922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4922] <... futex resumed>) = 0 [pid 4922] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4921] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4922] <... mount resumed>) = 0 [pid 4922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4921] <... futex resumed>) = 0 [pid 4921] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4921] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4921] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4921] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4921] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4923 attached , parent_tid=[4923], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4923 [pid 4923] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4921] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4923] umount2("./file0", MNT_DETACH [pid 4921] <... futex resumed>) = 0 [pid 4921] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4923] <... umount2 resumed>) = 0 [pid 4922] umount2("./file0", MNT_DETACH [pid 4923] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4922] <... umount2 resumed>) = 0 [pid 4921] <... futex resumed>) = 0 [pid 4922] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4922] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4923] <... futex resumed>) = 1 [pid 4923] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4921] exit_group(0) = ? [pid 4922] <... futex resumed>) = ? [pid 4922] +++ exited with 0 +++ [pid 4923] <... futex resumed>) = ? [pid 4923] +++ exited with 0 +++ [pid 4921] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4921, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4924 attached , child_tidptr=0x5555564465d0) = 4924 [pid 4924] set_robust_list(0x5555564465e0, 24) = 0 [pid 4924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4924] setpgid(0, 0) = 0 [pid 4924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4924] write(3, "1000", 4) = 4 [pid 4924] close(3) = 0 [pid 4924] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4924] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4924] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4925], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4925 [pid 4924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4925 attached [pid 4925] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4925] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4924] <... futex resumed>) = 0 [pid 4925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4925] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4925] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4924] <... futex resumed>) = 0 [pid 4925] <... mount resumed>) = 0 [pid 4924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4924] <... futex resumed>) = 0 [pid 4924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4924] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4925] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4925] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4924] <... futex resumed>) = 0 [pid 4924] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4924] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4924] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4924] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4926], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4926 [pid 4924] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4924] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4926 attached [pid 4926] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4926] umount2("./file0", MNT_DETACH [pid 4925] umount2("./file0", MNT_DETACH [pid 4926] <... umount2 resumed>) = 0 [pid 4926] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4924] <... futex resumed>) = 0 [pid 4926] <... futex resumed>) = 1 [pid 4926] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4925] <... umount2 resumed>) = 0 [pid 4925] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4925] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4924] exit_group(0) = ? [pid 4926] <... futex resumed>) = ? [pid 4925] <... futex resumed>) = ? [pid 4926] +++ exited with 0 +++ [pid 4925] +++ exited with 0 +++ [pid 4924] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4927 attached , child_tidptr=0x5555564465d0) = 4927 [pid 4927] set_robust_list(0x5555564465e0, 24) = 0 [pid 4927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4927] setpgid(0, 0) = 0 [pid 4927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4927] write(3, "1000", 4) = 4 [pid 4927] close(3) = 0 [pid 4927] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4927] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4927] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4928 attached , parent_tid=[4928], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4928 [pid 4927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4928] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4928] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4927] <... futex resumed>) = 0 [pid 4928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 4927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4928] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4927] <... futex resumed>) = 0 [pid 4927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4928] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4927] <... futex resumed>) = 0 [pid 4927] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4928] umount2("./file0", MNT_DETACH [pid 4927] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4927] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4929], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4929 [pid 4927] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4927] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4929 attached [pid 4929] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4929] umount2("./file0", MNT_DETACH) = 0 [pid 4929] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4927] <... futex resumed>) = 0 [pid 4929] <... futex resumed>) = 1 [pid 4929] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4928] <... umount2 resumed>) = 0 [pid 4928] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4928] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4927] exit_group(0 [pid 4928] <... futex resumed>) = ? [pid 4928] +++ exited with 0 +++ [pid 4927] <... exit_group resumed>) = ? [pid 4929] <... futex resumed>) = ? [pid 4929] +++ exited with 0 +++ [pid 4927] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4930 ./strace-static-x86_64: Process 4930 attached [pid 4930] set_robust_list(0x5555564465e0, 24) = 0 [pid 4930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4930] setpgid(0, 0) = 0 [pid 4930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4930] write(3, "1000", 4) = 4 [pid 4930] close(3) = 0 [pid 4930] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4930] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4930] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4931], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4931 ./strace-static-x86_64: Process 4931 attached [pid 4931] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4931] <... futex resumed>) = 0 [pid 4931] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4931] <... futex resumed>) = 0 [pid 4931] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4931] <... mount resumed>) = 0 [pid 4931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4930] <... futex resumed>) = 0 [pid 4930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4930] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4931] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4930] <... futex resumed>) = 0 [pid 4931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4930] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4931] <... futex resumed>) = 0 [pid 4931] umount2("./file0", MNT_DETACH [pid 4930] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4931] <... umount2 resumed>) = 0 [pid 4931] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4931] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4930] <... futex resumed>) = 0 [pid 4930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4930] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4930] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4932 attached , parent_tid=[4932], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4932 [pid 4932] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4932] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4930] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4932] <... futex resumed>) = 0 [pid 4932] umount2("./file0", MNT_DETACH [pid 4930] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4932] <... umount2 resumed>) = 0 [pid 4932] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4932] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4930] exit_group(0) = ? [pid 4931] <... futex resumed>) = ? [pid 4931] +++ exited with 0 +++ [pid 4932] <... futex resumed>) = ? [pid 4932] +++ exited with 0 +++ [pid 4930] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4930, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4933 ./strace-static-x86_64: Process 4933 attached [pid 4933] set_robust_list(0x5555564465e0, 24) = 0 [pid 4933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4933] setpgid(0, 0) = 0 [pid 4933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4933] write(3, "1000", 4) = 4 [pid 4933] close(3) = 0 [pid 4933] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4933] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4933] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4933] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4934 attached , parent_tid=[4934], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4934 [pid 4934] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4934] <... futex resumed>) = 0 [pid 4933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4934] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4933] <... futex resumed>) = 0 [pid 4934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4933] <... futex resumed>) = 0 [pid 4934] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4934] <... mount resumed>) = 0 [pid 4934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4933] <... futex resumed>) = 0 [pid 4934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4933] <... futex resumed>) = 0 [pid 4934] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4933] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4934] <... mount resumed>) = 0 [pid 4934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4933] <... futex resumed>) = 0 [pid 4934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4933] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4933] <... futex resumed>) = 0 [pid 4934] umount2("./file0", MNT_DETACH [pid 4933] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4934] <... umount2 resumed>) = 0 [pid 4933] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4934] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4933] <... mmap resumed>) = 0x7fc84e05e000 [pid 4934] <... futex resumed>) = 0 [pid 4933] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4934] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4933] <... mprotect resumed>) = 0 [pid 4933] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4935 attached , parent_tid=[4935], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4935 [pid 4935] set_robust_list(0x7fc84e07e9e0, 24 [pid 4933] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4935] <... set_robust_list resumed>) = 0 [pid 4933] <... futex resumed>) = 0 [pid 4935] umount2("./file0", MNT_DETACH [pid 4933] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4935] <... umount2 resumed>) = 0 [pid 4935] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4933] <... futex resumed>) = 0 [pid 4935] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4933] exit_group(0) = ? [pid 4934] <... futex resumed>) = 231 [pid 4935] <... futex resumed>) = ? [pid 4934] +++ exited with 0 +++ [pid 4935] +++ exited with 0 +++ [pid 4933] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4933, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4936 ./strace-static-x86_64: Process 4936 attached [pid 4936] set_robust_list(0x5555564465e0, 24) = 0 [pid 4936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4936] setpgid(0, 0) = 0 [pid 4936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4936] write(3, "1000", 4) = 4 [pid 4936] close(3) = 0 [pid 4936] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4936] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4936] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4937 attached [pid 4937] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4936] <... clone resumed>, parent_tid=[4937], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4937 [pid 4936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4937] <... futex resumed>) = 0 [pid 4937] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4937] <... futex resumed>) = 0 [pid 4937] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4936] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4937] <... futex resumed>) = 0 [pid 4937] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4936] <... futex resumed>) = 0 [pid 4936] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4936] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4937] umount2("./file0", MNT_DETACH [pid 4936] <... mmap resumed>) = 0x7fc84e05e000 [pid 4936] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4936] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4938 attached [pid 4938] set_robust_list(0x7fc84e07e9e0, 24 [pid 4937] <... umount2 resumed>) = 0 [pid 4936] <... clone resumed>, parent_tid=[4938], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4938 [pid 4937] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4936] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4937] <... futex resumed>) = 0 [pid 4936] <... futex resumed>) = 0 [pid 4937] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4936] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4938] <... set_robust_list resumed>) = 0 [pid 4938] umount2("./file0", MNT_DETACH) = 0 [pid 4938] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4936] <... futex resumed>) = 0 [pid 4936] exit_group(0) = ? [pid 4937] <... futex resumed>) = ? [pid 4937] +++ exited with 0 +++ [pid 4938] +++ exited with 0 +++ [pid 4936] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4936, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4939 ./strace-static-x86_64: Process 4939 attached [pid 4939] set_robust_list(0x5555564465e0, 24) = 0 [pid 4939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4939] setpgid(0, 0) = 0 [pid 4939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4939] write(3, "1000", 4) = 4 [pid 4939] close(3) = 0 [pid 4939] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4939] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4939] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4939] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4940 attached , parent_tid=[4940], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4940 [pid 4940] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4940] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4940] <... futex resumed>) = 0 [pid 4939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4940] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4939] <... futex resumed>) = 0 [pid 4940] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4940] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4939] <... futex resumed>) = 0 [pid 4940] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4940] <... mount resumed>) = 0 [pid 4940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4939] <... futex resumed>) = 0 [pid 4939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4939] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4940] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4939] <... futex resumed>) = 0 [pid 4940] umount2("./file0", MNT_DETACH [pid 4939] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4939] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4939] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4939] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4940] <... umount2 resumed>) = 0 [pid 4939] <... mprotect resumed>) = 0 [pid 4939] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4940] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4939] <... clone resumed>, parent_tid=[4941], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4941 [pid 4939] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4939] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4940] <... futex resumed>) = 0 ./strace-static-x86_64: Process 4941 attached [pid 4941] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4941] umount2("./file0", MNT_DETACH [pid 4940] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4941] <... umount2 resumed>) = 0 [pid 4941] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4939] <... futex resumed>) = 0 [pid 4939] exit_group(0 [pid 4941] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4939] <... exit_group resumed>) = ? [pid 4940] <... futex resumed>) = ? [pid 4940] +++ exited with 0 +++ [pid 4941] <... futex resumed>) = ? [pid 4941] +++ exited with 0 +++ [pid 4939] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4939, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4942 ./strace-static-x86_64: Process 4942 attached [pid 4942] set_robust_list(0x5555564465e0, 24) = 0 [pid 4942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4942] setpgid(0, 0) = 0 [pid 4942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4942] write(3, "1000", 4) = 4 [pid 4942] close(3) = 0 [pid 4942] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4942] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4942] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4943 attached [pid 4943] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4942] <... clone resumed>, parent_tid=[4943], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4943 [pid 4942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4943] <... futex resumed>) = 0 [pid 4943] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4942] <... futex resumed>) = 0 [pid 4942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4943] <... futex resumed>) = 0 [pid 4942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4943] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4942] <... futex resumed>) = 0 [pid 4943] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4943] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4942] <... futex resumed>) = 0 [pid 4942] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4943] <... mount resumed>) = 0 [pid 4943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4942] <... futex resumed>) = 0 [pid 4943] umount2("./file0", MNT_DETACH [pid 4942] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4942] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4942] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4942] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4943] <... umount2 resumed>) = 0 [pid 4943] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4942] <... clone resumed>, parent_tid=[4944], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4944 [pid 4943] <... futex resumed>) = 0 [pid 4942] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4943] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4942] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4944 attached [pid 4944] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4944] umount2("./file0", MNT_DETACH) = 0 [pid 4944] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4942] <... futex resumed>) = 0 [pid 4942] exit_group(0) = ? [pid 4943] <... futex resumed>) = ? [pid 4943] +++ exited with 0 +++ [pid 4944] +++ exited with 0 +++ [pid 4942] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4942, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4945 ./strace-static-x86_64: Process 4945 attached [pid 4945] set_robust_list(0x5555564465e0, 24) = 0 [pid 4945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4945] setpgid(0, 0) = 0 [pid 4945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4945] write(3, "1000", 4) = 4 [pid 4945] close(3) = 0 [pid 4945] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4945] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4945] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4946 attached [pid 4946] set_robust_list(0x7fc84e09f9e0, 24 [pid 4945] <... clone resumed>, parent_tid=[4946], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4946 [pid 4945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4946] <... set_robust_list resumed>) = 0 [pid 4946] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4945] <... futex resumed>) = 0 [pid 4945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4946] <... futex resumed>) = 1 [pid 4946] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4945] <... futex resumed>) = 0 [pid 4945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4946] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4945] <... futex resumed>) = 0 [pid 4945] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4945] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4945] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4947], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4947 ./strace-static-x86_64: Process 4947 attached [pid 4945] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4945] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4946] <... futex resumed>) = 1 [pid 4946] umount2("./file0", MNT_DETACH) = 0 [pid 4947] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4947] umount2("./file0", MNT_DETACH) = 0 [pid 4947] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4947] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4946] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4945] <... futex resumed>) = 0 [pid 4946] <... futex resumed>) = 0 [pid 4945] exit_group(0) = ? [pid 4947] <... futex resumed>) = ? [pid 4947] +++ exited with 0 +++ [pid 4946] +++ exited with 0 +++ [pid 4945] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4945, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4948 ./strace-static-x86_64: Process 4948 attached [pid 4948] set_robust_list(0x5555564465e0, 24) = 0 [pid 4948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4948] setpgid(0, 0) = 0 [pid 4948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4948] write(3, "1000", 4) = 4 [pid 4948] close(3) = 0 [pid 4948] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4948] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4948] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4949 attached , parent_tid=[4949], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4949 [pid 4949] set_robust_list(0x7fc84e09f9e0, 24 [pid 4948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4949] <... set_robust_list resumed>) = 0 [pid 4949] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4948] <... futex resumed>) = 0 [pid 4949] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4949] <... futex resumed>) = 0 [pid 4948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4949] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4948] <... futex resumed>) = 0 [pid 4948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4948] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4949] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4948] <... futex resumed>) = 0 [pid 4948] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4948] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4948] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4949] umount2("./file0", MNT_DETACH [pid 4948] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4950], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4950 [pid 4948] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4948] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4950 attached [pid 4950] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4950] umount2("./file0", MNT_DETACH) = 0 [pid 4950] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4948] <... futex resumed>) = 0 [pid 4950] <... futex resumed>) = 1 [pid 4950] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4949] <... umount2 resumed>) = 0 [pid 4949] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4949] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4948] exit_group(0) = ? [pid 4949] <... futex resumed>) = ? [pid 4950] <... futex resumed>) = ? [pid 4950] +++ exited with 0 +++ [pid 4949] +++ exited with 0 +++ [pid 4948] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4948, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4951 ./strace-static-x86_64: Process 4951 attached [pid 4951] set_robust_list(0x5555564465e0, 24) = 0 [pid 4951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4951] setpgid(0, 0) = 0 [pid 4951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4951] write(3, "1000", 4) = 4 [pid 4951] close(3) = 0 [pid 4951] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4951] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4951] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4951] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4952 attached , parent_tid=[4952], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4952 [pid 4952] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4952] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4952] <... futex resumed>) = 0 [pid 4952] mkdir("./file0", 000 [pid 4951] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4952] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4952] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4951] <... futex resumed>) = 0 [pid 4951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4952] <... futex resumed>) = 0 [pid 4952] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4951] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4952] <... mount resumed>) = 0 [pid 4952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4952] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4951] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4952] <... futex resumed>) = 0 [pid 4952] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4951] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4952] <... mount resumed>) = 0 [pid 4952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4951] <... futex resumed>) = 0 [pid 4952] umount2("./file0", MNT_DETACH [pid 4951] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4951] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4951] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4952] <... umount2 resumed>) = 0 [pid 4951] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4952] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4951] <... mprotect resumed>) = 0 [pid 4952] <... futex resumed>) = 0 [pid 4951] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4953 attached [pid 4952] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4953] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4953] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4951] <... clone resumed>, parent_tid=[4953], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4953 [pid 4951] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4953] <... futex resumed>) = 0 [pid 4953] umount2("./file0", MNT_DETACH) = 0 [pid 4951] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4953] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4951] <... futex resumed>) = 0 [pid 4953] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4951] exit_group(0) = ? [pid 4953] <... futex resumed>) = 231 [pid 4953] +++ exited with 0 +++ [pid 4952] <... futex resumed>) = ? [pid 4952] +++ exited with 0 +++ [pid 4951] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4951, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4954 ./strace-static-x86_64: Process 4954 attached [pid 4954] set_robust_list(0x5555564465e0, 24) = 0 [pid 4954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4954] setpgid(0, 0) = 0 [pid 4954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4954] write(3, "1000", 4) = 4 [pid 4954] close(3) = 0 [pid 4954] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4954] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4954] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4955 attached , parent_tid=[4955], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4955 [pid 4955] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4955] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4955] mkdir("./file0", 000 [pid 4954] <... futex resumed>) = 0 [pid 4955] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4955] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4954] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4955] <... futex resumed>) = 0 [pid 4955] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4954] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4955] <... mount resumed>) = 0 [pid 4955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4955] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4954] <... futex resumed>) = 0 [pid 4954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4955] <... futex resumed>) = 0 [pid 4955] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4954] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4955] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4954] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4955] <... futex resumed>) = 0 [pid 4955] umount2("./file0", MNT_DETACH [pid 4954] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4955] <... umount2 resumed>) = 0 [pid 4954] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4955] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4954] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4955] <... futex resumed>) = 0 [pid 4955] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4956 attached [pid 4954] <... clone resumed>, parent_tid=[4956], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4956 [pid 4954] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4954] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4956] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4956] umount2("./file0", MNT_DETACH) = 0 [pid 4956] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4954] <... futex resumed>) = 0 [pid 4956] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4954] exit_group(0) = ? [pid 4956] <... futex resumed>) = 231 [pid 4955] <... futex resumed>) = ? [pid 4955] +++ exited with 0 +++ [pid 4956] +++ exited with 0 +++ [pid 4954] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4954, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4957 ./strace-static-x86_64: Process 4957 attached [pid 4957] set_robust_list(0x5555564465e0, 24) = 0 [pid 4957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4957] setpgid(0, 0) = 0 [pid 4957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4957] write(3, "1000", 4) = 4 [pid 4957] close(3) = 0 [pid 4957] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4957] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4957] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4957] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4958 attached , parent_tid=[4958], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4958 [pid 4957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4957] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4958] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4958] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4958] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4957] <... futex resumed>) = 0 [pid 4957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4958] <... futex resumed>) = 0 [pid 4957] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4958] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4957] <... futex resumed>) = 0 [pid 4958] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4957] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4958] <... mount resumed>) = 0 [pid 4958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4957] <... futex resumed>) = 0 [pid 4958] umount2("./file0", MNT_DETACH [pid 4957] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4957] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4957] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4958] <... umount2 resumed>) = 0 [pid 4958] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4957] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4958] <... futex resumed>) = 0 [pid 4957] <... mprotect resumed>) = 0 [pid 4958] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4957] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4959 attached , parent_tid=[4959], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4959 [pid 4959] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4959] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4957] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4959] <... futex resumed>) = 0 [pid 4959] umount2("./file0", MNT_DETACH [pid 4957] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4959] <... umount2 resumed>) = 0 [pid 4959] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4957] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4959] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4957] exit_group(0) = ? [pid 4958] <... futex resumed>) = ? [pid 4959] <... futex resumed>) = ? [pid 4958] +++ exited with 0 +++ [pid 4959] +++ exited with 0 +++ [pid 4957] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4957, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4960 ./strace-static-x86_64: Process 4960 attached [pid 4960] set_robust_list(0x5555564465e0, 24) = 0 [pid 4960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4960] setpgid(0, 0) = 0 [pid 4960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4960] write(3, "1000", 4) = 4 [pid 4960] close(3) = 0 [pid 4960] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4960] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4960] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4961], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4961 [pid 4960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4960] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4961 attached [pid 4961] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4961] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4960] <... futex resumed>) = 0 [pid 4961] <... futex resumed>) = 1 [pid 4960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4961] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4960] <... futex resumed>) = 0 [pid 4960] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4961] <... mount resumed>) = 0 [pid 4961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4960] <... futex resumed>) = 0 [pid 4961] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4960] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4961] <... mount resumed>) = 0 [pid 4961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4960] <... futex resumed>) = 0 [pid 4960] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4960] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4960] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4960] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4961] umount2("./file0", MNT_DETACH [pid 4960] <... clone resumed>, parent_tid=[4962], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4962 [pid 4960] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4961] <... umount2 resumed>) = 0 [pid 4960] <... futex resumed>) = 0 [pid 4960] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4962 attached [pid 4962] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4962] umount2("./file0", MNT_DETACH [pid 4961] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4962] <... umount2 resumed>) = 0 [pid 4961] <... futex resumed>) = 0 [pid 4962] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4961] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4960] <... futex resumed>) = 0 [pid 4960] exit_group(0 [pid 4962] <... futex resumed>) = 1 [pid 4960] <... exit_group resumed>) = ? [pid 4961] <... futex resumed>) = ? [pid 4962] +++ exited with 0 +++ [pid 4961] +++ exited with 0 +++ [pid 4960] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4960, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4963 ./strace-static-x86_64: Process 4963 attached [pid 4963] set_robust_list(0x5555564465e0, 24) = 0 [pid 4963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4963] setpgid(0, 0) = 0 [pid 4963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4963] write(3, "1000", 4) = 4 [pid 4963] close(3) = 0 [pid 4963] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4963] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4963] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4963] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4964], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4964 ./strace-static-x86_64: Process 4964 attached [pid 4963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4963] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4964] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4964] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4964] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4963] <... futex resumed>) = 0 [pid 4963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4964] <... futex resumed>) = 0 [pid 4963] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4964] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4963] <... futex resumed>) = 0 [pid 4963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4963] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4964] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4963] <... futex resumed>) = 0 [pid 4963] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4963] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4963] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4963] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4963] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4965 attached , parent_tid=[4965], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4965 [pid 4964] umount2("./file0", MNT_DETACH [pid 4965] set_robust_list(0x7fc84e07e9e0, 24 [pid 4963] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4965] <... set_robust_list resumed>) = 0 [pid 4963] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4965] umount2("./file0", MNT_DETACH [pid 4964] <... umount2 resumed>) = 0 [pid 4964] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4964] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4965] <... umount2 resumed>) = 0 [pid 4965] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4963] <... futex resumed>) = 0 [pid 4965] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4963] exit_group(0) = ? [pid 4965] <... futex resumed>) = ? [pid 4964] <... futex resumed>) = ? [pid 4964] +++ exited with 0 +++ [pid 4965] +++ exited with 0 +++ [pid 4963] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4963, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4966 ./strace-static-x86_64: Process 4966 attached [pid 4966] set_robust_list(0x5555564465e0, 24) = 0 [pid 4966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4966] setpgid(0, 0) = 0 [pid 4966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4966] write(3, "1000", 4) = 4 [pid 4966] close(3) = 0 [pid 4966] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4966] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4966] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4967], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4967 [pid 4966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4967 attached [pid 4967] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4967] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4966] <... futex resumed>) = 0 [pid 4966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4967] <... futex resumed>) = 1 [pid 4967] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4966] <... futex resumed>) = 0 [pid 4966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4967] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4966] <... futex resumed>) = 0 [pid 4966] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4966] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4966] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4968], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4968 [pid 4967] umount2("./file0", MNT_DETACH [pid 4966] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4966] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4968 attached [pid 4968] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4968] umount2("./file0", MNT_DETACH [pid 4967] <... umount2 resumed>) = 0 [pid 4967] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4968] <... umount2 resumed>) = 0 [pid 4968] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4966] <... futex resumed>) = 0 [pid 4966] exit_group(0) = ? [pid 4968] <... futex resumed>) = ? [pid 4967] <... futex resumed>) = ? [pid 4967] +++ exited with 0 +++ [pid 4968] +++ exited with 0 +++ [pid 4966] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4966, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4969 attached , child_tidptr=0x5555564465d0) = 4969 [pid 4969] set_robust_list(0x5555564465e0, 24) = 0 [pid 4969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4969] setpgid(0, 0) = 0 [pid 4969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4969] write(3, "1000", 4) = 4 [pid 4969] close(3) = 0 [pid 4969] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4969] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4969] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4969] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4970 attached , parent_tid=[4970], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4970 [pid 4970] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4970] <... futex resumed>) = 0 [pid 4969] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4970] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] <... futex resumed>) = 0 [pid 4969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4970] <... futex resumed>) = 0 [pid 4970] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4970] <... futex resumed>) = 0 [pid 4969] <... futex resumed>) = 1 [pid 4970] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4969] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4970] <... futex resumed>) = 0 [pid 4970] umount2("./file0", MNT_DETACH [pid 4969] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4970] <... umount2 resumed>) = 0 [pid 4970] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4970] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] <... futex resumed>) = 0 [pid 4969] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4969] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4969] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4971 attached [pid 4971] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4971] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] <... clone resumed>, parent_tid=[4971], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4971 [pid 4969] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4971] <... futex resumed>) = 0 [pid 4971] umount2("./file0", MNT_DETACH) = 0 [pid 4971] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4971] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4969] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4969] exit_group(0 [pid 4970] <... futex resumed>) = ? [pid 4969] <... exit_group resumed>) = ? [pid 4970] +++ exited with 0 +++ [pid 4971] <... futex resumed>) = ? [pid 4971] +++ exited with 0 +++ [pid 4969] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4969, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4972 ./strace-static-x86_64: Process 4972 attached [pid 4972] set_robust_list(0x5555564465e0, 24) = 0 [pid 4972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4972] setpgid(0, 0) = 0 [pid 4972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4972] write(3, "1000", 4) = 4 [pid 4972] close(3) = 0 [pid 4972] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4972] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4972] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4973 attached , parent_tid=[4973], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4973 [pid 4972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4972] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4973] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4973] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4972] <... futex resumed>) = 0 [pid 4972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4973] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4972] <... futex resumed>) = 0 [pid 4973] <... mount resumed>) = 0 [pid 4972] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4972] <... futex resumed>) = 0 [pid 4973] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4973] <... mount resumed>) = 0 [pid 4972] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4972] <... futex resumed>) = 0 [pid 4972] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4973] umount2("./file0", MNT_DETACH [pid 4972] <... futex resumed>) = 0 [pid 4972] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4973] <... umount2 resumed>) = 0 [pid 4972] <... futex resumed>) = 0 [pid 4973] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4973] <... futex resumed>) = 0 [pid 4972] <... mmap resumed>) = 0x7fc84e05e000 [pid 4973] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4972] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4972] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4974 attached , parent_tid=[4974], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4974 [pid 4974] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4974] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4972] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4974] <... futex resumed>) = 0 [pid 4974] umount2("./file0", MNT_DETACH [pid 4972] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4974] <... umount2 resumed>) = 0 [pid 4974] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4974] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4972] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4972] exit_group(0 [pid 4973] <... futex resumed>) = ? [pid 4972] <... exit_group resumed>) = ? [pid 4974] <... futex resumed>) = ? [pid 4973] +++ exited with 0 +++ [pid 4974] +++ exited with 0 +++ [pid 4972] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4972, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4975 attached , child_tidptr=0x5555564465d0) = 4975 [pid 4975] set_robust_list(0x5555564465e0, 24) = 0 [pid 4975] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4975] setpgid(0, 0) = 0 [pid 4975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4975] write(3, "1000", 4) = 4 [pid 4975] close(3) = 0 [pid 4975] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4975] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4975] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4975] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4976 attached , parent_tid=[4976], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4976 [pid 4976] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4976] <... futex resumed>) = 0 [pid 4976] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4976] <... futex resumed>) = 0 [pid 4976] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4976] <... futex resumed>) = 0 [pid 4976] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4975] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4976] <... mount resumed>) = 0 [pid 4976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4975] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4976] <... futex resumed>) = 0 [pid 4976] umount2("./file0", MNT_DETACH [pid 4975] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4976] <... umount2 resumed>) = 0 [pid 4976] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4976] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] <... futex resumed>) = 0 [pid 4975] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4975] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4975] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4977 attached [pid 4977] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4975] <... clone resumed>, parent_tid=[4977], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4977 [pid 4977] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4977] <... futex resumed>) = 0 [pid 4977] umount2("./file0", MNT_DETACH) = 0 [pid 4975] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4977] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4977] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4975] exit_group(0 [pid 4976] <... futex resumed>) = ? [pid 4975] <... exit_group resumed>) = ? [pid 4976] +++ exited with 0 +++ [pid 4977] <... futex resumed>) = ? [pid 4977] +++ exited with 0 +++ [pid 4975] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4975, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4978 attached , child_tidptr=0x5555564465d0) = 4978 [pid 4978] set_robust_list(0x5555564465e0, 24) = 0 [pid 4978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4978] setpgid(0, 0) = 0 [pid 4978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 37.764537][ T4965] VFS: Busy inodes after unmount of ramfs. Self-destruct in 5 seconds. Have a nice day... [pid 4978] write(3, "1000", 4) = 4 [pid 4978] close(3) = 0 [pid 4978] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4978] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4978] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4978] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4979 attached , parent_tid=[4979], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4979 [pid 4979] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4979] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4978] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4979] <... futex resumed>) = 0 [pid 4979] mkdir("./file0", 000 [pid 4978] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4979] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4979] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4979] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4978] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4978] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4979] <... futex resumed>) = 0 [pid 4979] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4978] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4979] <... mount resumed>) = 0 [pid 4979] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4979] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4978] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4978] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4979] <... futex resumed>) = 0 [pid 4979] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4978] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4979] <... mount resumed>) = 0 [pid 4979] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4978] <... futex resumed>) = 0 [pid 4978] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4978] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4978] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4978] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4979] umount2("./file0", MNT_DETACH [pid 4978] <... mprotect resumed>) = 0 [pid 4978] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4980], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4980 [pid 4978] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4978] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4980 attached [pid 4980] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4980] umount2("./file0", MNT_DETACH [pid 4979] <... umount2 resumed>) = 0 [pid 4979] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4980] <... umount2 resumed>) = 0 [pid 4979] <... futex resumed>) = 0 [pid 4979] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4980] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4978] <... futex resumed>) = 0 [pid 4978] exit_group(0 [pid 4980] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4978] <... exit_group resumed>) = ? [pid 4980] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 4980] +++ exited with 0 +++ [pid 4979] <... futex resumed>) = ? [pid 4979] +++ exited with 0 +++ [pid 4978] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4978, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4981 ./strace-static-x86_64: Process 4981 attached [pid 4981] set_robust_list(0x5555564465e0, 24) = 0 [pid 4981] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4981] setpgid(0, 0) = 0 [pid 4981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4981] write(3, "1000", 4) = 4 [pid 4981] close(3) = 0 [pid 4981] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4981] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4981] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4981] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4982 attached , parent_tid=[4982], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4982 [pid 4981] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4981] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4982] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4982] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4982] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4981] <... futex resumed>) = 0 [pid 4981] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4981] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4982] <... futex resumed>) = 1 [pid 4982] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4982] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4981] <... futex resumed>) = 0 [pid 4982] <... futex resumed>) = 1 [pid 4981] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4982] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4981] <... futex resumed>) = 0 [pid 4981] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4982] <... mount resumed>) = 0 [pid 4982] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4981] <... futex resumed>) = 0 [pid 4982] <... futex resumed>) = 1 [pid 4981] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4982] umount2("./file0", MNT_DETACH [pid 4981] <... futex resumed>) = 0 [pid 4981] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4981] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4981] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4982] <... umount2 resumed>) = 0 [pid 4981] <... mprotect resumed>) = 0 [pid 4982] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4981] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4982] <... futex resumed>) = 0 [pid 4982] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 4983 attached [pid 4981] <... clone resumed>, parent_tid=[4983], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4983 [pid 4983] set_robust_list(0x7fc84e07e9e0, 24 [pid 4981] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4983] <... set_robust_list resumed>) = 0 [pid 4981] <... futex resumed>) = 0 [pid 4983] umount2("./file0", MNT_DETACH [pid 4981] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4983] <... umount2 resumed>) = 0 [pid 4983] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4981] <... futex resumed>) = 0 [pid 4983] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4981] exit_group(0) = ? [pid 4982] <... futex resumed>) = 231 [pid 4983] <... futex resumed>) = ? [pid 4982] +++ exited with 0 +++ [pid 4983] +++ exited with 0 +++ [pid 4981] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4981, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4984 attached , child_tidptr=0x5555564465d0) = 4984 [pid 4984] set_robust_list(0x5555564465e0, 24) = 0 [pid 4984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4984] setpgid(0, 0) = 0 [pid 4984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4984] write(3, "1000", 4) = 4 [pid 4984] close(3) = 0 [pid 4984] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4984] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4984] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4984] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4985 attached [pid 4985] set_robust_list(0x7fc84e09f9e0, 24 [pid 4984] <... clone resumed>, parent_tid=[4985], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4985 [pid 4985] <... set_robust_list resumed>) = 0 [pid 4984] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4985] mkdir("./file0", 000 [pid 4984] <... futex resumed>) = 0 [pid 4985] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4984] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4985] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4984] <... futex resumed>) = 0 [pid 4985] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4984] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4985] <... mount resumed>) = 0 [pid 4984] <... futex resumed>) = 0 [pid 4985] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4984] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4985] <... futex resumed>) = 0 [pid 4984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4985] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4984] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4985] <... mount resumed>) = 0 [pid 4984] <... futex resumed>) = 0 [pid 4984] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4985] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4984] <... futex resumed>) = 0 [pid 4985] umount2("./file0", MNT_DETACH [pid 4984] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4985] <... umount2 resumed>) = 0 [pid 4984] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4985] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4984] <... futex resumed>) = 0 [pid 4985] <... futex resumed>) = 0 [pid 4984] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4985] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4984] <... mmap resumed>) = 0x7fc84e05e000 [pid 4984] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4984] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4986 attached , parent_tid=[4986], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4986 [pid 4986] set_robust_list(0x7fc84e07e9e0, 24 [pid 4984] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4986] <... set_robust_list resumed>) = 0 [pid 4984] <... futex resumed>) = 0 [pid 4986] umount2("./file0", MNT_DETACH [pid 4984] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4986] <... umount2 resumed>) = 0 [pid 4986] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4984] <... futex resumed>) = 0 [pid 4986] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4984] exit_group(0) = ? [pid 4985] <... futex resumed>) = ? [pid 4985] +++ exited with 0 +++ [pid 4986] <... futex resumed>) = ? [pid 4986] +++ exited with 0 +++ [pid 4984] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4984, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4987 ./strace-static-x86_64: Process 4987 attached [pid 4987] set_robust_list(0x5555564465e0, 24) = 0 [pid 4987] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4987] setpgid(0, 0) = 0 [pid 4987] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4987] write(3, "1000", 4) = 4 [pid 4987] close(3) = 0 [pid 4987] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4987] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4987] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4987] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4988], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4988 [pid 4987] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4987] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4988 attached [pid 4988] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4988] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4988] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4987] <... futex resumed>) = 0 [pid 4987] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4987] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4988] <... futex resumed>) = 1 [pid 4988] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4988] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4987] <... futex resumed>) = 0 [pid 4988] <... futex resumed>) = 1 [pid 4987] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4988] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 4987] <... futex resumed>) = 0 [pid 4987] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4988] <... mount resumed>) = 0 [pid 4988] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4987] <... futex resumed>) = 0 [pid 4987] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4987] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4987] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4988] umount2("./file0", MNT_DETACH [pid 4987] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4987] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4989], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4989 [pid 4987] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4987] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4989 attached [pid 4989] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4989] umount2("./file0", MNT_DETACH [pid 4988] <... umount2 resumed>) = 0 [pid 4989] <... umount2 resumed>) = 0 [pid 4988] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4989] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4987] <... futex resumed>) = 0 [pid 4987] exit_group(0) = ? [pid 4988] <... futex resumed>) = ? [pid 4989] <... futex resumed>) = ? [pid 4989] +++ exited with 0 +++ [pid 4988] +++ exited with 0 +++ [pid 4987] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4987, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4990 attached , child_tidptr=0x5555564465d0) = 4990 [pid 4990] set_robust_list(0x5555564465e0, 24) = 0 [pid 4990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4990] setpgid(0, 0) = 0 [pid 4990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4990] write(3, "1000", 4) = 4 [pid 4990] close(3) = 0 [pid 4990] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4990] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4990] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4991], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4991 [pid 4990] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4990] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4991 attached [pid 4991] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4991] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4991] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4990] <... futex resumed>) = 0 [pid 4990] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4990] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4991] <... futex resumed>) = 1 [pid 4991] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4991] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4990] <... futex resumed>) = 0 [pid 4990] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4990] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4991] <... futex resumed>) = 1 [pid 4991] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4991] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4990] <... futex resumed>) = 0 [pid 4991] umount2("./file0", MNT_DETACH [pid 4990] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4991] <... umount2 resumed>) = 0 [pid 4990] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4991] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 4991] <... futex resumed>) = 0 [pid 4990] <... mmap resumed>) = 0x7fc84e05e000 [pid 4991] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4990] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4990] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4992], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4992 [pid 4990] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4990] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4992 attached [pid 4992] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4992] umount2("./file0", MNT_DETACH) = 0 [pid 4992] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4992] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4990] <... futex resumed>) = 0 [pid 4990] exit_group(0) = ? [pid 4991] <... futex resumed>) = ? [pid 4991] +++ exited with 0 +++ [pid 4992] <... futex resumed>) = ? [pid 4992] +++ exited with 0 +++ [pid 4990] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4990, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4993 ./strace-static-x86_64: Process 4993 attached [pid 4993] set_robust_list(0x5555564465e0, 24) = 0 [pid 4993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4993] setpgid(0, 0) = 0 [pid 4993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "1000", 4) = 4 [pid 4993] close(3) = 0 [pid 4993] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4993] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4993] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4993] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4994 attached , parent_tid=[4994], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4994 [pid 4993] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4994] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 4994] mkdir("./file0", 000 [pid 4993] <... futex resumed>) = 0 [pid 4994] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 4994] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4994] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4993] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 4993] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4994] <... futex resumed>) = 0 [pid 4993] <... futex resumed>) = 1 [pid 4993] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4994] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 4994] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4993] <... futex resumed>) = 0 [pid 4993] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4993] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4994] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4994] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4993] <... futex resumed>) = 0 [pid 4993] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4993] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4993] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4993] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4993] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4996 attached , parent_tid=[4996], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4996 [pid 4993] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4993] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4996] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4996] umount2("./file0", MNT_DETACH [pid 4994] umount2("./file0", MNT_DETACH [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4996] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 4994] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4994] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4996] <... futex resumed>) = 1 [pid 4993] <... futex resumed>) = 0 [pid 4993] exit_group(0) = ? [pid 4994] <... futex resumed>) = ? [pid 4994] +++ exited with 0 +++ [pid 4996] +++ exited with 0 +++ [pid 4993] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4993, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 4997 ./strace-static-x86_64: Process 4997 attached [pid 4997] set_robust_list(0x5555564465e0, 24) = 0 [pid 4997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4997] setpgid(0, 0) = 0 [pid 4997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4997] write(3, "1000", 4) = 4 [pid 4997] close(3) = 0 [pid 4997] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 4997] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 4997] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 4998 attached , parent_tid=[4998], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 4998 [pid 4998] set_robust_list(0x7fc84e09f9e0, 24 [pid 4997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4998] <... set_robust_list resumed>) = 0 [pid 4997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4998] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 4998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 4997] <... futex resumed>) = 0 [pid 4997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 4998] <... futex resumed>) = 1 [pid 4997] <... futex resumed>) = 0 [pid 4998] mount(NULL, "./file0", "ramfs", 0, NULL [pid 4997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4998] <... mount resumed>) = 0 [pid 4998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4997] <... futex resumed>) = 0 [pid 4997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4997] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 4998] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 4998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4997] <... futex resumed>) = 0 [pid 4998] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4997] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4997] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4997] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 4997] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 4998] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 4997] <... mprotect resumed>) = 0 [pid 4997] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 4998] umount2("./file0", MNT_DETACH [pid 4997] <... clone resumed>, parent_tid=[4999], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 4999 [pid 4997] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4997] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 4999 attached [pid 4999] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4999] umount2("./file0", MNT_DETACH [pid 4998] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 4998] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4999] <... umount2 resumed>) = 0 [pid 4999] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 4997] <... futex resumed>) = 0 [pid 4997] exit_group(0 [pid 4999] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 4997] <... exit_group resumed>) = ? [pid 4998] <... futex resumed>) = ? [pid 4999] <... futex resumed>) = ? [pid 4998] +++ exited with 0 +++ [pid 4999] +++ exited with 0 +++ [pid 4997] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4997, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5000 ./strace-static-x86_64: Process 5000 attached [pid 5000] set_robust_list(0x5555564465e0, 24) = 0 [pid 5000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5000] setpgid(0, 0) = 0 [pid 5000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5000] write(3, "1000", 4) = 4 [pid 5000] close(3) = 0 [pid 5000] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5000] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5000] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5001 attached , parent_tid=[5001], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5001 [pid 5000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5001] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5001] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5000] <... futex resumed>) = 0 [pid 5001] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5000] <... futex resumed>) = 0 [pid 5001] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5001] <... mount resumed>) = 0 [pid 5001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5000] <... futex resumed>) = 0 [pid 5000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5001] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5000] <... futex resumed>) = 0 [pid 5000] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5001] umount2("./file0", MNT_DETACH [pid 5000] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5000] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5002], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5002 [pid 5000] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5002 attached [pid 5002] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5002] umount2("./file0", MNT_DETACH [pid 5001] <... umount2 resumed>) = 0 [pid 5002] <... umount2 resumed>) = 0 [pid 5002] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5001] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5000] <... futex resumed>) = 0 [pid 5000] exit_group(0) = ? [pid 5002] <... futex resumed>) = ? [pid 5002] +++ exited with 0 +++ [pid 5001] +++ exited with 0 +++ [pid 5000] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5000, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5003 ./strace-static-x86_64: Process 5003 attached [pid 5003] set_robust_list(0x5555564465e0, 24) = 0 [pid 5003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5003] setpgid(0, 0) = 0 [pid 5003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1000", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5003] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5003] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5004 attached , parent_tid=[5004], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5004 [pid 5004] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5004] <... futex resumed>) = 0 [pid 5003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5004] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5003] <... futex resumed>) = 0 [pid 5003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5004] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5003] <... futex resumed>) = 0 [pid 5004] <... mount resumed>) = 0 [pid 5003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5003] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5004] <... futex resumed>) = 0 [pid 5003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5004] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5003] <... futex resumed>) = 0 [pid 5004] <... mount resumed>) = 0 [pid 5003] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5003] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5004] <... futex resumed>) = 0 [pid 5003] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5004] umount2("./file0", MNT_DETACH [pid 5003] <... futex resumed>) = 0 [pid 5003] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5004] <... umount2 resumed>) = 0 [pid 5003] <... futex resumed>) = 0 [pid 5004] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5004] <... futex resumed>) = 0 [pid 5003] <... mmap resumed>) = 0x7fc84e05e000 [pid 5004] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5003] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5003] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5005 attached , parent_tid=[5005], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5005 [pid 5005] set_robust_list(0x7fc84e07e9e0, 24 [pid 5003] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5005] <... set_robust_list resumed>) = 0 [pid 5003] <... futex resumed>) = 0 [pid 5005] umount2("./file0", MNT_DETACH [pid 5003] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5005] <... umount2 resumed>) = 0 [pid 5005] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5003] <... futex resumed>) = 0 [pid 5005] <... futex resumed>) = 1 [pid 5003] exit_group(0 [pid 5005] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5004] <... futex resumed>) = ? [pid 5003] <... exit_group resumed>) = ? [pid 5004] +++ exited with 0 +++ [pid 5005] +++ exited with 0 +++ [pid 5003] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5003, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5006 ./strace-static-x86_64: Process 5006 attached [pid 5006] set_robust_list(0x5555564465e0, 24) = 0 [pid 5006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5006] setpgid(0, 0) = 0 [pid 5006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5006] write(3, "1000", 4) = 4 [pid 5006] close(3) = 0 [pid 5006] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5006] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5006] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5007], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5007 [pid 5006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5007 attached [pid 5007] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5007] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5006] <... futex resumed>) = 0 [pid 5006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5007] <... futex resumed>) = 1 [pid 5007] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5006] <... futex resumed>) = 0 [pid 5006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5006] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5007] <... futex resumed>) = 1 [pid 5007] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5006] <... futex resumed>) = 0 [pid 5007] <... futex resumed>) = 1 [pid 5006] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5007] umount2("./file0", MNT_DETACH [pid 5006] <... futex resumed>) = 0 [pid 5006] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5007] <... umount2 resumed>) = 0 [pid 5006] <... mmap resumed>) = 0x7fc84e05e000 [pid 5007] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5006] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5007] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5006] <... mprotect resumed>) = 0 [pid 5006] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5008], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5008 ./strace-static-x86_64: Process 5008 attached [pid 5006] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5008] set_robust_list(0x7fc84e07e9e0, 24 [pid 5006] <... futex resumed>) = 0 [pid 5008] <... set_robust_list resumed>) = 0 [pid 5006] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5008] umount2("./file0", MNT_DETACH) = 0 [pid 5008] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5006] <... futex resumed>) = 0 [pid 5008] <... futex resumed>) = 1 [pid 5006] exit_group(0 [pid 5008] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5007] <... futex resumed>) = ? [pid 5006] <... exit_group resumed>) = ? [pid 5008] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 5007] +++ exited with 0 +++ [pid 5008] +++ exited with 0 +++ [pid 5006] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5006, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5009 attached , child_tidptr=0x5555564465d0) = 5009 [pid 5009] set_robust_list(0x5555564465e0, 24) = 0 [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setpgid(0, 0) = 0 [pid 5009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1000", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5009] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5009] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5009] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5010 attached , parent_tid=[5010], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5010 [pid 5010] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5010] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5010] <... futex resumed>) = 0 [pid 5009] <... futex resumed>) = 1 [pid 5009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5010] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5009] <... futex resumed>) = 0 [pid 5010] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5009] <... futex resumed>) = 0 [pid 5010] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5010] <... mount resumed>) = 0 [pid 5010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5009] <... futex resumed>) = 0 [pid 5009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5009] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5010] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5010] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5009] <... futex resumed>) = 0 [pid 5009] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5009] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5009] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5009] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5009] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5011], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5011 [pid 5009] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5009] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5011 attached [pid 5011] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5011] umount2("./file0", MNT_DETACH [pid 5010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5010] umount2("./file0", MNT_DETACH) = 0 [pid 5010] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5011] <... umount2 resumed>) = 0 [pid 5011] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5009] <... futex resumed>) = 0 [pid 5009] exit_group(0) = ? [pid 5011] <... futex resumed>) = ? [pid 5011] +++ exited with 0 +++ [pid 5010] <... futex resumed>) = ? [pid 5010] +++ exited with 0 +++ [pid 5009] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5009, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5012 ./strace-static-x86_64: Process 5012 attached [pid 5012] set_robust_list(0x5555564465e0, 24) = 0 [pid 5012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5012] setpgid(0, 0) = 0 [pid 5012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5012] write(3, "1000", 4) = 4 [pid 5012] close(3) = 0 [pid 5012] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5012] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5012] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5013], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5013 [pid 5012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5013 attached [pid 5013] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5013] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5012] <... futex resumed>) = 0 [pid 5012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5013] <... futex resumed>) = 1 [pid 5013] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5012] <... futex resumed>) = 0 [pid 5012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5013] <... futex resumed>) = 1 [pid 5013] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5012] <... futex resumed>) = 0 [pid 5012] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5012] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5013] <... futex resumed>) = 1 [pid 5012] <... mprotect resumed>) = 0 [pid 5013] umount2("./file0", MNT_DETACH [pid 5012] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5014 attached , parent_tid=[5014], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5014 [pid 5012] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5012] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5014] set_robust_list(0x7fc84e07e9e0, 24 [pid 5013] <... umount2 resumed>) = 0 [pid 5014] <... set_robust_list resumed>) = 0 [pid 5013] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5014] umount2("./file0", MNT_DETACH [pid 5013] <... futex resumed>) = 0 [pid 5013] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5014] <... umount2 resumed>) = 0 [pid 5014] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5012] <... futex resumed>) = 0 [pid 5012] exit_group(0) = ? [pid 5013] <... futex resumed>) = ? [pid 5013] +++ exited with 0 +++ [pid 5014] <... futex resumed>) = ? [pid 5014] +++ exited with 0 +++ [pid 5012] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5012, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5015 ./strace-static-x86_64: Process 5015 attached [pid 5015] set_robust_list(0x5555564465e0, 24) = 0 [pid 5015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5015] setpgid(0, 0) = 0 [pid 5015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5015] write(3, "1000", 4) = 4 [pid 5015] close(3) = 0 [pid 5015] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5015] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5015] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5016 attached , parent_tid=[5016], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5016 [pid 5016] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5016] mkdir("./file0", 000 [pid 5015] <... futex resumed>) = 0 [pid 5016] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5016] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5015] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5015] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] <... futex resumed>) = 0 [pid 5016] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5015] <... futex resumed>) = 0 [pid 5015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] <... futex resumed>) = 1 [pid 5016] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5015] <... futex resumed>) = 0 [pid 5015] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5015] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5015] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5017], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5017 [pid 5015] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 5017 attached [pid 5017] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5017] umount2("./file0", MNT_DETACH [pid 5016] <... umount2 resumed>) = 0 [pid 5016] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5017] <... umount2 resumed>) = 0 [pid 5016] <... futex resumed>) = 0 [pid 5017] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5015] <... futex resumed>) = 0 [pid 5015] exit_group(0) = ? [pid 5017] <... futex resumed>) = ? [pid 5016] +++ exited with 0 +++ [pid 5017] +++ exited with 0 +++ [pid 5015] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5015, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5018 attached , child_tidptr=0x5555564465d0) = 5018 [pid 5018] set_robust_list(0x5555564465e0, 24) = 0 [pid 5018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5018] setpgid(0, 0) = 0 [pid 5018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "1000", 4) = 4 [pid 5018] close(3) = 0 [pid 5018] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5018] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5018] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5019 attached , parent_tid=[5019], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5019 [pid 5019] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5019] <... futex resumed>) = 0 [pid 5019] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5019] <... futex resumed>) = 0 [pid 5019] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5018] <... futex resumed>) = 1 [pid 5018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5019] <... mount resumed>) = 0 [pid 5019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5019] <... futex resumed>) = 0 [pid 5019] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5018] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5019] <... mount resumed>) = 0 [pid 5019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5018] <... futex resumed>) = 0 [pid 5018] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5018] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5018] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5018] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5019] umount2("./file0", MNT_DETACH [pid 5018] <... clone resumed>, parent_tid=[5020], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5020 [pid 5018] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5018] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5020 attached [pid 5019] <... umount2 resumed>) = 0 [pid 5020] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5020] umount2("./file0", MNT_DETACH [pid 5019] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5020] <... umount2 resumed>) = 0 [pid 5019] <... futex resumed>) = 0 [pid 5020] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5019] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5018] <... futex resumed>) = 0 [pid 5018] exit_group(0) = ? [pid 5019] <... futex resumed>) = ? [pid 5020] <... futex resumed>) = ? [pid 5020] +++ exited with 0 +++ [pid 5019] +++ exited with 0 +++ [pid 5018] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5018, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5021 attached , child_tidptr=0x5555564465d0) = 5021 [pid 5021] set_robust_list(0x5555564465e0, 24) = 0 [pid 5021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5021] setpgid(0, 0) = 0 [pid 5021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1000", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5021] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5021] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5022], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5022 [pid 5021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5022 attached [pid 5022] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5022] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5021] <... futex resumed>) = 0 [pid 5021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5022] <... futex resumed>) = 1 [pid 5022] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5021] <... futex resumed>) = 0 [pid 5021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5022] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5021] <... futex resumed>) = 0 [pid 5021] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5021] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5021] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5023], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5023 [pid 5021] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5021] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5023 attached [pid 5023] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5023] umount2("./file0", MNT_DETACH) = 0 [pid 5023] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5021] <... futex resumed>) = 0 [pid 5023] <... futex resumed>) = 1 [pid 5023] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5022] umount2("./file0", MNT_DETACH) = 0 [pid 5022] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5022] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5021] exit_group(0) = ? [pid 5022] <... futex resumed>) = ? [pid 5023] <... futex resumed>) = ? [pid 5023] +++ exited with 0 +++ [pid 5022] +++ exited with 0 +++ [pid 5021] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5021, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5024 attached , child_tidptr=0x5555564465d0) = 5024 [pid 5024] set_robust_list(0x5555564465e0, 24) = 0 [pid 5024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5024] setpgid(0, 0) = 0 [pid 5024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5024] write(3, "1000", 4) = 4 [pid 5024] close(3) = 0 [pid 5024] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5024] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5024] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5025 attached , parent_tid=[5025], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5025 [pid 5025] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5024] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5024] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5025] <... futex resumed>) = 0 [pid 5025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5025] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5024] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] <... mount resumed>) = 0 [pid 5025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5024] <... futex resumed>) = 0 [pid 5024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5025] <... futex resumed>) = 0 [pid 5024] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5024] <... futex resumed>) = 0 [pid 5024] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5024] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5024] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5025] umount2("./file0", MNT_DETACH [pid 5024] <... mprotect resumed>) = 0 [pid 5024] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5026], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5026 [pid 5024] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5024] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5025] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5026 attached [pid 5026] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5026] umount2("./file0", MNT_DETACH [pid 5025] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5026] <... umount2 resumed>) = 0 [pid 5026] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5024] <... futex resumed>) = 0 [pid 5024] exit_group(0 [pid 5025] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5024] <... exit_group resumed>) = ? [pid 5025] <... futex resumed>) = ? [pid 5025] +++ exited with 0 +++ [pid 5026] <... futex resumed>) = ? [pid 5026] +++ exited with 0 +++ [pid 5024] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5024, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5027 attached , child_tidptr=0x5555564465d0) = 5027 [pid 5027] set_robust_list(0x5555564465e0, 24) = 0 [pid 5027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5027] setpgid(0, 0) = 0 [pid 5027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5027] write(3, "1000", 4) = 4 [pid 5027] close(3) = 0 [pid 5027] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5027] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5027] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5028 attached , parent_tid=[5028], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5028 [pid 5027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5028] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5028] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5027] <... futex resumed>) = 0 [pid 5028] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5028] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5028] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5027] <... futex resumed>) = 0 [pid 5028] <... futex resumed>) = 1 [pid 5027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5028] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5027] <... futex resumed>) = 0 [pid 5027] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5027] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5027] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5028] umount2("./file0", MNT_DETACH) = 0 [pid 5027] <... clone resumed>, parent_tid=[5029], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5029 [pid 5028] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5027] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5027] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5029 attached [pid 5029] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5029] umount2("./file0", MNT_DETACH [pid 5028] <... futex resumed>) = 0 [pid 5029] <... umount2 resumed>) = 0 [pid 5028] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5029] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5027] <... futex resumed>) = 0 [pid 5027] exit_group(0) = ? [pid 5028] <... futex resumed>) = ? [pid 5029] <... futex resumed>) = ? [pid 5029] +++ exited with 0 +++ [pid 5028] +++ exited with 0 +++ [pid 5027] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5027, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5030 ./strace-static-x86_64: Process 5030 attached [pid 5030] set_robust_list(0x5555564465e0, 24) = 0 [pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5030] setpgid(0, 0) = 0 [pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5030] write(3, "1000", 4) = 4 [pid 5030] close(3) = 0 [pid 5030] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5030] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5030] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5031 attached , parent_tid=[5031], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5031 [pid 5030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5031] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5031] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5030] <... futex resumed>) = 0 [pid 5030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5031] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5030] <... futex resumed>) = 0 [pid 5030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5031] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5030] <... futex resumed>) = 0 [pid 5030] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5030] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5030] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5031] umount2("./file0", MNT_DETACH [pid 5030] <... clone resumed>, parent_tid=[5032], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5032 [pid 5030] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5030] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5032 attached [pid 5032] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5032] umount2("./file0", MNT_DETACH [pid 5031] <... umount2 resumed>) = 0 [pid 5032] <... umount2 resumed>) = 0 [pid 5031] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5032] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5030] <... futex resumed>) = 0 [pid 5030] exit_group(0) = ? [pid 5031] <... futex resumed>) = ? [pid 5032] <... futex resumed>) = ? [pid 5032] +++ exited with 0 +++ [pid 5031] +++ exited with 0 +++ [pid 5030] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5030, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5033 attached , child_tidptr=0x5555564465d0) = 5033 [pid 5033] set_robust_list(0x5555564465e0, 24) = 0 [pid 5033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5033] setpgid(0, 0) = 0 [pid 5033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5033] write(3, "1000", 4) = 4 [pid 5033] close(3) = 0 [pid 5033] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5033] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5033] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5033] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5034 attached , parent_tid=[5034], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5034 [pid 5034] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5034] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5034] <... futex resumed>) = 0 [pid 5033] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5033] <... futex resumed>) = 0 [pid 5033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5033] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5033] <... futex resumed>) = 0 [pid 5033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5033] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5034] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5033] <... futex resumed>) = 0 [pid 5033] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5034] umount2("./file0", MNT_DETACH [pid 5033] <... futex resumed>) = 0 [pid 5033] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5033] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5034] <... umount2 resumed>) = 0 [pid 5033] <... mmap resumed>) = 0x7fc84e05e000 [pid 5034] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5033] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5034] <... futex resumed>) = 0 [pid 5033] <... mprotect resumed>) = 0 [pid 5033] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5034] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5035 attached [pid 5033] <... clone resumed>, parent_tid=[5035], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5035 [pid 5035] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5033] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5035] umount2("./file0", MNT_DETACH) = 0 [pid 5033] <... futex resumed>) = 0 [pid 5035] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5035] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5033] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5033] exit_group(0) = ? [pid 5035] <... futex resumed>) = ? [pid 5034] <... futex resumed>) = ? [pid 5035] +++ exited with 0 +++ [pid 5034] +++ exited with 0 +++ [pid 5033] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5033, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5036 attached , child_tidptr=0x5555564465d0) = 5036 [pid 5036] set_robust_list(0x5555564465e0, 24) = 0 [pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5036] setpgid(0, 0) = 0 [pid 5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1000", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5036] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5036] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5037 attached , parent_tid=[5037], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5037 [pid 5037] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5037] <... futex resumed>) = 0 [pid 5036] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5037] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5036] <... futex resumed>) = 0 [pid 5037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5037] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5036] <... futex resumed>) = 0 [pid 5037] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5036] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5037] <... mount resumed>) = 0 [pid 5037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5036] <... futex resumed>) = 0 [pid 5037] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5037] <... mount resumed>) = 0 [pid 5036] <... futex resumed>) = 0 [pid 5037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5036] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5037] <... futex resumed>) = 0 [pid 5036] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5037] umount2("./file0", MNT_DETACH [pid 5036] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5036] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5037] <... umount2 resumed>) = 0 [pid 5036] <... mmap resumed>) = 0x7fc84e05e000 [pid 5037] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5036] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5037] <... futex resumed>) = 0 [pid 5037] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5036] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5038 attached , parent_tid=[5038], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5038 [pid 5038] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5038] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5036] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5038] <... futex resumed>) = 0 [pid 5038] umount2("./file0", MNT_DETACH [pid 5036] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5038] <... umount2 resumed>) = 0 [pid 5038] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5038] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5036] <... futex resumed>) = 0 [pid 5036] exit_group(0) = ? [pid 5038] <... futex resumed>) = ? [pid 5037] <... futex resumed>) = ? [pid 5038] +++ exited with 0 +++ [pid 5037] +++ exited with 0 +++ [pid 5036] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5036, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5039 attached , child_tidptr=0x5555564465d0) = 5039 [pid 5039] set_robust_list(0x5555564465e0, 24) = 0 [pid 5039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5039] setpgid(0, 0) = 0 [pid 5039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5039] write(3, "1000", 4) = 4 [pid 5039] close(3) = 0 [pid 5039] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5039] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5039] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5040 attached , parent_tid=[5040], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5040 [pid 5039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5040] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5040] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5039] <... futex resumed>) = 0 [pid 5039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5040] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5039] <... futex resumed>) = 0 [pid 5039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5040] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5039] <... futex resumed>) = 0 [pid 5040] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5039] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5039] <... futex resumed>) = 0 [pid 5040] umount2("./file0", MNT_DETACH [pid 5039] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5040] <... umount2 resumed>) = 0 [pid 5039] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5039] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5039] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5041], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5041 [pid 5039] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5039] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5041 attached [pid 5041] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5041] umount2("./file0", MNT_DETACH [pid 5040] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5041] <... umount2 resumed>) = 0 [pid 5041] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5039] <... futex resumed>) = 0 [pid 5039] exit_group(0) = ? [pid 5040] <... futex resumed>) = ? [pid 5041] <... futex resumed>) = ? [pid 5040] +++ exited with 0 +++ [pid 5041] +++ exited with 0 +++ [pid 5039] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5039, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5042 attached , child_tidptr=0x5555564465d0) = 5042 [pid 5042] set_robust_list(0x5555564465e0, 24) = 0 [pid 5042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5042] setpgid(0, 0) = 0 [pid 5042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5042] write(3, "1000", 4) = 4 [pid 5042] close(3) = 0 [pid 5042] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5042] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5042] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5043 attached , parent_tid=[5043], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5043 [pid 5043] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5043] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5043] <... futex resumed>) = 0 [pid 5042] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5043] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5042] <... futex resumed>) = 0 [pid 5042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5042] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5043] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5042] <... futex resumed>) = 0 [pid 5042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5042] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5043] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5042] <... futex resumed>) = 0 [pid 5042] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5042] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5042] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5042] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5043] umount2("./file0", MNT_DETACH [pid 5042] <... clone resumed>, parent_tid=[5044], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5044 [pid 5042] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5042] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5044 attached [pid 5044] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5044] umount2("./file0", MNT_DETACH) = 0 [pid 5044] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5042] <... futex resumed>) = 0 [pid 5044] <... futex resumed>) = 1 [pid 5044] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5043] <... umount2 resumed>) = 0 [pid 5043] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5043] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5042] exit_group(0) = ? [pid 5043] <... futex resumed>) = ? [pid 5044] <... futex resumed>) = ? [pid 5043] +++ exited with 0 +++ [pid 5044] +++ exited with 0 +++ [pid 5042] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5042, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5045 ./strace-static-x86_64: Process 5045 attached [pid 5045] set_robust_list(0x5555564465e0, 24) = 0 [pid 5045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5045] setpgid(0, 0) = 0 [pid 5045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "1000", 4) = 4 [pid 5045] close(3) = 0 [pid 5045] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5045] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5045] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5046 attached , parent_tid=[5046], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5046 [pid 5045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5046] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5045] <... futex resumed>) = 0 [pid 5045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5045] <... futex resumed>) = 0 [pid 5045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5046] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5045] <... futex resumed>) = 0 [pid 5045] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5045] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5045] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5046] umount2("./file0", MNT_DETACH [pid 5045] <... clone resumed>, parent_tid=[5047], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5047 [pid 5046] <... umount2 resumed>) = 0 [pid 5045] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5045] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5047 attached [pid 5047] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5047] umount2("./file0", MNT_DETACH [pid 5046] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5047] <... umount2 resumed>) = 0 [pid 5046] <... futex resumed>) = 0 [pid 5047] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5046] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5047] <... futex resumed>) = 1 [pid 5047] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5045] <... futex resumed>) = 0 [pid 5045] exit_group(0) = ? [pid 5046] <... futex resumed>) = ? [pid 5047] <... futex resumed>) = ? [pid 5046] +++ exited with 0 +++ [pid 5047] +++ exited with 0 +++ [pid 5045] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5045, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5048 attached , child_tidptr=0x5555564465d0) = 5048 [pid 5048] set_robust_list(0x5555564465e0, 24) = 0 [pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5048] setpgid(0, 0) = 0 [pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5048] write(3, "1000", 4) = 4 [pid 5048] close(3) = 0 [pid 5048] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5048] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5048] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5049 attached , parent_tid=[5049], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5049 [pid 5048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5048] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5049] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5048] <... futex resumed>) = 0 [pid 5048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5048] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5048] <... futex resumed>) = 0 [pid 5048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5048] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5049] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5049] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5048] <... futex resumed>) = 0 [pid 5048] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5048] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5048] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5048] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5049] umount2("./file0", MNT_DETACH [pid 5048] <... clone resumed>, parent_tid=[5050], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5050 [pid 5048] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5050 attached [pid 5048] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5050] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5050] umount2("./file0", MNT_DETACH [pid 5049] <... umount2 resumed>) = 0 [pid 5049] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5049] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5050] <... umount2 resumed>) = 0 [pid 5050] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5048] <... futex resumed>) = 0 [pid 5048] exit_group(0) = ? [pid 5049] <... futex resumed>) = ? [pid 5049] +++ exited with 0 +++ [pid 5050] +++ exited with 0 +++ [pid 5048] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5048, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5051 ./strace-static-x86_64: Process 5051 attached [pid 5051] set_robust_list(0x5555564465e0, 24) = 0 [pid 5051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5051] setpgid(0, 0) = 0 [pid 5051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5051] write(3, "1000", 4) = 4 [pid 5051] close(3) = 0 [pid 5051] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5051] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5052 attached , parent_tid=[5052], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5052 [pid 5052] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5052] <... futex resumed>) = 0 [pid 5052] mkdir("./file0", 000 [pid 5051] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5052] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5051] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5052] <... futex resumed>) = 0 [pid 5052] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5051] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5052] <... mount resumed>) = 0 [pid 5052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5052] <... futex resumed>) = 0 [pid 5052] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5051] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5052] <... mount resumed>) = 0 [pid 5052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... futex resumed>) = 0 [pid 5051] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5052] <... futex resumed>) = 0 [pid 5052] umount2("./file0", MNT_DETACH [pid 5051] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5052] <... umount2 resumed>) = 0 [pid 5052] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5052] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5051] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5051] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5053 attached , parent_tid=[5053], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5053 [pid 5053] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5051] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5053] umount2("./file0", MNT_DETACH [pid 5051] <... futex resumed>) = 0 [pid 5051] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5053] <... umount2 resumed>) = 0 [pid 5053] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5053] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5051] <... futex resumed>) = 0 [pid 5051] exit_group(0 [pid 5052] <... futex resumed>) = ? [pid 5051] <... exit_group resumed>) = ? [pid 5053] <... futex resumed>) = ? [pid 5052] +++ exited with 0 +++ [pid 5053] +++ exited with 0 +++ [pid 5051] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5051, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5054 attached , child_tidptr=0x5555564465d0) = 5054 [pid 5054] set_robust_list(0x5555564465e0, 24) = 0 [pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5054] setpgid(0, 0) = 0 [pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1000", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5054] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5054] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5055 attached , parent_tid=[5055], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5055 [pid 5054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5055] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5055] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5054] <... futex resumed>) = 0 [pid 5054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5055] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5055] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5054] <... futex resumed>) = 0 [pid 5054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5055] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5054] <... futex resumed>) = 0 [pid 5054] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5054] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5055] umount2("./file0", MNT_DETACH [pid 5054] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5056], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5056 [pid 5054] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5054] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5056 attached [pid 5056] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5056] umount2("./file0", MNT_DETACH) = 0 [pid 5056] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5054] <... futex resumed>) = 0 [pid 5056] <... futex resumed>) = 1 [pid 5056] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5055] <... umount2 resumed>) = 0 [pid 5055] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5055] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5054] exit_group(0) = ? [pid 5056] <... futex resumed>) = ? [pid 5056] +++ exited with 0 +++ [pid 5055] <... futex resumed>) = ? [pid 5055] +++ exited with 0 +++ [pid 5054] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5054, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5057 ./strace-static-x86_64: Process 5057 attached [pid 5057] set_robust_list(0x5555564465e0, 24) = 0 [pid 5057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] setpgid(0, 0) = 0 [pid 5057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "1000", 4) = 4 [pid 5057] close(3) = 0 [pid 5057] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5057] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5057] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5058], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5058 [pid 5057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5058 attached [pid 5058] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5058] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5057] <... futex resumed>) = 0 [pid 5057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5058] <... futex resumed>) = 1 [pid 5058] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5057] <... futex resumed>) = 0 [pid 5057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5058] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5057] <... futex resumed>) = 0 [pid 5057] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5057] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5057] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5058] umount2("./file0", MNT_DETACH [pid 5057] <... clone resumed>, parent_tid=[5059], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5059 [pid 5057] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5057] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5059 attached [pid 5059] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5059] umount2("./file0", MNT_DETACH) = 0 [pid 5059] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5057] <... futex resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5059] <... futex resumed>) = 1 [pid 5058] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5059] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5058] <... futex resumed>) = 0 [pid 5058] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5057] exit_group(0) = ? [pid 5059] <... futex resumed>) = ? [pid 5059] +++ exited with 0 +++ [pid 5058] <... futex resumed>) = ? [pid 5058] +++ exited with 0 +++ [pid 5057] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5057, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5060 attached , child_tidptr=0x5555564465d0) = 5060 [pid 5060] set_robust_list(0x5555564465e0, 24) = 0 [pid 5060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5060] setpgid(0, 0) = 0 [pid 5060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5060] write(3, "1000", 4) = 4 [pid 5060] close(3) = 0 [pid 5060] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5060] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5060] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5061 attached [pid 5061] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5060] <... clone resumed>, parent_tid=[5061], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5061 [pid 5060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5061] <... futex resumed>) = 0 [pid 5061] mkdir("./file0", 000 [pid 5060] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5061] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5060] <... futex resumed>) = 0 [pid 5061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5060] <... futex resumed>) = 0 [pid 5061] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5060] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5061] <... mount resumed>) = 0 [pid 5061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5060] <... futex resumed>) = 0 [pid 5061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5060] <... futex resumed>) = 0 [pid 5061] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5060] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5061] <... mount resumed>) = 0 [pid 5061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5061] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5060] <... futex resumed>) = 0 [pid 5060] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5060] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5060] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5061] <... futex resumed>) = 0 [pid 5060] <... mprotect resumed>) = 0 [pid 5061] umount2("./file0", MNT_DETACH [pid 5060] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5062], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5062 [pid 5060] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5061] <... umount2 resumed>) = 0 [pid 5060] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5062 attached [pid 5062] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5062] umount2("./file0", MNT_DETACH) = 0 [pid 5061] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5062] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5061] <... futex resumed>) = 0 [pid 5060] <... futex resumed>) = 0 [pid 5060] exit_group(0) = ? [pid 5062] <... futex resumed>) = ? [pid 5061] +++ exited with 0 +++ [pid 5062] +++ exited with 0 +++ [pid 5060] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5060, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5063 attached , child_tidptr=0x5555564465d0) = 5063 [pid 5063] set_robust_list(0x5555564465e0, 24) = 0 [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5063] setpgid(0, 0) = 0 [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1000", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5063] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5063] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5064 attached , parent_tid=[5064], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5064 [pid 5064] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5064] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5064] <... futex resumed>) = 0 [pid 5063] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5063] <... futex resumed>) = 0 [pid 5064] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5064] <... mount resumed>) = 0 [pid 5064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5064] umount2("./file0", MNT_DETACH [pid 5063] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5063] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5064] <... umount2 resumed>) = 0 [pid 5063] <... clone resumed>, parent_tid=[5065], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5065 [pid 5063] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5064] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5063] <... futex resumed>) = 0 [pid 5063] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5065 attached [pid 5064] <... futex resumed>) = 0 [pid 5065] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5065] umount2("./file0", MNT_DETACH [pid 5064] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5065] <... umount2 resumed>) = 0 [pid 5065] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5063] <... futex resumed>) = 0 [pid 5065] <... futex resumed>) = 1 [pid 5065] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5063] exit_group(0) = ? [pid 5065] <... futex resumed>) = 231 [pid 5065] +++ exited with 0 +++ [pid 5064] <... futex resumed>) = ? [pid 5064] +++ exited with 0 +++ [pid 5063] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5066 attached , child_tidptr=0x5555564465d0) = 5066 [pid 5066] set_robust_list(0x5555564465e0, 24) = 0 [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5066] setpgid(0, 0) = 0 [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5066] write(3, "1000", 4) = 4 [pid 5066] close(3) = 0 [pid 5066] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5066] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5066] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5067 attached , parent_tid=[5067], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5067 [pid 5067] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5067] <... futex resumed>) = 0 [pid 5066] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5067] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5066] <... futex resumed>) = 0 [pid 5067] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5067] <... mount resumed>) = 0 [pid 5066] <... futex resumed>) = 0 [pid 5067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5066] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5067] <... futex resumed>) = 0 [pid 5066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5067] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5066] <... futex resumed>) = 0 [pid 5066] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5067] <... mount resumed>) = 0 [pid 5067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5066] <... futex resumed>) = 0 [pid 5067] umount2("./file0", MNT_DETACH [pid 5066] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5067] <... umount2 resumed>) = 0 [pid 5067] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5066] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5067] <... futex resumed>) = 0 [pid 5066] <... futex resumed>) = 0 [pid 5067] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5066] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5066] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5068 attached , parent_tid=[5068], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5068 [pid 5068] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5068] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5066] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5068] <... futex resumed>) = 0 [pid 5068] umount2("./file0", MNT_DETACH [pid 5066] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5068] <... umount2 resumed>) = 0 [pid 5068] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5068] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5066] <... futex resumed>) = 0 [pid 5066] exit_group(0) = ? [pid 5067] <... futex resumed>) = ? [pid 5068] <... futex resumed>) = ? [pid 5067] +++ exited with 0 +++ [pid 5068] +++ exited with 0 +++ [pid 5066] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5069 ./strace-static-x86_64: Process 5069 attached [pid 5069] set_robust_list(0x5555564465e0, 24) = 0 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5069] setpgid(0, 0) = 0 [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5069] write(3, "1000", 4) = 4 [pid 5069] close(3) = 0 [pid 5069] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5069] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5069] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5069] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5070 attached , parent_tid=[5070], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5070 [pid 5070] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5070] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5070] <... futex resumed>) = 0 [pid 5069] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5070] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5069] <... futex resumed>) = 0 [pid 5069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5069] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5070] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5069] <... futex resumed>) = 0 [pid 5069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5069] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5070] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5069] <... futex resumed>) = 0 [pid 5070] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5069] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5069] <... futex resumed>) = 0 [pid 5070] umount2("./file0", MNT_DETACH [pid 5069] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5069] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5070] <... umount2 resumed>) = 0 [pid 5069] <... mmap resumed>) = 0x7fc84e05e000 [pid 5070] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5069] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5070] <... futex resumed>) = 0 [pid 5069] <... mprotect resumed>) = 0 [pid 5070] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5069] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5071 attached , parent_tid=[5071], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5071 [pid 5071] set_robust_list(0x7fc84e07e9e0, 24 [pid 5069] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5071] <... set_robust_list resumed>) = 0 [pid 5069] <... futex resumed>) = 0 [pid 5071] umount2("./file0", MNT_DETACH [pid 5069] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5071] <... umount2 resumed>) = 0 [pid 5071] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5069] <... futex resumed>) = 0 [pid 5071] <... futex resumed>) = 1 [pid 5069] exit_group(0 [pid 5071] ????( [pid 5070] <... futex resumed>) = 231 [pid 5069] <... exit_group resumed>) = ? [pid 5071] <... ???? resumed>) = ? [pid 5070] +++ exited with 0 +++ [pid 5071] +++ exited with 0 +++ [pid 5069] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5072 attached , child_tidptr=0x5555564465d0) = 5072 [pid 5072] set_robust_list(0x5555564465e0, 24) = 0 [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5072] setpgid(0, 0) = 0 [pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1000", 4) = 4 [pid 5072] close(3) = 0 [pid 5072] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5072] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5072] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5073 attached , parent_tid=[5073], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5073 [pid 5073] set_robust_list(0x7fc84e09f9e0, 24 [pid 5072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5073] <... set_robust_list resumed>) = 0 [pid 5072] <... futex resumed>) = 0 [pid 5073] mkdir("./file0", 000 [pid 5072] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5073] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5072] <... futex resumed>) = 0 [pid 5073] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5073] <... mount resumed>) = 0 [pid 5072] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5072] <... futex resumed>) = 0 [pid 5073] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5072] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5073] <... mount resumed>) = 0 [pid 5073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5072] <... futex resumed>) = 0 [pid 5073] umount2("./file0", MNT_DETACH [pid 5072] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5072] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5073] <... umount2 resumed>) = 0 [pid 5072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5073] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5072] <... mmap resumed>) = 0x7fc84e05e000 [pid 5073] <... futex resumed>) = 0 [pid 5073] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5072] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5072] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5074 attached [pid 5074] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5074] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5072] <... clone resumed>, parent_tid=[5074], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5074 [pid 5072] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5074] <... futex resumed>) = 0 [pid 5074] umount2("./file0", MNT_DETACH) = 0 [pid 5074] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5074] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5072] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5072] exit_group(0 [pid 5073] <... futex resumed>) = ? [pid 5072] <... exit_group resumed>) = ? [pid 5073] +++ exited with 0 +++ [pid 5074] <... futex resumed>) = ? [pid 5074] +++ exited with 0 +++ [pid 5072] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5075 ./strace-static-x86_64: Process 5075 attached [pid 5075] set_robust_list(0x5555564465e0, 24) = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] setpgid(0, 0) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1000", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5075] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5075] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5075] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5076 attached [pid 5076] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5076] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5075] <... clone resumed>, parent_tid=[5076], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5076 [pid 5075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5076] <... futex resumed>) = 0 [pid 5075] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5076] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5075] <... futex resumed>) = 0 [pid 5076] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5075] <... futex resumed>) = 0 [pid 5076] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5075] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5076] <... mount resumed>) = 0 [pid 5076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5075] <... futex resumed>) = 0 [pid 5075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5075] <... futex resumed>) = 0 [pid 5076] <... mount resumed>) = 0 [pid 5075] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5076] <... futex resumed>) = 0 [pid 5075] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] umount2("./file0", MNT_DETACH [pid 5075] <... futex resumed>) = 0 [pid 5075] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... umount2 resumed>) = 0 [pid 5075] <... futex resumed>) = 0 [pid 5076] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5076] <... futex resumed>) = 0 [pid 5075] <... mmap resumed>) = 0x7fc84e05e000 [pid 5076] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5075] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5075] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5077 attached , parent_tid=[5077], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5077 [pid 5077] set_robust_list(0x7fc84e07e9e0, 24 [pid 5075] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5077] <... set_robust_list resumed>) = 0 [pid 5075] <... futex resumed>) = 0 [pid 5077] umount2("./file0", MNT_DETACH [pid 5075] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5077] <... umount2 resumed>) = 0 [pid 5077] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] <... futex resumed>) = 0 [pid 5077] <... futex resumed>) = 1 [pid 5077] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5075] exit_group(0) = ? [pid 5076] <... futex resumed>) = 231 [pid 5077] <... futex resumed>) = ? [pid 5076] +++ exited with 0 +++ [pid 5077] +++ exited with 0 +++ [pid 5075] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5078 ./strace-static-x86_64: Process 5078 attached [pid 5078] set_robust_list(0x5555564465e0, 24) = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setpgid(0, 0) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1000", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5078] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5078] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5079 attached [pid 5079] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5078] <... clone resumed>, parent_tid=[5079], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5079 [pid 5078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5079] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5078] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] <... futex resumed>) = 0 [pid 5078] <... futex resumed>) = 1 [pid 5079] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5078] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5079] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5078] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5078] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5078] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5079] <... futex resumed>) = 0 [pid 5079] umount2("./file0", MNT_DETACH) = 0 [pid 5078] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5079] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5078] <... futex resumed>) = 0 [pid 5078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5078] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5078] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5080 attached , parent_tid=[5080], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5080 [pid 5080] set_robust_list(0x7fc84e07e9e0, 24 [pid 5078] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5078] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5080] <... set_robust_list resumed>) = 0 [pid 5080] umount2("./file0", MNT_DETACH) = 0 [pid 5080] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5078] <... futex resumed>) = 0 [pid 5078] exit_group(0) = ? [pid 5079] <... futex resumed>) = ? [pid 5079] +++ exited with 0 +++ [pid 5080] +++ exited with 0 +++ [pid 5078] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5081 ./strace-static-x86_64: Process 5081 attached [pid 5081] set_robust_list(0x5555564465e0, 24) = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setpgid(0, 0) = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1000", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5081] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5081] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5082], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5082 [pid 5081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5082] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] <... futex resumed>) = 0 [pid 5081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5082] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] <... futex resumed>) = 0 [pid 5081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5082] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5081] <... futex resumed>) = 0 [pid 5081] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5081] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5081] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5083], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5083 [pid 5082] umount2("./file0", MNT_DETACH [pid 5081] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5081] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5083 attached [pid 5083] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5083] umount2("./file0", MNT_DETACH [pid 5082] <... umount2 resumed>) = 0 [pid 5082] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... umount2 resumed>) = 0 [pid 5083] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... futex resumed>) = 0 [pid 5081] exit_group(0) = ? [pid 5083] <... futex resumed>) = ? [pid 5083] +++ exited with 0 +++ [pid 5082] <... futex resumed>) = ? [pid 5082] +++ exited with 0 +++ [pid 5081] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5084 attached , child_tidptr=0x5555564465d0) = 5084 [pid 5084] set_robust_list(0x5555564465e0, 24) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5084] setpgid(0, 0) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5084] write(3, "1000", 4) = 4 [pid 5084] close(3) = 0 [pid 5084] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5084] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5084] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5085], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5085 [pid 5084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5084] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5085 attached [pid 5085] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5085] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5084] <... futex resumed>) = 0 [pid 5084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5084] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] <... futex resumed>) = 1 [pid 5085] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5084] <... futex resumed>) = 0 [pid 5085] <... futex resumed>) = 1 [pid 5084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5084] <... futex resumed>) = 0 [pid 5084] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] <... mount resumed>) = 0 [pid 5085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5084] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] umount2("./file0", MNT_DETACH [pid 5084] <... futex resumed>) = 0 [pid 5084] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5085] <... umount2 resumed>) = 0 [pid 5084] <... mmap resumed>) = 0x7fc84e05e000 [pid 5085] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5084] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5085] <... futex resumed>) = 0 [pid 5084] <... mprotect resumed>) = 0 [pid 5085] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5086 attached , parent_tid=[5086], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5086 [pid 5086] set_robust_list(0x7fc84e07e9e0, 24 [pid 5084] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... set_robust_list resumed>) = 0 [pid 5084] <... futex resumed>) = 0 [pid 5086] umount2("./file0", MNT_DETACH [pid 5084] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5086] <... umount2 resumed>) = 0 [pid 5086] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5086] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] exit_group(0 [pid 5085] <... futex resumed>) = ? [pid 5084] <... exit_group resumed>) = ? [pid 5085] +++ exited with 0 +++ [pid 5086] <... futex resumed>) = ? [pid 5086] +++ exited with 0 +++ [pid 5084] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5087 attached , child_tidptr=0x5555564465d0) = 5087 [pid 5087] set_robust_list(0x5555564465e0, 24) = 0 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5087] setpgid(0, 0) = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5087] write(3, "1000", 4) = 4 [pid 5087] close(3) = 0 [pid 5087] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5087] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5087] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5088 attached , parent_tid=[5088], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5088 [pid 5087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] set_robust_list(0x7fc84e09f9e0, 24 [pid 5087] <... futex resumed>) = 0 [pid 5087] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] <... set_robust_list resumed>) = 0 [pid 5088] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5087] <... futex resumed>) = 0 [pid 5087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5087] <... futex resumed>) = 0 [pid 5087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5088] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5087] <... futex resumed>) = 0 [pid 5087] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5087] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5087] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5088] umount2("./file0", MNT_DETACH [pid 5087] <... clone resumed>, parent_tid=[5089], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5089 [pid 5087] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5087] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5089 attached [pid 5089] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5089] umount2("./file0", MNT_DETACH) = 0 [pid 5089] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5087] <... futex resumed>) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5089] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5088] <... umount2 resumed>) = 0 [pid 5088] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5088] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5087] exit_group(0) = ? [pid 5089] <... futex resumed>) = 231 [pid 5089] +++ exited with 0 +++ [pid 5088] <... futex resumed>) = ? [pid 5088] +++ exited with 0 +++ [pid 5087] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x5555564465e0, 24) = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5090] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5090] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5091 attached [pid 5091] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5091] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] <... clone resumed>, parent_tid=[5091], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5091 [pid 5090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5091] <... futex resumed>) = 0 [pid 5091] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5091] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5091] <... futex resumed>) = 0 [pid 5091] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5090] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] <... mount resumed>) = 0 [pid 5091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5090] <... futex resumed>) = 0 [pid 5090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5090] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5090] <... futex resumed>) = 0 [pid 5090] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5090] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5090] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5090] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5091] umount2("./file0", MNT_DETACH) = 0 [pid 5090] <... clone resumed>, parent_tid=[5092], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5092 [pid 5090] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5091] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5092] umount2("./file0", MNT_DETACH [pid 5091] <... futex resumed>) = 0 [pid 5091] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5092] <... umount2 resumed>) = 0 [pid 5092] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] <... futex resumed>) = 0 [pid 5092] <... futex resumed>) = 1 [pid 5090] exit_group(0 [pid 5092] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 (errno 18446744073709551414) [pid 5090] <... exit_group resumed>) = ? [pid 5091] <... futex resumed>) = ? [pid 5091] +++ exited with 0 +++ [pid 5092] +++ exited with 0 +++ [pid 5090] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5093 ./strace-static-x86_64: Process 5093 attached [pid 5093] set_robust_list(0x5555564465e0, 24) = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5093] write(3, "1000", 4) = 4 [pid 5093] close(3) = 0 [pid 5093] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5093] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5093] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5094 attached , parent_tid=[5094], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5094 [pid 5093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5094] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5093] <... futex resumed>) = 0 [pid 5093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5093] <... futex resumed>) = 0 [pid 5093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5093] <... futex resumed>) = 0 [pid 5093] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] <... mount resumed>) = 0 [pid 5094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5093] <... futex resumed>) = 0 [pid 5093] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] umount2("./file0", MNT_DETACH [pid 5093] <... futex resumed>) = 0 [pid 5093] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5093] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5093] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5094] <... umount2 resumed>) = 0 [pid 5093] <... clone resumed>, parent_tid=[5095], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5095 [pid 5093] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5093] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5095 attached ) = 0 [pid 5095] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5095] umount2("./file0", MNT_DETACH [pid 5094] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5095] <... umount2 resumed>) = 0 [pid 5095] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5095] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5093] <... futex resumed>) = 0 [pid 5093] exit_group(0) = ? [pid 5094] <... futex resumed>) = ? [pid 5094] +++ exited with 0 +++ [pid 5095] <... futex resumed>) = ? [pid 5095] +++ exited with 0 +++ [pid 5093] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5096] set_robust_list(0x5555564465e0, 24) = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5096] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5096] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5097], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5097 [pid 5096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5097 attached [pid 5097] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5097] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = 0 [pid 5096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5097] <... futex resumed>) = 1 [pid 5097] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5096] <... futex resumed>) = 0 [pid 5096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5097] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5096] <... futex resumed>) = 0 [pid 5096] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5096] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5096] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5098 attached , parent_tid=[5098], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5098 [pid 5098] set_robust_list(0x7fc84e07e9e0, 24 [pid 5096] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5098] <... set_robust_list resumed>) = 0 [pid 5098] umount2("./file0", MNT_DETACH [pid 5096] <... futex resumed>) = 0 [pid 5096] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5098] <... umount2 resumed>) = 0 [pid 5098] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5096] <... futex resumed>) = 0 [pid 5098] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5097] umount2("./file0", MNT_DETACH) = 0 [pid 5097] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5096] exit_group(0) = ? [pid 5098] <... futex resumed>) = ? [pid 5097] +++ exited with 0 +++ [pid 5098] +++ exited with 0 +++ [pid 5096] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5099 ./strace-static-x86_64: Process 5099 attached [pid 5099] set_robust_list(0x5555564465e0, 24) = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5099] setpgid(0, 0) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5099] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5099] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5100], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5100 ./strace-static-x86_64: Process 5100 attached [pid 5099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5100] set_robust_list(0x7fc84e09f9e0, 24 [pid 5099] <... futex resumed>) = 0 [pid 5100] <... set_robust_list resumed>) = 0 [pid 5099] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5100] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5099] <... futex resumed>) = 0 [pid 5099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5099] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5100] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5099] <... futex resumed>) = 0 [pid 5100] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5099] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5100] <... mount resumed>) = 0 [pid 5100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5099] <... futex resumed>) = 0 [pid 5100] umount2("./file0", MNT_DETACH [pid 5099] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5099] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5100] <... umount2 resumed>) = 0 [pid 5100] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5099] <... mmap resumed>) = 0x7fc84e05e000 [pid 5100] <... futex resumed>) = 0 [pid 5099] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5100] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5099] <... mprotect resumed>) = 0 [pid 5099] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5101 attached , parent_tid=[5101], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5101 [pid 5101] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5101] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5099] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5101] <... futex resumed>) = 0 [pid 5101] umount2("./file0", MNT_DETACH [pid 5099] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5101] <... umount2 resumed>) = 0 [pid 5101] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5101] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5099] exit_group(0 [pid 5100] <... futex resumed>) = ? [pid 5099] <... exit_group resumed>) = ? [pid 5101] <... futex resumed>) = ? [pid 5101] +++ exited with 0 +++ [pid 5100] +++ exited with 0 +++ [pid 5099] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5102 ./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x5555564465e0, 24) = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5102] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5102] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5103 attached , parent_tid=[5103], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5103 [pid 5102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5103] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5103] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5102] <... futex resumed>) = 0 [pid 5103] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5103] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5102] <... futex resumed>) = 0 [pid 5102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5103] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5102] <... futex resumed>) = 0 [pid 5102] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5103] umount2("./file0", MNT_DETACH [pid 5102] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5102] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5103] <... umount2 resumed>) = 0 [pid 5103] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5102] <... mprotect resumed>) = 0 [pid 5102] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5103] <... futex resumed>) = 0 [pid 5103] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5102] <... clone resumed>, parent_tid=[5104], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5104 [pid 5102] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5102] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5104 attached [pid 5104] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5104] umount2("./file0", MNT_DETACH) = 0 [pid 5104] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5104] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5102] <... futex resumed>) = 0 [pid 5102] exit_group(0) = ? [pid 5104] <... futex resumed>) = ? [pid 5103] <... futex resumed>) = ? [pid 5103] +++ exited with 0 +++ [pid 5104] +++ exited with 0 +++ [pid 5102] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5105 ./strace-static-x86_64: Process 5105 attached [pid 5105] set_robust_list(0x5555564465e0, 24) = 0 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5105] setpgid(0, 0) = 0 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5105] write(3, "1000", 4) = 4 [pid 5105] close(3) = 0 [pid 5105] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5105] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5105] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5106 attached , parent_tid=[5106], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5106 [pid 5106] set_robust_list(0x7fc84e09f9e0, 24 [pid 5105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5106] <... set_robust_list resumed>) = 0 [pid 5105] <... futex resumed>) = 0 [pid 5106] mkdir("./file0", 000 [pid 5105] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5106] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5105] <... futex resumed>) = 0 [pid 5105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5106] <... futex resumed>) = 1 [pid 5106] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5105] <... futex resumed>) = 0 [pid 5105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5106] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5105] <... futex resumed>) = 0 [pid 5105] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5105] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5105] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5107], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5107 [pid 5105] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5105] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5107 attached [pid 5107] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5107] umount2("./file0", MNT_DETACH [pid 5106] umount2("./file0", MNT_DETACH [pid 5107] <... umount2 resumed>) = 0 [pid 5107] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5105] <... futex resumed>) = 0 [pid 5107] <... futex resumed>) = 1 [pid 5107] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5106] <... umount2 resumed>) = 0 [pid 5106] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5106] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5105] exit_group(0) = ? [pid 5107] <... futex resumed>) = 231 [pid 5107] +++ exited with 0 +++ [pid 5106] <... futex resumed>) = ? [pid 5106] +++ exited with 0 +++ [pid 5105] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5108 ./strace-static-x86_64: Process 5108 attached [pid 5108] set_robust_list(0x5555564465e0, 24) = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5108] setpgid(0, 0) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5108] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5108] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5109 attached , parent_tid=[5109], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5109 [pid 5108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5109] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5109] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5108] <... futex resumed>) = 0 [pid 5108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5109] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5108] <... futex resumed>) = 0 [pid 5108] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5109] <... mount resumed>) = 0 [pid 5109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5108] <... futex resumed>) = 0 [pid 5108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5109] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5108] <... futex resumed>) = 0 [pid 5108] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5108] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5108] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5110], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5110 [pid 5109] umount2("./file0", MNT_DETACH [pid 5108] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5108] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5110 attached [pid 5110] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5110] umount2("./file0", MNT_DETACH [pid 5109] <... umount2 resumed>) = 0 [pid 5109] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5110] <... umount2 resumed>) = 0 [pid 5110] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5108] <... futex resumed>) = 0 [pid 5108] exit_group(0) = ? [pid 5110] <... futex resumed>) = ? [pid 5109] <... futex resumed>) = ? [pid 5110] +++ exited with 0 +++ [pid 5109] +++ exited with 0 +++ [pid 5108] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5111 ./strace-static-x86_64: Process 5111 attached [pid 5111] set_robust_list(0x5555564465e0, 24) = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5111] setpgid(0, 0) = 0 [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5111] write(3, "1000", 4) = 4 [pid 5111] close(3) = 0 [pid 5111] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5111] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5111] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5111] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5112], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5112 [pid 5111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5111] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5112 attached [pid 5112] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5112] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] <... futex resumed>) = 0 [pid 5111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5111] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5112] <... futex resumed>) = 1 [pid 5112] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] <... futex resumed>) = 0 [pid 5112] <... futex resumed>) = 1 [pid 5111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5112] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5111] <... futex resumed>) = 0 [pid 5111] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5112] <... mount resumed>) = 0 [pid 5112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5111] <... futex resumed>) = 0 [pid 5111] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5111] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5111] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5111] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5111] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5112] umount2("./file0", MNT_DETACH [pid 5111] <... clone resumed>, parent_tid=[5113], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5113 [pid 5111] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5113 attached ) = 0 [pid 5111] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5113] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5113] umount2("./file0", MNT_DETACH [pid 5112] <... umount2 resumed>) = 0 [pid 5113] <... umount2 resumed>) = 0 [pid 5113] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5111] <... futex resumed>) = 0 [pid 5113] <... futex resumed>) = 1 [pid 5113] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5112] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5112] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5111] exit_group(0) = ? [pid 5113] <... futex resumed>) = ? [pid 5113] +++ exited with 0 +++ [pid 5112] <... futex resumed>) = ? [pid 5112] +++ exited with 0 +++ [pid 5111] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5114 ./strace-static-x86_64: Process 5114 attached [pid 5114] set_robust_list(0x5555564465e0, 24) = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5114] write(3, "1000", 4) = 4 [pid 5114] close(3) = 0 [pid 5114] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5114] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5114] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5115], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5115 [pid 5114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5115 attached [pid 5115] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5115] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... futex resumed>) = 0 [pid 5114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5115] <... futex resumed>) = 1 [pid 5115] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5114] <... futex resumed>) = 0 [pid 5114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5115] <... futex resumed>) = 1 [pid 5115] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5114] <... futex resumed>) = 0 [pid 5115] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5114] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5114] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5114] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5115] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 5116 attached [pid 5114] <... clone resumed>, parent_tid=[5116], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5116 [pid 5114] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5114] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5116] set_robust_list(0x7fc84e07e9e0, 24 [pid 5115] umount2("./file0", MNT_DETACH [pid 5116] <... set_robust_list resumed>) = 0 [pid 5116] umount2("./file0", MNT_DETACH) = 0 [pid 5116] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5115] <... umount2 resumed>) = 0 [pid 5114] <... futex resumed>) = 0 [pid 5116] <... futex resumed>) = 1 [pid 5116] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5115] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5115] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5114] exit_group(0) = ? [pid 5115] <... futex resumed>) = ? [pid 5116] <... futex resumed>) = ? [pid 5116] +++ exited with 0 +++ [pid 5115] +++ exited with 0 +++ [pid 5114] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5117 attached , child_tidptr=0x5555564465d0) = 5117 [pid 5117] set_robust_list(0x5555564465e0, 24) = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5117] setpgid(0, 0) = 0 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5117] write(3, "1000", 4) = 4 [pid 5117] close(3) = 0 [pid 5117] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5117] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5117] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5118 attached [pid 5118] set_robust_list(0x7fc84e09f9e0, 24 [pid 5117] <... clone resumed>, parent_tid=[5118], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5118 [pid 5118] <... set_robust_list resumed>) = 0 [pid 5117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5118] mkdir("./file0", 000 [pid 5117] <... futex resumed>) = 0 [pid 5117] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5118] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5117] <... futex resumed>) = 0 [pid 5118] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5118] <... mount resumed>) = 0 [pid 5118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5117] <... futex resumed>) = 0 [pid 5117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5118] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5117] <... futex resumed>) = 0 [pid 5117] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5118] <... mount resumed>) = 0 [pid 5118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5117] <... futex resumed>) = 0 [pid 5117] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5118] umount2("./file0", MNT_DETACH [pid 5117] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5117] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5119], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5119 [pid 5118] <... umount2 resumed>) = 0 [pid 5117] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5117] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5119 attached [pid 5118] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5119] set_robust_list(0x7fc84e07e9e0, 24 [pid 5118] <... futex resumed>) = 0 [pid 5119] <... set_robust_list resumed>) = 0 [pid 5118] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5119] umount2("./file0", MNT_DETACH) = 0 [pid 5119] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5117] <... futex resumed>) = 0 [pid 5119] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5117] exit_group(0 [pid 5118] <... futex resumed>) = ? [pid 5117] <... exit_group resumed>) = ? [pid 5119] <... futex resumed>) = ? [pid 5118] +++ exited with 0 +++ [pid 5119] +++ exited with 0 +++ [pid 5117] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5120 ./strace-static-x86_64: Process 5120 attached [pid 5120] set_robust_list(0x5555564465e0, 24) = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3) = 0 [pid 5120] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5120] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5120] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5121 attached [pid 5121] set_robust_list(0x7fc84e09f9e0, 24 [pid 5120] <... clone resumed>, parent_tid=[5121], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5121 [pid 5121] <... set_robust_list resumed>) = 0 [pid 5121] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5121] <... futex resumed>) = 0 [pid 5120] <... futex resumed>) = 1 [pid 5121] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5121] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5120] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5121] <... futex resumed>) = 0 [pid 5120] <... futex resumed>) = 1 [pid 5121] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5120] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5121] <... mount resumed>) = 0 [pid 5121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5120] <... futex resumed>) = 0 [pid 5121] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5121] <... mount resumed>) = 0 [pid 5120] <... futex resumed>) = 0 [pid 5121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5120] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5121] <... futex resumed>) = 0 [pid 5120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5121] umount2("./file0", MNT_DETACH [pid 5120] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5121] <... umount2 resumed>) = 0 [pid 5120] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5121] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5120] <... futex resumed>) = 0 [pid 5121] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5120] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5120] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5122 attached , parent_tid=[5122], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5122 [pid 5122] set_robust_list(0x7fc84e07e9e0, 24 [pid 5120] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5122] <... set_robust_list resumed>) = 0 [pid 5120] <... futex resumed>) = 0 [pid 5122] umount2("./file0", MNT_DETACH [pid 5120] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5122] <... umount2 resumed>) = 0 [pid 5122] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5120] <... futex resumed>) = 0 [pid 5122] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5120] exit_group(0 [pid 5121] <... futex resumed>) = ? [pid 5120] <... exit_group resumed>) = ? [pid 5121] +++ exited with 0 +++ [pid 5122] <... futex resumed>) = ? [pid 5122] +++ exited with 0 +++ [pid 5120] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5123 ./strace-static-x86_64: Process 5123 attached [pid 5123] set_robust_list(0x5555564465e0, 24) = 0 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5123] setpgid(0, 0) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5123] write(3, "1000", 4) = 4 [pid 5123] close(3) = 0 [pid 5123] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5123] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5123] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5124], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5124 [pid 5123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5124 attached [pid 5124] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5124] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5123] <... futex resumed>) = 0 [pid 5123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5124] <... futex resumed>) = 1 [pid 5124] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5123] <... futex resumed>) = 0 [pid 5124] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5124] <... mount resumed>) = 0 [pid 5124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5123] <... futex resumed>) = 0 [pid 5123] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5123] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5124] umount2("./file0", MNT_DETACH [pid 5123] <... futex resumed>) = 0 [pid 5123] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5123] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5123] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5125], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5125 ./strace-static-x86_64: Process 5125 attached [pid 5123] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5125] set_robust_list(0x7fc84e07e9e0, 24 [pid 5123] <... futex resumed>) = 0 [pid 5125] <... set_robust_list resumed>) = 0 [pid 5123] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5124] <... umount2 resumed>) = 0 [pid 5125] umount2("./file0", MNT_DETACH [pid 5124] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5125] <... umount2 resumed>) = 0 [pid 5125] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5123] <... futex resumed>) = 0 [pid 5125] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5123] exit_group(0) = ? [pid 5125] <... futex resumed>) = ? [pid 5125] +++ exited with 0 +++ [pid 5124] +++ exited with 0 +++ [pid 5123] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5126 ./strace-static-x86_64: Process 5126 attached [pid 5126] set_robust_list(0x5555564465e0, 24) = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] setpgid(0, 0) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5126] write(3, "1000", 4) = 4 [pid 5126] close(3) = 0 [pid 5126] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5126] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5126] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5127 attached [pid 5127] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5127] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5126] <... clone resumed>, parent_tid=[5127], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5127 [pid 5127] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5127] mkdir("./file0", 000 [pid 5126] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5127] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = 0 [pid 5126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5126] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5127] <... futex resumed>) = 1 [pid 5127] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = 0 [pid 5126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5126] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5127] <... futex resumed>) = 1 [pid 5127] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5126] <... futex resumed>) = 0 [pid 5126] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5127] <... futex resumed>) = 1 [pid 5126] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5127] umount2("./file0", MNT_DETACH [pid 5126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5126] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5126] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5128 attached [pid 5127] <... umount2 resumed>) = 0 [pid 5126] <... clone resumed>, parent_tid=[5128], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5128 [pid 5128] set_robust_list(0x7fc84e07e9e0, 24 [pid 5127] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5126] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5127] <... futex resumed>) = 0 [pid 5128] umount2("./file0", MNT_DETACH [pid 5126] <... futex resumed>) = 0 [pid 5127] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5126] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5128] <... umount2 resumed>) = 0 [pid 5128] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5126] <... futex resumed>) = 0 [pid 5128] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5126] exit_group(0 [pid 5127] <... futex resumed>) = ? [pid 5126] <... exit_group resumed>) = ? [pid 5127] +++ exited with 0 +++ [pid 5128] <... futex resumed>) = ? [pid 5128] +++ exited with 0 +++ [pid 5126] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5129 ./strace-static-x86_64: Process 5129 attached [pid 5129] set_robust_list(0x5555564465e0, 24) = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5129] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5129] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5130 attached , parent_tid=[5130], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5130 [pid 5129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5130] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5130] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = 0 [pid 5129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5130] <... futex resumed>) = 1 [pid 5129] <... futex resumed>) = 0 [pid 5129] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5130] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5129] <... futex resumed>) = 0 [pid 5129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5130] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5129] <... futex resumed>) = 0 [pid 5129] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5129] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5129] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5131], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5131 [pid 5129] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5129] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5131 attached [pid 5131] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5131] umount2("./file0", MNT_DETACH [pid 5130] umount2("./file0", MNT_DETACH [pid 5131] <... umount2 resumed>) = 0 [pid 5131] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5129] <... futex resumed>) = 0 [pid 5130] <... umount2 resumed>) = 0 [pid 5131] <... futex resumed>) = 1 [pid 5131] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5130] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5130] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5129] exit_group(0 [pid 5130] <... futex resumed>) = ? [pid 5129] <... exit_group resumed>) = ? [pid 5130] +++ exited with 0 +++ [pid 5131] <... futex resumed>) = ? [pid 5131] +++ exited with 0 +++ [pid 5129] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5132 attached , child_tidptr=0x5555564465d0) = 5132 [pid 5132] set_robust_list(0x5555564465e0, 24) = 0 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3) = 0 [pid 5132] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5132] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5132] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5133 attached , parent_tid=[5133], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5133 [pid 5133] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5133] <... futex resumed>) = 0 [pid 5133] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5132] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5133] <... futex resumed>) = 0 [pid 5133] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5132] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5133] <... futex resumed>) = 0 [pid 5133] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5132] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5133] <... mount resumed>) = 0 [pid 5133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5132] <... futex resumed>) = 0 [pid 5132] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5132] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5132] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5132] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5134 attached [pid 5133] umount2("./file0", MNT_DETACH [pid 5132] <... clone resumed>, parent_tid=[5134], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5134 [pid 5132] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5133] <... umount2 resumed>) = 0 [pid 5132] <... futex resumed>) = 0 [pid 5134] set_robust_list(0x7fc84e07e9e0, 24 [pid 5133] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5132] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5133] <... futex resumed>) = 0 [pid 5133] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5134] <... set_robust_list resumed>) = 0 [pid 5134] umount2("./file0", MNT_DETACH) = 0 [pid 5134] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5132] <... futex resumed>) = 0 [pid 5132] exit_group(0 [pid 5133] <... futex resumed>) = ? [pid 5132] <... exit_group resumed>) = ? [pid 5133] +++ exited with 0 +++ [pid 5134] +++ exited with 0 +++ [pid 5132] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5135 ./strace-static-x86_64: Process 5135 attached [pid 5135] set_robust_list(0x5555564465e0, 24) = 0 [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5135] setpgid(0, 0) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] write(3, "1000", 4) = 4 [pid 5135] close(3) = 0 [pid 5135] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5135] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5135] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5136 attached , parent_tid=[5136], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5136 [pid 5135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5136] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5136] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5136] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5135] <... futex resumed>) = 0 [pid 5135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5136] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5135] <... futex resumed>) = 0 [pid 5135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5136] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5135] <... futex resumed>) = 0 [pid 5135] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5135] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5135] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5136] umount2("./file0", MNT_DETACH) = 0 [pid 5135] <... clone resumed>, parent_tid=[5137], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5137 [pid 5135] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5135] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5137 attached [pid 5137] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5137] umount2("./file0", MNT_DETACH [pid 5136] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5137] <... umount2 resumed>) = 0 [pid 5136] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5137] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5135] <... futex resumed>) = 0 [pid 5135] exit_group(0) = ? [pid 5137] +++ exited with 0 +++ [pid 5136] <... futex resumed>) = ? [pid 5136] +++ exited with 0 +++ [pid 5135] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5138 attached , child_tidptr=0x5555564465d0) = 5138 [pid 5138] set_robust_list(0x5555564465e0, 24) = 0 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5138] setpgid(0, 0) = 0 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5138] write(3, "1000", 4) = 4 [pid 5138] close(3) = 0 [pid 5138] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5138] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5138] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5139 attached , parent_tid=[5139], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5139 [pid 5139] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5139] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5139] <... futex resumed>) = 0 [pid 5138] <... futex resumed>) = 1 [pid 5138] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5139] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5138] <... futex resumed>) = 0 [pid 5138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5138] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5139] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5138] <... futex resumed>) = 0 [pid 5138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5138] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5139] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5138] <... futex resumed>) = 0 [pid 5138] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5138] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5138] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5139] umount2("./file0", MNT_DETACH [pid 5138] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5140 attached [pid 5139] <... umount2 resumed>) = 0 [pid 5140] set_robust_list(0x7fc84e07e9e0, 24 [pid 5139] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... clone resumed>, parent_tid=[5140], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5140 [pid 5140] <... set_robust_list resumed>) = 0 [pid 5139] <... futex resumed>) = 0 [pid 5140] umount2("./file0", MNT_DETACH [pid 5138] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5139] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5138] <... futex resumed>) = 0 [pid 5140] <... umount2 resumed>) = 0 [pid 5138] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5140] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5140] <... futex resumed>) = 0 [pid 5138] exit_group(0 [pid 5140] ????( [pid 5139] <... futex resumed>) = ? [pid 5140] <... ???? resumed>) = -1 (errno 18446744073709551555) [pid 5138] <... exit_group resumed>) = ? [pid 5139] +++ exited with 0 +++ [pid 5140] +++ exited with 0 +++ [pid 5138] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5141 attached , child_tidptr=0x5555564465d0) = 5141 [pid 5141] set_robust_list(0x5555564465e0, 24) = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5141] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5141] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5142 attached , parent_tid=[5142], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5142 [pid 5141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5142] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5142] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] <... futex resumed>) = 0 [pid 5141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5142] <... futex resumed>) = 1 [pid 5142] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5141] <... futex resumed>) = 0 [pid 5141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5142] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5141] <... futex resumed>) = 0 [pid 5141] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5141] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5141] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5143], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5143 [pid 5141] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5141] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5143 attached [pid 5143] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5142] umount2("./file0", MNT_DETACH [pid 5143] umount2("./file0", MNT_DETACH) = 0 [pid 5143] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5141] <... futex resumed>) = 0 [pid 5143] <... futex resumed>) = 1 [pid 5143] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5142] <... umount2 resumed>) = 0 [pid 5142] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5142] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5141] exit_group(0) = ? [pid 5143] <... futex resumed>) = ? [pid 5142] <... futex resumed>) = ? [pid 5143] +++ exited with 0 +++ [pid 5142] +++ exited with 0 +++ [pid 5141] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5144 attached , child_tidptr=0x5555564465d0) = 5144 [pid 5144] set_robust_list(0x5555564465e0, 24) = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5144] setpgid(0, 0) = 0 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] write(3, "1000", 4) = 4 [pid 5144] close(3) = 0 [pid 5144] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5144] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5144] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5145 attached , parent_tid=[5145], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5145 [pid 5145] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5145] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5145] <... futex resumed>) = 0 [pid 5145] mkdir("./file0", 000 [pid 5144] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5145] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5144] <... futex resumed>) = 0 [pid 5145] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5144] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5145] <... mount resumed>) = 0 [pid 5145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5144] <... futex resumed>) = 0 [pid 5145] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5144] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5145] <... mount resumed>) = 0 [pid 5145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5144] <... futex resumed>) = 0 [pid 5145] umount2("./file0", MNT_DETACH [pid 5144] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5145] <... umount2 resumed>) = 0 [pid 5144] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5145] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5144] <... futex resumed>) = 0 [pid 5144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5145] <... futex resumed>) = 0 [pid 5145] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5144] <... mmap resumed>) = 0x7fc84e05e000 [pid 5144] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5144] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5146 attached , parent_tid=[5146], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5146 [pid 5144] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5146] set_robust_list(0x7fc84e07e9e0, 24 [pid 5144] <... futex resumed>) = 0 [pid 5146] <... set_robust_list resumed>) = 0 [pid 5146] umount2("./file0", MNT_DETACH [pid 5144] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5146] <... umount2 resumed>) = 0 [pid 5146] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5146] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5144] exit_group(0) = ? [pid 5145] <... futex resumed>) = ? [pid 5146] <... futex resumed>) = ? [pid 5145] +++ exited with 0 +++ [pid 5146] +++ exited with 0 +++ [pid 5144] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5147 ./strace-static-x86_64: Process 5147 attached [pid 5147] set_robust_list(0x5555564465e0, 24) = 0 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5147] setpgid(0, 0) = 0 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5147] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5147] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5147] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5148 attached , parent_tid=[5148], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5148 [pid 5148] set_robust_list(0x7fc84e09f9e0, 24 [pid 5147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] <... set_robust_list resumed>) = 0 [pid 5147] <... futex resumed>) = 0 [pid 5147] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5148] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] <... futex resumed>) = 0 [pid 5147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5147] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5148] <... futex resumed>) = 1 [pid 5148] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] <... futex resumed>) = 0 [pid 5148] <... futex resumed>) = 1 [pid 5147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5147] <... futex resumed>) = 0 [pid 5147] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5148] <... mount resumed>) = 0 [pid 5148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] <... futex resumed>) = 0 [pid 5148] <... futex resumed>) = 1 [pid 5147] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5148] umount2("./file0", MNT_DETACH [pid 5147] <... futex resumed>) = 0 [pid 5147] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5147] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5147] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5148] <... umount2 resumed>) = 0 [pid 5147] <... mprotect resumed>) = 0 [pid 5148] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5148] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5149 attached [pid 5148] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5149] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5147] <... clone resumed>, parent_tid=[5149], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5149 [pid 5149] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5147] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5149] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5147] <... futex resumed>) = 0 [pid 5149] umount2("./file0", MNT_DETACH [pid 5147] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5149] <... umount2 resumed>) = 0 [pid 5149] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5147] <... futex resumed>) = 0 [pid 5147] exit_group(0 [pid 5148] <... futex resumed>) = ? [pid 5147] <... exit_group resumed>) = ? [pid 5148] +++ exited with 0 +++ [pid 5149] <... futex resumed>) = ? [pid 5149] +++ exited with 0 +++ [pid 5147] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5150 ./strace-static-x86_64: Process 5150 attached [pid 5150] set_robust_list(0x5555564465e0, 24) = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5150] write(3, "1000", 4) = 4 [pid 5150] close(3) = 0 [pid 5150] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5150] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5150] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5151 attached , parent_tid=[5151], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5151 [pid 5150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5151] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5151] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5150] <... futex resumed>) = 0 [pid 5151] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5151] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5150] <... futex resumed>) = 0 [pid 5150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5151] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5150] <... futex resumed>) = 0 [pid 5150] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5150] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5150] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5152], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5152 [pid 5150] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5150] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5152 attached [pid 5152] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5152] umount2("./file0", MNT_DETACH) = 0 [pid 5152] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5150] <... futex resumed>) = 0 [pid 5152] <... futex resumed>) = 1 [pid 5152] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5151] umount2("./file0", MNT_DETACH) = 0 [pid 5151] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5151] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5150] exit_group(0) = ? [pid 5152] <... futex resumed>) = ? [pid 5152] +++ exited with 0 +++ [pid 5151] <... futex resumed>) = ? [pid 5151] +++ exited with 0 +++ [pid 5150] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5153 ./strace-static-x86_64: Process 5153 attached [pid 5153] set_robust_list(0x5555564465e0, 24) = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5153] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5153] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5154 attached , parent_tid=[5154], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5154 [pid 5154] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5154] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5154] <... futex resumed>) = 0 [pid 5153] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5154] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5154] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] <... futex resumed>) = 0 [pid 5153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5154] <... futex resumed>) = 0 [pid 5154] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5153] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5154] <... mount resumed>) = 0 [pid 5154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5153] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5154] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5153] <... futex resumed>) = 0 [pid 5154] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5153] <... futex resumed>) = 0 [pid 5154] umount2("./file0", MNT_DETACH [pid 5153] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5154] <... umount2 resumed>) = 0 [pid 5153] <... futex resumed>) = 0 [pid 5154] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5153] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5154] <... futex resumed>) = 0 [pid 5153] <... mmap resumed>) = 0x7fc84e05e000 [pid 5154] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5153] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5155 attached , parent_tid=[5155], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5155 [pid 5155] set_robust_list(0x7fc84e07e9e0, 24 [pid 5153] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5155] <... set_robust_list resumed>) = 0 [pid 5153] <... futex resumed>) = 0 [pid 5155] umount2("./file0", MNT_DETACH [pid 5153] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5155] <... umount2 resumed>) = 0 [pid 5155] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5153] <... futex resumed>) = 0 [pid 5155] <... futex resumed>) = 1 [pid 5155] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5153] exit_group(0) = ? [pid 5154] <... futex resumed>) = 231 [pid 5155] <... futex resumed>) = ? [pid 5154] +++ exited with 0 +++ [pid 5155] +++ exited with 0 +++ [pid 5153] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5156 ./strace-static-x86_64: Process 5156 attached [pid 5156] set_robust_list(0x5555564465e0, 24) = 0 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5156] setpgid(0, 0) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5156] write(3, "1000", 4) = 4 [pid 5156] close(3) = 0 [pid 5156] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5156] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5156] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5157 attached , parent_tid=[5157], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5157 [pid 5156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5157] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5157] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5157] <... futex resumed>) = 0 [pid 5157] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5156] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5156] <... futex resumed>) = 0 [pid 5156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5156] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5157] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5156] <... futex resumed>) = 0 [pid 5157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5156] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5156] <... futex resumed>) = 0 [pid 5157] umount2("./file0", MNT_DETACH [pid 5156] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5157] <... umount2 resumed>) = 0 [pid 5156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5157] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... mmap resumed>) = 0x7fc84e05e000 [pid 5157] <... futex resumed>) = 0 [pid 5156] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5157] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5156] <... mprotect resumed>) = 0 [pid 5156] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5158 attached , parent_tid=[5158], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5158 [pid 5158] set_robust_list(0x7fc84e07e9e0, 24 [pid 5156] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5158] <... set_robust_list resumed>) = 0 [pid 5156] <... futex resumed>) = 0 [pid 5158] umount2("./file0", MNT_DETACH [pid 5156] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5158] <... umount2 resumed>) = 0 [pid 5158] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5156] <... futex resumed>) = 0 [pid 5158] <... futex resumed>) = 1 [pid 5158] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5156] exit_group(0) = ? [pid 5157] <... futex resumed>) = 231 [pid 5158] <... futex resumed>) = ? [pid 5157] +++ exited with 0 +++ [pid 5158] +++ exited with 0 +++ [pid 5156] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5159 ./strace-static-x86_64: Process 5159 attached [pid 5159] set_robust_list(0x5555564465e0, 24) = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5159] setpgid(0, 0) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5159] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5159] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5160], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5160 [pid 5159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5160 attached [pid 5160] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5160] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5159] <... futex resumed>) = 0 [pid 5159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5160] <... futex resumed>) = 1 [pid 5159] <... futex resumed>) = 0 [pid 5160] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5159] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5160] <... mount resumed>) = 0 [pid 5160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5159] <... futex resumed>) = 0 [pid 5159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5160] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5159] <... futex resumed>) = 0 [pid 5159] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5159] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5159] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5160] umount2("./file0", MNT_DETACH [pid 5159] <... clone resumed>, parent_tid=[5161], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5161 [pid 5159] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5159] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5161 attached [pid 5160] <... umount2 resumed>) = 0 [pid 5161] set_robust_list(0x7fc84e07e9e0, 24 [pid 5160] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5161] <... set_robust_list resumed>) = 0 [pid 5160] <... futex resumed>) = 0 [pid 5161] umount2("./file0", MNT_DETACH [pid 5160] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5161] <... umount2 resumed>) = 0 [pid 5161] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5159] <... futex resumed>) = 0 [pid 5159] exit_group(0) = ? [pid 5160] <... futex resumed>) = ? [pid 5160] +++ exited with 0 +++ [pid 5161] +++ exited with 0 +++ [pid 5159] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5162 ./strace-static-x86_64: Process 5162 attached [pid 5162] set_robust_list(0x5555564465e0, 24) = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] setpgid(0, 0) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4) = 4 [pid 5162] close(3) = 0 [pid 5162] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5162] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5162] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5163 attached , parent_tid=[5163], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5163 [pid 5163] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5163] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] <... futex resumed>) = 0 [pid 5162] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5163] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] <... futex resumed>) = 0 [pid 5162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] <... futex resumed>) = 0 [pid 5163] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] <... futex resumed>) = 0 [pid 5162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5163] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5162] <... futex resumed>) = 0 [pid 5162] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5162] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5163] umount2("./file0", MNT_DETACH [pid 5162] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5164], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5164 [pid 5162] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5162] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5164 attached [pid 5164] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5164] umount2("./file0", MNT_DETACH) = 0 [pid 5164] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5162] <... futex resumed>) = 0 [pid 5163] <... umount2 resumed>) = 0 [pid 5164] <... futex resumed>) = 1 [pid 5164] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5163] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5163] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5162] exit_group(0) = ? [pid 5164] <... futex resumed>) = ? [pid 5163] <... futex resumed>) = ? [pid 5163] +++ exited with 0 +++ [pid 5164] +++ exited with 0 +++ [pid 5162] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5165 ./strace-static-x86_64: Process 5165 attached [pid 5165] set_robust_list(0x5555564465e0, 24) = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0) = 0 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5165] write(3, "1000", 4) = 4 [pid 5165] close(3) = 0 [pid 5165] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5165] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5165] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5166 attached , parent_tid=[5166], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5166 [pid 5165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5166] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] <... futex resumed>) = 0 [pid 5165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5166] <... futex resumed>) = 0 [pid 5166] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5165] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] <... mount resumed>) = 0 [pid 5166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5165] <... futex resumed>) = 0 [pid 5166] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5166] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5165] <... futex resumed>) = 0 [pid 5166] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5165] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5165] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5167], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5167 [pid 5165] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5165] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5167 attached [pid 5167] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5167] umount2("./file0", MNT_DETACH [pid 5166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5166] umount2("./file0", MNT_DETACH [pid 5167] <... umount2 resumed>) = 0 [pid 5167] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5165] <... futex resumed>) = 0 [pid 5167] <... futex resumed>) = 1 [pid 5166] <... umount2 resumed>) = 0 [pid 5167] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5166] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5166] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5165] exit_group(0) = ? [pid 5167] <... futex resumed>) = ? [pid 5166] <... futex resumed>) = 231 [pid 5167] +++ exited with 0 +++ [pid 5166] +++ exited with 0 +++ [pid 5165] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5168 ./strace-static-x86_64: Process 5168 attached [pid 5168] set_robust_list(0x5555564465e0, 24) = 0 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5168] setpgid(0, 0) = 0 [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5168] write(3, "1000", 4) = 4 [pid 5168] close(3) = 0 [pid 5168] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5168] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5168] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5169 attached , parent_tid=[5169], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5169 [pid 5169] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5169] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5169] mkdir("./file0", 000 [pid 5168] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5169] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5169] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5169] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5168] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5169] <... mount resumed>) = 0 [pid 5169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5168] <... futex resumed>) = 0 [pid 5169] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5169] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5168] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5169] <... mount resumed>) = 0 [pid 5169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] <... futex resumed>) = 0 [pid 5168] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5169] <... futex resumed>) = 0 [pid 5169] umount2("./file0", MNT_DETACH [pid 5168] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5169] <... umount2 resumed>) = 0 [pid 5168] <... futex resumed>) = 0 [pid 5169] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5169] <... futex resumed>) = 0 [pid 5168] <... mmap resumed>) = 0x7fc84e05e000 [pid 5169] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5168] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5170], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5170 ./strace-static-x86_64: Process 5170 attached [pid 5170] set_robust_list(0x7fc84e07e9e0, 24 [pid 5168] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5170] <... set_robust_list resumed>) = 0 [pid 5168] <... futex resumed>) = 0 [pid 5170] umount2("./file0", MNT_DETACH [pid 5168] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5170] <... umount2 resumed>) = 0 [pid 5170] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5168] <... futex resumed>) = 0 [pid 5170] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5168] exit_group(0) = ? [pid 5170] <... futex resumed>) = 231 [pid 5169] <... futex resumed>) = ? [pid 5169] +++ exited with 0 +++ [pid 5170] +++ exited with 0 +++ [pid 5168] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5171 ./strace-static-x86_64: Process 5171 attached [pid 5171] set_robust_list(0x5555564465e0, 24) = 0 [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5171] setpgid(0, 0) = 0 [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5171] write(3, "1000", 4) = 4 [pid 5171] close(3) = 0 [pid 5171] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5171] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5171] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5172 attached , parent_tid=[5172], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5172 [pid 5172] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5172] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5172] <... futex resumed>) = 0 [pid 5172] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5171] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5171] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5172] <... futex resumed>) = 0 [pid 5172] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5171] <... futex resumed>) = 0 [pid 5171] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5171] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5172] umount2("./file0", MNT_DETACH [pid 5171] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5171] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5173], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5173 [pid 5171] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] <... umount2 resumed>) = 0 [pid 5171] <... futex resumed>) = 0 [pid 5171] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5173 attached [pid 5173] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5173] umount2("./file0", MNT_DETACH [pid 5172] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5173] <... umount2 resumed>) = 0 [pid 5172] <... futex resumed>) = 0 [pid 5173] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5172] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5171] <... futex resumed>) = 0 [pid 5171] exit_group(0) = ? [pid 5172] <... futex resumed>) = ? [pid 5173] <... futex resumed>) = ? [pid 5172] +++ exited with 0 +++ [pid 5173] +++ exited with 0 +++ [pid 5171] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5174 ./strace-static-x86_64: Process 5174 attached [pid 5174] set_robust_list(0x5555564465e0, 24) = 0 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3) = 0 [pid 5174] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5174] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5174] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5175 attached , parent_tid=[5175], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5175 [pid 5175] set_robust_list(0x7fc84e09f9e0, 24 [pid 5174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5175] <... set_robust_list resumed>) = 0 [pid 5175] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5174] <... futex resumed>) = 0 [pid 5175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5174] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] <... futex resumed>) = 0 [pid 5175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5175] <... futex resumed>) = 0 [pid 5175] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5174] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] <... mount resumed>) = 0 [pid 5175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5174] <... futex resumed>) = 0 [pid 5175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5175] <... futex resumed>) = 0 [pid 5175] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5174] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5175] <... mount resumed>) = 0 [pid 5175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5174] <... futex resumed>) = 0 [pid 5174] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5175] umount2("./file0", MNT_DETACH [pid 5174] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5174] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5174] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5175] <... umount2 resumed>) = 0 [pid 5174] <... clone resumed>, parent_tid=[5176], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5176 [pid 5174] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5174] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5176 attached [pid 5176] set_robust_list(0x7fc84e07e9e0, 24 [pid 5175] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5176] <... set_robust_list resumed>) = 0 [pid 5175] <... futex resumed>) = 0 [pid 5176] umount2("./file0", MNT_DETACH [pid 5175] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5176] <... umount2 resumed>) = 0 [pid 5176] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5174] <... futex resumed>) = 0 [pid 5174] exit_group(0) = ? [pid 5175] <... futex resumed>) = ? [pid 5176] +++ exited with 0 +++ [pid 5175] +++ exited with 0 +++ [pid 5174] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5177 ./strace-static-x86_64: Process 5177 attached [pid 5177] set_robust_list(0x5555564465e0, 24) = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3) = 0 [pid 5177] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5177] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5177] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5178 attached [pid 5178] set_robust_list(0x7fc84e09f9e0, 24 [pid 5177] <... clone resumed>, parent_tid=[5178], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5178 [pid 5178] <... set_robust_list resumed>) = 0 [pid 5177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5177] <... futex resumed>) = 0 [pid 5178] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] <... mount resumed>) = 0 [pid 5178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5177] <... futex resumed>) = 0 [pid 5178] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5178] <... mount resumed>) = 0 [pid 5178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5177] <... futex resumed>) = 0 [pid 5178] umount2("./file0", MNT_DETACH [pid 5177] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5177] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5177] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5178] <... umount2 resumed>) = 0 [pid 5177] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5178] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5179 attached [pid 5178] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5177] <... clone resumed>, parent_tid=[5179], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5179 [pid 5179] set_robust_list(0x7fc84e07e9e0, 24 [pid 5177] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5179] <... set_robust_list resumed>) = 0 [pid 5177] <... futex resumed>) = 0 [pid 5179] umount2("./file0", MNT_DETACH [pid 5177] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5179] <... umount2 resumed>) = 0 [pid 5179] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5177] <... futex resumed>) = 0 [pid 5179] <... futex resumed>) = 1 [pid 5177] exit_group(0) = ? [pid 5178] <... futex resumed>) = ? [pid 5178] +++ exited with 0 +++ [pid 5179] +++ exited with 0 +++ [pid 5177] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5180 ./strace-static-x86_64: Process 5180 attached [pid 5180] set_robust_list(0x5555564465e0, 24) = 0 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5180] setpgid(0, 0) = 0 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5180] write(3, "1000", 4) = 4 [pid 5180] close(3) = 0 [pid 5180] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5180] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5180] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5181], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5181 [pid 5180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5181 attached [pid 5181] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5181] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... futex resumed>) = 1 [pid 5181] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] <... futex resumed>) = 1 [pid 5181] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5180] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5180] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5182 attached [pid 5182] set_robust_list(0x7fc84e07e9e0, 24 [pid 5180] <... clone resumed>, parent_tid=[5182], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5182 [pid 5182] <... set_robust_list resumed>) = 0 [pid 5180] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5182] umount2("./file0", MNT_DETACH [pid 5180] <... futex resumed>) = 0 [pid 5180] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5181] umount2("./file0", MNT_DETACH [pid 5182] <... umount2 resumed>) = 0 [pid 5182] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5180] <... futex resumed>) = 0 [pid 5182] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5181] <... umount2 resumed>) = 0 [pid 5181] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5181] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5180] exit_group(0) = ? [pid 5181] <... futex resumed>) = ? [pid 5182] <... futex resumed>) = ? [pid 5181] +++ exited with 0 +++ [pid 5182] +++ exited with 0 +++ [pid 5180] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5183 ./strace-static-x86_64: Process 5183 attached [pid 5183] set_robust_list(0x5555564465e0, 24) = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5183] setpgid(0, 0) = 0 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5183] write(3, "1000", 4) = 4 [pid 5183] close(3) = 0 [pid 5183] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5183] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5183] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5184], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5184 [pid 5183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5183] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5184 attached [pid 5184] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5184] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5183] <... futex resumed>) = 0 [pid 5184] <... futex resumed>) = 1 [pid 5183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5183] <... futex resumed>) = 0 [pid 5183] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5184] <... mount resumed>) = 0 [pid 5184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5183] <... futex resumed>) = 0 [pid 5183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5184] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5183] <... futex resumed>) = 0 [pid 5183] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5184] <... mount resumed>) = 0 [pid 5184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5183] <... futex resumed>) = 0 [pid 5183] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5183] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5184] umount2("./file0", MNT_DETACH [pid 5183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5183] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5184] <... umount2 resumed>) = 0 [pid 5183] <... mprotect resumed>) = 0 [pid 5183] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5185], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5185 [pid 5184] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5183] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5183] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5185 attached [pid 5185] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5185] umount2("./file0", MNT_DETACH [pid 5184] <... futex resumed>) = 0 [pid 5184] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5185] <... umount2 resumed>) = 0 [pid 5185] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5183] <... futex resumed>) = 0 [pid 5183] exit_group(0) = ? [pid 5185] <... futex resumed>) = ? [pid 5184] <... futex resumed>) = 231 [pid 5185] +++ exited with 0 +++ [pid 5184] +++ exited with 0 +++ [pid 5183] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5186 ./strace-static-x86_64: Process 5186 attached [pid 5186] set_robust_list(0x5555564465e0, 24) = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5186] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5186] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5186] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5187 attached [pid 5187] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... clone resumed>, parent_tid=[5187], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5187 [pid 5186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5187] <... futex resumed>) = 0 [pid 5187] mkdir("./file0", 000 [pid 5186] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5187] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5187] <... futex resumed>) = 0 [pid 5186] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5187] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... futex resumed>) = 0 [pid 5186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5187] <... futex resumed>) = 0 [pid 5186] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5187] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5186] <... futex resumed>) = 0 [pid 5187] <... futex resumed>) = 1 [pid 5186] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5187] umount2("./file0", MNT_DETACH [pid 5186] <... futex resumed>) = 0 [pid 5186] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5186] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5187] <... umount2 resumed>) = 0 [pid 5186] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5187] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5188 attached [pid 5187] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... clone resumed>, parent_tid=[5188], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5188 [pid 5188] set_robust_list(0x7fc84e07e9e0, 24 [pid 5186] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5188] <... set_robust_list resumed>) = 0 [pid 5186] <... futex resumed>) = 0 [pid 5188] umount2("./file0", MNT_DETACH [pid 5186] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5188] <... umount2 resumed>) = 0 [pid 5188] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5186] <... futex resumed>) = 0 [pid 5188] <... futex resumed>) = 1 [pid 5186] exit_group(0 [pid 5188] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5186] <... exit_group resumed>) = ? [pid 5187] <... futex resumed>) = -1 (errno 18446744073709551414) [pid 5188] <... futex resumed>) = ? [pid 5187] +++ exited with 0 +++ [pid 5188] +++ exited with 0 +++ [pid 5186] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5189 attached , child_tidptr=0x5555564465d0) = 5189 [pid 5189] set_robust_list(0x5555564465e0, 24) = 0 [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5189] setpgid(0, 0) = 0 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5189] write(3, "1000", 4) = 4 [pid 5189] close(3) = 0 [pid 5189] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5189] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5189] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5190], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5190 ./strace-static-x86_64: Process 5190 attached [pid 5190] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5190] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5190] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5189] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5190] <... mount resumed>) = 0 [pid 5190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] <... futex resumed>) = 0 [pid 5190] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5189] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5190] <... mount resumed>) = 0 [pid 5190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] <... futex resumed>) = 0 [pid 5189] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5189] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5189] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5191], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5191 [pid 5190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5189] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5189] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5191 attached [pid 5191] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5191] umount2("./file0", MNT_DETACH) = 0 [pid 5190] umount2("./file0", MNT_DETACH [pid 5191] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5189] <... futex resumed>) = 0 [pid 5191] <... futex resumed>) = 1 [pid 5191] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5190] <... umount2 resumed>) = 0 [pid 5190] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5190] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5189] exit_group(0) = ? [pid 5191] <... futex resumed>) = ? [pid 5191] +++ exited with 0 +++ [pid 5190] <... futex resumed>) = ? [pid 5190] +++ exited with 0 +++ [pid 5189] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5192 ./strace-static-x86_64: Process 5192 attached [pid 5192] set_robust_list(0x5555564465e0, 24) = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5192] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5192] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5193 attached , parent_tid=[5193], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5193 [pid 5193] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5193] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5192] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5193] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5193] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5192] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5193] <... mount resumed>) = 0 [pid 5193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5193] <... futex resumed>) = 0 [pid 5193] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5192] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5193] <... mount resumed>) = 0 [pid 5193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5192] <... futex resumed>) = 0 [pid 5192] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5192] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5192] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5193] umount2("./file0", MNT_DETACH [pid 5192] <... clone resumed>, parent_tid=[5194], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5194 [pid 5192] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5192] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5194 attached [pid 5194] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5194] umount2("./file0", MNT_DETACH [pid 5193] <... umount2 resumed>) = 0 [pid 5193] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5194] <... umount2 resumed>) = 0 [pid 5194] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5193] <... futex resumed>) = 0 [pid 5193] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5192] <... futex resumed>) = 0 [pid 5192] exit_group(0) = ? [pid 5193] <... futex resumed>) = 231 [pid 5194] <... futex resumed>) = ? [pid 5194] +++ exited with 0 +++ [pid 5193] +++ exited with 0 +++ [pid 5192] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5195 ./strace-static-x86_64: Process 5195 attached [pid 5195] set_robust_list(0x5555564465e0, 24) = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5195] setpgid(0, 0) = 0 [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5195] write(3, "1000", 4) = 4 [pid 5195] close(3) = 0 [pid 5195] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5195] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5195] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5196 attached , parent_tid=[5196], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5196 [pid 5196] set_robust_list(0x7fc84e09f9e0, 24 [pid 5195] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] <... set_robust_list resumed>) = 0 [pid 5195] <... futex resumed>) = 0 [pid 5195] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5196] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5195] <... futex resumed>) = 0 [pid 5196] <... futex resumed>) = 1 [pid 5195] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5195] <... futex resumed>) = 0 [pid 5195] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5196] <... mount resumed>) = 0 [pid 5196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5195] <... futex resumed>) = 0 [pid 5195] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5196] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5195] <... futex resumed>) = 0 [pid 5195] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5196] <... mount resumed>) = 0 [pid 5196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5195] <... futex resumed>) = 0 [pid 5196] umount2("./file0", MNT_DETACH [pid 5195] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5195] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5196] <... umount2 resumed>) = 0 [pid 5195] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5196] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5195] <... clone resumed>, parent_tid=[5197], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5197 [pid 5195] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5195] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5196] <... futex resumed>) = 0 [pid 5196] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5197 attached [pid 5197] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5197] umount2("./file0", MNT_DETACH) = 0 [pid 5197] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5195] <... futex resumed>) = 0 [pid 5195] exit_group(0) = ? [pid 5196] <... futex resumed>) = ? [pid 5196] +++ exited with 0 +++ [pid 5197] +++ exited with 0 +++ [pid 5195] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5198 ./strace-static-x86_64: Process 5198 attached [pid 5198] set_robust_list(0x5555564465e0, 24) = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5198] setpgid(0, 0) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5198] write(3, "1000", 4) = 4 [pid 5198] close(3) = 0 [pid 5198] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5198] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5198] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5199], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5199 [pid 5198] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5199 attached [pid 5199] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5199] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] <... futex resumed>) = 1 [pid 5199] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... futex resumed>) = 0 [pid 5199] <... futex resumed>) = 1 [pid 5198] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5199] <... mount resumed>) = 0 [pid 5199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5198] <... futex resumed>) = 0 [pid 5199] <... futex resumed>) = 1 [pid 5198] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5199] umount2("./file0", MNT_DETACH [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5199] <... umount2 resumed>) = 0 [pid 5198] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5199] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5198] <... mprotect resumed>) = 0 [pid 5199] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5198] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5200 attached [pid 5200] set_robust_list(0x7fc84e07e9e0, 24 [pid 5198] <... clone resumed>, parent_tid=[5200], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5200 [pid 5200] <... set_robust_list resumed>) = 0 [pid 5198] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5200] umount2("./file0", MNT_DETACH [pid 5198] <... futex resumed>) = 0 [pid 5198] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5200] <... umount2 resumed>) = 0 [pid 5200] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5198] <... futex resumed>) = 0 [pid 5198] exit_group(0 [pid 5199] <... futex resumed>) = 231 [pid 5198] <... exit_group resumed>) = ? [pid 5200] +++ exited with 0 +++ [pid 5199] +++ exited with 0 +++ [pid 5198] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5201 ./strace-static-x86_64: Process 5201 attached [pid 5201] set_robust_list(0x5555564465e0, 24) = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5201] write(3, "1000", 4) = 4 [pid 5201] close(3) = 0 [pid 5201] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5201] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5201] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5202 attached , parent_tid=[5202], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5202 [pid 5202] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5201] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5202] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5202] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5201] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] <... futex resumed>) = 0 [pid 5202] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5201] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5202] <... mount resumed>) = 0 [pid 5202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5201] <... futex resumed>) = 0 [pid 5202] <... futex resumed>) = 1 [pid 5202] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5201] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5202] <... futex resumed>) = 0 [pid 5202] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5201] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5202] <... mount resumed>) = 0 [pid 5202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5201] <... futex resumed>) = 0 [pid 5201] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5202] umount2("./file0", MNT_DETACH [pid 5201] <... futex resumed>) = 0 [pid 5201] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5201] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5201] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5203 attached [pid 5202] <... umount2 resumed>) = 0 [pid 5201] <... clone resumed>, parent_tid=[5203], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5203 [pid 5201] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5201] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5203] set_robust_list(0x7fc84e07e9e0, 24 [pid 5202] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5203] <... set_robust_list resumed>) = 0 [pid 5202] <... futex resumed>) = 0 [pid 5203] umount2("./file0", MNT_DETACH [pid 5202] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5203] <... umount2 resumed>) = 0 [pid 5203] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5201] <... futex resumed>) = 0 [pid 5201] exit_group(0 [pid 5202] <... futex resumed>) = ? [pid 5202] +++ exited with 0 +++ [pid 5201] <... exit_group resumed>) = ? [pid 5203] +++ exited with 0 +++ [pid 5201] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5204 ./strace-static-x86_64: Process 5204 attached [pid 5204] set_robust_list(0x5555564465e0, 24) = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5204] setpgid(0, 0) = 0 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5204] write(3, "1000", 4) = 4 [pid 5204] close(3) = 0 [pid 5204] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5204] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5204] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5205 attached , parent_tid=[5205], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5205 [pid 5204] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5205] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5205] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5204] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5205] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5204] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5205] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5204] <... futex resumed>) = 0 [pid 5204] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5204] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5204] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5205] umount2("./file0", MNT_DETACH [pid 5204] <... clone resumed>, parent_tid=[5206], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5206 [pid 5204] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5204] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5206 attached [pid 5206] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5206] umount2("./file0", MNT_DETACH) = 0 [pid 5206] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5204] <... futex resumed>) = 0 [pid 5205] <... umount2 resumed>) = 0 [pid 5206] <... futex resumed>) = 1 [pid 5206] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5205] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5205] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5204] exit_group(0 [pid 5205] <... futex resumed>) = ? [pid 5204] <... exit_group resumed>) = ? [pid 5206] <... futex resumed>) = ? [pid 5205] +++ exited with 0 +++ [pid 5206] +++ exited with 0 +++ [pid 5204] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5207 ./strace-static-x86_64: Process 5207 attached [pid 5207] set_robust_list(0x5555564465e0, 24) = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5207] write(3, "1000", 4) = 4 [pid 5207] close(3) = 0 [pid 5207] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5207] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5207] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5207] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5208 attached , parent_tid=[5208], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5208 [pid 5208] set_robust_list(0x7fc84e09f9e0, 24 [pid 5207] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... set_robust_list resumed>) = 0 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] <... mount resumed>) = 0 [pid 5208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5207] <... futex resumed>) = 0 [pid 5208] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5207] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5207] <... futex resumed>) = 0 [pid 5208] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5207] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5208] <... mount resumed>) = 0 [pid 5208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5207] <... futex resumed>) = 0 [pid 5208] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5207] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5207] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5207] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5208] umount2("./file0", MNT_DETACH [pid 5207] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5209], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5209 [pid 5207] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5208] <... umount2 resumed>) = 0 [pid 5207] <... futex resumed>) = 0 [pid 5207] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5209 attached [pid 5209] set_robust_list(0x7fc84e07e9e0, 24 [pid 5208] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5209] <... set_robust_list resumed>) = 0 [pid 5208] <... futex resumed>) = 0 [pid 5209] umount2("./file0", MNT_DETACH [pid 5208] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5209] <... umount2 resumed>) = 0 [pid 5209] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5207] <... futex resumed>) = 0 [pid 5207] exit_group(0) = ? [pid 5209] <... futex resumed>) = ? [pid 5208] <... futex resumed>) = ? [pid 5209] +++ exited with 0 +++ [pid 5208] +++ exited with 0 +++ [pid 5207] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5210 ./strace-static-x86_64: Process 5210 attached [pid 5210] set_robust_list(0x5555564465e0, 24) = 0 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5210] write(3, "1000", 4) = 4 [pid 5210] close(3) = 0 [pid 5210] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5210] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5210] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5211], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5211 ./strace-static-x86_64: Process 5211 attached [pid 5211] set_robust_list(0x7fc84e09f9e0, 24 [pid 5210] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... set_robust_list resumed>) = 0 [pid 5210] <... futex resumed>) = 0 [pid 5211] mkdir("./file0", 000 [pid 5210] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5210] <... futex resumed>) = 0 [pid 5211] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5210] <... futex resumed>) = 0 [pid 5211] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5210] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... mount resumed>) = 0 [pid 5211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5210] <... futex resumed>) = 0 [pid 5211] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5211] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5210] <... futex resumed>) = 0 [pid 5211] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5210] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5211] <... mount resumed>) = 0 [pid 5211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5210] <... futex resumed>) = 0 [pid 5210] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5210] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5210] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5212], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5212 [pid 5211] umount2("./file0", MNT_DETACH [pid 5210] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5210] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5212 attached [pid 5212] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5212] umount2("./file0", MNT_DETACH [pid 5211] <... umount2 resumed>) = 0 [pid 5212] <... umount2 resumed>) = 0 [pid 5212] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5210] <... futex resumed>) = 0 [pid 5212] <... futex resumed>) = 1 [pid 5212] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5211] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5211] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5210] exit_group(0) = ? [pid 5212] <... futex resumed>) = ? [pid 5211] <... futex resumed>) = ? [pid 5211] +++ exited with 0 +++ [pid 5212] +++ exited with 0 +++ [pid 5210] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5213 ./strace-static-x86_64: Process 5213 attached [pid 5213] set_robust_list(0x5555564465e0, 24) = 0 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5213] setpgid(0, 0) = 0 [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5213] write(3, "1000", 4) = 4 [pid 5213] close(3) = 0 [pid 5213] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5213] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5213] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5214 attached , parent_tid=[5214], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5214 [pid 5214] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5214] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5213] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5214] <... futex resumed>) = 0 [pid 5214] mkdir("./file0", 000 [pid 5213] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5213] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5213] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5213] <... futex resumed>) = 0 [pid 5213] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5213] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5213] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5215], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5215 [pid 5213] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5213] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5214] umount2("./file0", MNT_DETACH) = 0 [pid 5214] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5214] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5215 attached [pid 5215] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5215] umount2("./file0", MNT_DETACH) = 0 [pid 5215] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5213] <... futex resumed>) = 0 [pid 5215] <... futex resumed>) = 1 [pid 5213] exit_group(0) = ? [pid 5214] <... futex resumed>) = ? [pid 5214] +++ exited with 0 +++ [pid 5215] +++ exited with 0 +++ [pid 5213] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5216 ./strace-static-x86_64: Process 5216 attached [pid 5216] set_robust_list(0x5555564465e0, 24) = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] setpgid(0, 0) = 0 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5216] write(3, "1000", 4) = 4 [pid 5216] close(3) = 0 [pid 5216] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5216] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5216] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5217], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5217 [pid 5216] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5217 attached [pid 5217] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5217] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5216] <... futex resumed>) = 0 [pid 5216] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5217] <... futex resumed>) = 1 [pid 5217] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5216] <... futex resumed>) = 0 [pid 5216] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5217] <... futex resumed>) = 1 [pid 5217] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5216] <... futex resumed>) = 0 [pid 5217] <... futex resumed>) = 1 [pid 5216] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5217] umount2("./file0", MNT_DETACH [pid 5216] <... futex resumed>) = 0 [pid 5216] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5216] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5216] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5218 attached [pid 5217] <... umount2 resumed>) = 0 [pid 5216] <... clone resumed>, parent_tid=[5218], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5218 [pid 5218] set_robust_list(0x7fc84e07e9e0, 24 [pid 5217] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5218] <... set_robust_list resumed>) = 0 [pid 5216] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5218] umount2("./file0", MNT_DETACH [pid 5217] <... futex resumed>) = 0 [pid 5216] <... futex resumed>) = 0 [pid 5217] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5216] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5218] <... umount2 resumed>) = 0 [pid 5218] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5216] <... futex resumed>) = 0 [pid 5218] <... futex resumed>) = 1 [pid 5216] exit_group(0 [pid 5218] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5216] <... exit_group resumed>) = ? [pid 5217] <... futex resumed>) = ? [pid 5217] +++ exited with 0 +++ [pid 5218] <... futex resumed>) = ? [pid 5218] +++ exited with 0 +++ [pid 5216] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5219 ./strace-static-x86_64: Process 5219 attached [pid 5219] set_robust_list(0x5555564465e0, 24) = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5219] close(3) = 0 [pid 5219] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5219] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5219] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5219] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5220 attached , parent_tid=[5220], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5220 [pid 5220] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5220] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5219] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] <... futex resumed>) = 0 [pid 5219] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5220] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5219] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] <... futex resumed>) = 0 [pid 5220] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5219] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5220] <... mount resumed>) = 0 [pid 5220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5219] <... futex resumed>) = 0 [pid 5219] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] <... futex resumed>) = 0 [pid 5220] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5219] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5220] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5219] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5220] <... futex resumed>) = 0 [pid 5220] umount2("./file0", MNT_DETACH [pid 5219] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5220] <... umount2 resumed>) = 0 [pid 5219] <... futex resumed>) = 0 [pid 5220] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5219] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5220] <... futex resumed>) = 0 [pid 5219] <... mmap resumed>) = 0x7fc84e05e000 [pid 5220] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5219] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5219] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5221 attached , parent_tid=[5221], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5221 [pid 5221] set_robust_list(0x7fc84e07e9e0, 24 [pid 5219] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5221] <... set_robust_list resumed>) = 0 [pid 5219] <... futex resumed>) = 0 [pid 5221] umount2("./file0", MNT_DETACH [pid 5219] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5221] <... umount2 resumed>) = 0 [pid 5221] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5219] <... futex resumed>) = 0 [pid 5221] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5219] exit_group(0) = ? [pid 5220] <... futex resumed>) = ? [pid 5220] +++ exited with 0 +++ [pid 5221] <... futex resumed>) = ? [pid 5221] +++ exited with 0 +++ [pid 5219] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5222 ./strace-static-x86_64: Process 5222 attached [pid 5222] set_robust_list(0x5555564465e0, 24) = 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5222] setpgid(0, 0) = 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5222] write(3, "1000", 4) = 4 [pid 5222] close(3) = 0 [pid 5222] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5222] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5222] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5223 attached [pid 5223] set_robust_list(0x7fc84e09f9e0, 24 [pid 5222] <... clone resumed>, parent_tid=[5223], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5223 [pid 5223] <... set_robust_list resumed>) = 0 [pid 5222] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5222] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5223] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5222] <... futex resumed>) = 0 [pid 5223] <... futex resumed>) = 1 [pid 5222] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5222] <... futex resumed>) = 0 [pid 5222] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5223] <... mount resumed>) = 0 [pid 5223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5222] <... futex resumed>) = 0 [pid 5223] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5222] <... futex resumed>) = 0 [pid 5223] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5222] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5223] <... mount resumed>) = 0 [pid 5223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5222] <... futex resumed>) = 0 [pid 5223] <... futex resumed>) = 1 [pid 5222] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5223] umount2("./file0", MNT_DETACH [pid 5222] <... futex resumed>) = 0 [pid 5222] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5222] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5222] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5223] <... umount2 resumed>) = 0 [pid 5223] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5224 attached ) = 0 [pid 5222] <... clone resumed>, parent_tid=[5224], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5224 [pid 5224] set_robust_list(0x7fc84e07e9e0, 24 [pid 5223] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5224] <... set_robust_list resumed>) = 0 [pid 5222] <... futex resumed>) = 0 [pid 5224] umount2("./file0", MNT_DETACH [pid 5222] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5224] <... umount2 resumed>) = 0 [pid 5224] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5222] <... futex resumed>) = 0 [pid 5224] <... futex resumed>) = 1 [pid 5224] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5222] exit_group(0) = ? [pid 5223] <... futex resumed>) = 231 [pid 5224] <... futex resumed>) = ? [pid 5223] +++ exited with 0 +++ [pid 5224] +++ exited with 0 +++ [pid 5222] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5225 ./strace-static-x86_64: Process 5225 attached [pid 5225] set_robust_list(0x5555564465e0, 24) = 0 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5225] setpgid(0, 0) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 [pid 5225] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5225] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5225] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5226 attached [pid 5226] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5226] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5225] <... clone resumed>, parent_tid=[5226], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5226 [pid 5225] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] <... futex resumed>) = 0 [pid 5226] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5225] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5225] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] <... futex resumed>) = 0 [pid 5226] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5225] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5225] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5226] <... futex resumed>) = 0 [pid 5226] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5225] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5226] <... mount resumed>) = 0 [pid 5226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5225] <... futex resumed>) = 0 [pid 5225] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5225] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5225] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5226] umount2("./file0", MNT_DETACH [pid 5225] <... mprotect resumed>) = 0 [pid 5225] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5227], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5227 [pid 5225] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5225] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5227 attached [pid 5227] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5227] umount2("./file0", MNT_DETACH) = 0 [pid 5226] <... umount2 resumed>) = 0 [pid 5227] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5225] <... futex resumed>) = 0 [pid 5227] <... futex resumed>) = 1 [pid 5227] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5226] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5226] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5225] exit_group(0) = ? [pid 5227] <... futex resumed>) = ? [pid 5227] +++ exited with 0 +++ [pid 5226] <... futex resumed>) = ? [pid 5226] +++ exited with 0 +++ [pid 5225] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5228 ./strace-static-x86_64: Process 5228 attached [pid 5228] set_robust_list(0x5555564465e0, 24) = 0 [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5228] setpgid(0, 0) = 0 [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5228] write(3, "1000", 4) = 4 [pid 5228] close(3) = 0 [pid 5228] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5228] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5228] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5229], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5229 [pid 5228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5229 attached [pid 5229] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5229] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5229] <... futex resumed>) = 1 [pid 5229] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5229] <... futex resumed>) = 1 [pid 5229] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5228] <... futex resumed>) = 0 [pid 5229] <... futex resumed>) = 1 [pid 5228] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5229] umount2("./file0", MNT_DETACH [pid 5228] <... futex resumed>) = 0 [pid 5228] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5228] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5228] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5229] <... umount2 resumed>) = 0 [pid 5229] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5230 attached [pid 5228] <... clone resumed>, parent_tid=[5230], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5230 [pid 5230] set_robust_list(0x7fc84e07e9e0, 24 [pid 5229] <... futex resumed>) = 0 [pid 5228] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5230] <... set_robust_list resumed>) = 0 [pid 5229] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5228] <... futex resumed>) = 0 [pid 5230] umount2("./file0", MNT_DETACH [pid 5228] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5230] <... umount2 resumed>) = 0 [pid 5230] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5228] <... futex resumed>) = 0 [pid 5230] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5228] exit_group(0) = ? [pid 5229] <... futex resumed>) = 231 [pid 5230] <... futex resumed>) = ? [pid 5229] +++ exited with 0 +++ [pid 5230] +++ exited with 0 +++ [pid 5228] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5228, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5231 ./strace-static-x86_64: Process 5231 attached [pid 5231] set_robust_list(0x5555564465e0, 24) = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] setpgid(0, 0) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5231] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5231] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5232], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5232 [pid 5231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5232 attached [pid 5232] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5232] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5232] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5232] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5231] <... futex resumed>) = 0 [pid 5231] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5232] <... mount resumed>) = 0 [pid 5232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5232] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5232] <... mount resumed>) = 0 [pid 5232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5232] umount2("./file0", MNT_DETACH [pid 5231] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5231] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5231] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5232] <... umount2 resumed>) = 0 [pid 5231] <... clone resumed>, parent_tid=[5233], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5233 [pid 5231] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5232] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5231] <... futex resumed>) = 0 [pid 5231] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5232] <... futex resumed>) = 0 [pid 5232] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5233 attached [pid 5233] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5233] umount2("./file0", MNT_DETACH) = 0 [pid 5233] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5231] <... futex resumed>) = 0 [pid 5233] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5231] exit_group(0) = ? [pid 5232] <... futex resumed>) = ? [pid 5232] +++ exited with 0 +++ [pid 5233] <... futex resumed>) = ? [pid 5233] +++ exited with 0 +++ [pid 5231] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5234 attached , child_tidptr=0x5555564465d0) = 5234 [pid 5234] set_robust_list(0x5555564465e0, 24) = 0 [pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5234] setpgid(0, 0) = 0 [pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5234] write(3, "1000", 4) = 4 [pid 5234] close(3) = 0 [pid 5234] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5234] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5234] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5235 attached [pid 5235] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] <... clone resumed>, parent_tid=[5235], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5235 [pid 5234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5235] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5234] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5235] <... futex resumed>) = 0 [pid 5234] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5235] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5234] <... futex resumed>) = 0 [pid 5235] <... mount resumed>) = 0 [pid 5235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5235] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5234] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5234] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5235] <... futex resumed>) = 0 [pid 5234] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5235] umount2("./file0", MNT_DETACH [pid 5234] <... futex resumed>) = 0 [pid 5234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5234] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5234] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5235] <... umount2 resumed>) = 0 [pid 5235] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5234] <... clone resumed>, parent_tid=[5236], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5236 [pid 5235] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5234] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5234] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5236 attached [pid 5236] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5236] umount2("./file0", MNT_DETACH) = 0 [pid 5236] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5234] <... futex resumed>) = 0 [pid 5234] exit_group(0) = ? [pid 5235] <... futex resumed>) = ? [pid 5235] +++ exited with 0 +++ [pid 5236] +++ exited with 0 +++ [pid 5234] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5234, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5237 ./strace-static-x86_64: Process 5237 attached [pid 5237] set_robust_list(0x5555564465e0, 24) = 0 [pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5237] setpgid(0, 0) = 0 [pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5237] write(3, "1000", 4) = 4 [pid 5237] close(3) = 0 [pid 5237] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5237] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5237] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5238 attached , parent_tid=[5238], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5238 [pid 5238] set_robust_list(0x7fc84e09f9e0, 24 [pid 5237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5238] <... set_robust_list resumed>) = 0 [pid 5237] <... futex resumed>) = 0 [pid 5238] mkdir("./file0", 000 [pid 5237] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5237] <... futex resumed>) = 0 [pid 5238] <... futex resumed>) = 1 [pid 5237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5237] <... futex resumed>) = 0 [pid 5237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... futex resumed>) = 1 [pid 5238] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5237] <... futex resumed>) = 0 [pid 5237] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5237] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5237] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5239 attached , parent_tid=[5239], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5239 [pid 5239] set_robust_list(0x7fc84e07e9e0, 24 [pid 5237] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5239] <... set_robust_list resumed>) = 0 [pid 5237] <... futex resumed>) = 0 [pid 5237] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5238] <... futex resumed>) = 1 [pid 5238] umount2("./file0", MNT_DETACH [pid 5239] umount2("./file0", MNT_DETACH [pid 5238] <... umount2 resumed>) = 0 [pid 5238] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5239] <... umount2 resumed>) = 0 [pid 5239] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5239] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5238] <... futex resumed>) = 0 [pid 5237] <... futex resumed>) = 0 [pid 5237] exit_group(0 [pid 5238] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = ? [pid 5237] <... exit_group resumed>) = ? [pid 5239] <... futex resumed>) = ? [pid 5239] +++ exited with 0 +++ [pid 5238] +++ exited with 0 +++ [pid 5237] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5240 attached , child_tidptr=0x5555564465d0) = 5240 [pid 5240] set_robust_list(0x5555564465e0, 24) = 0 [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5240] setpgid(0, 0) = 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5240] write(3, "1000", 4) = 4 [pid 5240] close(3) = 0 [pid 5240] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5240] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5240] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5241 attached , parent_tid=[5241], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5241 [pid 5241] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5241] <... futex resumed>) = 0 [pid 5241] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5241] <... futex resumed>) = 0 [pid 5241] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5240] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5241] <... futex resumed>) = 0 [pid 5241] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5240] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5241] <... mount resumed>) = 0 [pid 5241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5240] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5241] <... futex resumed>) = 0 [pid 5240] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5241] umount2("./file0", MNT_DETACH [pid 5240] <... futex resumed>) = 0 [pid 5240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5241] <... umount2 resumed>) = 0 [pid 5241] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5241] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] <... mmap resumed>) = 0x7fc84e05e000 [pid 5240] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5240] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5242 attached [pid 5242] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5242] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] <... clone resumed>, parent_tid=[5242], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5242 [pid 5240] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5242] <... futex resumed>) = 0 [pid 5242] umount2("./file0", MNT_DETACH [pid 5240] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5242] <... umount2 resumed>) = 0 [pid 5242] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5242] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5240] exit_group(0) = ? [pid 5241] <... futex resumed>) = ? [pid 5241] +++ exited with 0 +++ [pid 5242] <... futex resumed>) = ? [pid 5242] +++ exited with 0 +++ [pid 5240] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5243 ./strace-static-x86_64: Process 5243 attached [pid 5243] set_robust_list(0x5555564465e0, 24) = 0 [pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5243] setpgid(0, 0) = 0 [pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5243] write(3, "1000", 4) = 4 [pid 5243] close(3) = 0 [pid 5243] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5243] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5243] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5244 attached [pid 5244] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... clone resumed>, parent_tid=[5244], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5244 [pid 5243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5243] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5244] <... futex resumed>) = 0 [pid 5244] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... futex resumed>) = 0 [pid 5243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] <... futex resumed>) = 0 [pid 5244] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5243] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5244] <... mount resumed>) = 0 [pid 5244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] <... futex resumed>) = 0 [pid 5243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5244] <... futex resumed>) = 0 [pid 5243] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5244] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5243] <... futex resumed>) = 0 [pid 5243] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5243] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5243] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5243] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5243] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5245], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5245 [pid 5243] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5244] umount2("./file0", MNT_DETACH [pid 5243] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5245 attached [pid 5245] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5245] umount2("./file0", MNT_DETACH) = 0 [pid 5245] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5243] <... futex resumed>) = 0 [pid 5245] <... futex resumed>) = 1 [pid 5245] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5244] <... umount2 resumed>) = 0 [pid 5244] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5244] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5243] exit_group(0) = ? [pid 5244] <... futex resumed>) = ? [pid 5244] +++ exited with 0 +++ [pid 5245] <... futex resumed>) = 231 [pid 5245] +++ exited with 0 +++ [pid 5243] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5246 attached [pid 5246] set_robust_list(0x5555564465e0, 24) = 0 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 5246 [pid 5246] setpgid(0, 0) = 0 [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5246] write(3, "1000", 4) = 4 [pid 5246] close(3) = 0 [pid 5246] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5246] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5246] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5247 attached , parent_tid=[5247], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5247 [pid 5247] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5246] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5247] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] <... mount resumed>) = 0 [pid 5247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5246] <... futex resumed>) = 0 [pid 5246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5247] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5246] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5247] <... mount resumed>) = 0 [pid 5247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5246] <... futex resumed>) = 0 [pid 5247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5246] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5247] <... futex resumed>) = 0 [pid 5246] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5247] umount2("./file0", MNT_DETACH [pid 5246] <... futex resumed>) = 0 [pid 5246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5246] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5247] <... umount2 resumed>) = 0 [pid 5246] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5247] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5247] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5248 attached [pid 5248] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5248] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5246] <... clone resumed>, parent_tid=[5248], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5248 [pid 5246] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5248] <... futex resumed>) = 0 [pid 5246] <... futex resumed>) = 1 [pid 5248] umount2("./file0", MNT_DETACH [pid 5246] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5248] <... umount2 resumed>) = 0 [pid 5248] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5246] <... futex resumed>) = 0 [pid 5246] exit_group(0) = ? [pid 5247] <... futex resumed>) = ? [pid 5247] +++ exited with 0 +++ [pid 5248] +++ exited with 0 +++ [pid 5246] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5249 ./strace-static-x86_64: Process 5249 attached [pid 5249] set_robust_list(0x5555564465e0, 24) = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5249] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5249] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5250 attached , parent_tid=[5250], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5250 [pid 5250] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5250] mkdir("./file0", 000 [pid 5249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5250] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] <... futex resumed>) = 0 [pid 5250] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5250] <... mount resumed>) = 0 [pid 5250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] <... futex resumed>) = 0 [pid 5250] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5249] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5250] <... mount resumed>) = 0 [pid 5250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... futex resumed>) = 0 [pid 5249] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5250] <... futex resumed>) = 0 [pid 5250] umount2("./file0", MNT_DETACH [pid 5249] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] <... umount2 resumed>) = 0 [pid 5249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5250] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5250] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... mmap resumed>) = 0x7fc84e05e000 [pid 5249] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5249] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5251 attached , parent_tid=[5251], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5251 [pid 5251] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5251] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5251] <... futex resumed>) = 0 [pid 5251] umount2("./file0", MNT_DETACH) = 0 [pid 5249] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5251] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5251] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5249] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5249] exit_group(0 [pid 5250] <... futex resumed>) = ? [pid 5249] <... exit_group resumed>) = ? [pid 5250] +++ exited with 0 +++ [pid 5251] <... futex resumed>) = ? [pid 5251] +++ exited with 0 +++ [pid 5249] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5252 ./strace-static-x86_64: Process 5252 attached [pid 5252] set_robust_list(0x5555564465e0, 24) = 0 [pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5252] setpgid(0, 0) = 0 [pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5252] write(3, "1000", 4) = 4 [pid 5252] close(3) = 0 [pid 5252] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5252] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5252] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5253 attached , parent_tid=[5253], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5253 [pid 5253] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5253] <... futex resumed>) = 0 [pid 5252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] <... futex resumed>) = 0 [pid 5252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5253] <... futex resumed>) = 0 [pid 5252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5252] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5252] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5253] umount2("./file0", MNT_DETACH [pid 5252] <... mprotect resumed>) = 0 [pid 5252] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5254], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5254 [pid 5252] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5252] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5253] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 5254 attached [pid 5253] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5254] set_robust_list(0x7fc84e07e9e0, 24 [pid 5253] <... futex resumed>) = 0 [pid 5254] <... set_robust_list resumed>) = 0 [pid 5253] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5254] umount2("./file0", MNT_DETACH) = 0 [pid 5254] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5252] <... futex resumed>) = 0 [pid 5254] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5252] exit_group(0 [pid 5254] <... futex resumed>) = ? [pid 5253] <... futex resumed>) = ? [pid 5252] <... exit_group resumed>) = ? [pid 5253] +++ exited with 0 +++ [pid 5254] +++ exited with 0 +++ [pid 5252] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5255 ./strace-static-x86_64: Process 5255 attached [pid 5255] set_robust_list(0x5555564465e0, 24) = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5255] write(3, "1000", 4) = 4 [pid 5255] close(3) = 0 [pid 5255] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5255] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5255] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5256 attached , parent_tid=[5256], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5256 [pid 5256] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5256] mkdir("./file0", 000 [pid 5255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5256] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5256] <... futex resumed>) = 0 [pid 5256] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5256] <... mount resumed>) = 0 [pid 5256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5255] <... futex resumed>) = 0 [pid 5255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5255] <... futex resumed>) = 0 [pid 5255] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5256] <... mount resumed>) = 0 [pid 5256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5255] <... futex resumed>) = 0 [pid 5256] umount2("./file0", MNT_DETACH [pid 5255] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5255] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5256] <... umount2 resumed>) = 0 [pid 5256] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5255] <... futex resumed>) = 0 [pid 5256] <... futex resumed>) = 0 [pid 5255] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5256] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] <... mmap resumed>) = 0x7fc84e05e000 [pid 5255] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5255] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5257 attached , parent_tid=[5257], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5257 [pid 5257] set_robust_list(0x7fc84e07e9e0, 24 [pid 5255] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5257] <... set_robust_list resumed>) = 0 [pid 5255] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5257] umount2("./file0", MNT_DETACH) = 0 [pid 5257] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5255] <... futex resumed>) = 0 [pid 5255] exit_group(0 [pid 5257] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5255] <... exit_group resumed>) = ? [pid 5257] <... futex resumed>) = ? [pid 5256] <... futex resumed>) = ? [pid 5256] +++ exited with 0 +++ [pid 5257] +++ exited with 0 +++ [pid 5255] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5255, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5258 ./strace-static-x86_64: Process 5258 attached [pid 5258] set_robust_list(0x5555564465e0, 24) = 0 [pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5258] setpgid(0, 0) = 0 [pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5258] write(3, "1000", 4) = 4 [pid 5258] close(3) = 0 [pid 5258] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5258] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5258] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5259], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5259 ./strace-static-x86_64: Process 5259 attached [pid 5258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5259] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5258] <... futex resumed>) = 0 [pid 5259] <... futex resumed>) = 0 [pid 5259] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] <... futex resumed>) = 0 [pid 5259] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5259] <... mount resumed>) = 0 [pid 5259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5258] <... futex resumed>) = 0 [pid 5258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5259] <... futex resumed>) = 0 [pid 5259] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5258] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5259] <... mount resumed>) = 0 [pid 5259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5258] <... futex resumed>) = 0 [pid 5258] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5258] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5258] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5258] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5259] umount2("./file0", MNT_DETACH [pid 5258] <... clone resumed>, parent_tid=[5260], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5260 [pid 5258] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5259] <... umount2 resumed>) = 0 [pid 5258] <... futex resumed>) = 0 [pid 5258] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5260 attached [pid 5260] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5260] umount2("./file0", MNT_DETACH [pid 5259] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5260] <... umount2 resumed>) = 0 [pid 5260] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5258] <... futex resumed>) = 0 [pid 5258] exit_group(0) = ? [pid 5260] <... futex resumed>) = ? [pid 5260] +++ exited with 0 +++ [pid 5259] <... futex resumed>) = ? [pid 5259] +++ exited with 0 +++ [pid 5258] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5261 ./strace-static-x86_64: Process 5261 attached [pid 5261] set_robust_list(0x5555564465e0, 24) = 0 [pid 5261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5261] setpgid(0, 0) = 0 [pid 5261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5261] write(3, "1000", 4) = 4 [pid 5261] close(3) = 0 [pid 5261] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5261] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5261] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5262 attached , parent_tid=[5262], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5262 [pid 5262] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] <... futex resumed>) = 0 [pid 5261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] <... futex resumed>) = 0 [pid 5262] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] <... mount resumed>) = 0 [pid 5262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5262] <... futex resumed>) = 0 [pid 5262] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5261] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5262] <... mount resumed>) = 0 [pid 5262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5261] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5262] umount2("./file0", MNT_DETACH [pid 5261] <... futex resumed>) = 0 [pid 5261] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5262] <... umount2 resumed>) = 0 [pid 5261] <... mmap resumed>) = 0x7fc84e05e000 [pid 5261] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5262] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5261] <... mprotect resumed>) = 0 [pid 5262] <... futex resumed>) = 0 [pid 5262] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5261] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5263], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5263 [pid 5261] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5261] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5263 attached [pid 5263] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5263] umount2("./file0", MNT_DETACH) = 0 [pid 5263] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5261] <... futex resumed>) = 0 [pid 5261] exit_group(0 [pid 5263] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5262] <... futex resumed>) = ? [pid 5261] <... exit_group resumed>) = ? [pid 5262] +++ exited with 0 +++ [pid 5263] <... futex resumed>) = ? [pid 5263] +++ exited with 0 +++ [pid 5261] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5261, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5264 ./strace-static-x86_64: Process 5264 attached [pid 5264] set_robust_list(0x5555564465e0, 24) = 0 [pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5264] setpgid(0, 0) = 0 [pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5264] write(3, "1000", 4) = 4 [pid 5264] close(3) = 0 [pid 5264] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5264] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5264] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5265 attached [pid 5265] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... clone resumed>, parent_tid=[5265], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5265 [pid 5264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5265] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5265] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5265] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5264] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5265] <... mount resumed>) = 0 [pid 5265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5265] <... futex resumed>) = 0 [pid 5265] umount2("./file0", MNT_DETACH [pid 5264] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5265] <... umount2 resumed>) = 0 [pid 5265] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5265] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] <... futex resumed>) = 0 [pid 5264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5264] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5264] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5266 attached , parent_tid=[5266], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5266 [pid 5266] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5266] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5266] <... futex resumed>) = 0 [pid 5266] umount2("./file0", MNT_DETACH) = 0 [pid 5266] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5266] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5264] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5264] exit_group(0 [pid 5265] <... futex resumed>) = ? [pid 5264] <... exit_group resumed>) = ? [pid 5265] +++ exited with 0 +++ [pid 5266] <... futex resumed>) = ? [pid 5266] +++ exited with 0 +++ [pid 5264] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5264, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5267 ./strace-static-x86_64: Process 5267 attached [pid 5267] set_robust_list(0x5555564465e0, 24) = 0 [pid 5267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5267] setpgid(0, 0) = 0 [pid 5267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5267] write(3, "1000", 4) = 4 [pid 5267] close(3) = 0 [pid 5267] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5267] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5267] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5268 attached [pid 5268] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] <... clone resumed>, parent_tid=[5268], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5268 [pid 5267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5267] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5268] <... mount resumed>) = 0 [pid 5268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5267] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5268] <... futex resumed>) = 0 [pid 5268] umount2("./file0", MNT_DETACH [pid 5267] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5268] <... umount2 resumed>) = 0 [pid 5267] <... futex resumed>) = 0 [pid 5268] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5268] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5267] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5267] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5269 attached , parent_tid=[5269], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5269 [pid 5269] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5269] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5269] <... futex resumed>) = 0 [pid 5269] umount2("./file0", MNT_DETACH [pid 5267] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5269] <... umount2 resumed>) = 0 [pid 5269] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5269] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5267] <... futex resumed>) = 0 [pid 5267] exit_group(0 [pid 5268] <... futex resumed>) = ? [pid 5267] <... exit_group resumed>) = ? [pid 5268] +++ exited with 0 +++ [pid 5269] <... futex resumed>) = ? [pid 5269] +++ exited with 0 +++ [pid 5267] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5267, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5270 ./strace-static-x86_64: Process 5270 attached [pid 5270] set_robust_list(0x5555564465e0, 24) = 0 [pid 5270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5270] setpgid(0, 0) = 0 [pid 5270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5270] write(3, "1000", 4) = 4 [pid 5270] close(3) = 0 [pid 5270] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5270] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5270] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5271 attached [pid 5271] set_robust_list(0x7fc84e09f9e0, 24 [pid 5270] <... clone resumed>, parent_tid=[5271], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5271 [pid 5271] <... set_robust_list resumed>) = 0 [pid 5271] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5271] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5271] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5271] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5271] <... mount resumed>) = 0 [pid 5271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5271] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5271] <... futex resumed>) = 0 [pid 5271] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5270] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5271] <... mount resumed>) = 0 [pid 5271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5270] <... futex resumed>) = 0 [pid 5270] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5271] umount2("./file0", MNT_DETACH [pid 5270] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5270] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5271] <... umount2 resumed>) = 0 [pid 5271] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5270] <... clone resumed>, parent_tid=[5272], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5272 [pid 5271] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5272 attached [pid 5272] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5272] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5271] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5270] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5270] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5272] <... futex resumed>) = 0 [pid 5272] umount2("./file0", MNT_DETACH) = 0 [pid 5272] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5270] <... futex resumed>) = 0 [pid 5270] exit_group(0) = ? [pid 5271] <... futex resumed>) = ? [pid 5272] +++ exited with 0 +++ [pid 5271] +++ exited with 0 +++ [pid 5270] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5270, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5273 ./strace-static-x86_64: Process 5273 attached [pid 5273] set_robust_list(0x5555564465e0, 24) = 0 [pid 5273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5273] setpgid(0, 0) = 0 [pid 5273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5273] write(3, "1000", 4) = 4 [pid 5273] close(3) = 0 [pid 5273] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5273] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5273] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5274], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5274 [pid 5273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5274 attached [pid 5274] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5274] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5274] <... futex resumed>) = 1 [pid 5274] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5274] <... futex resumed>) = 1 [pid 5274] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5273] <... futex resumed>) = 0 [pid 5273] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5273] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5273] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5274] <... futex resumed>) = 1 [pid 5274] umount2("./file0", MNT_DETACH [pid 5273] <... clone resumed>, parent_tid=[5275], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5275 [pid 5273] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5273] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5275 attached [pid 5274] <... umount2 resumed>) = 0 [pid 5274] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5274] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5275] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5275] umount2("./file0", MNT_DETACH) = 0 [pid 5275] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5273] <... futex resumed>) = 0 [pid 5273] exit_group(0) = ? [pid 5274] <... futex resumed>) = ? [pid 5275] +++ exited with 0 +++ [pid 5274] +++ exited with 0 +++ [pid 5273] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5273, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5276 ./strace-static-x86_64: Process 5276 attached [pid 5276] set_robust_list(0x5555564465e0, 24) = 0 [pid 5276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5276] setpgid(0, 0) = 0 [pid 5276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5276] write(3, "1000", 4) = 4 [pid 5276] close(3) = 0 [pid 5276] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5276] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5276] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5277 attached , parent_tid=[5277], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5277 [pid 5277] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5277] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5277] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5277] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5277] <... mount resumed>) = 0 [pid 5277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5277] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5276] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5277] <... mount resumed>) = 0 [pid 5277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5276] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5277] <... futex resumed>) = 0 [pid 5277] umount2("./file0", MNT_DETACH [pid 5276] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5277] <... umount2 resumed>) = 0 [pid 5277] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5277] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5276] <... futex resumed>) = 0 [pid 5276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5276] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5276] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5278], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5278 [pid 5276] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5276] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5278 attached [pid 5278] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5278] umount2("./file0", MNT_DETACH) = 0 [pid 5278] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5276] <... futex resumed>) = 0 [pid 5276] exit_group(0) = ? [pid 5277] <... futex resumed>) = ? [pid 5277] +++ exited with 0 +++ [pid 5278] +++ exited with 0 +++ [pid 5276] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5276, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5279 ./strace-static-x86_64: Process 5279 attached [pid 5279] set_robust_list(0x5555564465e0, 24) = 0 [pid 5279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5279] setpgid(0, 0) = 0 [pid 5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5279] write(3, "1000", 4) = 4 [pid 5279] close(3) = 0 [pid 5279] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5279] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5279] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5280 attached [pid 5280] set_robust_list(0x7fc84e09f9e0, 24 [pid 5279] <... clone resumed>, parent_tid=[5280], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5280 [pid 5280] <... set_robust_list resumed>) = 0 [pid 5279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5280] mkdir("./file0", 000 [pid 5279] <... futex resumed>) = 0 [pid 5279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5280] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5279] <... futex resumed>) = 0 [pid 5279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5280] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5279] <... futex resumed>) = 0 [pid 5279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5279] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5280] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5279] <... futex resumed>) = 0 [pid 5279] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5279] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5279] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5280] umount2("./file0", MNT_DETACH [pid 5279] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5281], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5281 [pid 5279] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5279] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5281 attached [pid 5281] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5281] umount2("./file0", MNT_DETACH) = 0 [pid 5280] <... umount2 resumed>) = 0 [pid 5281] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5279] <... futex resumed>) = 0 [pid 5281] <... futex resumed>) = 1 [pid 5280] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5281] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5280] <... futex resumed>) = 0 [pid 5280] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5279] exit_group(0) = ? [pid 5281] <... futex resumed>) = ? [pid 5280] <... futex resumed>) = ? [pid 5281] +++ exited with 0 +++ [pid 5280] +++ exited with 0 +++ [pid 5279] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5279, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5283 ./strace-static-x86_64: Process 5283 attached [pid 5283] set_robust_list(0x5555564465e0, 24) = 0 [pid 5283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5283] setpgid(0, 0) = 0 [pid 5283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5283] write(3, "1000", 4) = 4 [pid 5283] close(3) = 0 [pid 5283] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5283] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5283] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5284 attached [pid 5284] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5284] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] <... clone resumed>, parent_tid=[5284], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5284 [pid 5283] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] <... futex resumed>) = 0 [pid 5284] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5284] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5284] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5284] <... futex resumed>) = 0 [pid 5284] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5283] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] <... mount resumed>) = 0 [pid 5284] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5284] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5284] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5284] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5283] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5284] umount2("./file0", MNT_DETACH [pid 5283] <... futex resumed>) = 0 [pid 5283] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5283] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5283] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5285], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5285 [pid 5284] <... umount2 resumed>) = 0 [pid 5283] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5283] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5285 attached [pid 5285] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5285] umount2("./file0", MNT_DETACH [pid 5284] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5284] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5285] <... umount2 resumed>) = 0 [pid 5285] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5283] <... futex resumed>) = 0 [pid 5283] exit_group(0 [pid 5285] ????( [pid 5283] <... exit_group resumed>) = ? [pid 5285] <... ???? resumed>) = ? [pid 5284] <... futex resumed>) = ? [pid 5284] +++ exited with 0 +++ [pid 5285] +++ exited with 0 +++ [pid 5283] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5283, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5286 ./strace-static-x86_64: Process 5286 attached [pid 5286] set_robust_list(0x5555564465e0, 24) = 0 [pid 5286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5286] setpgid(0, 0) = 0 [pid 5286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5286] write(3, "1000", 4) = 4 [pid 5286] close(3) = 0 [pid 5286] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5286] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5286] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5287 attached , parent_tid=[5287], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5287 [pid 5287] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5287] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5287] <... futex resumed>) = 0 [pid 5287] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5287] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5286] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... futex resumed>) = 0 [pid 5286] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5287] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5287] <... futex resumed>) = 0 [pid 5287] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5286] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] <... mount resumed>) = 0 [pid 5287] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5287] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5286] <... futex resumed>) = 0 [pid 5287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5286] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5287] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5287] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5286] <... futex resumed>) = 0 [pid 5286] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5287] umount2("./file0", MNT_DETACH [pid 5286] <... futex resumed>) = 0 [pid 5286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5286] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5287] <... umount2 resumed>) = 0 [pid 5286] <... mprotect resumed>) = 0 [pid 5286] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5287] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5286] <... clone resumed>, parent_tid=[5288], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5288 [pid 5286] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5286] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5288 attached [pid 5288] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5288] umount2("./file0", MNT_DETACH [pid 5287] <... futex resumed>) = 0 [pid 5287] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5288] <... umount2 resumed>) = 0 [pid 5288] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5286] <... futex resumed>) = 0 [pid 5286] exit_group(0 [pid 5287] <... futex resumed>) = ? [pid 5286] <... exit_group resumed>) = ? [pid 5287] +++ exited with 0 +++ [pid 5288] <... futex resumed>) = ? [pid 5288] +++ exited with 0 +++ [pid 5286] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5289 ./strace-static-x86_64: Process 5289 attached [pid 5289] set_robust_list(0x5555564465e0, 24) = 0 [pid 5289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5289] setpgid(0, 0) = 0 [pid 5289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5289] write(3, "1000", 4) = 4 [pid 5289] close(3) = 0 [pid 5289] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5289] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5289] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5290 attached [pid 5290] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5290] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] <... clone resumed>, parent_tid=[5290], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5290 [pid 5289] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5290] <... futex resumed>) = 0 [pid 5290] mkdir("./file0", 000 [pid 5289] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5290] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5290] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5289] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5290] <... futex resumed>) = 0 [pid 5290] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5290] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5290] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5289] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5290] <... futex resumed>) = 0 [pid 5290] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5289] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5290] <... mount resumed>) = 0 [pid 5290] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5290] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5289] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5290] <... futex resumed>) = 0 [pid 5290] umount2("./file0", MNT_DETACH [pid 5289] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5290] <... umount2 resumed>) = 0 [pid 5289] <... futex resumed>) = 0 [pid 5290] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5290] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5289] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5289] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5291 attached , parent_tid=[5291], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5291 [pid 5291] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5291] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5291] <... futex resumed>) = 0 [pid 5291] umount2("./file0", MNT_DETACH [pid 5289] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5291] <... umount2 resumed>) = 0 [pid 5291] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5291] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5289] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5289] exit_group(0 [pid 5290] <... futex resumed>) = ? [pid 5289] <... exit_group resumed>) = ? [pid 5290] +++ exited with 0 +++ [pid 5291] <... futex resumed>) = ? [pid 5291] +++ exited with 0 +++ [pid 5289] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5289, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5292 ./strace-static-x86_64: Process 5292 attached [pid 5292] set_robust_list(0x5555564465e0, 24) = 0 [pid 5292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5292] setpgid(0, 0) = 0 [pid 5292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5292] write(3, "1000", 4) = 4 [pid 5292] close(3) = 0 [pid 5292] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5292] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5292] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5293 attached , parent_tid=[5293], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5293 [pid 5293] set_robust_list(0x7fc84e09f9e0, 24 [pid 5292] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... set_robust_list resumed>) = 0 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5293] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] <... futex resumed>) = 0 [pid 5293] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5292] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5292] <... futex resumed>) = 0 [pid 5293] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5292] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... mount resumed>) = 0 [pid 5293] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5293] <... futex resumed>) = 1 [pid 5292] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5293] <... mount resumed>) = 0 [pid 5293] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5293] umount2("./file0", MNT_DETACH [pid 5292] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5292] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5292] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5294 attached [pid 5293] <... umount2 resumed>) = 0 [pid 5293] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... clone resumed>, parent_tid=[5294], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5294 [pid 5294] set_robust_list(0x7fc84e07e9e0, 24 [pid 5293] <... futex resumed>) = 0 [pid 5294] <... set_robust_list resumed>) = 0 [pid 5292] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5293] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5294] umount2("./file0", MNT_DETACH [pid 5292] <... futex resumed>) = 0 [pid 5292] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5294] <... umount2 resumed>) = 0 [pid 5294] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5292] <... futex resumed>) = 0 [pid 5294] <... futex resumed>) = 1 [pid 5292] exit_group(0 [pid 5294] ????( [pid 5292] <... exit_group resumed>) = ? [pid 5294] <... ???? resumed>) = ? [pid 5293] <... futex resumed>) = ? [pid 5293] +++ exited with 0 +++ [pid 5294] +++ exited with 0 +++ [pid 5292] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5292, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5295 attached , child_tidptr=0x5555564465d0) = 5295 [pid 5295] set_robust_list(0x5555564465e0, 24) = 0 [pid 5295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5295] setpgid(0, 0) = 0 [pid 5295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5295] write(3, "1000", 4) = 4 [pid 5295] close(3) = 0 [pid 5295] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5295] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5295] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5296 attached , parent_tid=[5296], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5296 [pid 5296] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5296] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5296] <... futex resumed>) = 0 [pid 5296] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5295] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5296] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5295] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5296] <... futex resumed>) = 0 [pid 5296] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5295] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... mount resumed>) = 0 [pid 5296] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5296] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5295] <... futex resumed>) = 0 [pid 5295] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5296] <... futex resumed>) = 0 [pid 5296] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5295] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... mount resumed>) = 0 [pid 5296] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5295] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5295] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5295] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5297 attached [pid 5296] umount2("./file0", MNT_DETACH [pid 5297] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5295] <... clone resumed>, parent_tid=[5297], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5297 [pid 5295] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5295] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5296] <... umount2 resumed>) = 0 [pid 5296] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5296] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5297] umount2("./file0", MNT_DETACH) = 0 [pid 5297] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5295] <... futex resumed>) = 0 [pid 5295] exit_group(0) = ? [pid 5296] <... futex resumed>) = ? [pid 5296] +++ exited with 0 +++ [pid 5297] +++ exited with 0 +++ [pid 5295] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5295, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5298 ./strace-static-x86_64: Process 5298 attached [pid 5298] set_robust_list(0x5555564465e0, 24) = 0 [pid 5298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5298] setpgid(0, 0) = 0 [pid 5298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5298] write(3, "1000", 4) = 4 [pid 5298] close(3) = 0 [pid 5298] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5298] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5298] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5299 attached [pid 5299] set_robust_list(0x7fc84e09f9e0, 24 [pid 5298] <... clone resumed>, parent_tid=[5299], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5299 [pid 5299] <... set_robust_list resumed>) = 0 [pid 5298] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5299] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5299] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5299] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5299] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5298] <... futex resumed>) = 0 [pid 5298] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5298] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5298] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5299] umount2("./file0", MNT_DETACH [pid 5298] <... clone resumed>, parent_tid=[5300], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5300 [pid 5298] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5298] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5300 attached [pid 5300] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5300] umount2("./file0", MNT_DETACH [pid 5299] <... umount2 resumed>) = 0 [pid 5299] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5300] <... umount2 resumed>) = 0 [pid 5299] <... futex resumed>) = 0 [pid 5300] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5298] <... futex resumed>) = 0 [pid 5298] exit_group(0) = ? [pid 5300] <... futex resumed>) = ? [pid 5300] +++ exited with 0 +++ [pid 5299] +++ exited with 0 +++ [pid 5298] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5298, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5301 attached [pid 5301] set_robust_list(0x5555564465e0, 24) = 0 [pid 5301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5301] setpgid(0, 0) = 0 [pid 5301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 5301 [pid 5301] write(3, "1000", 4) = 4 [pid 5301] close(3) = 0 [pid 5301] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5301] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5301] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5302 attached , parent_tid=[5302], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5302 [pid 5302] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5302] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5302] mkdir("./file0", 000 [pid 5301] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5302] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5302] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5302] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5301] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5302] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5302] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5301] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5302] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5302] umount2("./file0", MNT_DETACH) = 0 [pid 5302] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5302] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5302] <... futex resumed>) = 0 [pid 5302] umount2("./file0", MNT_DETACH [pid 5301] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5302] <... umount2 resumed>) = 0 [pid 5302] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5302] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5301] exit_group(0) = ? [pid 5302] <... futex resumed>) = ? [pid 5302] +++ exited with 0 +++ [pid 5301] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5301, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5303 ./strace-static-x86_64: Process 5303 attached [pid 5303] set_robust_list(0x5555564465e0, 24) = 0 [pid 5303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5303] setpgid(0, 0) = 0 [pid 5303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5303] write(3, "1000", 4) = 4 [pid 5303] close(3) = 0 [pid 5303] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5303] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5303] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5304 attached , parent_tid=[5304], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5304 [pid 5304] set_robust_list(0x7fc84e09f9e0, 24 [pid 5303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] <... set_robust_list resumed>) = 0 [pid 5303] <... futex resumed>) = 0 [pid 5303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5304] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] <... futex resumed>) = 0 [pid 5304] <... futex resumed>) = 1 [pid 5303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5303] <... futex resumed>) = 0 [pid 5303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5304] <... mount resumed>) = 0 [pid 5304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] <... futex resumed>) = 0 [pid 5304] <... futex resumed>) = 1 [pid 5303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5304] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5303] <... futex resumed>) = 0 [pid 5303] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5304] <... mount resumed>) = 0 [pid 5304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5303] <... futex resumed>) = 0 [pid 5303] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5303] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5304] umount2("./file0", MNT_DETACH [pid 5303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5303] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5304] <... umount2 resumed>) = 0 [pid 5303] <... mprotect resumed>) = 0 [pid 5303] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5304] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5303] <... clone resumed>, parent_tid=[5305], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5305 [pid 5304] <... futex resumed>) = 0 [pid 5303] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5305 attached [pid 5304] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5303] <... futex resumed>) = 0 [pid 5305] set_robust_list(0x7fc84e07e9e0, 24 [pid 5303] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5305] <... set_robust_list resumed>) = 0 [pid 5305] umount2("./file0", MNT_DETACH) = 0 [pid 5305] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5303] <... futex resumed>) = 0 [pid 5303] exit_group(0) = ? [pid 5304] <... futex resumed>) = ? [pid 5305] +++ exited with 0 +++ [pid 5304] +++ exited with 0 +++ [pid 5303] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5303, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5306 ./strace-static-x86_64: Process 5306 attached [pid 5306] set_robust_list(0x5555564465e0, 24) = 0 [pid 5306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5306] setpgid(0, 0) = 0 [pid 5306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5306] write(3, "1000", 4) = 4 [pid 5306] close(3) = 0 [pid 5306] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5306] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5306] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5307 attached [pid 5307] set_robust_list(0x7fc84e09f9e0, 24 [pid 5306] <... clone resumed>, parent_tid=[5307], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5307 [pid 5307] <... set_robust_list resumed>) = 0 [pid 5306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5307] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5306] <... futex resumed>) = 0 [pid 5307] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5307] <... mount resumed>) = 0 [pid 5307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5306] <... futex resumed>) = 0 [pid 5307] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5306] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5307] <... mount resumed>) = 0 [pid 5307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5306] <... futex resumed>) = 0 [pid 5307] umount2("./file0", MNT_DETACH [pid 5306] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5306] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5307] <... umount2 resumed>) = 0 [pid 5307] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5306] <... mmap resumed>) = 0x7fc84e05e000 [pid 5306] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5307] <... futex resumed>) = 0 [pid 5306] <... mprotect resumed>) = 0 [pid 5307] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5306] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5308 attached [pid 5308] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5308] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5306] <... clone resumed>, parent_tid=[5308], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5308 [pid 5306] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5308] <... futex resumed>) = 0 [pid 5306] <... futex resumed>) = 1 [pid 5308] umount2("./file0", MNT_DETACH [pid 5306] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5308] <... umount2 resumed>) = 0 [pid 5308] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5306] <... futex resumed>) = 0 [pid 5308] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5306] exit_group(0) = ? [pid 5307] <... futex resumed>) = ? [pid 5308] <... futex resumed>) = ? [pid 5307] +++ exited with 0 +++ [pid 5308] +++ exited with 0 +++ [pid 5306] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5306, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5309 ./strace-static-x86_64: Process 5309 attached [pid 5309] set_robust_list(0x5555564465e0, 24) = 0 [pid 5309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5309] setpgid(0, 0) = 0 [pid 5309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5309] write(3, "1000", 4) = 4 [pid 5309] close(3) = 0 [pid 5309] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5309] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5309] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5310 attached [pid 5310] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] <... clone resumed>, parent_tid=[5310], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5310 [pid 5309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5310] <... futex resumed>) = 0 [pid 5309] <... futex resumed>) = 1 [pid 5310] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5310] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5310] <... mount resumed>) = 0 [pid 5310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5310] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5309] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5310] <... mount resumed>) = 0 [pid 5310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5309] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5310] <... futex resumed>) = 0 [pid 5309] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5310] umount2("./file0", MNT_DETACH [pid 5309] <... futex resumed>) = 0 [pid 5309] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5310] <... umount2 resumed>) = 0 [pid 5310] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5310] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] <... mmap resumed>) = 0x7fc84e05e000 [pid 5309] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5309] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5311 attached [pid 5311] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5311] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] <... clone resumed>, parent_tid=[5311], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5311 [pid 5309] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5311] <... futex resumed>) = 0 [pid 5311] umount2("./file0", MNT_DETACH) = 0 [pid 5311] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5311] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5309] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5309] exit_group(0) = ? [pid 5310] <... futex resumed>) = ? [pid 5310] +++ exited with 0 +++ [pid 5311] <... futex resumed>) = ? [pid 5311] +++ exited with 0 +++ [pid 5309] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5309, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5312 ./strace-static-x86_64: Process 5312 attached [pid 5312] set_robust_list(0x5555564465e0, 24) = 0 [pid 5312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5312] setpgid(0, 0) = 0 [pid 5312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5312] write(3, "1000", 4) = 4 [pid 5312] close(3) = 0 [pid 5312] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5312] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5312] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5313], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5313 [pid 5312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5313 attached [pid 5313] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5313] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5312] <... futex resumed>) = 0 [pid 5312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5313] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5312] <... futex resumed>) = 0 [pid 5312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5313] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5312] <... futex resumed>) = 0 [pid 5312] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5312] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5312] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5314], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5314 ./strace-static-x86_64: Process 5314 attached [pid 5312] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5314] set_robust_list(0x7fc84e07e9e0, 24 [pid 5312] <... futex resumed>) = 0 [pid 5314] <... set_robust_list resumed>) = 0 [pid 5314] umount2("./file0", MNT_DETACH [pid 5312] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5313] umount2("./file0", MNT_DETACH [pid 5314] <... umount2 resumed>) = 0 [pid 5314] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5312] <... futex resumed>) = 0 [pid 5314] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5313] <... umount2 resumed>) = 0 [pid 5313] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5313] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5312] exit_group(0) = ? [pid 5314] <... futex resumed>) = ? [pid 5313] <... futex resumed>) = ? [pid 5314] +++ exited with 0 +++ [pid 5313] +++ exited with 0 +++ [pid 5312] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5315 ./strace-static-x86_64: Process 5315 attached [pid 5315] set_robust_list(0x5555564465e0, 24) = 0 [pid 5315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5315] setpgid(0, 0) = 0 [pid 5315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5315] write(3, "1000", 4) = 4 [pid 5315] close(3) = 0 [pid 5315] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5315] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5315] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5316 attached , parent_tid=[5316], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5316 [pid 5316] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5316] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5316] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5316] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5315] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5316] <... mount resumed>) = 0 [pid 5316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5315] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5316] <... futex resumed>) = 0 [pid 5316] umount2("./file0", MNT_DETACH [pid 5315] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5316] <... umount2 resumed>) = 0 [pid 5316] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5316] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] <... futex resumed>) = 0 [pid 5315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5315] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5315] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5317 attached , parent_tid=[5317], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5317 [pid 5317] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5317] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5317] <... futex resumed>) = 0 [pid 5317] umount2("./file0", MNT_DETACH [pid 5315] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5317] <... umount2 resumed>) = 0 [pid 5317] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5317] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5315] exit_group(0 [pid 5316] <... futex resumed>) = ? [pid 5315] <... exit_group resumed>) = ? [pid 5316] +++ exited with 0 +++ [pid 5317] <... futex resumed>) = ? [pid 5317] +++ exited with 0 +++ [pid 5315] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5318 ./strace-static-x86_64: Process 5318 attached [pid 5318] set_robust_list(0x5555564465e0, 24) = 0 [pid 5318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5318] setpgid(0, 0) = 0 [pid 5318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5318] write(3, "1000", 4) = 4 [pid 5318] close(3) = 0 [pid 5318] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5318] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5318] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5319 attached , parent_tid=[5319], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5319 [pid 5319] set_robust_list(0x7fc84e09f9e0, 24 [pid 5318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] <... set_robust_list resumed>) = 0 [pid 5318] <... futex resumed>) = 0 [pid 5318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5319] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5318] <... futex resumed>) = 0 [pid 5319] <... futex resumed>) = 1 [pid 5318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5318] <... futex resumed>) = 0 [pid 5318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5319] <... mount resumed>) = 0 [pid 5319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5318] <... futex resumed>) = 0 [pid 5319] <... futex resumed>) = 1 [pid 5318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5318] <... futex resumed>) = 0 [pid 5318] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5319] <... mount resumed>) = 0 [pid 5319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5318] <... futex resumed>) = 0 [pid 5319] <... futex resumed>) = 1 [pid 5318] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5319] umount2("./file0", MNT_DETACH [pid 5318] <... futex resumed>) = 0 [pid 5318] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5318] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5318] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5320 attached [pid 5319] <... umount2 resumed>) = 0 [pid 5318] <... clone resumed>, parent_tid=[5320], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5320 [pid 5320] set_robust_list(0x7fc84e07e9e0, 24 [pid 5319] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5318] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5320] <... set_robust_list resumed>) = 0 [pid 5319] <... futex resumed>) = 0 [pid 5318] <... futex resumed>) = 0 [pid 5320] umount2("./file0", MNT_DETACH [pid 5319] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5318] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5320] <... umount2 resumed>) = 0 [pid 5320] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5318] <... futex resumed>) = 0 [pid 5318] exit_group(0) = ? [pid 5319] <... futex resumed>) = ? [pid 5319] +++ exited with 0 +++ [pid 5320] +++ exited with 0 +++ [pid 5318] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5321 ./strace-static-x86_64: Process 5321 attached [pid 5321] set_robust_list(0x5555564465e0, 24) = 0 [pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5321] setpgid(0, 0) = 0 [pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5321] write(3, "1000", 4) = 4 [pid 5321] close(3) = 0 [pid 5321] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5321] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5321] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5322 attached [pid 5322] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5321] <... clone resumed>, parent_tid=[5322], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5322 [pid 5321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5322] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5322] <... futex resumed>) = 0 [pid 5322] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5322] <... mount resumed>) = 0 [pid 5322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5321] <... futex resumed>) = 0 [pid 5321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5321] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5322] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5321] <... futex resumed>) = 0 [pid 5321] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5321] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5322] umount2("./file0", MNT_DETACH [pid 5321] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5321] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5323], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5323 [pid 5321] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5321] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5323 attached [pid 5323] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5323] umount2("./file0", MNT_DETACH [pid 5322] <... umount2 resumed>) = 0 [pid 5322] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5323] <... umount2 resumed>) = 0 [pid 5323] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5321] <... futex resumed>) = 0 [pid 5321] exit_group(0) = ? [pid 5323] <... futex resumed>) = ? [pid 5323] +++ exited with 0 +++ [pid 5322] +++ exited with 0 +++ [pid 5321] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5321, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5324 ./strace-static-x86_64: Process 5324 attached [pid 5324] set_robust_list(0x5555564465e0, 24) = 0 [pid 5324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5324] setpgid(0, 0) = 0 [pid 5324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5324] write(3, "1000", 4) = 4 [pid 5324] close(3) = 0 [pid 5324] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5324] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5324] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5325 attached [pid 5325] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5324] <... clone resumed>, parent_tid=[5325], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5325 [pid 5324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5325] <... futex resumed>) = 0 [pid 5325] mkdir("./file0", 000 [pid 5324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5325] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5324] <... futex resumed>) = 0 [pid 5324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5325] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5324] <... futex resumed>) = 0 [pid 5324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5324] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5325] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5324] <... futex resumed>) = 0 [pid 5324] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5324] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5324] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5324] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5326 attached , parent_tid=[5326], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5326 [pid 5324] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5324] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5325] umount2("./file0", MNT_DETACH [pid 5326] set_robust_list(0x7fc84e07e9e0, 24 [pid 5325] <... umount2 resumed>) = 0 [pid 5325] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5325] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5326] <... set_robust_list resumed>) = 0 [pid 5326] umount2("./file0", MNT_DETACH) = 0 [pid 5326] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5324] <... futex resumed>) = 0 [pid 5324] exit_group(0) = ? [pid 5325] <... futex resumed>) = ? [pid 5325] +++ exited with 0 +++ [pid 5326] +++ exited with 0 +++ [pid 5324] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5327 ./strace-static-x86_64: Process 5327 attached [pid 5327] set_robust_list(0x5555564465e0, 24) = 0 [pid 5327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5327] setpgid(0, 0) = 0 [pid 5327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5327] write(3, "1000", 4) = 4 [pid 5327] close(3) = 0 [pid 5327] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5327] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5327] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5328], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5328 [pid 5327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5328 attached [pid 5328] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5328] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5327] <... futex resumed>) = 0 [pid 5327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5328] <... futex resumed>) = 1 [pid 5328] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5327] <... futex resumed>) = 0 [pid 5327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5328] <... futex resumed>) = 1 [pid 5328] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5327] <... futex resumed>) = 0 [pid 5327] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5327] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5327] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5329], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5329 [pid 5327] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5327] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5328] <... futex resumed>) = 1 [pid 5328] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 5329 attached [pid 5329] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5328] <... umount2 resumed>) = 0 [pid 5328] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5328] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5329] umount2("./file0", MNT_DETACH) = 0 [pid 5329] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5327] <... futex resumed>) = 0 [pid 5327] exit_group(0) = ? [pid 5328] <... futex resumed>) = ? [pid 5328] +++ exited with 0 +++ [pid 5329] +++ exited with 0 +++ [pid 5327] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5327, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5330 ./strace-static-x86_64: Process 5330 attached [pid 5330] set_robust_list(0x5555564465e0, 24) = 0 [pid 5330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5330] setpgid(0, 0) = 0 [pid 5330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5330] write(3, "1000", 4) = 4 [pid 5330] close(3) = 0 [pid 5330] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5330] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5330] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5331 attached [pid 5331] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] <... clone resumed>, parent_tid=[5331], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5331 [pid 5330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5331] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5331] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5331] <... mount resumed>) = 0 [pid 5331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5331] <... futex resumed>) = 0 [pid 5330] <... futex resumed>) = 1 [pid 5331] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5330] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5331] <... mount resumed>) = 0 [pid 5331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] <... futex resumed>) = 0 [pid 5330] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5331] <... futex resumed>) = 0 [pid 5331] umount2("./file0", MNT_DETACH [pid 5330] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5330] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5331] <... umount2 resumed>) = 0 [pid 5331] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5330] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5331] <... futex resumed>) = 0 [pid 5331] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5332 attached [pid 5332] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5332] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] <... clone resumed>, parent_tid=[5332], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5332 [pid 5330] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5332] <... futex resumed>) = 0 [pid 5330] <... futex resumed>) = 1 [pid 5332] umount2("./file0", MNT_DETACH [pid 5330] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5332] <... umount2 resumed>) = 0 [pid 5332] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5330] <... futex resumed>) = 0 [pid 5332] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5330] exit_group(0) = ? [pid 5331] <... futex resumed>) = ? [pid 5331] +++ exited with 0 +++ [pid 5332] <... futex resumed>) = ? [pid 5332] +++ exited with 0 +++ [pid 5330] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5330, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5333 ./strace-static-x86_64: Process 5333 attached [pid 5333] set_robust_list(0x5555564465e0, 24) = 0 [pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5333] setpgid(0, 0) = 0 [pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5333] write(3, "1000", 4) = 4 [pid 5333] close(3) = 0 [pid 5333] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5333] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5333] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5334 attached , parent_tid=[5334], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5334 [pid 5334] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5334] mkdir("./file0", 000 [pid 5333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5334] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5333] <... futex resumed>) = 0 [pid 5333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5334] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5334] <... mount resumed>) = 0 [pid 5334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5333] <... futex resumed>) = 0 [pid 5333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5333] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5334] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5333] <... futex resumed>) = 0 [pid 5333] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5334] <... futex resumed>) = 0 [pid 5333] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5334] umount2("./file0", MNT_DETACH [pid 5333] <... futex resumed>) = 0 [pid 5333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5333] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5333] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5334] <... umount2 resumed>) = 0 [pid 5334] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5334] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5335 attached [pid 5335] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5335] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5333] <... clone resumed>, parent_tid=[5335], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5335 [pid 5333] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5335] <... futex resumed>) = 0 [pid 5333] <... futex resumed>) = 1 [pid 5335] umount2("./file0", MNT_DETACH [pid 5333] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5335] <... umount2 resumed>) = 0 [pid 5335] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5333] <... futex resumed>) = 0 [pid 5333] exit_group(0 [pid 5335] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5333] <... exit_group resumed>) = ? [pid 5334] <... futex resumed>) = ? [pid 5334] +++ exited with 0 +++ [pid 5335] <... futex resumed>) = ? [pid 5335] +++ exited with 0 +++ [pid 5333] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5336 ./strace-static-x86_64: Process 5336 attached [pid 5336] set_robust_list(0x5555564465e0, 24) = 0 [pid 5336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5336] setpgid(0, 0) = 0 [pid 5336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5336] write(3, "1000", 4) = 4 [pid 5336] close(3) = 0 [pid 5336] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5336] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5336] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5337], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5337 [pid 5336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5337 attached [pid 5337] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5337] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5336] <... futex resumed>) = 0 [pid 5336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5337] <... futex resumed>) = 1 [pid 5337] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5336] <... futex resumed>) = 0 [pid 5336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5336] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5337] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5336] <... futex resumed>) = 0 [pid 5336] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5336] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5336] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5337] umount2("./file0", MNT_DETACH [pid 5336] <... mprotect resumed>) = 0 [pid 5336] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5338], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5338 [pid 5336] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5337] <... umount2 resumed>) = 0 [pid 5336] <... futex resumed>) = 0 [pid 5336] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5338 attached [pid 5338] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5338] umount2("./file0", MNT_DETACH [pid 5337] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5338] <... umount2 resumed>) = 0 [pid 5337] <... futex resumed>) = 0 [pid 5338] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5336] <... futex resumed>) = 0 [pid 5336] exit_group(0) = ? [pid 5338] <... futex resumed>) = ? [pid 5337] +++ exited with 0 +++ [pid 5338] +++ exited with 0 +++ [pid 5336] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5336, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5339 ./strace-static-x86_64: Process 5339 attached [pid 5339] set_robust_list(0x5555564465e0, 24) = 0 [pid 5339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5339] setpgid(0, 0) = 0 [pid 5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5339] write(3, "1000", 4) = 4 [pid 5339] close(3) = 0 [pid 5339] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5339] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5339] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5340 attached , parent_tid=[5340], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5340 [pid 5340] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5340] <... futex resumed>) = 0 [pid 5340] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5340] <... futex resumed>) = 0 [pid 5340] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5340] <... mount resumed>) = 0 [pid 5340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5339] <... futex resumed>) = 0 [pid 5339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5339] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5340] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5339] <... futex resumed>) = 0 [pid 5339] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5339] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5339] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5339] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5341], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5341 [pid 5340] umount2("./file0", MNT_DETACH [pid 5339] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5339] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5341 attached [pid 5341] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5341] umount2("./file0", MNT_DETACH) = 0 [pid 5341] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5339] <... futex resumed>) = 0 [pid 5341] <... futex resumed>) = 1 [pid 5340] <... umount2 resumed>) = 0 [pid 5341] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5340] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5340] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5339] exit_group(0) = ? [pid 5340] <... futex resumed>) = ? [pid 5340] +++ exited with 0 +++ [pid 5341] <... futex resumed>) = ? [pid 5341] +++ exited with 0 +++ [pid 5339] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5339, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5342 ./strace-static-x86_64: Process 5342 attached [pid 5342] set_robust_list(0x5555564465e0, 24) = 0 [pid 5342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5342] setpgid(0, 0) = 0 [pid 5342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5342] write(3, "1000", 4) = 4 [pid 5342] close(3) = 0 [pid 5342] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5342] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5342] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5343 attached , parent_tid=[5343], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5343 [pid 5343] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5343] <... futex resumed>) = 0 [pid 5343] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5343] <... futex resumed>) = 0 [pid 5343] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5343] <... mount resumed>) = 0 [pid 5343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5342] <... futex resumed>) = 0 [pid 5342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5342] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5343] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] <... futex resumed>) = 0 [pid 5342] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5342] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5342] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5342] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5343] <... futex resumed>) = 1 [pid 5342] <... clone resumed>, parent_tid=[5344], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5344 [pid 5342] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5342] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5344 attached [pid 5344] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5344] umount2("./file0", MNT_DETACH) = 0 [pid 5344] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5342] <... futex resumed>) = 0 [pid 5344] <... futex resumed>) = 1 [pid 5344] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5343] umount2("./file0", MNT_DETACH) = 0 [pid 5343] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5343] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5342] exit_group(0) = ? [pid 5344] <... futex resumed>) = ? [pid 5344] +++ exited with 0 +++ [pid 5343] <... futex resumed>) = ? [pid 5343] +++ exited with 0 +++ [pid 5342] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5342, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5345 ./strace-static-x86_64: Process 5345 attached [pid 5345] set_robust_list(0x5555564465e0, 24) = 0 [pid 5345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5345] setpgid(0, 0) = 0 [pid 5345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5345] write(3, "1000", 4) = 4 [pid 5345] close(3) = 0 [pid 5345] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5345] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5345] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5346 attached [pid 5346] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] <... clone resumed>, parent_tid=[5346], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5346 [pid 5345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5346] mkdir("./file0", 000 [pid 5345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5346] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5346] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5346] <... mount resumed>) = 0 [pid 5346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5346] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5345] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5346] <... mount resumed>) = 0 [pid 5346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] <... futex resumed>) = 0 [pid 5345] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5346] <... futex resumed>) = 0 [pid 5346] umount2("./file0", MNT_DETACH [pid 5345] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5346] <... umount2 resumed>) = 0 [pid 5345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5346] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5345] <... mmap resumed>) = 0x7fc84e05e000 [pid 5345] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5346] <... futex resumed>) = 0 [pid 5346] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] <... mprotect resumed>) = 0 [pid 5345] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5347 attached , parent_tid=[5347], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5347 [pid 5347] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5347] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5347] <... futex resumed>) = 0 [pid 5347] umount2("./file0", MNT_DETACH) = 0 [pid 5345] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5347] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5345] <... futex resumed>) = 0 [pid 5347] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5345] exit_group(0) = ? [pid 5346] <... futex resumed>) = ? [pid 5346] +++ exited with 0 +++ [pid 5347] <... futex resumed>) = ? [pid 5347] +++ exited with 0 +++ [pid 5345] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5345, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5348 attached , child_tidptr=0x5555564465d0) = 5348 [pid 5348] set_robust_list(0x5555564465e0, 24) = 0 [pid 5348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5348] setpgid(0, 0) = 0 [pid 5348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5348] write(3, "1000", 4) = 4 [pid 5348] close(3) = 0 [pid 5348] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5348] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5348] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5349 attached , parent_tid=[5349], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5349 [pid 5349] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5349] <... mount resumed>) = 0 [pid 5349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5348] <... futex resumed>) = 0 [pid 5348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5348] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5349] <... mount resumed>) = 0 [pid 5349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5348] <... futex resumed>) = 0 [pid 5348] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5349] <... futex resumed>) = 0 [pid 5349] umount2("./file0", MNT_DETACH [pid 5348] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5349] <... umount2 resumed>) = 0 [pid 5348] <... futex resumed>) = 0 [pid 5349] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5349] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5348] <... mmap resumed>) = 0x7fc84e05e000 [pid 5348] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5348] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5350 attached [pid 5350] set_robust_list(0x7fc84e07e9e0, 24 [pid 5348] <... clone resumed>, parent_tid=[5350], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5350 [pid 5350] <... set_robust_list resumed>) = 0 [pid 5348] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5350] umount2("./file0", MNT_DETACH [pid 5348] <... futex resumed>) = 0 [pid 5348] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5350] <... umount2 resumed>) = 0 [pid 5350] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5348] <... futex resumed>) = 0 [pid 5350] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5348] exit_group(0 [pid 5350] <... futex resumed>) = ? [pid 5348] <... exit_group resumed>) = ? [pid 5349] <... futex resumed>) = ? [pid 5349] +++ exited with 0 +++ [pid 5350] +++ exited with 0 +++ [pid 5348] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5351 attached , child_tidptr=0x5555564465d0) = 5351 [pid 5351] set_robust_list(0x5555564465e0, 24) = 0 [pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5351] setpgid(0, 0) = 0 [pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5351] write(3, "1000", 4) = 4 [pid 5351] close(3) = 0 [pid 5351] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5351] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5351] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5352 attached , parent_tid=[5352], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5352 [pid 5352] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5352] <... futex resumed>) = 0 [pid 5351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5352] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5351] <... futex resumed>) = 0 [pid 5352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5352] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5351] <... futex resumed>) = 0 [pid 5351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5352] <... mount resumed>) = 0 [pid 5352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5351] <... futex resumed>) = 0 [pid 5352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5351] <... futex resumed>) = 0 [pid 5352] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5351] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5352] <... mount resumed>) = 0 [pid 5352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5351] <... futex resumed>) = 0 [pid 5352] umount2("./file0", MNT_DETACH [pid 5351] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5351] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5352] <... umount2 resumed>) = 0 [pid 5351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5352] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5351] <... mmap resumed>) = 0x7fc84e05e000 [pid 5352] <... futex resumed>) = 0 [pid 5351] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5352] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5351] <... mprotect resumed>) = 0 [pid 5351] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5353 attached , parent_tid=[5353], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5353 [pid 5353] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5353] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5351] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5353] <... futex resumed>) = 0 [pid 5353] umount2("./file0", MNT_DETACH [pid 5351] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5353] <... umount2 resumed>) = 0 [pid 5353] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5353] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5351] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5351] exit_group(0) = ? [pid 5352] <... futex resumed>) = ? [pid 5353] <... futex resumed>) = ? [pid 5352] +++ exited with 0 +++ [pid 5353] +++ exited with 0 +++ [pid 5351] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5354 ./strace-static-x86_64: Process 5354 attached [pid 5354] set_robust_list(0x5555564465e0, 24) = 0 [pid 5354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5354] setpgid(0, 0) = 0 [pid 5354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5354] write(3, "1000", 4) = 4 [pid 5354] close(3) = 0 [pid 5354] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5354] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5354] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5355 attached , parent_tid=[5355], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5355 [pid 5354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5355] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5355] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5354] <... futex resumed>) = 0 [pid 5355] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5355] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5354] <... futex resumed>) = 0 [pid 5355] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5355] <... mount resumed>) = 0 [pid 5355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5354] <... futex resumed>) = 0 [pid 5354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5354] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5355] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5354] <... futex resumed>) = 0 [pid 5354] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5355] umount2("./file0", MNT_DETACH [pid 5354] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5354] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5354] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5356], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5356 [pid 5354] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5354] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5356 attached [pid 5356] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5356] umount2("./file0", MNT_DETACH [pid 5355] <... umount2 resumed>) = 0 [pid 5355] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5356] <... umount2 resumed>) = 0 [pid 5356] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5354] <... futex resumed>) = 0 [pid 5354] exit_group(0) = ? [pid 5356] <... futex resumed>) = ? [pid 5356] +++ exited with 0 +++ [pid 5355] <... futex resumed>) = ? [pid 5355] +++ exited with 0 +++ [pid 5354] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5354, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5357 ./strace-static-x86_64: Process 5357 attached [pid 5357] set_robust_list(0x5555564465e0, 24) = 0 [pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5357] setpgid(0, 0) = 0 [pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5357] write(3, "1000", 4) = 4 [pid 5357] close(3) = 0 [pid 5357] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5357] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5357] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5358 attached [pid 5358] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5357] <... clone resumed>, parent_tid=[5358], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5358 [pid 5357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5358] mkdir("./file0", 000 [pid 5357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5358] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5358] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5358] <... mount resumed>) = 0 [pid 5358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5358] <... futex resumed>) = 0 [pid 5358] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5357] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5358] <... mount resumed>) = 0 [pid 5358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5357] <... futex resumed>) = 0 [pid 5357] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5357] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5358] umount2("./file0", MNT_DETACH [pid 5357] <... mmap resumed>) = 0x7fc84e05e000 [pid 5358] <... umount2 resumed>) = 0 [pid 5358] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5358] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5357] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5357] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5359 attached , parent_tid=[5359], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5359 [pid 5359] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5359] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5357] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5359] <... futex resumed>) = 0 [pid 5359] umount2("./file0", MNT_DETACH [pid 5357] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5359] <... umount2 resumed>) = 0 [pid 5359] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5359] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5357] exit_group(0 [pid 5358] <... futex resumed>) = ? [pid 5357] <... exit_group resumed>) = ? [pid 5358] +++ exited with 0 +++ [pid 5359] <... futex resumed>) = ? [pid 5359] +++ exited with 0 +++ [pid 5357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5357, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5360 attached , child_tidptr=0x5555564465d0) = 5360 [pid 5360] set_robust_list(0x5555564465e0, 24) = 0 [pid 5360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5360] setpgid(0, 0) = 0 [pid 5360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5360] write(3, "1000", 4) = 4 [pid 5360] close(3) = 0 [pid 5360] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5360] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5360] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5361 attached , parent_tid=[5361], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5361 [pid 5360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5361] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5361] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5360] <... futex resumed>) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5361] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5361] <... mount resumed>) = 0 [pid 5361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5360] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5361] <... futex resumed>) = 0 [pid 5360] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5361] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5360] <... futex resumed>) = 0 [pid 5360] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5360] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5361] umount2("./file0", MNT_DETACH [pid 5360] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5361] <... umount2 resumed>) = 0 [pid 5360] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5362], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5362 [pid 5360] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5360] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5362 attached [pid 5362] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5362] umount2("./file0", MNT_DETACH [pid 5361] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5362] <... umount2 resumed>) = 0 [pid 5362] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5361] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5362] <... futex resumed>) = 1 [pid 5360] <... futex resumed>) = 0 [pid 5362] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5360] exit_group(0) = ? [pid 5361] <... futex resumed>) = 231 [pid 5362] <... futex resumed>) = ? [pid 5361] +++ exited with 0 +++ [pid 5362] +++ exited with 0 +++ [pid 5360] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5360, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5363 ./strace-static-x86_64: Process 5363 attached [pid 5363] set_robust_list(0x5555564465e0, 24) = 0 [pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5363] setpgid(0, 0) = 0 [pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5363] write(3, "1000", 4) = 4 [pid 5363] close(3) = 0 [pid 5363] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5363] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5363] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5364 attached [pid 5364] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5364] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5363] <... clone resumed>, parent_tid=[5364], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5364 [pid 5363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5364] <... futex resumed>) = 0 [pid 5364] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5363] <... futex resumed>) = 0 [pid 5363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5364] <... futex resumed>) = 1 [pid 5364] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5363] <... futex resumed>) = 0 [pid 5363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5363] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5364] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5363] <... futex resumed>) = 0 [pid 5363] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5363] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5363] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5363] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5365 attached , parent_tid=[5365], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5365 [pid 5365] set_robust_list(0x7fc84e07e9e0, 24 [pid 5363] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5365] <... set_robust_list resumed>) = 0 [pid 5363] <... futex resumed>) = 0 [pid 5365] umount2("./file0", MNT_DETACH [pid 5363] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5364] umount2("./file0", MNT_DETACH [pid 5365] <... umount2 resumed>) = 0 [pid 5365] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5364] <... umount2 resumed>) = 0 [pid 5365] <... futex resumed>) = 1 [pid 5364] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5365] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5364] <... futex resumed>) = 0 [pid 5364] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5363] <... futex resumed>) = 0 [pid 5363] exit_group(0) = ? [pid 5365] <... futex resumed>) = 231 [pid 5364] <... futex resumed>) = ? [pid 5365] +++ exited with 0 +++ [pid 5364] +++ exited with 0 +++ [pid 5363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5363, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5366 attached , child_tidptr=0x5555564465d0) = 5366 [pid 5366] set_robust_list(0x5555564465e0, 24) = 0 [pid 5366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5366] setpgid(0, 0) = 0 [pid 5366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5366] write(3, "1000", 4) = 4 [pid 5366] close(3) = 0 [pid 5366] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5366] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5366] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5367 attached , parent_tid=[5367], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5367 [pid 5367] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5367] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5367] <... futex resumed>) = 0 [pid 5366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5367] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5366] <... futex resumed>) = 0 [pid 5366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5367] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5366] <... futex resumed>) = 0 [pid 5366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5366] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5367] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5366] <... futex resumed>) = 0 [pid 5366] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5367] umount2("./file0", MNT_DETACH [pid 5366] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5366] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5366] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5367] <... umount2 resumed>) = 0 [pid 5367] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5366] <... clone resumed>, parent_tid=[5368], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5368 [pid 5366] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5366] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5368 attached [pid 5368] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5368] umount2("./file0", MNT_DETACH [pid 5367] <... futex resumed>) = 0 [pid 5368] <... umount2 resumed>) = 0 [pid 5368] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5366] <... futex resumed>) = 0 [pid 5366] exit_group(0) = ? [pid 5368] <... futex resumed>) = ? [pid 5368] +++ exited with 0 +++ [pid 5367] +++ exited with 0 +++ [pid 5366] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5369 ./strace-static-x86_64: Process 5369 attached [pid 5369] set_robust_list(0x5555564465e0, 24) = 0 [pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5369] setpgid(0, 0) = 0 [pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5369] write(3, "1000", 4) = 4 [pid 5369] close(3) = 0 [pid 5369] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5369] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5369] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5370 attached [pid 5370] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5369] <... clone resumed>, parent_tid=[5370], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5370 [pid 5369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5370] <... futex resumed>) = 0 [pid 5369] <... futex resumed>) = 1 [pid 5370] mkdir("./file0", 000 [pid 5369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5370] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5369] <... futex resumed>) = 0 [pid 5369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5370] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5369] <... futex resumed>) = 0 [pid 5370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5369] <... futex resumed>) = 0 [pid 5370] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5369] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5370] <... mount resumed>) = 0 [pid 5370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5369] <... futex resumed>) = 0 [pid 5370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5369] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5370] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5369] <... futex resumed>) = 0 [pid 5370] umount2("./file0", MNT_DETACH [pid 5369] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5370] <... umount2 resumed>) = 0 [pid 5369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5370] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5369] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5370] <... futex resumed>) = 0 [pid 5370] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5369] <... mprotect resumed>) = 0 [pid 5369] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5371 attached , parent_tid=[5371], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5371 [pid 5371] set_robust_list(0x7fc84e07e9e0, 24 [pid 5369] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5371] <... set_robust_list resumed>) = 0 [pid 5369] <... futex resumed>) = 0 [pid 5371] umount2("./file0", MNT_DETACH [pid 5369] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5371] <... umount2 resumed>) = 0 [pid 5371] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5369] <... futex resumed>) = 0 [pid 5371] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5369] exit_group(0 [pid 5370] <... futex resumed>) = ? [pid 5369] <... exit_group resumed>) = ? [pid 5371] <... futex resumed>) = ? [pid 5370] +++ exited with 0 +++ [pid 5371] +++ exited with 0 +++ [pid 5369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5372 attached , child_tidptr=0x5555564465d0) = 5372 [pid 5372] set_robust_list(0x5555564465e0, 24) = 0 [pid 5372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5372] setpgid(0, 0) = 0 [pid 5372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5372] write(3, "1000", 4) = 4 [pid 5372] close(3) = 0 [pid 5372] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5372] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5372] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5373 attached , parent_tid=[5373], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5373 [pid 5372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5373] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5373] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5372] <... futex resumed>) = 0 [pid 5372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5373] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5372] <... futex resumed>) = 0 [pid 5372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5372] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5373] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5372] <... futex resumed>) = 0 [pid 5372] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5372] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5372] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5372] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5374], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5374 [pid 5372] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5373] umount2("./file0", MNT_DETACH [pid 5372] <... futex resumed>) = 0 [pid 5372] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5374 attached [pid 5374] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5374] umount2("./file0", MNT_DETACH) = 0 [pid 5374] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5372] <... futex resumed>) = 0 [pid 5374] <... futex resumed>) = 1 [pid 5374] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5373] <... umount2 resumed>) = 0 [pid 5373] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5373] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5372] exit_group(0) = ? [pid 5373] <... futex resumed>) = ? [pid 5373] +++ exited with 0 +++ [pid 5374] <... futex resumed>) = ? [pid 5374] +++ exited with 0 +++ [pid 5372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5372, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5375 ./strace-static-x86_64: Process 5375 attached [pid 5375] set_robust_list(0x5555564465e0, 24) = 0 [pid 5375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5375] setpgid(0, 0) = 0 [pid 5375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5375] write(3, "1000", 4) = 4 [pid 5375] close(3) = 0 [pid 5375] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5375] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5375] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5376 attached , parent_tid=[5376], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5376 [pid 5376] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5376] <... futex resumed>) = 0 [pid 5375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5376] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5375] <... futex resumed>) = 0 [pid 5375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5376] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5375] <... futex resumed>) = 0 [pid 5375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5376] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5375] <... futex resumed>) = 0 [pid 5375] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5376] <... mount resumed>) = 0 [pid 5376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5375] <... futex resumed>) = 0 [pid 5376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5375] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5375] <... futex resumed>) = 0 [pid 5376] umount2("./file0", MNT_DETACH [pid 5375] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5376] <... umount2 resumed>) = 0 [pid 5375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5376] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5375] <... mmap resumed>) = 0x7fc84e05e000 [pid 5376] <... futex resumed>) = 0 [pid 5375] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE [pid 5376] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5375] <... mprotect resumed>) = 0 [pid 5375] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5377 attached [pid 5377] set_robust_list(0x7fc84e07e9e0, 24 [pid 5375] <... clone resumed>, parent_tid=[5377], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5377 [pid 5377] <... set_robust_list resumed>) = 0 [pid 5375] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5377] umount2("./file0", MNT_DETACH [pid 5375] <... futex resumed>) = 0 [pid 5375] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5377] <... umount2 resumed>) = 0 [pid 5377] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5375] <... futex resumed>) = 0 [pid 5377] <... futex resumed>) = 1 [pid 5375] exit_group(0 [pid 5377] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5376] <... futex resumed>) = ? [pid 5375] <... exit_group resumed>) = ? [pid 5377] +++ exited with 0 +++ [pid 5376] +++ exited with 0 +++ [pid 5375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5378 ./strace-static-x86_64: Process 5378 attached [pid 5378] set_robust_list(0x5555564465e0, 24) = 0 [pid 5378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5378] setpgid(0, 0) = 0 [pid 5378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5378] write(3, "1000", 4) = 4 [pid 5378] close(3) = 0 [pid 5378] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5378] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5378] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5379], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5379 [pid 5378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5379 attached [pid 5379] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5379] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5378] <... futex resumed>) = 0 [pid 5378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5379] <... futex resumed>) = 1 [pid 5379] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5378] <... futex resumed>) = 0 [pid 5379] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5379] <... mount resumed>) = 0 [pid 5379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5378] <... futex resumed>) = 0 [pid 5378] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5378] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5378] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5380 attached [pid 5379] umount2("./file0", MNT_DETACH [pid 5378] <... clone resumed>, parent_tid=[5380], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5380 [pid 5378] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5378] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5379] <... umount2 resumed>) = 0 [pid 5380] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5380] umount2("./file0", MNT_DETACH) = 0 [pid 5380] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5378] <... futex resumed>) = 0 [pid 5380] <... futex resumed>) = 1 [pid 5379] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5380] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5379] <... futex resumed>) = 0 [pid 5379] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5378] exit_group(0 [pid 5380] <... futex resumed>) = 230 [pid 5378] <... exit_group resumed>) = ? [pid 5379] <... futex resumed>) = ? [pid 5380] +++ exited with 0 +++ [pid 5379] +++ exited with 0 +++ [pid 5378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5381 attached , child_tidptr=0x5555564465d0) = 5381 [pid 5381] set_robust_list(0x5555564465e0, 24) = 0 [pid 5381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5381] setpgid(0, 0) = 0 [pid 5381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5381] write(3, "1000", 4) = 4 [pid 5381] close(3) = 0 [pid 5381] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5381] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5381] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5382 attached , parent_tid=[5382], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5382 [pid 5382] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5382] <... futex resumed>) = 0 [pid 5382] mkdir("./file0", 000 [pid 5381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5382] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5381] <... futex resumed>) = 0 [pid 5381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5382] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5381] <... futex resumed>) = 0 [pid 5381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5381] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5382] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5381] <... futex resumed>) = 0 [pid 5381] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5381] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5381] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5381] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5381] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5383], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5383 [pid 5382] umount2("./file0", MNT_DETACH [pid 5381] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5381] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5383 attached [pid 5383] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5383] umount2("./file0", MNT_DETACH) = 0 [pid 5383] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5381] <... futex resumed>) = 0 [pid 5383] <... futex resumed>) = 1 [pid 5383] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5382] <... umount2 resumed>) = 0 [pid 5382] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5382] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5381] exit_group(0) = ? [pid 5383] <... futex resumed>) = ? [pid 5383] +++ exited with 0 +++ [pid 5382] <... futex resumed>) = ? [pid 5382] +++ exited with 0 +++ [pid 5381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5381, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5384 attached , child_tidptr=0x5555564465d0) = 5384 [pid 5384] set_robust_list(0x5555564465e0, 24) = 0 [pid 5384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5384] setpgid(0, 0) = 0 [pid 5384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5384] write(3, "1000", 4) = 4 [pid 5384] close(3) = 0 [pid 5384] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5384] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5384] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5385], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5385 [pid 5384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 5385 attached [pid 5385] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5385] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5385] <... futex resumed>) = 0 [pid 5385] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5384] <... futex resumed>) = 0 [pid 5384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5384] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5385] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5384] <... futex resumed>) = 0 [pid 5384] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5385] umount2("./file0", MNT_DETACH [pid 5384] <... futex resumed>) = 0 [pid 5384] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5385] <... umount2 resumed>) = 0 [pid 5384] <... futex resumed>) = 0 [pid 5385] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5385] <... futex resumed>) = 0 [pid 5384] <... mmap resumed>) = 0x7fc84e05e000 [pid 5385] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5384] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5384] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5386], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5386 ./strace-static-x86_64: Process 5386 attached [pid 5386] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5384] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5386] <... futex resumed>) = 0 [pid 5384] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5386] umount2("./file0", MNT_DETACH) = 0 [pid 5386] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5384] <... futex resumed>) = 0 [pid 5386] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5384] exit_group(0) = ? [pid 5386] <... futex resumed>) = ? [pid 5386] +++ exited with 0 +++ [pid 5385] <... futex resumed>) = ? [pid 5385] +++ exited with 0 +++ [pid 5384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5387 ./strace-static-x86_64: Process 5387 attached [pid 5387] set_robust_list(0x5555564465e0, 24) = 0 [pid 5387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5387] setpgid(0, 0) = 0 [pid 5387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5387] write(3, "1000", 4) = 4 [pid 5387] close(3) = 0 [pid 5387] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5387] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5387] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5388], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5388 [pid 5387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5388 attached [pid 5388] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5388] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5387] <... futex resumed>) = 0 [pid 5388] <... futex resumed>) = 1 [pid 5387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5388] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5387] <... futex resumed>) = 0 [pid 5388] <... futex resumed>) = 1 [pid 5387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5388] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5387] <... futex resumed>) = 0 [pid 5387] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5388] <... mount resumed>) = 0 [pid 5388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5387] <... futex resumed>) = 0 [pid 5388] <... futex resumed>) = 1 [pid 5387] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5388] umount2("./file0", MNT_DETACH [pid 5387] <... futex resumed>) = 0 [pid 5387] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5387] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5387] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5388] <... umount2 resumed>) = 0 [pid 5387] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5388] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5389 attached ) = 0 [pid 5387] <... clone resumed>, parent_tid=[5389], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5389 [pid 5388] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5389] set_robust_list(0x7fc84e07e9e0, 24 [pid 5387] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5389] <... set_robust_list resumed>) = 0 [pid 5387] <... futex resumed>) = 0 [pid 5389] umount2("./file0", MNT_DETACH [pid 5387] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5389] <... umount2 resumed>) = 0 [pid 5389] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5387] <... futex resumed>) = 0 [pid 5389] <... futex resumed>) = 1 [pid 5389] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5387] exit_group(0) = ? [pid 5388] <... futex resumed>) = ? [pid 5388] +++ exited with 0 +++ [pid 5389] <... futex resumed>) = ? [pid 5389] +++ exited with 0 +++ [pid 5387] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5390 ./strace-static-x86_64: Process 5390 attached [pid 5390] set_robust_list(0x5555564465e0, 24) = 0 [pid 5390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5390] setpgid(0, 0) = 0 [pid 5390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5390] write(3, "1000", 4) = 4 [pid 5390] close(3) = 0 [pid 5390] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5390] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5390] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5391 attached , parent_tid=[5391], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5391 [pid 5391] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5391] mkdir("./file0", 000 [pid 5390] <... futex resumed>) = 0 [pid 5391] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5391] <... futex resumed>) = 0 [pid 5390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5391] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5390] <... futex resumed>) = 0 [pid 5391] <... mount resumed>) = 0 [pid 5390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5390] <... futex resumed>) = 0 [pid 5390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5390] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5391] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5390] <... futex resumed>) = 0 [pid 5390] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5390] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5390] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5391] umount2("./file0", MNT_DETACH [pid 5390] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5392], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5392 [pid 5390] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5390] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5392 attached [pid 5392] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5392] umount2("./file0", MNT_DETACH) = 0 [pid 5392] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5390] <... futex resumed>) = 0 [pid 5392] <... futex resumed>) = 1 [pid 5392] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5391] <... umount2 resumed>) = 0 [pid 5391] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5391] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5390] exit_group(0) = ? [pid 5391] <... futex resumed>) = ? [pid 5391] +++ exited with 0 +++ [pid 5392] <... futex resumed>) = ? [pid 5392] +++ exited with 0 +++ [pid 5390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5393 attached , child_tidptr=0x5555564465d0) = 5393 [pid 5393] set_robust_list(0x5555564465e0, 24) = 0 [pid 5393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5393] setpgid(0, 0) = 0 [pid 5393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5393] write(3, "1000", 4) = 4 [pid 5393] close(3) = 0 [pid 5393] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5393] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5393] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5394], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5394 [pid 5393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5394 attached [pid 5394] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5394] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5393] <... futex resumed>) = 0 [pid 5393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5394] <... futex resumed>) = 1 [pid 5394] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5393] <... futex resumed>) = 0 [pid 5394] <... futex resumed>) = 1 [pid 5393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5394] mount("./file0", "./file0", "incremental-fs", 0, NULL [pid 5393] <... futex resumed>) = 0 [pid 5393] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5394] <... mount resumed>) = 0 [pid 5394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5393] <... futex resumed>) = 0 [pid 5394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5393] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5393] <... futex resumed>) = 0 [pid 5394] umount2("./file0", MNT_DETACH [pid 5393] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5393] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5393] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5395 attached , parent_tid=[5395], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5395 [pid 5393] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5393] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5394] <... umount2 resumed>) = 0 [pid 5394] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5394] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5395] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5395] umount2("./file0", MNT_DETACH) = 0 [pid 5395] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5393] <... futex resumed>) = 0 [pid 5393] exit_group(0 [pid 5394] <... futex resumed>) = ? [pid 5393] <... exit_group resumed>) = ? [pid 5394] +++ exited with 0 +++ [pid 5395] +++ exited with 0 +++ [pid 5393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5396 ./strace-static-x86_64: Process 5396 attached [pid 5396] set_robust_list(0x5555564465e0, 24) = 0 [pid 5396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5396] setpgid(0, 0) = 0 [pid 5396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5396] write(3, "1000", 4) = 4 [pid 5396] close(3) = 0 [pid 5396] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5396] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5396] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5397 attached , parent_tid=[5397], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5397 [pid 5397] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5397] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5397] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5397] <... futex resumed>) = 0 [pid 5397] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5397] <... mount resumed>) = 0 [pid 5397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5396] <... futex resumed>) = 0 [pid 5396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5396] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5397] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5396] <... futex resumed>) = 0 [pid 5396] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5396] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5396] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5396] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5397] umount2("./file0", MNT_DETACH [pid 5396] <... clone resumed>, parent_tid=[5398], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5398 [pid 5396] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5396] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5398 attached [pid 5398] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5398] umount2("./file0", MNT_DETACH [pid 5397] <... umount2 resumed>) = 0 [pid 5397] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5398] <... umount2 resumed>) = 0 [pid 5398] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5396] <... futex resumed>) = 0 [pid 5396] exit_group(0) = ? [pid 5398] <... futex resumed>) = ? [pid 5398] +++ exited with 0 +++ [pid 5397] <... futex resumed>) = ? [pid 5397] +++ exited with 0 +++ [pid 5396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5399 ./strace-static-x86_64: Process 5399 attached [pid 5399] set_robust_list(0x5555564465e0, 24) = 0 [pid 5399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5399] setpgid(0, 0) = 0 [pid 5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5399] write(3, "1000", 4) = 4 [pid 5399] close(3) = 0 [pid 5399] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5399] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5399] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5400], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5400 ./strace-static-x86_64: Process 5400 attached [pid 5400] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] <... futex resumed>) = 0 [pid 5400] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] <... futex resumed>) = 0 [pid 5400] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5400] <... mount resumed>) = 0 [pid 5400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5399] <... futex resumed>) = 0 [pid 5399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] <... futex resumed>) = 0 [pid 5399] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5400] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5399] <... futex resumed>) = 0 [pid 5399] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5399] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5400] umount2("./file0", MNT_DETACH [pid 5399] <... futex resumed>) = 0 [pid 5399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5399] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5399] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5400] <... umount2 resumed>) = 0 [pid 5399] <... clone resumed>, parent_tid=[5401], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5401 [pid 5399] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5399] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5401 attached [pid 5400] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5401] set_robust_list(0x7fc84e07e9e0, 24 [pid 5400] <... futex resumed>) = 0 [pid 5400] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5401] <... set_robust_list resumed>) = 0 [pid 5401] umount2("./file0", MNT_DETACH) = 0 [pid 5401] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5399] <... futex resumed>) = 0 [pid 5399] exit_group(0) = ? [pid 5400] <... futex resumed>) = ? [pid 5400] +++ exited with 0 +++ [pid 5401] +++ exited with 0 +++ [pid 5399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5402 ./strace-static-x86_64: Process 5402 attached [pid 5402] set_robust_list(0x5555564465e0, 24) = 0 [pid 5402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5402] setpgid(0, 0) = 0 [pid 5402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5402] write(3, "1000", 4) = 4 [pid 5402] close(3) = 0 [pid 5402] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5402] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5402] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5403], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5403 [pid 5402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5403 attached [pid 5403] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5403] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5402] <... futex resumed>) = 0 [pid 5402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5403] <... futex resumed>) = 1 [pid 5403] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5402] <... futex resumed>) = 0 [pid 5402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5403] <... futex resumed>) = 1 [pid 5403] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5402] <... futex resumed>) = 0 [pid 5402] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5402] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5402] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5403] umount2("./file0", MNT_DETACH [pid 5402] <... clone resumed>, parent_tid=[5404], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5404 [pid 5402] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5402] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5404 attached [pid 5404] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5404] umount2("./file0", MNT_DETACH) = 0 [pid 5404] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5402] <... futex resumed>) = 0 [pid 5404] futex(0x7fc84e1753f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5403] <... umount2 resumed>) = 0 [pid 5403] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5403] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5402] exit_group(0) = ? [pid 5404] <... futex resumed>) = ? [pid 5403] <... futex resumed>) = ? [pid 5404] +++ exited with 0 +++ [pid 5403] +++ exited with 0 +++ [pid 5402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5405 attached [pid 5405] set_robust_list(0x5555564465e0, 24 [pid 323] <... clone resumed>, child_tidptr=0x5555564465d0) = 5405 [pid 5405] <... set_robust_list resumed>) = 0 [pid 5405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5405] setpgid(0, 0) = 0 [pid 5405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5405] write(3, "1000", 4) = 4 [pid 5405] close(3) = 0 [pid 5405] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5405] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5405] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5406], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5406 [pid 5405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5406 attached [pid 5406] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5406] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5405] <... futex resumed>) = 0 [pid 5405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5406] <... futex resumed>) = 1 [pid 5406] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5405] <... futex resumed>) = 0 [pid 5405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5405] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5406] <... futex resumed>) = 1 [pid 5406] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5405] <... futex resumed>) = 0 [pid 5406] umount2("./file0", MNT_DETACH [pid 5405] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5406] <... umount2 resumed>) = 0 [pid 5405] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5405] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5406] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5405] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5406] <... futex resumed>) = 0 [pid 5406] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5405] <... clone resumed>, parent_tid=[5407], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5407 [pid 5405] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5405] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5407 attached [pid 5407] set_robust_list(0x7fc84e07e9e0, 24) = 0 [pid 5407] umount2("./file0", MNT_DETACH) = 0 [pid 5407] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5405] <... futex resumed>) = 0 [pid 5405] exit_group(0) = ? [pid 5406] <... futex resumed>) = ? [pid 5407] <... futex resumed>) = ? [pid 5407] +++ exited with 0 +++ [pid 5406] +++ exited with 0 +++ [pid 5405] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5408 ./strace-static-x86_64: Process 5408 attached [pid 5408] set_robust_list(0x5555564465e0, 24) = 0 [pid 5408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5408] setpgid(0, 0) = 0 [pid 5408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5408] write(3, "1000", 4) = 4 [pid 5408] close(3) = 0 [pid 5408] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5408] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5408] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5409], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5409 [pid 5408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5409 attached [pid 5409] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5409] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5408] <... futex resumed>) = 0 [pid 5408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5409] <... futex resumed>) = 1 [pid 5409] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5408] <... futex resumed>) = 0 [pid 5408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5409] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5408] <... futex resumed>) = 0 [pid 5409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5408] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5408] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5408] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5409] umount2("./file0", MNT_DETACH./strace-static-x86_64: Process 5410 attached [pid 5408] <... clone resumed>, parent_tid=[5410], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5410 [pid 5408] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5408] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5410] set_robust_list(0x7fc84e07e9e0, 24 [pid 5409] <... umount2 resumed>) = 0 [pid 5410] <... set_robust_list resumed>) = 0 [pid 5409] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5410] umount2("./file0", MNT_DETACH [pid 5409] <... futex resumed>) = 0 [pid 5409] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5410] <... umount2 resumed>) = 0 [pid 5410] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5408] <... futex resumed>) = 0 [pid 5408] exit_group(0 [pid 5409] <... futex resumed>) = ? [pid 5408] <... exit_group resumed>) = ? [pid 5409] +++ exited with 0 +++ [pid 5410] +++ exited with 0 +++ [pid 5408] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5411 ./strace-static-x86_64: Process 5411 attached [pid 5411] set_robust_list(0x5555564465e0, 24) = 0 [pid 5411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5411] setpgid(0, 0) = 0 [pid 5411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5411] write(3, "1000", 4) = 4 [pid 5411] close(3) = 0 [pid 5411] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5411] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5411] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5412 attached , parent_tid=[5412], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5412 [pid 5412] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5412] <... futex resumed>) = 0 [pid 5411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5412] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5411] <... futex resumed>) = 0 [pid 5412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5411] <... futex resumed>) = 0 [pid 5412] mount(NULL, "./file0", "ramfs", 0, NULL [pid 5411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5412] <... mount resumed>) = 0 [pid 5412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5411] <... futex resumed>) = 0 [pid 5411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5411] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5412] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 5412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5411] <... futex resumed>) = 0 [pid 5412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5411] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5411] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e05e000 [pid 5411] mprotect(0x7fc84e05f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5411] clone(child_stack=0x7fc84e07e3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5412] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 5413 attached [pid 5412] umount2("./file0", MNT_DETACH [pid 5413] set_robust_list(0x7fc84e07e9e0, 24 [pid 5411] <... clone resumed>, parent_tid=[5413], tls=0x7fc84e07e700, child_tidptr=0x7fc84e07e9d0) = 5413 [pid 5412] <... umount2 resumed>) = 0 [pid 5411] futex(0x7fc84e1753f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5411] futex(0x7fc84e1753fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5413] <... set_robust_list resumed>) = 0 [pid 5412] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5413] umount2("./file0", MNT_DETACH [pid 5412] <... futex resumed>) = 0 [pid 5412] futex(0x7fc84e1753e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5413] <... umount2 resumed>) = 0 [pid 5413] futex(0x7fc84e1753fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5411] <... futex resumed>) = 0 [pid 5411] exit_group(0) = ? [pid 5412] <... futex resumed>) = ? [pid 5412] +++ exited with 0 +++ [pid 5413] +++ exited with 0 +++ [pid 5411] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564465d0) = 5414 ./strace-static-x86_64: Process 5414 attached [pid 5414] set_robust_list(0x5555564465e0, 24) = 0 [pid 5414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5414] setpgid(0, 0) = 0 [pid 5414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5414] write(3, "1000", 4) = 4 [pid 5414] close(3) = 0 [pid 5414] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc84e07f000 [pid 5414] mprotect(0x7fc84e080000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5414] clone(child_stack=0x7fc84e09f3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[5415], tls=0x7fc84e09f700, child_tidptr=0x7fc84e09f9d0) = 5415 [pid 5414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5415 attached [pid 5415] set_robust_list(0x7fc84e09f9e0, 24) = 0 [pid 5415] mkdir("./file0", 000) = -1 EEXIST (File exists) [pid 5415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5414] <... futex resumed>) = 0 [pid 5414] futex(0x7fc84e1753e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5414] futex(0x7fc84e1753ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5415] <... futex resumed>) = 1 [pid 5415] mount(NULL, "./file0", "ramfs", 0, NULL) = 0 [pid 5415] futex(0x7fc84e1753ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5414] <... futex resumed>) = 0 [pid 5415] mount("./file0", "./file0", "incremental-fs", 0, NULL